JP2017009684A - Optical wheel device, light source device and projection device, optical wheel device position adjustment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical wheel device that improves working properties in position adjustment of optical wheels.SOLUTION: An optical wheel device comprises: an optical wheel 101; and a wheel motor that rotates the optical wheel 101 to be driven. Then a lens holder 107 holding an optical component includes a boss part 107b that is arranged opposing the optical wheel 101, and protrudes toward the optical wheel 101. Then, a position adjustment unit composed of an elongated hole and a bolt 108 makes the optical wheel 101 movable to a direction of a rotating shaft of the wheel motor. A lens holder movement part comprises: a base member 119a; and a spacer 119b. Then, by th lens holder movement part, the lens holder 107 is moved to an orthogonal direction with respect to the rotation shaft of the wheel motor so as to be located from a state where the boss part 107b abuts against a prescribed area of the optical wheel 101 to a non-abutting state.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an optical wheel device, a light source device and a projection device including the optical wheel device, and a position adjusting method for the optical wheel device.

  2. Description of the Related Art Today, data projectors are widely used as image projection apparatuses that project a screen of a personal computer, a video image, an image based on image data stored in a memory card or the like onto a screen. This projector focuses light emitted from a light source on a micromirror display element called DMD (digital micromirror device) or a liquid crystal plate to display a color image on a screen.

  Projectors that are projection devices have been used for a wide range of applications from business presentations to home use with the spread of video equipment such as personal computers and DVD players. Conventionally, projectors using a high-intensity discharge lamp as a light source have been the mainstream in such projectors. However, in recent years, a plurality of semiconductor light emitting elements such as laser diodes have been used as the light source, and the semiconductor light emitting element is used as an excitation light source. Various projection apparatuses including a fluorescent plate have been developed.

  The projection device disclosed in Patent Document 1 includes a red light source device, a fluorescent light emitting region that emits fluorescent light in a green wavelength band when emitted light from an excitation light irradiation device that is blue wavelength band light is emitted as excitation light, and excitation An optical wheel device including an optical wheel having a diffuse transmission region that diffuses and transmits light emitted from the light irradiation device is disposed. The excitation light irradiating device is also used as a blue light source because the emitted light is diffused and transmitted through the diffusion transmission region of the optical wheel.

  In this projection apparatus, a condensing lens group is arranged on the front side of the optical wheel so as to face the optical wheel. Excitation light is applied to the fluorescent light emission region of the optical wheel through this condensing lens group, and fluorescent light of green wavelength band light is emitted. The fluorescent light is guided to the display element through the condenser lens group by the dichroic mirror or the like with the same optical axis as the red wavelength band light and the blue wavelength band light. In addition, the blue wavelength band light diffused and transmitted through the diffuse transmission region is condensed by the condenser lens, and then is made to have the same optical axis as the red wavelength band light and the green wavelength band light through a reflection mirror or the like. Light is guided to the display element.

JP 2013-97233 A

  An optical component such as a condensing lens arranged opposite to an optical wheel such as a fluorescent wheel on which a fluorescent light emitting area is laid, collects light and irradiates the optical wheel, or collects light from the optical wheel. To do. For this reason, if the positional relationship between the front surface of the optical wheel and these optical components is different from the design value, problems such as color unevenness and insufficient illuminance are caused in the projection light projected on the screen. Therefore, when the optical wheel is arranged in the projection device, a gap gauge is inserted between the optical component and the optical wheel, and the optical wheel device is mounted on the housing of the projection device while measuring the distance between the optical component and the optical wheel. The work to fix to.

  However, the work of adjusting the position of the optical wheel while inserting a gap gauge between the optical component and the optical wheel is very troublesome. Furthermore, when an optical element such as a fluorescent light emitting region or a diffusion plate is provided on the optical wheel, there is a possibility that the optical wheel may be damaged by scratching the optical element by inserting a gap gauge.

  Therefore, the objective of this invention provides the optical wheel apparatus which improved the workability | operativity in the position adjustment of an optical wheel, the light source device provided with this optical wheel apparatus, a projection apparatus, and the position adjustment method of an optical wheel apparatus.

  The optical wheel device of the present invention includes an optical wheel, a wheel motor that rotationally drives the optical wheel, a boss that is disposed to face the optical wheel while holding an optical component, and projects toward the optical wheel. A lens holder, a position adjusting unit that moves the optical wheel in the direction of the rotation axis of the wheel motor, and the boss portion that is in a non-contact state from a state in which the boss portion is in contact with a predetermined region of the optical wheel. And a lens holder moving section that moves the lens holder in a direction orthogonal to the rotation axis of the wheel motor.

  The light source device of the present invention includes the above-described optical wheel device and an excitation light irradiation device that is configured by a semiconductor light emitting element and emits excitation light. The optical wheel is fluorescent when irradiated with excitation light. It has a fluorescent light emitting region that emits light.

  The projection device of the present invention is the above-described light source device, a display element that is irradiated with light source light from the light source device to form image light, and a projection side that projects the image light emitted from the display element onto a screen. It has an optical system, the said display element, and the projection apparatus control part which controls the said light source device, It is characterized by the above-mentioned.

  According to the optical wheel device position adjusting method of the present invention, an optical wheel disposed opposite to a lens holder that holds an optical component and is directly fixed to a base member is brought close to the lens holder, so that the optical Projecting toward the wheel and contacting a boss provided on the lens holder; removing the lens holder from the base member; attaching the lens holder to the base member via a spacer; And a step of positioning the portion outside the region formed by the outer periphery of the optical wheel.

  ADVANTAGE OF THE INVENTION According to this invention, the optical wheel apparatus which improved the workability | operativity in position adjustment of an optical wheel, a light source device provided with this optical wheel apparatus, a projection apparatus, and the position adjustment method of an optical wheel apparatus can be provided.

1 is an external perspective view showing a projection apparatus according to a first embodiment of the present invention. It is a figure which shows the functional block of the projection apparatus which concerns on 1st embodiment of this invention. It is a plane schematic diagram which shows the internal structure of the projection apparatus which concerns on 1st embodiment of this invention. It is a front view of the optical wheel concerning a first embodiment of the present invention. It is a top view which shows the principal part of the assembly | attachment state of the optical wheel apparatus which concerns on 1st embodiment of this invention. It is a front view of the lens holder which concerns on 1st embodiment of this invention. It is a front view which concerns on the position adjustment of the optical wheel apparatus which concerns on 1st embodiment of this invention, (a) shows before the movement of a lens holder, (b) shows after the movement of a lens holder. It is a top view which shows the principal part of the assembly | attachment state of the optical wheel apparatus which concerns on 2nd embodiment of this invention. It is a front view which concerns on position adjustment of the optical wheel apparatus which concerns on 2nd embodiment of this invention, (a) shows before the movement of a lens holder, (b) shows after the movement of a lens holder. It is a front view of the lens holder which concerns on 3rd embodiment of this invention. It is a front view of the optical wheel device concerning a third embodiment of the present invention.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of the projection apparatus 10. In the present embodiment, left and right in the projection device 10 indicate the left and right direction with respect to the projection direction, and front and rear indicate the screen side direction of the projection device 10 and the front and rear direction with respect to the traveling direction of the light flux.

  As shown in FIG. 1, the projection device 10 has a substantially rectangular parallelepiped shape, and has a lens cover 19 that covers the projection port on the side of the front panel 12 that is a side plate in front of the housing of the projection device 10. At the same time, the front panel 12 is provided with a plurality of exhaust holes 17. Further, although not shown, an Ir receiver for receiving a control signal from the remote controller is provided.

  Further, a key / indicator unit 37 is provided on the top panel 11 of the casing, and the key / indicator unit 37 switches a power switch key, a power indicator for notifying power on / off, and switching on / off of projection. Keys and indicators such as an overheat indicator for notifying when a projection switch key, a light source device, a display element, a control circuit or the like is overheated are arranged.

  In addition, an input / output connector portion provided with a D-SUB terminal, an S terminal, an RCA terminal, an audio output terminal, and the like for inputting a video signal to which a USB terminal or an analog RGB video signal is input to the rear panel is provided on the rear surface of the housing; Various terminals (group) 20 such as a power adapter plug are provided. In addition, a plurality of intake holes are formed in the back panel. A plurality of exhaust holes 17 are formed in the right side panel, which is a side plate of the casing (not shown), and the left side panel 15 and the front panel 12, which are side plates shown in FIG. An intake hole 18 is also formed in the corner of the left panel 15 near the rear panel and the rear panel.

  Next, the projector control unit of the projector 10 will be described with reference to the functional block diagram of FIG. The projection device control unit includes a control unit 38, an input / output interface 22, an image conversion unit 23, a display encoder 24, a display drive unit 26, and the like.

  The control unit 38 controls the operation of each circuit in the projection apparatus 10, and includes a CPU, a ROM that stores operation programs such as various settings fixedly, and a RAM that is used as a work memory. ing.

  The image signal of various standards input from the input / output connector unit 21 by the projection device control unit is in a predetermined format suitable for display by the image conversion unit 23 via the input / output interface 22 and the system bus (SB). After being converted so as to be unified into the image signal, it is output to the display encoder 24.

  The display encoder 24 develops and stores the input image signal in the video RAM 25, generates a video signal from the stored contents of the video RAM 25, and outputs the video signal to the display driving unit 26.

  The display driving unit 26 functions as a display element control unit, and drives the display element 51 that is a spatial light modulation element (SOM) at an appropriate frame rate in accordance with the image signal output from the display encoder 24. Is. Then, the projection device 10 irradiates the display element 51 with a light beam emitted from the light source device 60 via a light source side optical system, which will be described later, thereby forming an optical image with the reflected light of the display element 51 and projecting it. An image is projected and displayed on a screen (not shown) through the side optical system. The movable lens group 235 of the projection side optical system is driven by the lens motor 45 for zoom adjustment and focus adjustment.

  The image compression / decompression unit 31 performs a recording process in which the luminance signal and the color difference signal of the image signal are data-compressed by a process such as ADCT and Huffman encoding, and sequentially written in a memory card 32 that is a detachable recording medium. .

  Further, the image compression / decompression unit 31 reads the image data recorded on the memory card 32 in the reproduction mode, decompresses each image data constituting a series of moving images in units of one frame, and converts the image data into an image conversion Based on the image data that is output to the display encoder 24 via the unit 23 and stored in the memory card 32, a process for enabling display of a moving image or the like is performed.

  Then, an operation signal of a key / indicator unit 37 composed of a main key and an indicator provided on the top panel 11 of the housing is directly sent to the control unit 38, and a key operation signal from the remote controller is received by Ir. The code signal received by the unit 35 and demodulated by the Ir processing unit 36 is output to the control unit 38.

  Note that an audio processing unit 47 is connected to the control unit 38 via a system bus (SB). The sound processing unit 47 includes a sound source circuit such as a PCM sound source, converts the sound data into analog in the projection mode and the playback mode, and drives the speaker 48 to emit loud sounds.

  Further, the control unit 38 controls a light source control circuit 41 as a light source control unit, and the light source control circuit 41 is configured so that light of a predetermined wavelength band required at the time of image generation is emitted from the light source device 60. Individual control is performed to emit red, green, and blue wavelength band light from the excitation light source and the red light source device at a predetermined timing.

  Further, the control unit 38 causes the cooling fan drive control circuit 43 to perform temperature detection using a plurality of temperature sensors provided in the light source device 60 and the like, and controls the rotation speed of the cooling fan based on the temperature detection result. Further, the control unit 38 causes the cooling fan drive control circuit 43 to maintain the rotation of the cooling fan even after the projection apparatus 10 body is turned off by a timer or the like, or depending on the result of temperature detection by the temperature sensor, Control such as turning off the power is also performed.

  Next, the internal structure of the projection apparatus 10 will be described with reference to FIG. FIG. 3 is a schematic plan view showing the internal structure of the projection apparatus 10. The projection apparatus 10 includes a control circuit board 241 in the vicinity of the right panel 14. The control circuit board 241 includes a power circuit block, a light source control block, and the like. In addition, the projection device 10 includes a light source device 60 at the side of the control circuit board 241, that is, at a substantially central portion of the housing of the projection device 10. Further, in the projector 10, a light source side optical system 170 and a projection side optical system 220 are disposed between the light source device 60 and the left panel 15.

  The light source device 60 is a red light source device 120 that is a light source of red wavelength band light, a blue light source device that is a light source of blue wavelength band light, an excitation light irradiation device 70 that is also used as an excitation light source, and a green wavelength. A green light source device 80 which is a light source for band light. The green light source device 80 includes the excitation light irradiation device 70 and the optical wheel device 100. The light source device 60 is provided with a light guiding optical system 140 that guides and emits light of each wavelength band of red, green, and blue. The light guide optical system 140 condenses each color wavelength band light emitted from each color light source device at the entrance of the light tunnel 175.

  An excitation light irradiation device 70 that is an excitation light source constituting the green light source device 80 is disposed in the vicinity of the rear panel 13 at a substantially central portion in the left-right direction of the housing of the projection device 10. The excitation light irradiation device 70 includes a light source group including a blue laser diode 71 that is a plurality of semiconductor light emitting elements arranged so that the optical axis is parallel to the back panel 13, and light emitted from each blue laser diode 71. Reflective mirror group 75 that converts the axis 90 degrees in the direction of the front panel 12, a condensing lens 78 that collects the emitted light from each blue laser diode 71 reflected by the reflective mirror group 75, and the blue laser diode 71 and the right panel 14 and the like.

  The light source group includes a plurality of blue laser diodes 71 arranged in a matrix. On the optical axis of each blue laser diode 71, a collimator lens 73 that converts the light emitted from each blue laser diode 71 into parallel light is arranged so as to enhance the directivity of each emitted light. In addition, the reflecting mirror group 75 is formed by aligning a plurality of reflecting mirrors in a stepped manner and integrated with the mirror substrate 76 to adjust the position, and uniformizes the cross-sectional area of the light beam emitted from the blue laser diode 71. The image is reduced in the direction and emitted to the condenser lens 78.

  A cooling fan 261 is disposed between the heat sink 81 and the back panel 13, and the blue laser diode 71 is cooled by the cooling fan 261 and the heat sink 81.

  The red light source device 120 includes a red light source 121 disposed so that the optical axis is parallel to the blue laser diode 71, and a condensing lens group 125 that condenses light emitted from the red light source 121. The red light source 121 is a red light emitting diode that is a semiconductor light emitting element that emits light in a red wavelength band. Then, the red light source device 120 is configured such that the optical wavelength axis of the red wavelength band light emitted from the red light source device 120 is the blue wavelength band light emitted from the excitation light irradiation device 70 and the green wavelength band light emitted from the optical wheel 101. It is arranged to intersect the axis. Furthermore, the red light source device 120 includes a heat sink 130 disposed on the right panel 14 side of the red light source 121. A cooling fan 261 is disposed between the heat sink 130 and the front panel 12, and the red light source 121 is cooled by the cooling fan 261 and the heat sink 130.

  The optical wheel device 100 is arranged to be parallel to the front panel 12, that is, the optical wheel 101 disposed so as to be orthogonal to the optical axis of the emitted light from the excitation light irradiation device 70, and the optical wheel 101 is rotationally driven. A wheel motor 110 that performs the focusing operation, and an optical component that condenses the light bundle of the excitation light emitted from the excitation light irradiation device 70 on the optical wheel 101 and the light bundle emitted from the optical wheel 101 toward the rear panel 13. A lens holder 107 such as a barrel that holds the condenser lens group 109 to be collected, and a condenser lens 115 that condenses the beam bundle emitted from the optical wheel 101 toward the front panel 12. A heat sink 262 is disposed between the wheel motor 110 and the front panel 12, and the optical wheel device 100 and the like are cooled by the heat sink 262.

  The optical wheel 101 is formed in a disk shape as shown in FIG. The substrate 102 of the optical wheel 101 is a metal substrate made of copper, aluminum, or the like. The base material 102 is fixed to the motor shaft 114 of the wheel motor 110. An annular groove is formed on the front surface of the base material 102, that is, on the surface on the excitation light irradiation device 70 side. The bottom of the groove is mirrored by silver vapor deposition or the like. The fluorescent light emitting region 103 is formed by laying a green phosphor layer on the surface of the mirror-processed groove. Further, the diffuse transmission region 104 is formed by inserting a transparent base material having a surface with fine irregularities formed by sandblasting or the like in a cut-out hole portion of the base material 102. In this way, the fluorescence emission region 103 and the diffuse transmission region 104 are arranged side by side in the circumferential direction.

  When blue wavelength band light as excitation light from the excitation light irradiation device 70 is irradiated to the phosphor layer of the fluorescent light emitting region 103, the green phosphor is excited, and green wavelength band light is emitted from this green phosphor in all directions. Emitted. The fluorescent light beam is emitted to the front side of the optical wheel 101 shown in FIG. 3 (in other words, to the rear panel 13 side), and enters a lens holder 107 including a condensing lens group 109. On the other hand, the blue wavelength band light from the excitation light irradiating device 70 incident on the diffuse transmission region 104 in the optical wheel 101 is diffused and transmitted through the optical wheel 101, and the back side of the optical wheel 101 (in other words, the front panel 12 side). ).

  The light guide optical system 140 includes a condensing lens that condenses the light bundles of the red, green, and blue wavelength bands, and a reflection mirror that converts the optical axes of the light bundles of the respective color wavelength bands into the same optical axis, It consists of a dichroic mirror. Specifically, the light guide optical system 140 includes blue wavelength band light emitted from the excitation light irradiation device 70, green wavelength band light emitted from the optical wheel 101, and red wavelength emitted from the red light source device 120. A first dichroic mirror that transmits blue and red wavelength band light, reflects green wavelength band light, and converts the optical axis of the green wavelength band light by 90 degrees toward the left panel 15 at a position where the band light intersects. 141 is arranged.

  Further, the blue wavelength band light is reflected on the optical axis of the blue wavelength band light diffusely transmitted through the optical wheel 101, that is, between the condenser lens 115 and the front panel 12, and the optical axis of the blue light is changed. A first reflecting mirror 143 that converts 90 degrees in the direction of the left panel 15 is disposed. A condensing lens 146 is disposed on the left panel 15 side of the first reflecting mirror 143, and a second reflecting mirror 145 is disposed on the left panel 15 side of the condensing lens 146. A condensing lens 147 is disposed on the rear panel 13 side of the second reflecting mirror 145. The second reflection mirror 145 converts the optical axis of the blue wavelength band light reflected by the first reflection mirror 143 and incident via the condenser lens 146 to the rear panel 13 side by 90 degrees.

  A condensing lens 149 is disposed on the left panel 15 side of the first dichroic mirror 141. Further, a second dichroic mirror 148 is disposed on the left panel 15 side of the condenser lens 149 and on the rear panel 13 side of the condenser lens 147. The second dichroic mirror 148 reflects the red wavelength band light and the green wavelength band light, converts the 90 ° optical axis to the back panel 13 side, and transmits the blue wavelength band light.

  The optical axis of the red wavelength band light transmitted through the first dichroic mirror 141 is coincident with the optical axis of the green wavelength band light reflected by the first dichroic mirror 141. Both the red wavelength band light transmitted through the first dichroic mirror 141 and the green wavelength band light reflected by the first dichroic mirror 141 are incident on the condenser lens 149. Then, the red and green wavelength band light transmitted through the condensing lens 149 is reflected by the second dichroic mirror 148 and is condensed at the entrance of the light tunnel 175 via the condensing lens 173 of the light source side optical system 170. . On the other hand, the blue wavelength band light that has passed through the condenser lens 147 passes through the second dichroic mirror 148 and is condensed at the entrance of the light tunnel 175 via the condenser lens 173.

  The light source side optical system 170 includes a condenser lens 173, a light tunnel 175, a condenser lens 178, an optical axis conversion mirror 181, a condenser lens 183, an irradiation mirror 185, and a condenser lens 195. The condenser lens 195 emits the image light emitted from the display element 51 disposed on the back panel 13 side of the condenser lens 195 toward the fixed lens group 225 and the movable lens group 235, so that the projection side optical system 220 is used. It is also part of.

  In the vicinity of the light tunnel 175, a condenser lens 173 that condenses the light source light at the entrance of the light tunnel 175 is disposed. Therefore, the red wavelength band light, the green wavelength band light, and the blue wavelength band light are collected by the condenser lens 173 and enter the light tunnel 175. The light beam incident on the light tunnel 175 is converted into a light beam having a uniform intensity distribution by the light tunnel 175.

  On the optical axis on the back panel 13 side of the light tunnel 175, an optical axis conversion mirror 181 is disposed via a condenser lens 178. The beam bundle emitted from the exit of the light tunnel 175 is condensed by the condenser lens 178 and then the optical axis is converted to the left panel 15 side by the optical axis conversion mirror 181.

  The light beam reflected by the optical axis conversion mirror 181 is condensed by the condenser lens 183 and then irradiated by the irradiation mirror 185 to the display element 51 through the condenser lens 195 at a predetermined angle. The display element 51 that is a DMD is provided with a heat sink 190 on the back panel 13 side, and the display element 51 is cooled by the heat sink 190.

  The light beam that is the light source light irradiated to the image forming surface of the display element 51 by the light source side optical system 170 is reflected by the image forming surface of the display element 51 and projected onto the screen through the projection side optical system 220 as projection light. Is done. Here, the projection side optical system 220 includes a condenser lens 195, a movable lens group 235, and a fixed lens group 225. The fixed lens group 225 is built in the fixed lens barrel. The movable lens group 235 is built in the movable lens barrel and can be moved by a lens motor, thereby enabling zoom adjustment and focus adjustment.

  By configuring the projection device 10 in this way, when the optical wheel 101 is rotated and light is emitted from the excitation light irradiation device 70 and the red light source device 120 at different timings, light of each wavelength band of red, green, and blue is guided. Since the light enters the condenser lens 173 and the light tunnel 175 sequentially via the optical optical system 140 and further enters the display element 51 via the light source side optical system 170, the DMD that is the display element 51 of the projection apparatus 10 receives data. Accordingly, the color image can be projected onto the screen by displaying each color light in a time-sharing manner.

  Here, when the optical wheel device 100 is disposed in the projection device 10, the distance between the optical wheel 101 and the condensing lens group 109 of the lens holder 107 is important in optical design. That is, the distance between the front side of the optical wheel 101 and the condensing lens group 109 of the lens holder 107 is designed so that appropriate image light is emitted to the screen. If the distance between the optical wheel 101 and the condensing lens group 109 of the lens holder 107 is slightly different from the design value, color unevenness, illuminance unevenness, etc. may occur in the image projected on the screen.

  Therefore, in the present embodiment, by configuring the optical wheel device 100 as described below, the distance between the optical wheel 101 and the condensing lens group 109 of the lens holder 107 is adjusted. FIG. 5 is a plan view showing the assembled state of the optical wheel device 100 more specifically. The wheel motor 110 of the optical wheel device 100 is fixed to the support member 112 via a motor base plate 110a. The support member 112 is formed with a connecting portion 112a that is connected to the motor base plate 110a by a bolt 118 with a flat plate facing in the longitudinal direction in a vertical plate shape. The support member 112 includes a vertical plate-shaped control panel support 112b that protrudes forward from the right end (left end in the figure) with respect to the projection direction of the connection part 112a, and the left end (right end in the figure with respect to the projection direction of the connection part 112a). ), And a vertical plate-like support plate portion 112c protruding forward.

  The control panel support part 112b is provided with a motor control part 113 on the right side (left side in the figure) with respect to the projection direction. On the other hand, a flat plate-like fixing portion 112d is extended from the lower end (see FIGS. 7A and 7B) of the support plate portion 112c toward the left side (right side in the drawing) with respect to the projection direction. Long holes 112e through which the bolts 108 are inserted are formed in two places in the fixing portion 112d. Each long hole 112e has a major axis direction of the central axis direction of the motor shaft 114, that is, the direction of the rotation axis of the wheel motor 110 (in other words, the bundle of light beams emitted from the condenser lens group 109 of the lens holder 107). It is formed so as to be parallel to the optical axis L).

  On the other hand, as shown by a two-dot chain line in FIG. 5, the projection device 10 is formed with a pedestal 117 fixed integrally with the housing of the projection device 10. Then, the bolts 108 inserted into the two long holes 112e of the fixing portion 112d are screwed to the base 117 and fixed. In this way, the support member 112 is fixed to the pedestal 117, and the wheel motor 110 and the optical wheel 101 are fixed to the projection device 10. In this way, the upper surface of the pedestal 117 is the mounting surface of the support member 112. If the bolts 108 are loosened, the long holes 112e move relative to the bolts 108 to move the support member 112 back and forth, and the front and back positions of the optical wheel 101 can be adjusted. In this way, the position adjusting portion of the optical wheel 101 in the optical wheel device 100 is formed by the long hole 112e and the bolt 108.

  Furthermore, a long guide hole 112f is formed in the fixing portion 112d of the support member 112 on the right side of the long hole 112e for the bolt 108. The guide long hole 112f is also formed so that the long axis direction thereof is parallel to the central axis direction of the motor shaft 114 (the direction of the rotation axis of the wheel motor 110). A guide pin 117a erected from the pedestal 117 is inserted through the guide slot 112f. Therefore, the longitudinal movement of the support member 112 when the position of the optical wheel 101 is adjusted can be guided by the guide long hole 112f and the guide pin 117a.

  Further, as described above, the projection apparatus 10 is provided with the lens holder 107 facing the surface side of the optical wheel 101. As shown in FIG. 6, the lens holder 107 is formed in a substantially rectangular box shape. A condensing lens group 109 composed of a plurality of condensing lenses is held inside the lens holder 107. The light bundle of excitation light from the excitation light irradiation device 70 (see FIG. 3) is incident on the condensing lens group 109 of the lens holder 107 along the optical axis L, and the fluorescence emission region 103 (see FIG. 4) of the optical wheel 101. Irradiated on top. The fluorescent light emitted from the fluorescent light emitting region 103 is emitted toward the first dichroic mirror 141 by the condenser lens group 109 having an optical axis of L.

  As shown in FIG. 6, two fixing pins 107 a protrude downward from the lower surface of the lens holder 107. Then, as shown in FIG. 7B, the fixing pin 107a is inserted and fixed into a hole formed in the base member 119a and the plate-like spacer 119b fixed to the casing of the projection apparatus 10. The spacer 119b can be attached to and detached from the base member 119a by removing the lens holder 107. Alternatively, a space may be created by loosening a bolt (not shown) for inserting the spacer. The lens holder moving unit provided on the lower surface of the lens holder 107 is configured to include the base member 119a and the spacer 119b.

  Further, as shown in FIGS. 5 and 6, a boss portion 107 b is formed on a surface (surface on the optical wheel 101 side of the lens holder 107) facing the surface of the optical wheel 101 that is one surface of the lens holder 107. It protrudes toward the optical wheel 101 side. The boss portion 107b may be formed of a sheet metal or may be formed as a boss portion 107b by forming protrusions on the lens holders 107 and 207 themselves. The boss portion 107 b is formed substantially above the center position on one surface of the lens holder 107. The distance from the one surface of the lens holder 107 at the boss portion 107b to the protruding end of the boss portion 107b (that is, the height of the boss portion 107b) is the surface of the base member 102 of the optical wheel 101 (see FIG. 4). It is set so that the surface of the fluorescent light emitting region 103 of the optical wheel 101 and the condensing lens group 109 are at an appropriate distance when coming into contact with the protruding end.

  Next, a method for adjusting the position of the optical wheel device 100 for adjusting the distance between the condenser lens group 109 of the lens holder 107 and the optical wheel 101 will be described with reference to FIGS. In this position adjustment method, the optical wheel 101 disposed opposite to the lens holder 107 directly fixed to the base member 119a is brought close to the lens holder 107 and protrudes toward the optical wheel 101 so as to protrude to the lens holder 107. A step of bringing the lens holder 107 into contact with the boss 107b provided on the base member 119a, a step of removing the lens holder 107 from the base member 119a, or a step of loosening a bolt (not shown) for inserting the spacer from the side to make a space, and the lens holder 107 to the base member 119a. And attaching the boss portion 107b to the outside of the region formed by the outer periphery of the optical wheel 101.

  Specifically, first, as shown in FIG. 7 (a), the fixing pin 107a of the lens holder 107 is inserted into the hole of the base member 119a, and the lens holder 107 is directly fixed to the base member 119a. The holder 107 is temporarily placed. At this time, a part of the protruding end of the boss portion 107 b is positioned inside a region formed by the outer periphery of the optical wheel 101. Specifically, a part of the protruding end of the boss portion 107 b is in a positional relationship that allows contact with the radially outer peripheral surface 102 a of the fluorescent light emitting region 103 of the optical wheel 101.

  Then, with the bolt 108 loosened, the support member 112 is moved toward the lens holder 107 in parallel to the optical axis L (the direction of the rotation axis of the wheel motor 110). At this time, the support member 112 is moved toward the lens holder 107 until a part of the protruding end of the boss portion 107b comes into contact with the surface 102a of the base member 102. When a part of the protruding end of the boss 107b comes into contact with the surface 102a, the distance between the surface of the optical wheel 101 (the surface of the fluorescent light emitting region 103) and the condenser lens group 109 becomes an appropriate distance in terms of optical design. At this position, the bolt 108 is tightened to fix the support member 112 to the pedestal 117.

  After tightening the bolt 108, the lens holder 107 is once removed from the base member 119a. Or, a bolt (not shown) for inserting the spacer from the side is loosened to make a space. Thereafter, the spacer 119b is placed on the base member 119a. Then, as shown in FIG. 7B, the lens holder 107 is fixed to the base member 119a via the spacer 119b. At this time, the lens holder 107 is moved upward relative to the optical wheel 101 by the thickness T1 of the spacer 119b, as indicated by an arrow D1 in FIG. Then, the boss portion 107b is positioned outside the region formed on the outer periphery of the optical wheel 101. Therefore, even if the optical wheel 101 rotates, the optical wheel 101 and the boss 107b are brought into a non-contact state in which they do not interfere with each other.

  In other words, the lens holder moving unit including the base member 119a and the spacer 119b causes the boss 107b to be positioned from the inside to the outside of the region formed by the outer periphery of the optical wheel 101 (in other words, the boss 107b is optically The lens holder 107 is moved in a direction orthogonal to the optical axis L (the direction of the rotation axis of the wheel motor 110) so that the lens holder 107 is positioned from a state of contact with a predetermined region of the wheel 101 to a state of non-contact. The Therefore, the position of the optical wheel device 100 can be easily adjusted with a simple configuration. At this time, the lens holder 107 is moved to a non-contact state so that the optical axis of the excitation light corresponds to the fluorescence emission region 103 of the optical wheel 101.

(Second embodiment)
Next, a second embodiment according to the present invention will be described with reference to FIGS. 8 and 9A and 9B. In addition, the same code | symbol is attached | subjected to the member and location similar to 1st embodiment, and the description is abbreviate | omitted or simplified. In this embodiment, in place of the lens holder 107 in the first embodiment, a lens holder 207 in which two fixing pins 207a protrude from the right side surface (left side surface in the figure) with respect to the projection direction. The lens holder 207 holds the condenser lens group 109. The lens holder 207 is formed in a substantially rectangular box shape.

  Furthermore, in the present embodiment, the base member 219a is provided upright in a vertical plate shape on the casing of the projection apparatus 10. The flat portion of the base member 219a is disposed to face the right side surface of the lens holder 207. A spacer 219 b is provided between the base member 219 a and the right side surface of the lens holder 207. On the other hand, on the right side (left side in the figure) with respect to the projection direction of the lens holder 207, fixing pins 207a are provided at two locations, upper and lower. The fixing pin 207a is inserted through holes provided in the spacer 219b and the base member 219a, and the lens holder 207 is fixed to the base member 219a. When the lens holder 207 is removed, the spacer 219b can be attached to and detached from the base member 219a. The lens holder moving unit is configured by including the base member 219a and the spacer 219b.

  In addition, a boss portion 207 b is formed to protrude toward the optical wheel 101 on a surface facing the surface of the optical wheel 101 that is one surface of the lens holder 207. The boss portion 207b is formed on the upper side shifted from the approximate center position on one surface of the lens holder 207 to the left side (right side in the drawing) with respect to the projection direction (see FIGS. 9A and 9B). Also in the present embodiment, the height of the boss portion 207b is such that the surface of the fluorescent light emitting region 103 of the optical wheel 101 and the condensing lens when the surface of the base material 102 of the optical wheel 101 abuts the protruding end of the boss portion 207b. The distance from the group 109 is set to be an appropriate distance.

  Also in this embodiment, the position adjustment of the optical wheel 101 with respect to the condensing lens group 109 of the lens holder 207 can be performed similarly to the above-mentioned embodiment. That is, as shown in FIG. 9A, first, the fixing pin 207a provided on the right side (left side in the figure) with respect to the projection direction of the lens holder 207 is directly inserted into the base member 219a, and the lens holder 207 is thus inserted. Is directly fixed to the base member 219a and temporarily arranged. At this time, a part of the protruding end of the boss portion 207 b is positioned inside a region formed by the outer periphery of the optical wheel 101. Specifically, a part of the protruding end of the boss portion 207b is in a positional relationship that allows contact with the radially outer peripheral surface 102a of the fluorescent light emitting region 103 of the optical wheel 101.

  Then, the bolt 108 is loosened to move the support member 112 and the optical wheel 101 toward the lens holder 207 in parallel with the optical axis L (the direction of the rotation axis of the wheel motor 110). Then, the surface 102a of the optical wheel 101 and a part of the boss portion 207b are brought into contact with each other. At this time, the distance between the surface of the optical wheel 101 (the surface of the fluorescent light emitting region 103) and the condenser lens group 109 is an appropriate distance in terms of optical design. At this position, the bolt 108 is tightened to fix the support member 112 to the pedestal 117.

  Thereafter, a spacer 219b is sandwiched between the right side surface of the lens holder 207 and the base member 219a, and the lens holder 207 is fixed to the base member 219a via the spacer 219b as shown in FIG. 9B. At this time, the lens holder 207 has a radial outer direction on the left side in the projection direction indicated by the arrow D2 in FIG. Move outward). That is, the lens holder moving unit including the base member 219a and the spacer 219b causes the boss 207b to be positioned from the inside to the outside of the region formed by the outer periphery of the optical wheel 101 (in other words, the boss 207b is optically The lens holder 207 is moved in a direction orthogonal to the optical axis L (the direction of the rotation axis of the wheel motor 110) so that the lens holder 207 is positioned from a state of contact with a predetermined region of the wheel 101 to a state of non-contact. The Accordingly, the boss portion 207 b is positioned outside the region formed on the outer periphery of the optical wheel 101. Therefore, the optical wheel 101 and the boss portion 207b are not interfered with each other.

(Third embodiment)
Next, a third embodiment of the present invention is shown in FIGS. Also in the present embodiment, the same members and portions as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified. In the present embodiment, the optical wheel device 100 includes a lens holder 307 having a plurality of boss portions 307b-1 to 307b-1 to 307 in place of the lens holder 107 of the first embodiment. Two fixing pins 307 a-1 to 307 a-1 to 3 are provided on the lower surface and the left and right side surfaces of the lens holder 307, respectively.

  Also in the present embodiment, the heights of the boss portions 307b-1 to 307b-3 are different from the surface of the fluorescent light emitting region 103 of the optical wheel 101 when the surface of the base material 102 abuts against the boss portions 307b-1 to 307b-3. The distance between the condenser lens group 109 and the condenser lens group 109 is set to an appropriate distance in optical design. Then, using either one of the fixing pins 307a-1 to 307a-1 to 3 provided on the left and right side surfaces and the lower surface of the lens holder 307 and one of the boss portions 307b-1 to 307, the same as the adjustment method described above. In addition, the position of the optical wheel 101 relative to the condenser lens group 109 can be adjusted. In FIG. 11, the position is adjusted by a lens holder moving unit including a base member 319 a and a spacer 319 b disposed on the lower surface of the lens holder 307.

  As described above, by providing the lens holder 307 with the plurality of boss portions 307b-1 to 307b-3 and the fixing pins 307a-1 to 307, even if they are different products, the common lens holder 307 is used to make any boss portion. The position of the optical wheel 101 can be adjusted using 307b-1 to 307-3 and the fixing pins 307a-1 to 307a-1.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by these embodiment, A various change can be added and implemented. For example, the lens holders 107, 207, and 307 are fixed to the base members 119a, 219a, and 319a by the fixing pins 107a, 207a, and 307a-1 to 3. However, the present invention is not limited to this and may be fixed by bolts or the like. .

  Further, the lens holder moving unit is configured to include the base members 119a, 219a, 319a and the spacers 119b, 219b, 319b. 1 to 3) may be any mechanism that can move the optical axis L (the direction of the rotation axis of the wheel motor 110) in a direction orthogonal to the optical axis L. For example, a table on which the lens holders 107, 207, and 307 are placed can be a mechanism that slides with a screw mechanism. Similarly, the position adjusting unit for moving the optical wheel 101 is not limited to the configuration using the long holes 112e and the bolts 108.

  Further, according to the present embodiment, the optical wheel 101 and the boss portions 107b, 207b, 307b-1 to 3 are brought into contact with a part of the protruding ends of the boss portions 107b, 207b, 307b-1 to 3, You may make it contact | abut with the optical wheel 101 by all the protrusions. Note that the contact portion of the boss portions 107b, 207b, and 307b-1 to -3 in the optical wheel 101 is desirably a surface that does not affect image formation, such as the surface 102a.

  In each of the above-described embodiments, the lens holders 107, 207, and 307 take the adjustment positions where the spacers 119b, 219b, and 319b are inserted and the final fixed positions where the spacers 119b, 219b, and 319b are removed. However, the lens holders 107, 207, and 307 are movable in a direction perpendicular to the optical axis L of the excitation light (a direction perpendicular to the direction of the rotation axis of the wheel motor), and the lens holders 107, 207, and 307 are moved to the adjustment positions. The spacers 119b, 219b, and 319b may be omitted as long as they can be temporarily fixed and fixed at the final fixing position.

  Moreover, in each said embodiment, by moving the boss | hub parts 107b, 207b, and 307b-1 to the area | region corresponding to an outer side from the outer periphery of the optical wheel 101 from the area | region corresponding to an inner side from the outer periphery of the optical wheel 101. The bosses 107b, 207b, and 307b-1 to 307 are not brought into contact with the optical wheel 101. However, it is not limited to this. For example, by forming a step portion inside the outer periphery of the optical wheel, the boss portion is in contact with the optical wheel in the region corresponding to the inner side of the optical wheel, so that the optical wheel in the region corresponding to the inner side of the optical wheel. You may make it move to the non-contact state which does not contact. In this way, the lens holder may be moved to a non-contact state so that the optical axis of the excitation light corresponds to the fluorescent light emitting region 103 of the optical wheel 101.

  As described above, according to the embodiment of the present invention, the optical wheel device 100 includes the optical wheel 101, the wheel motor 110, and the condensing lens group 109 that is an optical component, and has boss portions 107b, 207b, and 307b-1. Lens holders 107, 207, and 307 provided with .about.3 are provided. Then, the position adjusting means moves the optical wheel 101 in parallel to the optical axis L of the light beam emitted from the lens holders 107, 207, and 307 (that is, in the direction of the rotation axis of the wheel motor 110). In addition, the lens holder moving unit moves the optical axis L (of the wheel motor 110) so that the bosses 107b, 207b, 307b-1 to -3 are positioned in a non-contact state from a state in which they contact a predetermined region of the optical wheel 101. The lens holders 107, 207, and 307 are moved in a direction orthogonal to the direction of the rotation axis.

  Thereby, the position adjustment of the optical wheel 101 with respect to the lens holders 107, 207, and 307 can be facilitated only by bringing the surface of the optical wheel 101 into contact with the boss portions 107b, 207b, and 307b-1 to 307. After the bosses 107b, 207b, 307b-1 to 307b-1 and the optical wheel 101 are brought into contact with each other, the lens holder 107, 207, 307 is moved with respect to the optical axis L (the direction of the rotation axis of the wheel motor 110) by the lens holder moving unit. The bosses 107b, 207b, 307b-1 to 307b-1 to -3 are moved in the orthogonal direction to be positioned from a state where they are in contact with a predetermined region of the optical wheel 101 to a state where they are not in contact. Accordingly, interference between the boss portions 107b, 207b, 307b-1 to -3 and the optical wheel 101 can be avoided.

  Further, a stepped portion is formed inside the outer periphery of the optical wheel 101, and the state where the boss portions 107b, 207b, 307b-1 to 3 are not in contact with a predetermined region of the optical wheel 101 corresponds to the inside of the optical wheel 101. The bosses 107b, 207b, and 307b-1 to 307 may not be in contact with the optical wheel 101 in the region. Alternatively, the bosses 107b, 207b, and 307b-1 to 3 may be positioned in a region corresponding to the outer side of the outer periphery of the optical wheel 101 to be in a non-contact state. Thereby, the optical wheel device 100 can be configured according to the arrangement state of devices around the optical wheel device 100.

  In the lens holder moving portion, the side surfaces of the lens holders 107, 207, and 307 and the base member 119a are fixed via the spacer 119b. Therefore, the lens holder moving part can be a simple structure including two plates (base member 119a and spacer 119b).

  In addition, the lens holder moving unit includes base members 119a and 319a and spacers 119b and 319b provided on the lower surfaces of the lens holders 107 and 307. Thereby, when the position of the optical wheel 101 is adjusted, the lens holder 107 can be easily attached and detached.

  The position adjustment unit is provided on a support member that supports the wheel motor 110. Thereby, the position adjustment part in which the position adjustment work of the optical wheel 101 is easy can be formed.

  The position adjusting unit has a long axis parallel to the optical axis L (the direction of the rotation axis of the wheel motor 110) and is provided in the support member 112, and the support member 112 is inserted into the long hole 112e. And a bolt 108 for fixing the screw to the mounting surface. Thereby, the position of the optical wheel 101 can be easily adjusted by loosening or tightening the bolt 108.

  The lens holder 307 is provided with a plurality of boss portions 307b-1 to 307b-1. Thereby, even if the lens holder 307 is used as a common component and the lens holder 307 is used in the optical wheel device 100 of various forms, the position adjustment operation of the optical wheel 101 can be easily performed.

  Further, the light source device 60 includes an optical wheel device 100 including an excitation light irradiation device 70 and an optical wheel 101 having a fluorescent light emitting region 103 that emits fluorescent light by excitation light from the excitation light irradiation device 70. Thereby, in the position adjustment of the optical wheel 101 having the fluorescent light emitting region 103, it is not necessary to use a gap gauge or the like, so that it is possible to reduce breakage of the phosphor layer which is easily damaged and easily peeled off. Therefore, since the light source device 60 can obtain appropriate fluorescent light from the phosphor layer having no defect, it can emit bright light source light.

  The light source device 60 includes an optical wheel device 100 that has a diffusion transmission region that is arranged in a circumferential direction with respect to the fluorescence emission region 103 and diffuses and transmits excitation light, and emits green wavelength band light. It has an excitation light irradiation device 70 constituted by a blue laser diode 71 that emits light in the wavelength band, and a red light source device 120. Thereby, the workability of the position adjustment of the optical wheel 101 can be improved, and the light source device 60 formed so that each color wavelength band light can be emitted can be provided.

  Further, the lens holders 107, 207, 307 and the bosses 107 b, 207 b, 307 b-1 to the predetermined area of the optical wheel 101 are matched with the fluorescent light emitting region 103 of the optical wheel 101 so that the optical axis of the excitation light corresponds. Move from a contact state to a non-contact state. Thereby, excitation light can be reliably irradiated to the fluorescence light emission area | region 103. FIG.

  The projection apparatus 10 includes a light source device 60, a display element 51, a projection-side optical system 220, and a projection device control unit. Thereby, it is possible to provide the projection apparatus 10 that improves the workability of the position adjustment of the optical wheel 101, reduces the manufacturing cost, and reduces the breakage of the optical element provided in the optical wheel 101.

  Further, the position adjustment method of the optical wheel device 100 is such that the optical wheel 101 is brought close to the lens holders 107, 207, and 307 that hold the condensing lens group 109 as an optical component and are directly fixed to the base member 119a. The bosses 107b, 207b, and 307b-1 to 3 are brought into contact with each other. Thereafter, the lens holders 107, 207, and 307 are detached from the base member 119a, and the spacers 119b are attached to the base member 119a, so that the bosses 107b, 207b, and 307b-1 to 3 are formed from the outer periphery of the optical wheel. Locate outside.

  As a result, the distance between the optical wheel 101 and the condensing lens group 109, which is an optical component, can be adjusted appropriately, so that the adjustment work can be facilitated and the product quality can be improved.

  Further, the embodiment described above is presented as an example, and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

The invention described in the first claim of the present application will be appended below.
[1] an optical wheel;
A wheel motor that rotationally drives the optical wheel;
A lens holder that holds an optical component and is disposed to face the optical wheel, and has a boss that protrudes toward the optical wheel;
A position adjusting unit that moves the optical wheel in the direction of the rotation axis of the wheel motor;
A lens holder moving unit that moves the lens holder in a direction orthogonal to the rotation axis of the wheel motor so that the boss is positioned in a non-contact state from a state in which the boss portion is in contact with a predetermined region of the optical wheel;
An optical wheel device comprising:
[2] A step portion is formed inside the outer periphery of the optical wheel, and the non-contact state is a state where the boss portion does not contact the optical wheel in a region corresponding to the inner side of the optical wheel. is there,
Alternatively, the non-contact state is a state in which the boss portion is located in a region corresponding to the outer side of the outer periphery of the optical wheel. The optical wheel device according to [1], wherein
[3] The lens holder moving unit includes a base member fixed to a side surface of the lens holder, and a spacer detachably provided between the lens holder and the base member. ] Or the optical wheel device according to [2].
[4] The optical wheel device according to [3], wherein the lens holder moving unit is provided on a lower surface of the lens holder.
[5] The optical wheel device according to any one of [1] to [4], wherein the position adjustment unit is provided on a support member that supports the wheel motor.
[6] The position adjusting unit includes a long hole provided in the support member with a long axis parallel to the direction of the rotation axis of the wheel motor, and is inserted through the long hole to fix the support member to the mounting surface. The optical wheel device according to [5], further including:
[7] The optical wheel device according to any one of [1] to [6], wherein a plurality of the boss portions are provided in the lens holder.
[8] The optical wheel device according to any one of [1] to [7],
An excitation light irradiation device configured by a semiconductor light emitting element and emitting excitation light;
Have
The optical wheel has a fluorescent light emitting region that emits fluorescent light when irradiated with excitation light.
[9] The optical wheel has a diffuse transmission region that is arranged in a circumferential direction with respect to the fluorescent light emission region and diffuses and transmits the emitted light from the excitation light irradiation device,
The fluorescent light emitting region emits green wavelength band light as the fluorescent light,
A red light source device constituted by a semiconductor light emitting element is provided,
The light source device according to [8], wherein the excitation light irradiation device emits blue wavelength band light by the semiconductor light emitting element.
[10] The light source device according to [9], wherein the lens holder is moved to the non-contact state so that an optical axis of the excitation light corresponds to the fluorescence emission region of the optical wheel. .
[11] The light source device according to [8] to [10],
A display element that is irradiated with light source light from the light source device to form image light;
A projection-side optical system that projects the image light emitted from the display element onto a screen;
The display element; and a projector control unit that controls the light source device;
A projection apparatus comprising:
[12] An optical wheel arranged opposite to a lens holder that holds an optical component and is directly fixed to a base member is brought close to the lens holder, and protrudes toward the optical wheel so as to protrude toward the optical wheel. A step of contacting the boss provided in the
Removing the lens holder from the base member;
Attaching the lens holder to the base member via a spacer, and positioning the boss part outside an area formed by the outer periphery of the optical wheel;
A method for adjusting the position of an optical wheel device, comprising:

DESCRIPTION OF SYMBOLS 10 Projector 11 Top panel 12 Front panel 13 Back panel 14 Right panel 15 Left panel 17 Exhaust hole 18 Intake hole 19 Lens cover 21 Input / output connector part 22 Input / output interface 23 Image conversion part 24 Display encoder 25 Video RAM
26 Display drive unit 31 Image compression / decompression unit 32 Memory card 35 Ir reception unit 36 Ir processing unit 37 Key / indicator unit 38 Control unit 41 Light source control circuit 43 Cooling fan drive control circuit 45 Lens motor 47 Audio processing unit 48 Speaker 51 Display Element 60 Light source device 70 Excitation light irradiation device 71 Blue laser diode 73 Collimator lens 75 Reflective mirror group 76 Mirror substrate 78 Condensing lens 80 Green light source device 81 Heat sink 100 Optical wheel device 101 Optical wheel 102 Base material 102a Surface 103 Fluorescence emission region 104 Diffuse transmission region 107 Lens holder 107a Fixing pin 107b Boss part 108 Bolt 109 Condensing lens group 110 Wheel motor 110a Motor base plate 112 Support member 112a Connection part 112b Control panel support part 12c Support plate part 112d Fixing part 112e Long hole 112f Guide long hole 113 Motor control part 114 Motor shaft 115 Condensing lens 117 Base 117a Guide pin 118 Bolt 119a Base member 119b Spacer 120 Red light source device 121 Red light source 125 Condensing lens group 130 heat sink 140 light guide optical system 141 first dichroic mirror 143 first reflection mirror 145 second reflection mirror 146 condensing lens 147 condensing lens 148 second dichroic mirror 149 condensing lens 170 light source side optical system 173 condensing lens 175 light Tunnel 178 Condensing lens 181 Optical axis conversion mirror 183 Condensing lens 185 Irradiation mirror 190 Heat sink 195 Condenser lens 207 Lens holder 207a Fixing pin 207b Boss portion 21 a base member 219b spacer 220 projecting side optical system 225 241 control circuit fixed lens group 235 movable lens substrate 261 cooling fan 262 heat sink 307 lens holder 307a-1 to 3 fixing pin 307b-1 to 3 boss 319a base member 319b spacer

Claims (12)

An optical wheel,
A wheel motor that rotationally drives the optical wheel;
A lens holder that holds an optical component and is disposed to face the optical wheel, and has a boss that protrudes toward the optical wheel;
A position adjusting unit that moves the optical wheel in the direction of the rotation axis of the wheel motor;
A lens holder moving unit that moves the lens holder in a direction orthogonal to the rotation axis of the wheel motor so that the boss is positioned in a non-contact state from a state in which the boss portion is in contact with a predetermined region of the optical wheel;
An optical wheel device comprising: A step portion is formed inside the outer periphery of the optical wheel, and the non-contact state is a state where the boss portion does not contact the optical wheel in a region corresponding to the inner side of the optical wheel.
The optical wheel device according to claim 1, wherein the non-contact state is a state in which the boss portion is located in a region corresponding to an outer side of an outer periphery of the optical wheel.   The said lens holder moving part is provided with the base member fixed to the side surface of the said lens holder, and the spacer provided detachably between the said lens holder and the said base member, The Claim 1 or Claim characterized by the above-mentioned. 2. The optical wheel device according to 2.   The optical wheel device according to claim 3, wherein the lens holder moving unit is provided on a lower surface of the lens holder.   The optical wheel device according to any one of claims 1 to 4, wherein the position adjustment unit is provided on a support member that supports the wheel motor.   The position adjusting unit includes a long hole provided in the support member with a long axis parallel to the direction of the rotation axis of the wheel motor, and a bolt inserted through the long hole to fix the support member to a mounting surface. The optical wheel device according to claim 5, comprising:   The optical wheel device according to any one of claims 1 to 6, wherein a plurality of the boss portions are provided in the lens holder. An optical wheel device according to any one of claims 1 to 7,
An excitation light irradiation device configured by a semiconductor light emitting element and emitting excitation light;
Have
The optical wheel has a fluorescent light emitting region that emits fluorescent light when irradiated with excitation light. The optical wheel has a diffusion transmission region that is arranged in a circumferential direction with respect to the fluorescence emission region and diffuses and transmits the emitted light from the excitation light irradiation device,
The fluorescent light emitting region emits green wavelength band light as the fluorescent light,
A red light source device constituted by a semiconductor light emitting element is provided,
The light source device according to claim 8, wherein the excitation light irradiation device emits blue wavelength band light by the semiconductor light emitting element.   The light source device according to claim 9, wherein the lens holder is moved to the non-contact state so that an optical axis of the excitation light corresponds to the fluorescent light emitting region of the optical wheel. A light source device according to claim 8 or 10,
A display element that is irradiated with light source light from the light source device to form image light;
A projection-side optical system that projects the image light emitted from the display element onto a screen;
The display element; and a projector control unit that controls the light source device;
A projection apparatus comprising: An optical wheel disposed opposite to a lens holder that holds an optical component and is directly fixed to a base member is brought close to the lens holder and protrudes toward the optical wheel, and is provided in the lens holder. A process of contacting the boss,
Removing the lens holder from the base member;
Attaching the lens holder to the base member via a spacer, and positioning the boss part outside an area formed by the outer periphery of the optical wheel;
A method for adjusting the position of an optical wheel device, comprising:

Images