JP2015019273A - Head-mounted display device and control method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for a head-mounted display device reducing a load on visual sensation of a user.SOLUTION: A transmission-type head-mounted display device includes: an image display unit which has an image light generation unit generating and emitting image light on the basis of image data, makes the user visually recognize the image light as a virtual image, and makes an outer scene be transmitted, in the state of being mounted on the head of the user; and a control unit for setting specific image light which is generated on the basis of the set specific image data and is changed with the lapse of time, as image light to be visually recognized by the user using the image display unit.

Description

  The present invention relates to a head-mounted display device.

  A head-mounted display device (Head Mounted Display, HMD) that is a display device mounted on the head is known. The head-mounted display device, for example, generates image light representing an image using a liquid crystal display and a light source, and guides the generated image light to a user's eye using a projection optical system or a light guide plate This causes the user to visually recognize the virtual image. There are two types of head-mounted display devices: a transmission type in which the user can visually recognize the outside scene in addition to a virtual image, and a non-transmission type in which the user cannot visually recognize the outside scene. The transmissive head-mounted display device includes an optical transmissive type and a video transmissive type.

  In Patent Document 1, each of a plurality of frames constituting a received video signal is identified by several types according to luminance and saturation, and in a predetermined number of frames, from a specific type of frame to another type of frame. If the change is more than a certain number of times, reducing the number of frames from the predetermined number of frames will reduce the change in the frame type, thereby reducing the burden on the user viewing the video. An image display device is disclosed.

JP 2010-141548 A

Research report on the effects of content on the body, March 2004, Ministry of Internal Affairs and Communications Guidelines for video techniques such as animation, 2006, Japan Broadcasting Corporation, Japan Private Broadcasting Corporation

  However, in the technique described in Patent Document 1, in order to identify each type of a plurality of frames constituting the received video signal and reduce a change from a specific type of frame to another type of frame, Although a certain effect can be obtained only for an image visually recognized by the user, for example, no consideration is given to a case where the user visually recognizes a still image having no change in the type of frame. For this reason, there is a problem of reducing the burden on the user for still images other than video. In addition, in the transmissive head-mounted display device, the transmitted outside scene is superimposed on the received image and is visually recognized by the user. Therefore, there is a problem that it is desired to control a virtual image that is visually recognized by the user in consideration of the transmitted outside scene. In addition, there is a problem that it is desired to control a virtual image that is visually recognized by the user according to information detected by being included in the transmitted outside scene. In addition, in the conventional head-mounted display device, improvement in convenience has been desired.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms.

(1) According to one aspect of the present invention, a transmissive head-mounted display device is provided. This head-mounted display device has an image light generation unit that generates and emits image light based on image data, and in a state of being mounted on the user's head, the image light is transmitted to the user as a virtual image. An image display unit that allows the user to visually recognize and transmit the outside scene; and the image light that is visually recognized by the user using the image display unit, is generated based on the set specific image data, and changes with time. And a control unit for setting the specific image light to be performed. According to this form of the head-mounted display device, the image light visually recognized by the user changes gradually with the passage of time, so that the burden on the user's vision is reduced.

(2) In the head-mounted display device of the above aspect, the specific image data is set based on specific information; the specific image light includes a plurality of types of first image light and the plurality of types of image data. Second image light different from the first image light; and the control unit causes the image light to be visually recognized by a user using the image display unit from the plurality of types of first image light. You may change to said 2nd image light with progress of time. According to the head-mounted display device of this embodiment, the user does not suddenly make the second image light visible from the state where only the outside scene is visually recognized, but with a plurality of types over time. After the first image light is visually recognized, the second image light is visually recognized. Therefore, since the change of the outside scene and image light which a user visually recognizes is moderate, the burden with respect to a user's vision can further be reduced.

(3) In the head-mounted display device of the above aspect, each of the plurality of types of first image light and the second image light may differ only in luminance. According to the head-mounted display device of this aspect, a plurality of types of first image light and second image light can be generated based on a single image data simply by controlling the luminance. Easy control can reduce the burden on the user's vision.

(4) In the head-mounted display device according to the above aspect, the image light generation unit includes a light source capable of adjusting the amount of light emitted, an image forming panel that converts light emitted from the light source into the image light, The control unit may adjust the light intensity emitted from the light source to make the brightness of each of the plurality of types of first image light different from that of the second image light. According to the head-mounted display device of this aspect, a plurality of types of first image light and second image light can be generated based on a single image data simply by controlling the luminance. Easy control can reduce the burden on the user's vision.

(5) In the head-mounted display device according to the above aspect, the luminance of the second image light is greater than the luminance of each of the plurality of types of first image light; The first image light of the plurality of types and the second image light are not visually recognized by the user, and the first image light of the plurality of types is viewed after the first In the case of changing to a state in which the second image light is viewed, the plurality of types of first image light are given to the user so that the luminance of the plurality of types of first image light increases as time passes. From the state in which the plurality of types of first image light are visually recognized after the second image light is visually recognized by the user, the plurality of types of first image light and the second image light When changing to a state that the user does not visually recognize A first image light of the plurality of types may be recognized by the user as have luminance is reduced. According to this form of the head-mounted display device, the user can visually recognize the second image light so that the second image light gradually emerges through a plurality of types of first image light. Can be further reduced.

(6) In the head-mounted display device according to the above aspect, the control unit uses the image display unit; both the plurality of types of the first image light and the second image light are used by a user. When changing from a state where the first image light is not visually recognized to a state where the second image light is visually recognized after the plurality of types of first image light is visually recognized, the first type of the plurality of types of first image light with the passage of time. The user is made to visually recognize the plurality of types of first image light so that the rate of increase in the luminance of the image light is increased; and after the user has visually recognized the second image light, the plurality of types of first image light When changing from the state in which the image light is visually recognized to the state in which neither of the plurality of types of the first image light and the second image light is visually recognized by the user, the luminance is increased as time passes. The plurality of types of first image lights are viewed by the user so that the reduction rate is increased. It may be. According to this form of the head-mounted display device, the user can visually recognize the second image light so that the second image light gradually emerges through a plurality of types of first image light. Can be further reduced.

(7) In the head-mounted display device according to the above aspect, each of the plurality of types of first image light is part of the second image light; and the control unit uses the image display unit. And the second image light after the plurality of types of first image light and the second image light are not visually recognized by the user. When changing to a state in which the image light is visually recognized, the plurality of types of first image lights are visually recognized by the user so that the sizes of the plurality of types of first image light increase with time. From the state in which the plurality of types of first image light is visually recognized after the second image light is visually recognized by the user, the plurality of types of first image light and the second image light are In any case, when changing to a state where the user does not visually recognize the above, A first image light of the plurality of types may be recognized by the user such that the magnitude image of the first image light type is reduced. According to the head-mounted display device of this aspect, the image is made to be visually recognized as time elapses rather than causing the user to visually recognize the second image light from a state where only the outside scene is visually recognized. The area of will be enlarged. Therefore, since the change of the outside scene and the image visually recognized by the user is gradual, the burden on the user's vision is reduced.

(8) The head-mounted display device according to the above aspect further includes a temperature detection unit that detects a temperature distribution of the outside scene in the direction of the user's line of sight; the specific information includes the detected temperature distribution of the outside scene. The information to identify may be included. According to the head-mounted display device of this aspect, it is possible to make the user visually recognize an image accompanying a temperature change of the outside scene, and the convenience for the user is improved.

(9) The head-mounted display device according to the above aspect further includes an imaging unit that captures an outside scene in the user's line-of-sight direction; an object extraction unit that extracts a specific object included in the captured image; The specific information may be information regarding the extracted specific object. According to the head-mounted display device of this aspect, since the image to be visually recognized by the user can be controlled based on the detection result of the specific object included in the captured image, the convenience for the user is improved.

(10) The head-mounted display device according to the above aspect further includes a position information acquisition unit that acquires position information for specifying a position of the user; the specific information includes the acquired position information. May be. According to the head-mounted display device of this aspect, since the image to be visually recognized by the user can be controlled based on the position information of the user, the convenience for the user is improved.

(11) The head-mounted display device according to the above aspect further includes a line-of-sight direction specifying unit that acquires line-of-sight direction information that is information for specifying a user's line-of-sight direction; May be included. According to this form of the head-mounted display device, when the user's line-of-sight direction is not fixed, the user is not allowed to visually recognize a plurality of types of first image light and second image light. Therefore, even if the user changes the line-of-sight direction, the transmitted outside scene only changes, and it is not necessary to view the generated image. Is further reduced.

  A plurality of constituent elements of each embodiment of the present invention described above are not essential, and some or all of the effects described in the present specification are to be solved to solve part or all of the above-described problems. In order to achieve the above, it is possible to appropriately change, delete, replace with another new component, and partially delete the limited contents of some of the plurality of components. In order to solve some or all of the above-described problems or achieve some or all of the effects described in this specification, technical features included in one embodiment of the present invention described above. A part or all of the technical features included in the other aspects of the present invention described above may be combined to form an independent form of the present invention.

  For example, one embodiment of the present invention can be realized as an apparatus including one or more or all of the two elements of the image display unit and the control unit. That is, this apparatus may or may not have an image display unit. The device may or may not have a control unit. The image display unit includes, for example, an image light generation unit that generates and emits image light based on image data, and allows the user to visually recognize the image light as a virtual image in a state of being mounted on the user's head. At the same time, the outside scene may be transmitted. The control unit, for example, sets the specific image light that is generated based on the set specific image data as the image light to be visually recognized by the user using the image display unit, and changes with time. May be. Such a device can be realized as, for example, a head-mounted display device, but can also be realized as a device other than the head-mounted display device. According to such a form, it is possible to solve at least one of various problems such as improvement and simplification of the operability of the device, integration of the device, and improvement of convenience of the user who uses the device. it can. Any or all of the technical features of each form of the head-mounted display device described above can be applied to this device.

  The present invention can also be realized in various forms other than the head-mounted display device. For example, display device, head-mounted display device and display device control method, head-mounted display system, display device, head-mounted display system, and computer program for realizing the functions of the display device, and the computer program Can be realized in the form of a data signal or the like embodied in a carrier wave including the computer program.

2 is an explanatory diagram showing an external configuration of a head-mounted display device 100. FIG. 3 is a block diagram functionally showing the configuration of the head-mounted display device 100. FIG. It is explanatory drawing which shows a mode that image light is inject | emitted by the image light production | generation part. It is explanatory drawing which shows the flow of a specific image display process. It is explanatory drawing which shows an example of selection menu screen IMG1 visually recognized by a user. It is explanatory drawing which shows an example of the specific image visually recognized by the user. It is explanatory drawing which shows an example of the intermediate image visually recognized by the user. It is explanatory drawing which shows an example of the time transition of the brightness | luminance of the backlights 221 and 222 in an image display process. It is explanatory drawing which shows the flow of a specific image non-display process. It is explanatory drawing which shows an example of the time transition of the brightness | luminance of the backlights 221 and 222 in an image non-display process. It is a block diagram which shows functionally the structure of the head mounted display apparatus 100a in 2nd Embodiment. It is explanatory drawing which shows the flow of the specific image display process in 2nd Embodiment. It is explanatory drawing which shows an example of the preview image PI visually recognized by the user. It is explanatory drawing which shows an example of the specific image visually recognized by the user. It is explanatory drawing which shows an example of the intermediate image visually recognized by the user. It is explanatory drawing which shows an example of the intermediate image visually recognized by the user. It is explanatory drawing which shows an example of intermediate image MI1c visually recognized by the user. It is explanatory drawing which shows an example of specific image SI1c, SI2c, SI5c visually recognized by the user. It is explanatory drawing which shows an example of specific image SI6, SI7, SI8 visually recognized by the user. It is explanatory drawing which shows an example of menu image IMG2 containing the specific image visually recognized by the user. It is explanatory drawing which shows an example of specific image SI9, SI10 visually recognized by the user. It is explanatory drawing which shows the external appearance structure of the head mounted display apparatus 100 in a modification.

Next, embodiments of the present invention will be described in the following order based on the embodiments.
A. First embodiment:
A-1. Configuration of head mounted display device:
A-2. Specific image display processing:
A-3. Specific image hiding process:
B. Second embodiment:
C. Variation:

A-1. Configuration of head mounted display device:
FIG. 1 is an explanatory diagram showing an external configuration of the head-mounted display device 100. The head-mounted display device 100 is a display device mounted on the head, and is also called a head mounted display (HMD). The head-mounted display device 100 of the present embodiment is an optically transmissive head-mounted display device that allows a user to visually recognize a virtual image and at the same time directly view an outside scene. In this specification, a virtual image visually recognized by the user with the head-mounted display device 100 is also referred to as a “display image” for convenience. Moreover, emitting image light generated based on image data is also referred to as “displaying an image”.

  The head-mounted display device 100 includes an image display unit 20 that allows a user to visually recognize a virtual image when mounted on the user's head, and a control unit 10 (controller 10) that controls the image display unit 20. I have.

  The image display unit 20 is a mounting body that is mounted on the user's head, and has a glasses shape in the present embodiment. The image display unit 20 includes a right holding unit 21, a right display driving unit 22, a left holding unit 23, a left display driving unit 24, a right optical image display unit 26, a left optical image display unit 28, and a thermography 62. And. The right optical image display unit 26 and the left optical image display unit 28 are arranged so as to be positioned in front of the right and left eyes of the user when the user wears the image display unit 20, respectively. One end of the right optical image display unit 26 and one end of the left optical image display unit 28 are connected to each other at a position corresponding to the eyebrow of the user when the user wears the image display unit 20.

  The right holding unit 21 extends from the end ER which is the other end of the right optical image display unit 26 to a position corresponding to the user's temporal region when the user wears the image display unit 20. It is a member. Similarly, the left holding unit 23 extends from the end EL which is the other end of the left optical image display unit 28 to a position corresponding to the user's temporal region when the user wears the image display unit 20. It is a member provided. The right holding unit 21 and the left holding unit 23 hold the image display unit 20 on the user's head like a temple of glasses.

  The right display drive unit 22 and the left display drive unit 24 are disposed on the side facing the user's head when the user wears the image display unit 20. Hereinafter, the right holding unit 21 and the left holding unit 23 are collectively referred to simply as “holding unit”, and the right display driving unit 22 and the left display driving unit 24 are collectively referred to simply as “display driving unit”. The right optical image display unit 26 and the left optical image display unit 28 are collectively referred to simply as “optical image display unit”.

  The display drive units 22 and 24 include liquid crystal displays 241 and 242 (hereinafter referred to as “LCDs 241 and 242”), projection optical systems 251 and 252 (see FIG. 3). Details of the configuration of the display driving units 22 and 24 will be described later. The optical image display units 26 and 28 as optical members include light guide plates 261 and 262 (see FIG. 2) and a light control plate. The light guide plates 261 and 262 are formed of a light transmissive resin material or the like, and guide the image light output from the display driving units 22 and 24 to the eyes of the user. The light control plate is a thin plate-like optical element, and is arranged so as to cover the front side of the image display unit 20 which is the side opposite to the user's eye side. The light control plate protects the light guide plates 261 and 262 and suppresses damage to the light guide plates 261 and 262 and adhesion of dirt. In addition, by adjusting the light transmittance of the light control plate, it is possible to adjust the amount of external light entering the user's eyes and adjust the ease of visual recognition of the virtual image. The light control plate can be omitted.

  The thermography 62 is arranged at a position corresponding to the user's eyebrow when the user wears the image display unit 20. The thermography 62 is an infrared thermography that detects infrared rays radiated from an object and varies depending on temperature, converts the detected amount of infrared energy into temperature, and generates a temperature distribution image (infrared thermal image) representing the temperature distribution. The angle of view of the thermography 62 is set so that the area of the image to be captured is the same as the line of sight of the user wearing the image display unit 20. The thermography 62 corresponds to a temperature detection unit in the claims.

  The image display unit 20 further includes a connection unit 40 for connecting the image display unit 20 to the control unit 10. The connection unit 40 includes a main body cord 48, a right cord 42, a left cord 44, and a connecting member 46 that are connected to the control unit 10. The right cord 42 and the left cord 44 are codes in which the main body cord 48 is branched into two. The right cord 42 is inserted into the casing of the right holding unit 21 from the distal end AP in the extending direction of the right holding unit 21 and connected to the right display driving unit 22. Similarly, the left cord 44 is inserted into the housing of the left holding unit 23 from the distal end AP in the extending direction of the left holding unit 23 and connected to the left display driving unit 24. The connecting member 46 is provided at a branch point between the main body cord 48, the right cord 42 and the left cord 44, and has a jack for connecting the earphone plug 30. A right earphone 32 and a left earphone 34 extend from the earphone plug 30.

  The image display unit 20 and the control unit 10 transmit various signals via the connection unit 40. A connector (not shown) that fits each other is provided at each of the end of the main body cord 48 opposite to the connecting member 46 and the control unit 10. By fitting / releasing the connector of the main body cord 48 and the connector of the control unit 10, the control unit 10 and the image display unit 20 are connected or disconnected. For the right cord 42, the left cord 44, and the main body cord 48, for example, a metal cable or an optical fiber can be adopted.

  The control unit 10 is a device for controlling the head-mounted display device 100. The control unit 10 includes a determination key 11, a lighting unit 12, a display switching key 13, a track pad 14, a luminance switching key 15, a direction key 16, a menu key 17, and a power switch 18. Yes. The determination key 11 detects a pressing operation and outputs a signal for determining the content operated by the control unit 10. The lighting unit 12 notifies the operation state of the head-mounted display device 100 by its light emission state. Examples of the operating state of the head-mounted display device 100 include power ON / OFF. For example, an LED (Light Emitting Diode) is used as the lighting unit 12. The display switching key 13 detects a pressing operation and outputs a signal for switching the display mode of the content video between 3D and 2D, for example. The track pad 14 detects the operation of the user's finger on the operation surface of the track pad 14 and outputs a signal corresponding to the detected content. As the track pad 14, various track pads such as an electrostatic type, a pressure detection type, and an optical type can be adopted. The luminance switching key 15 detects a pressing operation and outputs a signal for increasing or decreasing the luminance of the image display unit 20. The direction key 16 detects a pressing operation on a key corresponding to the up / down / left / right direction, and outputs a signal corresponding to the detected content. The power switch 18 switches the power-on state of the head-mounted display device 100 by detecting a slide operation of the switch.

  FIG. 2 is a block diagram functionally showing the configuration of the head-mounted display device 100. As shown in FIG. 2, the control unit 10 includes an input information acquisition unit 110, a storage unit 120, a power supply 130, an operation unit 135, a CPU 140, an interface 180, a transmission unit 51 (Tx51), and a transmission unit 52. (Tx52). The operation unit 135 receives an operation by the user and includes an enter key 11, a display switch key 13, a track pad 14, a luminance switch key 15, a direction key 16, a menu key 17, and a power switch 18.

  The input information acquisition unit 110 acquires a signal corresponding to an operation input by the user. As a signal corresponding to the operation input, for example, there is an operation input to the track pad 14, the direction key 16, and the power switch 18 arranged in the operation unit 135. The power supply 130 supplies power to each part of the head-mounted display device 100. As the power supply 130, for example, a secondary battery can be used. The storage unit 120 stores various computer programs. The storage unit 120 is configured by a ROM, a RAM, or the like. The CPU 140 reads and executes the computer program stored in the storage unit 120, thereby operating the operating system 150 (OS 150), the display control unit 190, the sound processing unit 170, the image processing unit 160, the line-of-sight direction determination unit 166, and The specific image control unit 165 functions.

  The display control unit 190 generates control signals for controlling the right display drive unit 22 and the left display drive unit 24. Specifically, the display control unit 190 controls driving of the right LCD 241 by the right LCD control unit 211, driving ON / OFF of the right backlight 221 by the right backlight control unit 201, and left LCD control unit according to control signals. The left LCD 242 driving ON / OFF by 212, the left backlight 222 driving ON / OFF by the left backlight control unit 202, and the like are individually controlled. Thus, the display control unit 190 controls the generation and emission of image light by the right display driving unit 22 and the left display driving unit 24, respectively. For example, the display control unit 190 may cause both the right display driving unit 22 and the left display driving unit 24 to generate image light, generate only one image light, or neither may generate image light.

  The display control unit 190 transmits control signals for the right LCD control unit 211 and the left LCD control unit 212 via the transmission units 51 and 52, respectively. In addition, the display control unit 190 transmits control signals to the right backlight control unit 201 and the left backlight control unit 202, respectively.

  The image processing unit 160 acquires an image signal included in the content. The image processing unit 160 separates synchronization signals such as a vertical synchronization signal VSync and a horizontal synchronization signal HSync from the acquired image signal. Further, the image processing unit 160 generates a clock signal PCLK using a PLL (Phase Locked Loop) circuit or the like (not shown) according to the period of the separated vertical synchronization signal VSync and horizontal synchronization signal HSync. The image processing unit 160 converts the analog image signal from which the synchronization signal is separated into a digital image signal using an A / D conversion circuit or the like (not shown). Thereafter, the image processing unit 160 stores the converted digital image signal as image data (RGB data) of the target image in the DRAM in the storage unit 120 for each frame. Note that the image processing unit 160 may execute image processing such as various tone correction processing such as resolution conversion processing, brightness and saturation adjustment, and keystone correction processing on the image data as necessary. .

  The image processing unit 160 transmits the generated clock signal PCLK, vertical synchronization signal VSync, horizontal synchronization signal HSync, and image data stored in the DRAM in the storage unit 120 via the transmission units 51 and 52, respectively. . Note that the image data transmitted via the transmission unit 51 is also referred to as “right eye image data”, and the image data transmitted via the transmission unit 52 is also referred to as “left eye image data”. The transmission units 51 and 52 function as a transceiver for serial transmission between the control unit 10 and the image display unit 20.

  The audio processing unit 170 acquires an audio signal included in the content, amplifies the acquired audio signal, and a speaker (not shown) in the right earphone 32 and a speaker (not shown) connected to the connecting member 46 ( (Not shown). For example, when the Dolby (registered trademark) system is adopted, processing on the audio signal is performed, and different sounds with different frequencies or the like are output from the right earphone 32 and the left earphone 34, for example.

  The line-of-sight direction determination unit 166 estimates the line-of-sight direction of the user based on the orientation and movement of the image display unit 20 detected by the 9-axis sensor 66 described later.

  The specific image control unit 165 is a high heat detection application (hereinafter, also simply referred to as “heat detection application”) that displays a portion having a temperature equal to or higher than a threshold value as a specific image. The specific image control unit 165 identifies a region having a temperature equal to or higher than a threshold based on the temperature distribution image acquired by the thermography 62. The specific image control unit 165 creates specific image data indicating a red image having the same size as the identified region so that the user can visually recognize that the temperature is equal to or higher than the threshold value. Further, the specific image control unit 165 can create image data in which the color or region of the specific image is changed based on the specific image data. The specific image control unit 165 transmits the generated specific image data as a control signal to the image processing unit 160 and the display control unit 190. The specific image control unit 165 corresponds to the control unit in the claims.

  The interface 180 is an interface for connecting various external devices OA that are content supply sources to the control unit 10. Examples of the external device OA include a personal computer (PC), a mobile phone terminal, and a game terminal. As the interface 180, for example, a USB interface, a micro USB interface, a memory card interface, or the like can be used.

  The image display unit 20 includes a right display drive unit 22, a left display drive unit 24, a right light guide plate 261 as a right optical image display unit 26, a left light guide plate 262 as a left optical image display unit 28, and nine axes. A sensor 66 and a thermography 62 are provided.

  The 9-axis sensor 66 is a motion sensor that detects acceleration (3 axes), angular velocity (3 axes), and geomagnetism (3 axes). Since the 9-axis sensor 66 is provided in the image display unit 20, when the image display unit 20 is mounted on the user's head, the movement of the user's head is detected. The orientation of the image display unit 20 is specified from the detected movement of the user's head, and the line-of-sight direction determination unit 166 specifies the line-of-sight direction of the user. When the detected acceleration and angular velocity are equal to or less than the threshold value, the line-of-sight direction determination unit 166 determines that the user's line-of-sight direction is fixed, that is, the user's line-of-sight direction is fixed. The 9-axis sensor 66 and the line-of-sight direction determining unit 166 correspond to the line-of-sight direction specifying unit in the claims.

  The right display driving unit 22 includes a receiving unit 53 (Rx53), a right backlight control unit 201 (right BL control unit 201) and a right backlight 221 (right BL221) that function as a light source, and a right LCD that functions as a display element. A control unit 211, a right LCD 241 and a right projection optical system 251 are included. The right backlight control unit 201 and the right backlight 221 function as a light source. The right LCD control unit 211 and the right LCD 241 function as display elements. The right backlight control unit 201, the right LCD control unit 211, the right backlight 221 and the right LCD 241 are collectively referred to as “image light generation unit”.

  The receiving unit 53 functions as a receiver for serial transmission between the control unit 10 and the image display unit 20. The right backlight control unit 201 drives the right backlight 221 based on the input control signal. The right backlight 221 is a light emitter such as an LED or electroluminescence (EL). The right LCD control unit 211 drives the right LCD 241 based on the clock signal PCLK, the vertical synchronization signal VSync, the horizontal synchronization signal HSync, and the right-eye image data input via the reception unit 53. The right LCD 241 is a transmissive liquid crystal panel in which a plurality of pixels are arranged in a matrix.

  The right projection optical system 251 is configured by a collimator lens that converts the image light emitted from the right LCD 241 to light beams in a parallel state. The right light guide plate 261 as the right optical image display unit 26 guides the image light output from the right projection optical system 251 to the right eye RE of the user while reflecting the image light along a predetermined optical path. The right projection optical system 251 and the right light guide plate 261 are collectively referred to as “light guide unit”.

  The left display drive unit 24 has the same configuration as the right display drive unit 22. The left display driving unit 24 includes a receiving unit 54 (Rx54), a left backlight control unit 202 (left BL control unit 202) and a left backlight 222 (left BL222) that function as a light source, and a left LCD that functions as a display element. A control unit 212 and a left LCD 242 and a left projection optical system 252 are included. The left backlight control unit 202 and the left backlight 222 function as a light source. The left LCD control unit 212 and the left LCD 242 function as display elements. The left backlight control unit 202, the left LCD control unit 212, the left backlight 222, and the left LCD 242 are also collectively referred to as “image light generation unit”. The left projection optical system 252 is configured by a collimating lens that converts the image light emitted from the left LCD 242 into a light beam in a parallel state. The left light guide plate 262 as the left optical image display unit 28 guides the image light output from the left projection optical system 252 to the left eye LE of the user while reflecting the image light along a predetermined optical path. The left projection optical system 252 and the left light guide plate 262 are collectively referred to as “light guide unit”. The backlight control units 201 and 202 and the backlights 221 and 222 correspond to the light sources in the claims, and the LCD control units 211 and 212 and the LCDs 241 and 242 correspond to the image forming panels in the claims.

  FIG. 3 is an explanatory diagram illustrating a state in which image light is emitted by the image light generation unit. The right LCD 241 changes the transmittance of the light transmitted through the right LCD 241 by driving the liquid crystal at each pixel position arranged in a matrix, thereby changing the illumination light IL emitted from the right backlight 221 into an image. Is modulated into an effective image light PL representing The same applies to the left side. As shown in FIG. 3, the backlight system is adopted in the present embodiment, but the image light may be emitted using a front light system or a reflection system.

A-2. Specific image display processing:
FIG. 4 is an explanatory diagram showing the flow of the specific image display process. In the specific image display process, after a specific detection condition is selected, specific image data is created according to the selected detection condition, and the specific image is displayed on the image display unit 20.

  In the specific image display process, first, when the operation unit 135 receives a predetermined operation, the specific image control unit 165 displays an application selection menu screen on the image display unit 20 (step S11). FIG. 5 is an explanatory diagram showing an example of the selection menu screen IMG1 visually recognized by the user. FIG. 5 shows a visual field VR visually recognized by the user. The image display maximum area PN indicates an outer frame of the maximum area where image light is formed. In FIG. 5, the broken line in the outer frame of the image display maximum area PN is shown for convenience and is not visually recognized by the user. As shown in FIG. 5, a selection menu screen IMG1 and a cursor CS are shown in the image display maximum area PN. The selection menu screen IMG1 displayed in the image display maximum area PN includes selection buttons for a plurality of selectable applications. When the operation unit 135 is operated by the user, the cursor CS moves in the maximum image display area PN, and when the determination key 11 is pressed while the cursor CS is overlapped with any button, the button is selected. Is done.

  After the selection menu screen IMG1 is displayed (step S11 in FIG. 4), when a specific application is selected by the user (step S12: application selection), the specific image control unit 165 displays the selected application (hereinafter referred to as “application”). A screen corresponding to “simply selected application”) is displayed on the image display unit 20. When the selected application is a detection application, the specific image control unit 165 causes the image display unit 20 to display a detection condition input screen (step S13). When the past history included in the selection menu screen IMG1 is selected in the process of step S12 (step S12: history selection), the specific image control unit 165 detects the past selected apps and the respective selected apps. The conditions are displayed on the image display unit 20 (step S14). In the present embodiment, a case where a heat detection application is selected will be described. In the heat detection application, a setting screen for a lower limit temperature to be detected is displayed on the image display unit 20 as an input screen for detection conditions.

  After the process of step S13 and the process of step S14, the operation unit 135 is operated by the user to set a lower limit temperature which is a detection condition (step S15). When the lower limit temperature is set, the specific image control unit 165 activates the thermography 62 and the 9-axis sensor 66, which are devices related to the heat detection application (step S16).

  Next, the specific image control unit 165 detects a region having a temperature equal to or higher than the threshold corresponding to the detection condition in the temperature distribution image captured by the thermography 62 (step S17). When the temperature region above the threshold is not detected (step S17: NO), the specific image control unit 165 continuously monitors the region above the threshold. When a region having a temperature equal to or higher than the threshold is detected (step S17: YES), the line-of-sight direction determination unit 166 determines whether the user's line-of-sight direction is fixed (step S18).

  If it is determined in step S18 that the user's line-of-sight direction is not fixed (step S18: NO), the detection of a region having a temperature equal to or higher than the threshold is continuously monitored (step S17). It waits for a person's gaze direction to be in the state fixed (step S18). In the process of step S18, when it is determined that the user's line-of-sight direction is fixed (step S18: YES), the specific image control unit 165 selects a region having a temperature equal to or higher than the threshold as the position for displaying the specific image. Specify (step S19). Note that in a state in which a region having a temperature equal to or higher than the threshold is detected, the user's line-of-sight direction may not be fixed. Therefore, a region having a temperature equal to or higher than the threshold is detected and the user's line-of-sight direction is fixed. If this is the case, a region having a temperature equal to or higher than the threshold is specified.

  When a region having a temperature equal to or higher than the threshold is specified (step S19), the specific image control unit 165 sets specific image data corresponding to the specified region (step S20). FIG. 6 is an explanatory diagram illustrating an example of a specific image visually recognized by the user. FIG. 6 shows a visual field VR visually recognized by the user. FIG. 6 shows a specific image SI1 and a specific image SI2 (hereinafter also referred to as “specific images SI1, SI2”) displayed in the image display maximum area PN and generated based on the specific image data. Yes. The specific image SI <b> 1 is an image showing a region having a temperature equal to or higher than a threshold detected by the thermography 62. The specific image SI2 is a message image that prompts the user that the region indicated by the specific image SI1 has a temperature equal to or higher than a threshold value and is dangerous at a high temperature.

  When the specific image data is set (step S20 in FIG. 4), the specific image control unit 165 generates a specific image and a plurality of intermediate images based on the set specific image data and displays them on the image display unit 20 ( Step S21). FIG. 7 is an explanatory diagram illustrating an example of an intermediate image visually recognized by the user. FIG. 7 shows an intermediate image MI1 and an intermediate image MI2 (hereinafter also referred to as “intermediate images MI1 and MI2”) displayed in the image display maximum area PN. The intermediate image MI1 is an image showing a region having a temperature equal to or higher than the threshold detected by the thermography 62, that is, the same region as the specific image SI1. The intermediate image MI2 is an image showing the same area as the specific image SI2. In FIGS. 6 and 7, the color density of the image corresponding to the luminance is indicated by the hatching density.

  The intermediate image is an image generated with the luminance less than 100% based on the specific image data when the luminance of the specific images SI1 and SI2 is 100%. That is, the plurality of intermediate images and the specific images SI1 and SI2 are images that differ only in luminance generated based on the same specific image data. Therefore, a plurality of intermediate images are generated depending on the number of luminances. For example, when the luminance is set to 10, 35, 65, 100%, three intermediate images and one specific image are generated based on the specific image data.

  FIG. 8 is an explanatory diagram illustrating an example of temporal transition of the luminance of the backlights 221 and 222 in the image display process. In FIG. 8, when the horizontal axis is a time axis, the luminance in a period TE (for example, 3 seconds) from when no image is displayed on the image display unit 20 until the specific images SI1 and SI2 are displayed is displayed. Changes are shown. By changing the brightness based on the same specific image data, the specific images SI1 and SI2 are displayed after a plurality of intermediate images are displayed on the image display unit 20.

  As shown in FIG. 8, when displaying the intermediate images MI1 and MI2, the specific image control unit 165 increases the luminance of the backlights 221 and 222 so that the increase rate of the luminance increases with time. Therefore, when a temperature equal to or higher than the threshold is detected, the specific image control unit 165 does not cause the user to visually recognize the specific images SI1 and SI2 at the detected moment, but allows a plurality of intermediate images with different luminances to be visually recognized. After that, the specific images SI1 and SI2 are visually recognized so that the specific images SI1 and SI2 gradually emerge (hereinafter also referred to as “fade-in display”). Each of the plurality of intermediate images and the specific images SI1 and SI2 corresponds to a plurality of types of first image light and second image light in the claims.

  When the plurality of intermediate images and the specific images SI1 and SI2 are displayed on the image display unit 20 (step S21 in FIG. 4), the specific image control unit 165 ends the specific image display process.

A-3. Specific image hiding process:
FIG. 9 is an explanatory diagram showing the flow of the specific image non-display process. In the specific image non-display processing, when the specific image no longer meets the detection condition from the state where the specific image is detected and displayed on the image display unit 20 according to the set detection condition, or the user's line-of-sight direction is changed. When changed, the specific image is changed to a non-display state.

  In the specific image non-display process, first, the specific image control unit 165 determines whether or not the temperature of the area detected as the temperature equal to or higher than the threshold continues to be equal to or higher than the threshold (step S31). If it is determined that the temperature is equal to or higher than the threshold value (step S31: YES), the line-of-sight direction determination unit 166 then detects a change in the line-of-sight direction of the user (step S32). If it is determined that a change in the user's line-of-sight direction has not been detected, that is, the user's line-of-sight direction remains fixed (step S32: NO), the specific image control unit 165 continues to use the threshold value. While monitoring the temperature of the region detected as the above temperature (step S31), the line-of-sight direction determination unit 166 monitors the line-of-sight direction of the user (step S32).

  In the process of step S31, when it is determined that the temperature of the region detected as the temperature equal to or higher than the threshold is lower than the threshold (step S31: NO), and in the process of step S32, the change in the user's line-of-sight direction Is detected (step S32: YES), the specific image control unit 165 converts the specific images SI1 and SI2 displayed on the image display unit 20 into a plurality of intermediate images having different luminances over time. After changing to, the intermediate image is not displayed by setting the luminance to 0% (step S33).

  FIG. 10 is an explanatory diagram showing an example of the time transition of the luminance of the backlights 221 and 222 in the image non-display process. In FIG. 10, when the horizontal axis is the time axis, a period TE from when the specific images SI1 and SI2 are displayed on the image display unit 20 to when no image is displayed on the image display unit 20 is displayed. The change in brightness at is shown. As illustrated in FIG. 10, the specific image control unit 165 changes the luminance as time elapses when the image displayed on the image display unit 20 is changed from the specific images SI1 and SI2 to a plurality of intermediate images having different luminances. The luminance is decreased so that the decrease rate of the image becomes larger. Therefore, when the temperature equal to or higher than the threshold is not detected, and when the user's line-of-sight direction changes, the specific images SI1 and SI2 are not instantaneously seen by the user, but the specific image SI1, SI2 changes to a plurality of intermediate images having different luminances and is visually recognized by the user so as to disappear gradually (hereinafter also simply referred to as “fade-out display”).

  When the specific images SI1 and SI2 and the plurality of intermediate images are displayed on the image display unit 20 (step S33 in FIG. 9), the specific image control unit 165 ends the specific image non-display process.

  As described above, in the head-mounted display device 100 according to the present embodiment, the operation unit 135 is generated based on the specific image data, and the specific images SI1 and SI2 which are good intermediate images that change with time. MI1 and MI2 are displayed on the image display unit 20. Therefore, in the head-mounted display device 100 according to the present embodiment, the image visually recognized by the user changes gradually with the passage of time, so that the burden on the user's vision is reduced.

  Further, in the head-mounted display device 100 according to the present embodiment, the specific image control unit 165 displays a plurality of intermediate images having different luminances on the image display unit 20 after detecting a temperature equal to or higher than a threshold value. The specific images SI1 and SI2 are displayed on the image display unit 20. The plurality of intermediate images are generated based on specific image data created based on the temperature distribution image acquired by the thermography 62. Further, the specific images SI1 and SI2 are generated based on the specific image data, and are images different from the plurality of intermediate images. Therefore, in the head-mounted display device 100 according to the present embodiment, the user does not suddenly visually recognize the specific images SI1 and SI2 from the state where only the outside scene is visually recognized, but the intermediate as the time elapses. After the image is visually recognized, the specific images SI1 and SI2 are visually recognized. Therefore, since the change of the outside scene and the image visually recognized by the user is gradual, the burden on the user's vision can be further reduced.

  In the head-mounted display device 100 according to the present embodiment, the plurality of intermediate images and the specific images SI1 and SI2 are images that differ only in luminance generated based on the same specific image data. The specific image control unit 165 adjusts the light amounts of the backlights 221 and 222 to adjust the brightness of the plurality of intermediate images and the specific images SI1 and SI2 to be different. Therefore, since the head-mounted display device 100 according to the present embodiment can generate a plurality of intermediate images and specific images SI1 and SI2 only by controlling the luminance based on one image data, simple control is possible. The burden on the user's vision can be reduced.

  In the head-mounted display device 100 according to the present embodiment, the specific image control unit 165 displays a plurality of intermediate images having different luminances during the preset period TE (for example, 3 seconds). And at the end of the period TE, the image display unit 20 displays the specific images SI1 and SI2 having a luminance higher than that of each of the plurality of intermediate images. When displaying the intermediate images MI1 and MI2, the specific image control unit 165 increases the luminance of the backlights 221 and 222 so that the increase rate of the luminance increases with time. Further, the specific image control unit 165 changes the specific images SI1 and SI2 displayed on the image display unit 20 to a plurality of intermediate images having different luminances during the period TE, and displays the image display unit at the end of the period TE. 20 in which no image is displayed. When the specific image control unit 165 changes the image displayed on the image display unit 20 from the specific images SI1 and SI2 to a plurality of intermediate images having different luminances, the decrease rate of the luminance increases with the passage of time. Reduce the brightness. Therefore, in the head-mounted display device 100 according to the present embodiment, the user can visually recognize the specific images SI1 and SI2 gradually rising through a plurality of intermediate images, and the burden on the user's vision is reduced. Can be further reduced.

  Further, in the head-mounted display device 100 according to the present embodiment, the thermography 62 generates a temperature distribution image representing the temperature distribution, and the specific image control unit 165 generates specific image data from the generated temperature distribution image. Therefore, in the head-mounted display device 100 according to the present embodiment, the user can visually recognize an image accompanying a change in the temperature of the outside scene, and the convenience for the user is improved.

  In the head-mounted display device 100 according to the present embodiment, the 9-axis sensor 66 detects the movement of the user's head, and the line-of-sight direction of the user is detected by the movement of the head detected by the line-of-sight direction determination unit 166. Is identified. The specific image control unit 165 creates specific image data when the user's line-of-sight direction is fixed. Therefore, in the head-mounted display device 100 of the present embodiment, the intermediate image and the specific images SI1 and SI2 are not visually recognized by the user when the user's line-of-sight direction is not fixed. Therefore, even if the user changes the line-of-sight direction, the transmitted outside scene only changes, and it is not necessary to visually recognize the generated image. Further reduced.

B. Second embodiment:
FIG. 11 is a block diagram functionally showing the configuration of the head-mounted display device 100a in the second embodiment. In the head-mounted display device 100a, the camera 61 is formed in the image display unit 20a instead of the thermography 62, and the GPS module 134, the wireless communication unit 132, and the image determination unit 168 are formed in the control unit 10a. Unlike the head-mounted display device 100 of the first embodiment, the other configurations are the same.

  Similarly to the thermography 62, the camera 61 is disposed at a position corresponding to the user's eyebrow when the user wears the image display unit 20a. The camera 61 captures an outside scene, which is an external scenery in the direction of the user's line of sight, and acquires an outside scene image. The camera 61 is a monocular camera, but may be a stereo camera. The camera 61 corresponds to an imaging unit in the claims.

  The GPS module 134 receives the signal from the GPS satellite, specifies the current position of the image display unit 20a, and generates information indicating the position. By detecting the current position of the image display unit 20a, the current position of the user of the head-mounted display device 100a is specified. The GPS module 134 corresponds to a position information acquisition unit in the claims.

  The wireless communication unit 132 transmits / receives various information such as weather information and road traffic information to / from other devices in accordance with a predetermined wireless communication standard such as a wireless LAN or Bluetooth. The image determination unit 168 determines whether or not the outside scene image includes the same image (for example, “sky” image) as the specific target image represented by the image data stored in advance in the storage unit 120 by pattern matching. To do. The image determination unit 168 corresponds to the object extraction unit in the claims.

  The specific image control unit 165 according to the second embodiment performs not only temperature detection, but also performs various controls based on detection of a specific target image included in the outside scene image, the current position of the user, and the like, and A plurality of intermediate images are displayed on the image display unit 20a. For example, the specific image control unit 165 specifies the sky area included in the outside scene image, and indicates the weather information received via the wireless communication unit 132 when the user's line-of-sight direction is fixed. Generate image data.

  FIG. 12 is an explanatory diagram showing the flow of specific image display processing in the second embodiment. In the specific image display process of the second embodiment, the selected detection application, the generated specific image, and the plurality of intermediate images are different from those of the first embodiment. Therefore, in the second embodiment, compared with the first embodiment, a process for generating and displaying a preview image in step S61 is newly added, and the other points are the same as those in the first embodiment. In the second embodiment, a case where an application of “weather information (FIG. 5)” (hereinafter also referred to as “weather application”), which is a detection application, is selected will be described. The notice image corresponds to a plurality of types of first image light in the claims.

  When the weather application detection condition is set in the specific image display process (step S45 in FIG. 12), the specific image control unit 165 includes a camera 61, a nine-axis sensor 66, and a wireless communication unit, which are devices related to the weather application. 132 and the GPS module 134 are activated (step S46).

  Next, the image determination unit 168 determines whether or not “sky” as the target image is included in a predetermined area or more (for example, half or more of the outside scene image) as the detection condition (step S47). When it is determined that the target image is not included in the outside scene image (step S47: NO), the image determination unit 168 continues to monitor the detection of the target image (step S47). When it is determined that the target image is included in the outside scene image (step S47: YES), the specific image control unit 165 uses the specific image as the entire region in which the target image is detected based on the specific image data. One preview image data is created as a candidate area to be displayed, and a plurality of preview images based on one preview image data is displayed on the image display unit 20a (step S61).

  FIG. 13 is an explanatory diagram showing an example of a preview image PI visually recognized by the user. As shown in FIG. 16, the preview image PI is displayed in the image display maximum area PN. The preview image PI is an image generated so as to correspond to the entire area of the captured outside scene image determined by the image determination unit 168 as “sky” of the target image. The plurality of preview images are generated by increasing the luminance of the backlights 221 and 222 with the passage of time based on the same preview image data.

  After the preview image is displayed on the image display unit 20a (step S61 in FIG. 12), the line-of-sight direction determination unit 166 determines whether the user's line-of-sight direction is fixed (step S48). When it is determined that the user's line-of-sight direction is not fixed (step S48: NO), the line-of-sight direction determination unit 166 continues to wait until the user's line-of-sight direction is fixed (step S48: NO). Step S48). If it is determined in step S48 that the user's line-of-sight direction is fixed (step S48: YES), the specific image control unit 165 displays the specific image from the area in which the preview image is displayed. The position to perform is specified (step S49).

  FIG. 14 is an explanatory diagram illustrating an example of a specific image visually recognized by the user. FIG. 14 shows the specific image SI3 and the specific image SI4 displayed in the image display maximum area PN. The specific images SI3 and SI4 are images generated based on the specific image data created by the specific image control unit 165 based on the information received from the wireless communication unit 132. The specific image control unit 165 displays the specific image SI3 on the upper left and the specific image SI4 on the upper right in the area where the preview image is displayed.

  As described above, in the head-mounted display device 100a of the second embodiment, the camera 61 captures an external scene that is an external scene in the user's line-of-sight direction, acquires an external scene image, and the image determination unit 168 It is determined by pattern matching whether or not the same image as the specific target image is included in the outside scene image. In addition, the GPS module 134 specifies the current position of the user of the head-mounted display device 100a by receiving a signal from a GPS satellite. Therefore, in the head-mounted display device 100a of the second embodiment, the user can control the image to be visually recognized based on the detection of a specific target image included in the outside scene image and the position information of the user. Improved convenience.

C. Variation:
In addition, this invention is not limited to the said embodiment, It can implement in a various aspect in the range which does not deviate from the summary, For example, the following deformation | transformation is also possible.

C1. Modification 1:
In the above-described embodiment, fade-in display and fade-out display have been described using examples of the heat detection application and the weather application as examples of the selection application. However, the detection application, the specific image, and the intermediate image can be variously modified. .

  15 and 16 are explanatory diagrams illustrating an example of an intermediate image visually recognized by the user. 15 and 16 show a modification of the intermediate images MI1 and MI2 (FIG. 7) of the first embodiment. 15 and 16 show intermediate images MI1a, MI2a, MI1b, and MI1b included in the areas of the specific images SI1 and SI2 that are finally displayed on the image display unit 20 by the fade-in display. In this modified example, the fade-in display does not gradually change the luminance as in the first embodiment, but after displaying a plurality of intermediate images generated based on different image data, the specific image SI1, SI3 is displayed. The specific image control unit 165 creates a plurality of intermediate image data indicating a part of the specific image data, generates the intermediate image MI1a (FIG. 15), the intermediate image MI1b (FIG. 16) generated based on the intermediate image data, and the specific image data. The user is made to visually recognize in the order of the image SI1 (FIG. 6). For this reason, in this modification, the specific image SI1, SI2 is not suddenly seen from the state where only the outside scene is visually recognized, but the area of the image to be visually recognized is increased as time passes. Go. Therefore, since the change of the outside scene and the image visually recognized by the user is gradual, the burden on the user's vision is reduced. Note that the fade-in display may be performed by a combination of a change in luminance and a change in display area.

  FIG. 17 is an explanatory diagram illustrating an example of the intermediate image MI1c visually recognized by the user. FIG. 18 is an explanatory diagram illustrating an example of specific images SI1c, SI2c, and SI5c visually recognized by the user. In this modification, as in the first embodiment, the fade-in display is performed by gradually increasing the luminance, and at the same time, the image display area is reduced from the intermediate image MI1c to the specific image SI1c. In this way, the intermediate image may be an area larger than the specific image.

C2. Modification 2:
FIG. 19 is an explanatory diagram illustrating an example of the specific images SI6, SI7, and SI8 visually recognized by the user. FIG. 19 shows a visual field VR visually recognized by the user when “route guidance” is selected as the detection application. In this modification, when the GPS module 134 specifies the current position of the user and the specified position is an intersection, the specific image control unit 165 displays the specific images SI6, SI7, and SI8 for route guidance as images. Displayed on the unit 20.

  FIG. 20 is an explanatory diagram illustrating an example of a menu image IMG2 including a specific image visually recognized by the user. FIG. 20 shows a visual field VR visually recognized by the user when “standby menu display” is selected as the detection application. In this modification, when the GPS module 134 specifies the current position of the user and the user has not moved from the specified current position for a certain period of time, the specific image control unit 165 displays a menu such as “music activation”. The screen is displayed on the image display unit 20.

  FIG. 21 is an explanatory diagram illustrating an example of the specific images SI9 and SI10 visually recognized by the user. FIG. 21 shows a visual field VR visually recognized by the user when “standby image display” is selected as the detection application. In this modification, the image determination unit 168 recognizes “sky” as a specific target image from the outside scene image, and at the same time, the GPS module 134 specifies the current position of the user. The specific image control unit 165 causes the image display unit 20 to display the specific images SI9 and SI10 when the user has not moved from the specified current position for a certain period of time.

C3. Modification 3:
In the first embodiment, in the fade-in display and the fade-out display, the period TE for changing the luminance when displaying the intermediate images MI1 and MI2 is the same, but it may be different. For example, in the case of fade-in display, the period TE may be longer than in the case of fade-out display. Further, in the first embodiment, when the intermediate images MI1 and MI2 are displayed, the luminance increase rate is controlled to increase with time. However, the luminance increase rate is not limited to this and is various. It can be deformed. For example, the rate of increase in luminance may be constant over time or may change stepwise over time.

  In the above embodiment, as shown in FIGS. 8 and 10, the specific image control unit 165 increases or decreases the luminance between 0% and 100%. The present invention is not limited to this, and various modifications are possible. For example, the specific image control unit 165 may increase or decrease the luminance between 20% and 90%.

  In the first embodiment, fade-in display and fade-out display are performed. However, the method of displaying the intermediate images MI1, MI2 and the specific images SI1, SI2 is not limited to this, and various modifications can be made. For example, in the image display maximum region PN, the intermediate image region may gradually increase and change to the specific image region while blinking certain two luminances. Further, fade-in display and fade-out display may be performed by increasing / decreasing luminance while blinking.

  In the above embodiment, one specific image is finally displayed based on the detection condition. However, the specific image can be variously modified. For example, a plurality of specific images may be identified and displayed based on the detection condition. In the first embodiment, not only the determination as to whether or not the detected temperature is equal to or higher than the threshold value, but also a mode in which the temperature of a plurality of threshold values is set and the color of the specific image varies depending on which temperature is higher than the threshold value It may be. When the temperature is high, the image may be displayed as a specific image having a larger R component among the RGB components, or the outer frame of the specific image to be displayed is not a circle but a jagged shape. Attention can be given to hot areas.

  In the above-described embodiment, the detection application selection menu screen IMG1 (FIG. 5) has been described as an example. However, the detection application selection menu screen IMG1 is not limited thereto, and various modifications can be made. For example, an end button for ending the application may be included in the selection menu screen IMG1, or a selection button for content reproduction or the like different from the detection application may be included.

C4. Modification 4:
In the above embodiment, the operation unit 135 is formed in the control unit 10, but the mode of the operation unit 135 can be variously modified. For example, a mode in which a user interface that is the operation unit 135 is provided separately from the control unit 10 may be used. In this case, the operation unit 135 is separate from the control unit 10 in which the power supply 130 and the like are formed. Therefore, the operation unit 135 can be reduced in size and user operability is improved. Further, a nine-axis sensor that detects the movement of the operation unit 135 is formed in the operation unit 135, and various operations are performed based on the detected movement, so that the user can sensuously feel the head-mounted display device 100. Can be operated.

  For example, the image light generation unit may include an organic EL (Organic Electro-Luminescence) display and an organic EL control unit. Further, for example, the image light generation unit may use LCOS (Liquid crystal on silicon, LCoS is a registered trademark), a digital micromirror device, or the like instead of the LCD. Further, for example, the present invention can be applied to a laser retinal projection type head mounted display. In the case of the laser retinal projection type, the “image light emitting area in the image light generation unit” can be defined as an image area recognized by the user's eyes.

  Further, for example, the head-mounted display may be a head-mounted display in which the optical image display unit covers only a part of the user's eye, in other words, the optical image display unit does not completely cover the user's eye. Good. The head mounted display may be a so-called monocular type head mounted display.

  FIG. 22 is an explanatory diagram showing an external configuration of the head-mounted display device 100 according to a modification. In the case of the example of FIG. 22A, the difference from the head-mounted display device 100 shown in FIG. 1 is that the image display unit 20b includes a right optical image display unit 26b instead of the right optical image display unit 26. And a point provided with a left optical image display unit 28 b instead of the left optical image display unit 28. The right optical image display unit 26b is formed smaller than the optical member of the above-described embodiment, and is disposed obliquely above the right eye of the user when the head-mounted display device 100b is worn. Similarly, the left optical image display unit 28b is formed smaller than the optical member of the above-described embodiment, and is disposed obliquely above the left eye of the user when the head-mounted display device 100b is worn. In the case of the example of FIG. 22B, the difference from the head-mounted display device 100 shown in FIG. 1 is that the image display unit 20c includes a right optical image display unit 26c instead of the right optical image display unit 26. And a point provided with a left optical image display unit 28 c instead of the left optical image display unit 28. The right optical image display unit 26c is formed smaller than the optical member of the above-described embodiment, and is disposed obliquely below the right eye of the user when the head mounted display is mounted. The left optical image display unit 28c is formed smaller than the optical member of the above-described embodiment, and is disposed obliquely below the left eye of the user when the head mounted display is mounted. Thus, it is sufficient that the optical image display unit is disposed in the vicinity of the user's eyes. The size of the optical member forming the optical image display unit is also arbitrary, and the optical image display unit covers only a part of the user's eye, in other words, the optical image display unit completely covers the user's eye. This can be realized as a head-mounted display device 100 in an uncovered form.

  The earphone may be an ear-hook type or a headband type, or may be omitted. Further, for example, it may be configured as a head mounted display mounted on a vehicle such as an automobile or an airplane. Further, for example, it may be configured as a head-mounted display built in a body protective device such as a helmet.

  The configuration of the head-mounted display device 100 in the above embodiment is merely an example and can be variously modified. For example, one of the direction key 16 and the track pad 14 provided in the control unit 10 may be omitted, in addition to the direction key 16 and the track pad 14, or in place of the direction key 16 and the track pad 14, etc. An operation interface may be provided. Moreover, the control part 10 is a structure which can connect input devices, such as a keyboard and a mouse | mouth, and is good also as what receives an input from a keyboard or a mouse | mouth.

  In addition, instead of the image display unit 20 worn like glasses, an image display unit of another method such as an image display unit worn like a hat may be employed as the image display unit. The earphones 32 and 34 can be omitted as appropriate.

  In the above-described embodiment, the head-mounted display device 100 may guide image light representing the same image to the left and right eyes of the user so that the user can visually recognize the two-dimensional image. It is also possible to guide the user to view the three-dimensional image by guiding image light representing different images to the eyes.

  In the above embodiment, a part of the configuration realized by hardware may be replaced by software, and conversely, a part of the configuration realized by software may be replaced by hardware. Good. For example, in the above-described embodiment, the image processing unit 160 and the sound processing unit 170 are realized by the CPU 140 reading and executing a computer program, but these functional units may be realized by a hardware circuit. Good.

  In addition, when part or all of the functions of the present invention are realized by software, the software (computer program) can be provided in a form stored in a computer-readable recording medium. In the present invention, the “computer-readable recording medium” is not limited to a portable recording medium such as a flexible disk or a CD-ROM, but an internal storage device in a computer such as various RAMs and ROMs, a hard disk, etc. It also includes an external storage device fixed to the computer.

  Moreover, in the said embodiment, as shown in FIG. 1 and FIG. 2, the control part 10 and the image display part 20 are formed as a separate structure, However, about the structure of the control part 10 and the image display part 20, about. However, the present invention is not limited to this, and various modifications are possible. For example, all of the components formed in the control unit 10 may be formed inside the image display unit 20 or a part thereof may be formed. In addition, the power source 130 in the above embodiment may be formed independently and replaceable, or the configuration formed in the control unit 10 may be overlapped and formed in the image display unit 20. For example, the CPU 140 shown in FIG. 2 may be formed in both the control unit 10 and the image display unit 20, or a function performed by the CPU 140 formed in the control unit 10 and the CPU formed in the image display unit 20. May be configured separately.

  In the above embodiment, the specific image control unit 165 creates the specific image data, and transmits the control signal of the specific image data to the image processing unit 160 and the display control unit 190, thereby controlling the intermediate image and the like. However, it is not always necessary for the specific image control unit 165 to control the intermediate image or the like, and the subject of control can be variously modified. For example, instead of the specific image control unit 165, the image processing unit 160 and the display control unit 190 themselves may create specific image data. Further, the backlight control units 201 and 202 of the image display unit 20 may change the image light generated based on the specific image data by adjusting the luminance.

  Moreover, the aspect of the wearable computer with which the control part 10 and the image display part 20 are integrated and attached to a user's clothes may be sufficient.

  The present invention is not limited to the above-described embodiments and modifications, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments and the modifications corresponding to the technical features in each form described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 10 ... Control part 11 ... Decision key 12 ... Illumination part 13 ... Display switching key 14 ... Trackpad 15 ... Luminance switching key 16 ... Direction key 17 ... Menu key 18 ... Power switch 20 ... Image display part 21 ... Right holding part 22 ... Right display drive unit 23 ... Left holding unit 24 ... Left display drive unit 26 ... Right optical image display unit 28 ... Left optical image display unit 30 ... Earphone plug 32 ... Right earphone 34 ... Left earphone 40 ... Connection unit 42 ... Right cord 44 ... Left code 46 ... Connecting member 48 ... Body code 51,52 ... Transmitting part 53,54 ... Receiving part 61 ... Camera (imaging part)
62 ... Thermography (temperature detector)
66 ... 9-axis sensor (line-of-sight direction specifying part)
DESCRIPTION OF SYMBOLS 100 ... Head-mounted display apparatus 110 ... Input information acquisition part 120 ... Memory | storage part 130 ... Power supply 132 ... Wireless communication part 134 ... GPS module (position information acquisition part)
135: Operation unit 140 ... CPU
150 ... Operating system 160 ... Image processing unit 165 ... Specific image control unit (control unit)
166 ... Gaze direction determination unit (gaze direction identification unit)
168 ... Image determination unit (object extraction unit)
170: Audio processing unit 180 ... Interface 190 ... Display control unit 201 ... Right backlight control unit (light source)
202 ... Left backlight control unit (light source)
211 ... Right LCD controller (image forming panel)
212 ... Left LCD control unit (image forming panel)
221 ... Right backlight (light source)
222 ... Left backlight (light source)
241 ... Right LCD (image forming panel)
242 ... Left LCD (image forming panel)
251 ... Right projection optical system 252 ... Left projection optical system 261 ... Right light guide plate 262 ... Left light guide plate VSync ... Vertical sync signal HSync ... Horizontal sync signal PCLK ... Clock signal IMG1 ... Selection menu screen IMG2 ... Menu image OA ... External device RE ... right eye LE ... left eye TE ... period EL, ER ... end IL ... illumination light PL ... image light PN ... maximum image display area AP ... tip part VR ... visual field CS ... cursor SI1, SI2, SI3, SI4, SI5 SI6, SI7, SI8, SI9 ... specific image (second image light)
MI1, MI2 ... Intermediate image (first image light)
PI ... Preliminary image (first image light)

Claims (12)

A transmissive head-mounted display device,
An image having an image light generation unit that generates and emits image light based on image data, and allows the user to visually recognize the image light as a virtual image and transmit the outside scene while being mounted on the user's head A display unit;
A control unit configured to set specific image light that is generated based on set specific image data and changes with time as the image light to be visually recognized by the user using the image display unit. Head mounted display device. The head-mounted display device according to claim 1,
The specific image data is set based on specific information,
The specific image light includes a plurality of types of first image light and a second image light different from the plurality of types of first image light,
The control unit changes the image light to be visually recognized by a user using the image display unit from the plurality of types of first image light to the second image light as time passes. Head-mounted display device. The head-mounted display device according to claim 2,
The head-mounted display device in which each of the plurality of types of first image light and the second image light differ only in luminance. The head-mounted display device according to claim 3,
The image light generation unit includes a light source capable of adjusting the amount of light emitted, and an image forming panel that converts light emitted from the light source into the image light,
The head-mounted display device, wherein the control unit adjusts the amount of light emitted from the light source to change the luminance of each of the plurality of types of first image light and the second image light. The head-mounted display device according to claim 3 or 4, wherein
The brightness of the second image light is greater than the brightness of each of the plurality of types of first image light,
The control unit uses the image display unit,
The second image light after the plurality of types of first image light is visually recognized from a state in which neither of the plurality of types of first image light or the second image light is visually recognized by the user. When changing to a state of visually recognizing the user, the user can visually recognize the plurality of types of first image light so that the luminance of the plurality of types of first image light increases as time passes.
Any of the plurality of types of first image light and the second image light from a state where the plurality of types of first image light is visually recognized after the user has visually recognized the second image light. A head-mounted display device that allows the user to visually recognize the plurality of types of first image light so that the luminance decreases with the passage of time when changing to a state that the user does not visually recognize. The head-mounted display device according to claim 5,
The control unit uses the image display unit,
The second image light after the plurality of types of first image light is visually recognized from a state in which neither of the plurality of types of first image light or the second image light is visually recognized by the user. When changing to a state of visually recognizing the image, the user can visually recognize the plurality of types of first image light so that the increase rate of the luminance of the plurality of types of first image light increases with time. Let
Any of the plurality of types of first image light and the second image light from a state where the plurality of types of first image light is visually recognized after the user has visually recognized the second image light. A head-mounted display device that allows the user to visually recognize the plurality of types of first image light so that the rate of decrease in luminance increases with the passage of time when changing to a state that is not visually recognized by the user. . The head-mounted display device according to claim 2,
Each of the plurality of types of first image light is a part of the second image light,
The control unit uses the image display unit,
The second image light after the plurality of types of first image light is visually recognized from a state in which neither of the plurality of types of first image light or the second image light is visually recognized by the user. In the case of changing to a state of visually recognizing the image, the user can visually recognize the plurality of types of first image light so that the sizes of the regions of the plurality of types of first image light increase with time. Let
Any of the plurality of types of first image light and the second image light from a state where the plurality of types of first image light is visually recognized after the user has visually recognized the second image light. When changing to a state in which the user does not visually recognize the user, the plurality of types of first image lights are used so that the sizes of the regions of the plurality of types of first image light decrease with time. Head-mounted display device for visual recognition. The head-mounted display device according to any one of claims 2 to 7, further comprising:
It has a temperature detector that detects the temperature distribution of the outside scene in the direction of the user's line of sight,
The head-mounted display device, wherein the specific information includes information for specifying a temperature distribution of the detected outside scene. The head-mounted display device according to any one of claims 2 to 8, further comprising:
An imaging unit that captures an outside scene in the user's line-of-sight direction;
An object extraction unit that extracts a specific object included in the captured image,
The head-mounted display device, wherein the specific information is information relating to the extracted specific object. The head-mounted display device according to any one of claims 2 to 9, further comprising:
A position information acquisition unit for acquiring position information for specifying the position of the user;
The head-mounted display device, wherein the specific information includes the acquired position information. The head-mounted display device according to any one of claims 2 to 10, further comprising:
A line-of-sight direction specifying unit that acquires line-of-sight direction information, which is information for specifying a user's line-of-sight direction,
The head-mounted display device, wherein the specific information includes the line-of-sight direction information. An image having an image light generation unit that generates and emits image light based on image data, and allows the user to visually recognize the image light as a virtual image and transmit the outside scene while being mounted on the user's head A control method of a transmissive head-mounted display device comprising a display unit,
A method comprising: setting specific image light that is generated based on set specific image data and changes with time as the image light to be visually recognized by a user using the image display unit.