JP2009042425A - Image display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display which displays a high quality image while reducing cost and size. <P>SOLUTION: The image display 30 is provided with a screen 41 which has a fluorescent regions 411 composed by containing a fluorescent material and a non-fluorescent regions 412 composed by substantially not containing the fluorescent material, a lot of the fluorescent regions 411 are scattered in planar view, the non-fluorescent regions 412 are provided so as to fill in the gap among the fluorescent regions 411, visible light is projected on the non-fluorescent region 412 and develops color, exciting light is projected on the fluorescent regions 411 and develops color different from that of the visible light by the fluorescence, thus the image corresponding to an image information is displayed on the screen 41. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image display device.

For example, an image display device that displays an image on a screen by scanning in the main scanning direction (horizontal direction) and the sub-scanning direction (vertical direction) while modulating the intensity of laser light is known (for example, Patent Document 1). reference.).
As such an image display apparatus, as disclosed in Patent Document 1, an apparatus that displays a full-color image has been proposed.

A full-color image is displayed by developing three primary colors of red, blue, and green. However, in Patent Document 1, two colors of the three primary colors are irradiated onto the screen, and the two colors are displayed on the screen. Each color is colored by scattering, and the phosphor uniformly applied on the screen is irradiated with an ultraviolet laser so that the phosphor is excited and the remaining one of the three primary colors is developed by the fluorescence. .
Thus, by displaying a full-color image using a phosphor, it is possible to reduce the size of the light source to be used. As a result, it is possible to reduce the size of the image display device.

  However, in the image display apparatus according to Patent Document 1, since the phosphor is uniformly applied on the screen, not only the ultraviolet laser but also two colors of the three primary colors are irradiated on the phosphor. The intensity of the two colors of light is attenuated by the phosphor on the screen. For this reason, the use efficiency of the two colors of light is poor, the quality of the image such as contrast and brightness is lowered, and a high-intensity light source is required so that the cost and size cannot be reduced sufficiently. There is.

JP 2003-287802 A

  An object of the present invention is to provide an image display device capable of displaying a high-quality image while reducing cost and size.

Such an object is achieved by the present invention described below.
An image display device of the present invention includes a screen having a fluorescent region including a fluorescent material,
A first light source that emits excitation light that can excite the fluorescent material, at least one second light source that emits visible light, and the first light source and the second light source according to image information, respectively. Light irradiating means comprising driving means for driving, and scanning means for scanning the light from each of the first light source and the second light source on the screen in the main scanning direction and the sub-scanning direction intersecting therewith, respectively. And
In addition to the fluorescent region, the screen includes a non-fluorescent region that is substantially free of the fluorescent material, and one of the fluorescent region and the non-fluorescent region is dispersed in a plan view. Provided, and the other region is provided so as to fill between the one region,
The visible light emitted from the second light source is projected onto the non-fluorescent region and diffused and colored, and the excitation light emitted from the first light source is projected onto the fluorescent region to produce the visible light. It is characterized in that it is colored by fluorescence with a color different from the above and an image corresponding to the image information is displayed on the screen.

  As a result, the visible light emitted from the second light source is projected onto the non-fluorescent region to emit light, so that the use efficiency can be improved by suppressing the attenuation of the visible light emitted from the second light source. Therefore, even if a light source having a relatively low emission intensity is used as the second light source, an image with excellent image contrast, brightness, and the like can be displayed. That is, it is possible to display a high-quality image while reducing the cost of the second light source.

In the image display device of the present invention, it is preferable that a large number of the fluorescent regions are provided in a dispersed manner in a plan view, and the non-fluorescent regions are provided so as to fill the space between the fluorescent regions.
Thereby, the fluorescent region can be formed relatively easily using various film forming methods.
In the image display device of the present invention, it is preferable that each of the fluorescent regions has a dot shape, and the plurality of fluorescent regions are regularly arranged in a plan view.
Thereby, even when the dot diameter of each fluorescent region is relatively large, it is possible to uniformly generate visible color and fluorescent color to display a high-quality image.

In the image display device of the present invention, it is preferable that each of the fluorescent regions has a dot shape, and the plurality of fluorescent regions are irregularly arranged in a plan view.
As a result, the generation of interference fringes can be prevented relatively easily and reliably, and a high-quality image can be displayed.
In the image display device of the present invention, it is preferable that the diameter of each of the fluorescent regions forming the dot shape is smaller than the spot diameter of the visible light and the excitation light on the screen.
Thereby, even if it combines visible light and excitation light and it irradiates to the same area | region on a screen simultaneously, while irradiating excitation light to a fluorescence area | region, visible light can be irradiated to a non-fluorescence area | region.

In the image display device of the present invention, the plurality of fluorescent regions are arranged such that at least two of the fluorescent regions are included in at least the spot of the excitation light of the visible light and the excitation light on the screen. It is preferable that
As a result, a high-quality image can be displayed without requiring high accuracy in the irradiation position of visible light and excitation light on the screen.

In the image display device of the present invention, the multiple fluorescent regions are arranged so that one fluorescent region is included in the spot of the excitation light of the visible light and the excitation light on the screen. It is preferable.
Thereby, it is possible to display a high-quality image while maintaining a constant ratio between the area of the region that emits light by visible light and the area that emits light by fluorescence.
In the image display device of the present invention, it is preferable that each of the fluorescent regions has a linear belt shape, and the plurality of fluorescent regions are provided so as to be parallel to each other at substantially equal intervals.
As a result, color development by visible light and color development by fluorescence can be generated uniformly, and a high-quality image can be displayed.

In the image display device of the present invention, it is preferable that each of the band-like fluorescent regions is provided so as to be parallel to the main scanning direction.
As a result, it is possible to display the high-quality image by main scanning the visible light and the excitation light while keeping the ratio of the area of the region emitting light by visible light and the area emitting light by fluorescence constant.

In the image display device of the present invention, it is preferable that each of the band-like fluorescent regions is provided so as to be parallel to the sub-scanning direction.
As a result, a high-quality image can be displayed without requiring high accuracy in the irradiation position of visible light and excitation light on the screen in the sub-scanning direction.
In the image display device of the present invention, it is preferable that the width of each of the fluorescent regions forming the band is smaller than the spot diameters of the visible light and the excitation light on the screen.
Thereby, even if it combines visible light and excitation light and it irradiates to the same area | region on a screen simultaneously, while irradiating excitation light to a fluorescence area | region, visible light can be irradiated to a non-fluorescence area | region.

In the image display device of the present invention, the light irradiation unit includes two light sources that emit light of two colors of red, green, and blue, respectively, as the second light source, and the fluorescent region includes the light source It is preferable that the excitation light from the second light source emits a color other than the two colors of red, green, and blue when irradiated with the excitation light.
Thereby, a full-color image can be displayed.

In the image display device of the present invention, the light irradiation unit includes two light sources that respectively emit red and blue light as the second light source, and the fluorescent region has excitation light from the second light source. It is preferable to be configured to develop a green color when irradiated with.
As a result, the first light source and the second light source can be configured by semiconductor lasers, respectively, and a full-color image can be displayed while reducing the size and cost of the image display device. Since there is no effective method for realizing a semiconductor laser that emits green light at this stage, the effect of applying the present invention becomes significant in such a case.

In the image display device of the present invention, the light irradiating means synthesizes the excitation light emitted from the first light source and the visible light emitted from the second light source, and the same area on the screen. It is preferable to be configured to irradiate simultaneously.
Accordingly, since the scanning unit only needs to scan one light, the configuration of the scanning unit can be simplified, and as a result, the image display apparatus can be reduced in size and cost.

In the image display device of the present invention, the excitation light that reflects the light in the wavelength band of the excitation light toward the screen on the opposite side of the screen from the side irradiated with the light from the light irradiation means. A wavelength band reflector is preferably provided.
Accordingly, excitation light that has passed through the screen without contributing to excitation of the fluorescent material can be fed back to the screen (fluorescence region) to promote excitation of the fluorescent material. As a result, it is possible to improve the apparent light emission efficiency (excitation efficiency from excitation light to fluorescence) of the fluorescent material by the excitation light, easily and reliably prevent the lack of color development due to the fluorescence, and display a high-quality image. . Furthermore, since unnecessary excitation light leakage can be prevented, a high-quality image can be displayed without losing color balance even when the excitation light is visible light.

In the image display device of the present invention, the side of the screen irradiated with the light from the light irradiating unit is allowed to transmit the visible light and the excitation light, and has a wavelength band of the fluorescence. It is preferable that a fluorescent wavelength band reflector that reflects the entire region or a part of the light is provided.
This allows the fluorescent material (screen) to scatter the fluorescent light scattered toward the incident side toward the emission side, thus increasing the amount of emitted fluorescent light (fluorescence utilization efficiency) and producing a high-luminance and high-quality image. Can be displayed. Furthermore, when the fluorescent wavelength band reflector has wavelength selectivity, the color purity can be further increased, and a high-luminance and high-quality image can be displayed.

In the image display device of the present invention, it is preferable that a microlens array for condensing the excitation light in the fluorescent region is provided on a side of the screen irradiated with light from the light irradiation unit. .
As a result, it is possible to improve the utilization efficiency of the excitation light, to easily and reliably prevent the shortage of coloring due to fluorescence, and to display a high-luminance and high-quality image.
In the image display device of the present invention, it is preferable that the first light source is a laser light source.
Thereby, the configuration of the optical system can be simplified, and the size and cost of the image display device can be reduced.

In the image display device of the present invention, it is preferable that the screen has a three-dimensional uneven portion.
Thereby, by displaying a three-dimensional image, the expressive power of the image can be enriched with unexpectedness and power.
In the image display device of the present invention, it is preferable that the screen can be advanced and retracted.
Thereby, the diversity of expression can be improved.
In the image display device of the present invention, it is preferable that the three-dimensional uneven shape is configured to change dynamically.
Thereby, the diversity of expression can be improved.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of an image display device of the invention will be described with reference to the accompanying drawings.
<First Embodiment>
First, a first embodiment of the image display device of the present invention will be described.
FIG. 1 is a perspective view showing an appearance of a slot machine to which the present invention is applied as a first embodiment of an image display apparatus according to the present invention.
Hereinafter, an example in which the image display device of the present invention is applied to a slot machine will be described. However, the image display device of the present invention is not particularly limited as long as it has a portion for displaying an image, and various devices. It is applicable to.

  The slot machine 10 includes a box-shaped casing 11, and a display window 12 is provided at the center of the front panel surface 11 a of the casing 11, and a console 11 b at the center front of the casing 11. Above, a start lever 14a, a bet button 14b, and a coin insertion slot 14c are provided. In addition, three stop buttons 16 are provided on the upper surface of the panel surface 11 c at the lower front surface of the housing 11.

  Further, in the housing 11, three spinning reels 21, 22, 23 are provided so as to face the display window 12, and a pattern formed on the peripheral surface of the three spinning reels 21, 22, 23. Can be observed through the display window 12 from the outside of the housing 11. Further, in the housing 11, a first screen 41 (hereinafter simply referred to as “screen 41”) that can advance and retreat in the vertical direction is provided near the lower portion of the display window 12. A second screen 42 (hereinafter also simply referred to as “screen 42”) that can move forward and backward is provided. These screens 41 and 42 constitute a part of an image display device 30 described later, and light is irradiated from the inside of the housing 11 to project an image. The image display device 30 will be described in detail later.

  Each spinning reel 21, 22, 23 starts rotating individually when the player pushes the bet button 14b and operates the start lever 14a after the coin is inserted into the coin insertion slot 14c. Then, when each stop button 16 is pressed by the player, the rotation of the corresponding reel among the spinning reels 21, 22, and 23 is stopped. When the rotations of all the reel reels 21, 22, and 23 are stopped and the patterns displayed on these peripheral surfaces are in a specific set, the corresponding coins are paid out. At this time, screens 41 and 42 appear in the display window 12 according to the progress of the game, and displays corresponding to the progress of the game, such as a win effect, a notice effect, a sign effect, etc. Various displays including it are performed. The specific display on the screens 41 and 42 includes, for example, displaying that it is an opportunity when a specific symbol such as cherry appears.

FIG. 2 is a longitudinal sectional view for explaining the image display device provided in the slot machine shown in FIG.
As described above, each reel 21, 22, 23 arranged to face the display window 12 is individually driven around a horizontal axis by being driven by a motor 25 which is a rotation driving device.
An image display device 30 according to the present invention is disposed around the spinning reels 21, 22, and 23.
The image display device 30 is a direct drawing type projector, and includes a screen device 40, a projector main body 50, a light guide optical system 60, and a display control device 80.

  The projector main body 50 is configured to emit two laser beams L1 and L2, as will be described in detail later. The laser beam L1 is emitted from the projector main body 50 so as to pass below the spinning reels 21, 22, and 23, is directly incident on the first screen 41, and is scanned on the first screen 41. On the other hand, the laser beam L2 is emitted from the projector main body 50 so as to pass through the rear side of the spinning reels 21, 22, and 23, enters the second screen 42 via the light guide optical system 60, and is incident on the second screen 42. Is scanned.

  As described above, the screen device 40 includes the first screen 41 and the second screen 42 provided in the vicinity of the display window 12, the first lifting device 44 for moving the first screen 41 back and forth, and the first screen 42 for moving the second screen 42 back and forth. 2 lifting device 45. Here, both the lifting and lowering devices 44 and 45 function as devices for moving (advancing and retreating) the screens 41 and 42 as necessary.

FIG. 3 is a diagram for explaining a screen provided in the image display apparatus shown in FIG. 2, wherein (a) is a plan view of the first screen 41 when no image is displayed, and (b). (A) is sectional drawing of the 1st screen 41 shown to (a), (c) is a top view which shows an example of the 1st screen 41 when the image is displayed.
The first screen 41 has a substantially long band shape, and a three-dimensional portion 41a having a three-dimensional shape is provided at the center in the longitudinal direction. The three-dimensional part 41a has a three-dimensional uneven shape protruding to the front side. In the present embodiment, the three-dimensional part 41a is shown as a convex part protruding only on the front side, but the three-dimensional part 41a may be formed as a concave part protruding (recessed) only rearward. Alternatively, it may be formed as an uneven portion protruding forward and backward.

  As described above, the laser light L1 emitted from the projector main body 50 shown in FIG. The laser beam L1 is scanned in the main scanning direction and the sub-scanning direction intersecting the entire area on the first screen 41 including the three-dimensional part 41a. Thus, for example, a facial expression EI imitating, for example, a facial projection can be drawn (displayed) on the three-dimensional portion 41a in correspondence with, for example, a hit effect, a notice effect, or a sign effect (see FIG. 3C).

  In the above description, it is assumed that drawing (image display) is performed on almost the entire first screen 41. However, the projector body 50 can set a drawing range by the laser light L1 with a high degree of freedom. Therefore, for example, only one of the first to third areas A1 to A3 shown in FIG. 3C can be drawn, or drawing can be performed by switching these areas A1 to A3.

The first screen 41 includes a fluorescent region including a fluorescent material. As described later, the first screen 41 scatters visible light to generate color, and excites the fluorescent region with excitation light to generate color by fluorescence. An image can be displayed. The first screen 41 will be described later in detail.
Further, the second screen 42 (see FIG. 2) also has the same structure as the first screen 41 described above, and is scanned at a proper position in the second screen 42 by scanning with the laser light L2 emitted from the projector main body 50. For example, it is possible to display a stereoscopic image or the like that changes in response to a hit effect, a notice effect, a sign effect, or the like.

  The first lifting device 44 can lift and lower the first screen 41 under the control of the display control device 80, and the display position (solid line) where the first screen 41 is lifted and exposed to the lower part of the display window 12; The first screen 41 can be lowered and moved back and forth between the non-display position (dotted line) retracted below the display window 12. In other words, when the first screen 41 is not displayed, the first screen 41 is moved to the non-display position and hidden. On the other hand, when the first screen 41 is displayed, the first screen 41 is moved to the display position. Thus, the display window 12 can be observed. Furthermore, it is possible to increase the unexpectedness and power as a display effect accompanying the progress of the game, including image distortion caused by movement of the three-dimensional part.

The second lifting and lowering device 45 can also lift and lower the second screen 42 under the control of the display control device 80, and the display position (solid line) where the second screen 42 is lowered and exposed to the upper part of the display window 12, The second screen 42 can be moved up and down with respect to the non-display position (dotted line) retracted above the display window 12. That is, when the display is not performed on the second screen 42, the second screen 42 is moved to the retracted position to be hidden, and when the display is performed on the second screen 42, the second screen 42 is moved to the display position. Thus, it is possible to observe through the display window 12.
The projector main body 50 is disposed below the spinning reels 21, 22, and 23, and directly or indirectly irradiates the screens 41 and 42 with the laser beams L1 and L2.

FIG. 4 is a schematic diagram showing a schematic configuration of the light irradiation means provided in the image display apparatus shown in FIG.
The projector main body 50 includes a light source device 51 that emits a modulated small-diameter light beam as substantially parallel light, a light scanning unit (scanning unit) 53 that scans the light beam from the light source device 51, a light source device 51, and a light scanning unit. And a driving device (driving means) 55 that operates 53 in accordance with an input signal.

The light source device 51 includes laser light sources (light sources) 51r, 51b, and 51v for each color, three collimator lenses 52a1, 52a2, and 52a3 provided corresponding to the laser light sources 51r, 51b, and 51v, a mirror 52c, and a dichroic. Mirrors 52v and 52b.
The laser light source 51v emits blue-violet laser light VV (hereinafter also simply referred to as “excitation light”) that is excitation light that can excite the fluorescent material (first light source). The laser light source 51r emits red laser light RR (hereinafter also simply referred to as “visible light”) that is visible light (second light source). The laser light source 51b emits blue laser light BB (hereinafter also simply referred to as “visible light”) that is visible light (second light source). The laser beams RR, BB, and VV of the respective colors are modulated corresponding to the driving signal transmitted from the driving device 55, and are collimated by collimator lenses 52a1, 52a2, and 52a3 that are collimating optical elements to form thin beams.

The dichroic mirror 52v has a characteristic of reflecting the blue-violet laser light VV, and the dichroic mirror 52b has a characteristic of reflecting the blue laser light BB.
The laser beam RR reflected by the mirror 52c, the laser beam VV reflected by the dichroic mirror 52v, and the laser beam BB reflected by the dichroic mirror 52b are combined into one laser beam LL.
That is, the laser beam VV, the laser beam RR, and the laser beam BB are combined and simultaneously irradiated onto the same areas on the screens 41 and 42. Thereby, since the optical scanning unit 53 only needs to scan one light, the configuration of the optical scanning unit 53 can be simplified. As a result, the image display device 30 can be reduced in size and cost. it can.

In the light source device 51 described above, a collimator mirror can be used in place of the collimator lenses 52a1, 52a2, and 52a3. In this case as well, a narrow beam of parallel light beams can be formed. Further, when the laser beams emitted from the laser light sources 51r, 51b, and 51v of the respective colors are parallel light beams, the collimator lenses 52a1, 52a2, and 52a3 can be omitted. Furthermore, the laser light sources 51r, 51b, and 51v can be replaced with light sources such as light emitting diodes that generate similar light beams.
As described above, when the laser light sources 51r, 51b, and 51v are laser light sources, the configuration of the optical system can be simplified, and the image display device 30 can be reduced in size and cost.

The optical scanning unit 53 scans the light from each of the laser light sources 51r, 51b, and 51v on the screens 41 and 42 in the main scanning direction and the sub-scanning direction intersecting with the mirrors. 53d and 53e.
The mirror 53a is provided to be rotatable about the rotation axis AX1, and the mirror 53b is provided to be rotatable about the rotation axis AX2. The actuator 53d operates in accordance with a drive signal from the drive device 55 and appropriately rotates the mirror 53a around the rotation axis AX1, and the actuator 53e operates in accordance with the drive signal from the drive device 55 to move the mirror 53b around the rotation axis AX2. Rotate appropriately. Accordingly, the main scanning can be performed in the direction perpendicular to the rotation axis AX1 by the rotation of the mirror 53a, and the sub-scanning can be performed in the direction perpendicular to the rotation axis AX2 by the rotation of the mirror 53b. As a result, the laser light LL having passed through the mirrors 53a and 53b can be directly drawn at arbitrary positions on the screens 41 and 42 by scanning a desired area two-dimensionally as the laser lights L1 and L2.

As the optical scanning unit 53, for example, a biaxial galvanometer mirror or a MEMS (Micro Electro Mechanical Systems) element in which an actuator is integrally formed on a semiconductor substrate by a thin film manufacturing process can be used.
The driving device 55 drives the light source device 51 and the optical scanning unit 53 in accordance with an electrical signal (image information) transmitted from a control device (not shown). The driving device 55 controls the operations of the light source device 51 and the optical scanning unit 53 while synchronizing the light source device 51 and the optical scanning unit 53, and adjusts the intensity, projection position, irradiation timing, and the like of the laser light LL. I do.

FIG. 5 is a diagram for explaining optical scanning by the light irradiation means (projector body 50) shown in FIG. In FIG. 5, a projected image on the screen 41 is schematically shown.
Laser light L1 (see FIG. 4) emitted from the projector main body 50 is first along the trajectory TR1 in the X direction positive direction (right direction in FIG. 5) from the uppermost left end of the image display area DD of the screen 41. Scanned. At this time, the respective outputs of the laser light sources 51r, 51b, 51v in FIG. 4 are controlled, and the pixels PE1 arranged in the X direction are illuminated (projected) with the necessary luminance by the spot-like laser light L1.

  Next, the laser beam L1 reaching the right end of the image display area DD is shifted by one pixel in the Y direction negative direction (downward in FIG. 5), and then in the X direction negative direction (left direction in FIG. 5). Are scanned along the trajectory TR2. At this time, the outputs of the laser light sources 51r, 51b, and 51v in FIG. 4 are controlled, and the pixels PE2 arranged in the X direction are illuminated (projected) with the necessary luminance by the spot-like laser light L1.

  The laser beam L1 that has reached the right end of the image display area DD again is shifted by one pixel in the negative Y direction, and then scanned along the trajectory TR3 in the positive X direction. At this time, the respective outputs of the laser light sources 51r, 51b, 51v in FIG. 4 are controlled, and the pixels PE3 arranged in the X direction are illuminated with the necessary luminance by the spot-like laser light L1. Thereafter, by repeating the above-described operation, the laser beam L1 is scanned over the entire image display area DD.

  Note that FIG. 5 illustrates a case where drawing is performed on a planar portion, but the same drawing can be performed on the above-described three-dimensional portion 41a. However, since the pixels PE1, PE2,... Shown in FIG. 5 are projected on the curved surface for the three-dimensional part 41a, an image with distortion corrected in advance can be projected as necessary. For this purpose, an image processing circuit and a storage device are provided in the display control device 80, which will be described later, so that high-speed arithmetic processing and a large amount of images are stored. Thereby, the projection distortion can be removed in advance by image processing such as coordinate conversion, or an image in which the projection distortion is canceled by the three-dimensional part 41a can be stored in advance, so that the three-dimensional part 41a has no distortion. Can be projected.

  The light guide optical system 60 (see FIG. 2) is an intervening mirror disposed on the optical path of the laser light L2, and reflects the laser light L2 emitted from the projector main body 50 toward the second screen 42. Here, the reflecting surface of the light guide optical system 60 is not limited to a simple spherical surface but can be formed as an arbitrarily shaped curved surface (aspherical surface), and a light beam emitted from the projector body 50 is projected on the second screen 42. It is configured to appropriately enter the region. Further, since the light beam emitted from the projector main body 50 is an extremely thin beam as described above, the image drawn on the second screen 42 can be made free from blur and distortion.

6 is a block diagram showing a schematic configuration of a control system of the image display apparatus shown in FIG.
The display control device 80 is a circuit device that operates based on a control signal from the game control circuit 90, and includes a display control circuit 81, an image processing circuit 82, and a storage device 84.
The display control circuit 81 controls the overall operation of the image display device 30 based on the control signal from the game control circuit 90. Specifically, the display control circuit 81 determines the operation timing and display contents of the projector main body 50 based on the control signal from the game control circuit 90 and controls the driving of the lifting devices 44 and 45.
Under the control of the display control circuit 81, the image processing circuit 82 appropriately operates the driving device 55 based on a command from the game control circuit, and causes the projector main body 50 to perform necessary drawing. The storage device 84 stores image information such as a pattern and a character as a source of an image to be projected onto the screens 41 and 42 by the projector main body 50.

  In the slot machine 10 described above, since the optical scanning unit 53 scans the laser beams L1 and L2 from the light source device 51 on the screens 41 and 42, an arbitrary image is drawn on the screens 41 and 42 with high quality. Such images can be used to produce various and sophisticated effects during the progress of the game. When drawing is performed on the screens 41 and 42 by scanning the laser beams L1 and L2 by the light scanning unit 53, the display position and display area of the image including the arrangement of the screens 41 and 42 can be freely changed. Can increase the diversity of expression. Furthermore, since a three-dimensional drawing can also be performed on the three-dimensional part 41a to display a three-dimensional image, the display effects accompanying the progress of the game can be rich with unexpectedness and power. .

Here, the first screen 41 will be described in detail. Since the second screen 42 is the same as the first screen 41, the description thereof is omitted.
7 is an enlarged plan view of a screen provided in the image display apparatus shown in FIG. 2, and FIG. 8 is a cross-sectional view taken along line AA in FIG.
As shown in FIG. 7, a large number of first screens 41 are provided dispersed in a plan view, and a plurality of fluorescent regions 411 configured to include a fluorescent material and the spaces between the fluorescent regions 411 are filled. A non-fluorescent region 412 that is provided and is substantially free of the fluorescent material.

  Since the first screen 41 has such a configuration, the visible light emitted from the laser light sources 51r and 51b as the second light sources is projected on the non-fluorescent region 412 and is colored, and is also the first light source. The excitation light emitted from the laser light source 51v is projected onto the fluorescent region 411 and is colored by fluorescence with a color different from the visible light, and an image is displayed on the first screen 41. More specifically, red R and blue B are developed in the non-fluorescent region 412 by the laser beams RR and BB, and green G by fluorescence is developed in the fluorescent region 411 by the excitation light VV. It is displayed on the first screen 41.

  As a result, visible light emitted from the laser light sources 51r and 51b as the second light sources is projected onto the non-fluorescent region 412, and thus emits light, so that the use efficiency can be improved by suppressing attenuation of the visible light. Therefore, even if laser light sources 51r and 51b having relatively low emission intensity are used, an image with excellent image contrast and brightness can be displayed. That is, it is possible to display a high-quality image while reducing the cost of the laser light sources 51r and 51b.

Hereinafter, the first screen 41 will be described more specifically.
As shown in FIG. 8, the first screen 41 has a screen body 413, and a large number of fluorescent regions 411 are provided on the surface of the screen body 413 on the incident side of the laser light L <b> 1 at a distance from each other. A region between the fluorescent regions 411 constitutes a non-fluorescent region 412.
The first light transmission layer 414, the fluorescence wavelength band reflector (fluorescence reflection layer) 415, the second light transmission layer 416, and the microlens array 417 are arranged on the laser beam L1 incident side of the screen body 413. They are stacked in order. On the other hand, an excitation light wavelength band reflector (excitation light reflection layer) 418 is provided on the laser beam L 1 emission side of the screen body 413.
The screen body 413 is composed of a diffuser capable of diffusing light, and diffuses light of wavelength components corresponding to the laser beams RR and BB among the wavelength components included in the laser beam L1 and fluorescence generated in the fluorescence region 411. Thus, it has a function of displaying an image.

As shown in FIG. 7, each fluorescent region 411 has a dot shape (circular shape) in plan view, and a large number of fluorescent regions 411 are arranged in a lattice shape (square lattice shape) at intervals. .
In addition, the planar view shape of each fluorescence area | region 411 is not limited to what was mentioned above, For example, polygons, such as a triangle and a quadrangle, and an ellipse may be sufficient.
The fluorescent material included in the fluorescent region 411 is not particularly limited as long as it is excited by the laser light VV that is the excitation light described above and emits green fluorescence, and various fluorescent materials can be used. However, those which are not excited by the laser light from the laser light sources 51r and 51b and have high emission efficiency by the laser light from the laser light source 51v, such as ZnS; Cu, Al, etc., are preferably used.

  Examples of fluorescent materials that emit green light include 9,10-bis [(9-ethyl-3-carbazole) -vinylenyl] -anthracene, poly (9,9-dihexyl-2,7-vinylenefluorenylene). ), Poly [(9,9-dioctylfluorene-2,7-diyl) -co- (1,4-diphenylene-vinylene-2-methoxy-5- {2-ethylhexyloxy} benzene)], poly [(9 , 9-dioctyl-2,7-divinylenefluorenylene) -ortho-co- (2-methoxy-5- (2-ethoxylhexyloxy) -1,4-phenylene)], among these One kind can be used alone, or two or more kinds can be used in combination.

As described above, when each fluorescent region 411 is configured to develop a green color when irradiated with excitation light from the laser light source 51v, each of the laser light sources 51r, 51b, and 51v is configured by a semiconductor laser, and the image display device 30 is configured. It is possible to display a full-color image while reducing the size and cost. Since there is no effective method for realizing a semiconductor laser that emits green light at this stage, the effect of applying the present invention becomes significant in such a case.
In this embodiment, green is emitted by fluorescence, but red can be emitted by fluorescence, or blue can be emitted by fluorescence.

  Examples of fluorescent materials that emit red light include tris (1-phenylisoquinoline) iridium (III), poly [2,5-bis (3,7-dimethyloctyloxy) -1,4-phenylene vinylene], poly [ 2-methoxy-5- (2′-ethylhexyloxy) -1,4- (1-cyanovinylene) phenylene], poly [2-methoxy-5- (3,7-dimethyloctyloxy) -1,4-phenylenevinylene Among these, one kind can be used alone or two or more kinds can be used in combination.

  Examples of fluorescent materials that emit blue light include 4,4′-bis (9-ethyl-3-carbazovinylene) -1,1′-biphenyl, poly [(9.9-dioctylfluorene-2,7- Diyl) -co- (2,5-dimethoxybenzene-1,4-diyl)], poly [(9,9-dihexyloxyfluorene-2,7-diyl) -ortho-co- (2-methoxy-5 {2-ethoxyhexyloxy} phenylene-1,4-diyl)], poly [(9,9-dioctylfluorene-2,7-diyl) -co- (ethylnylbenzene)] and the like. One kind can be used alone, or two or more kinds can be used in combination.

As described above, the dot-like fluorescent regions 411 provided in a dispersed manner can be formed relatively easily by using various film forming methods. In particular, an inkjet method is suitably used for forming such a large number of fluorescent regions 411. In the case where the fluorescent region 411 is formed using an ink jet method, a liquid in which a fluorescent material as described above is dissolved in a solvent or dispersed in a dispersion medium is used. In addition, a liquid repellent treatment is applied to a portion on the screen main body 413 except for a portion where a large number of fluorescent regions 411 are to be formed, and a liquid as described above is applied by various coating methods to form a large number of fluorescent regions 411. be able to.
In addition, since a large number of fluorescent regions 411 are regularly arranged in a plan view, even when the dot diameter of each fluorescent region 411 is relatively large, coloring by visible light and coloring by fluorescence are caused uniformly. High-quality images can be displayed.

In the present embodiment, the diameter of each fluorescent region 411 is smaller than the spot diameter of the laser beam L1 on the screen 41. The multiple fluorescent regions 411 are arranged so that about six fluorescent regions 411 are included in a spot (that is, one pixel) of laser light (visible light and excitation light) on the screen 41.
As described above, since the diameter of each fluorescent region 411 is smaller than the spot diameter of the laser beam L1 on the screen 41, even if the visible light and the excitation light are combined and simultaneously irradiated to the same region on the screen 41, the fluorescent region 411 And the non-fluorescent region 412 can be irradiated with visible light.
Particularly, since the two or more fluorescent regions 411 are included in the spot of the laser beam L1 on the screen 41, the irradiation position of the visible light and the excitation light on the screen 41 does not require high accuracy. In addition, a high-quality image can be displayed.

  The first light transmission layer 414 is provided so as to fill the space between the fluorescent regions 411 described above and cover each fluorescent region 411. Such first light transmission layer 414 is made of, for example, glass or resin, and is configured to transmit light of each wavelength of red, blue, green, and blue-violet. A portion between the fluorescent regions 411 in the first light transmission layer 414 constitutes a non-fluorescent region 412 configured substantially not including the fluorescent material described above.

The first light transmission layer 414 also has a function as a spacer that keeps the distance between each fluorescent region 411 and a fluorescent wavelength band reflector 415 and a microlens array 417 described later at an optimum distance.
Note that the first light transmission layer 414 can be omitted. In this case, a gap may be formed between the fluorescent regions 411, or an incident side layer (fluorescent wavelength band reflector 415) described later may be brought into close contact with the screen body 413 between the fluorescent regions 411. .

The fluorescence wavelength band reflector 415 is provided on the incident side of the laser beam L1 with respect to the screen 41, and allows the fluorescence generated in the fluorescence region 411 while allowing the laser beams RR, BB, and VV in the laser beam L1 to pass therethrough. It has a function of reflecting the whole or part of the wavelength band. As a result, the direction of fluorescence scattered to the incident side by the screen 41 can be changed to the original emission side, so that the amount of emitted fluorescence (efficiency of fluorescence) is increased, and high brightness and high quality are achieved. An image can be displayed. Furthermore, when the fluorescent wavelength band reflector has wavelength selectivity, the color purity can be further increased, and a high-luminance and high-quality image can be displayed.
Such a fluorescent wavelength band reflector 415 is not particularly limited as long as it has a function as described above, and can be composed of, for example, a dielectric multilayer film.
The fluorescent wavelength band reflector 415 can be omitted.

The second light transmission layer 416 is formed so as to fill a gap between a microlens array 417 and a fluorescent wavelength band reflector 415, which will be described later, and has a function of supporting the microlens array 417. Similar to the first light transmission layer 414 described above, the second light transmission layer 416 is made of, for example, glass or resin, and transmits light having wavelengths of red, blue, green, and blue-violet. It is configured.
The second light transmission layer 416 also has a function as a spacer that keeps the distance between each fluorescent region 411 and a microlens array 417 described later at an optimum distance.
Note that the second light transmission layer 416 can be omitted.

As shown in FIG. 7, the microlens array 417 has a large number of microlenses 417 a arranged in a lattice shape so as to correspond to the fluorescent regions 411 in a plan view. In the present embodiment, each microlens 417a is arranged so that the center thereof coincides with the center of the corresponding fluorescent region 411 in plan view.
Each such microlens 417a collects excitation light in each corresponding fluorescent region 411. As a result, it is possible to improve the utilization efficiency of the excitation light, to easily and reliably prevent the shortage of coloring due to fluorescence, and to display a high-quality image.

  On the other hand, the excitation light wavelength band reflector 418 provided on the opposite side (observation side) of the laser light L1 with respect to the screen 41 transmits light in the wavelength band of the excitation light to the screen 41 (more specifically, the fluorescent region). 411). As a result, excitation light transmitted through the screen 41 without contributing to excitation of the fluorescent material can be fed back to the screen 41 (fluorescence region 411) to promote excitation of the fluorescent material. As a result, it is possible to improve the apparent light emission efficiency (excitation efficiency from excitation light to fluorescence) of the fluorescent material by the excitation light, easily and reliably prevent the lack of color development due to the fluorescence, and display a high-quality image. . Furthermore, since unnecessary excitation light can be prevented from leaking, even when the excitation light is visible light, a high-quality image can be displayed without losing color balance.

  According to the image display device 30 as described above, visible light emitted from the laser light sources 51r and 51b as the second light sources is projected onto the non-fluorescent region 412 and emits light, so that attenuation of the visible light is suppressed. The utilization efficiency can be improved. Therefore, even if laser light sources 51r and 51b having relatively low emission intensity are used, an image with excellent image contrast and brightness can be displayed. That is, it is possible to display a high-quality image while reducing the costs of the laser light sources 51r and 51b (and thus reducing the cost of the image display device 30).

Second Embodiment
Next, a second embodiment of the image display device of the present invention will be described.
FIG. 9 is an enlarged plan view of a screen provided in the image display apparatus according to the second embodiment of the present invention.
Hereinafter, the image display apparatus according to the second embodiment will be described focusing on the differences from the image display apparatus according to the first embodiment described above, and description of similar matters will be omitted.

As shown in FIG. 9, the image display apparatus according to the second embodiment is different in that the arrangement of the fluorescent region, the non-fluorescent region, and the microlens is different, and the spot diameters of the laser light (visible light and excitation light) are different. Is substantially the same as the image display device 30 of the first embodiment.
In the image display device according to the second embodiment, as shown in FIG. 9, in a plan view, a large number of fluorescent regions 411A configured to include a fluorescent material are arranged in a staggered pattern (in a staggered pattern), A non-fluorescent region 412A configured substantially not including a fluorescent material is provided with a screen 41A provided so as to fill the space between the fluorescent regions 411A. Here, a large number of microlenses 417a are also arranged in a staggered pattern (in a staggered pattern) in plan view corresponding to the large number of fluorescent regions 411A.

By arranging a large number of fluorescent regions 411A regularly as described above, even when the dot diameter of each fluorescent region 411A is relatively large, coloration by visible light and fluorescence are caused. A high-quality image can be displayed by uniformly generating color. In addition, by arranging a large number of fluorescent regions 411A in a staggered pattern (in a staggered pattern), the spacing between the fluorescent regions 411A can be made uniform, and the color development in the non-fluorescent region 412A can be made uniform. Therefore, even when the dot diameter of each fluorescent region 411A is relatively large, an extremely high quality image can be displayed.
In the present embodiment, a large number of fluorescent regions 411A are arranged so that one fluorescent region 411A is included in the spot of the laser light L1 on the screen 41. Thereby, it is possible to display a high-quality image while maintaining a constant ratio between the area of the region that emits light by visible light and the area that emits light by fluorescence.

<Third Embodiment>
Next, a third embodiment of the image display device of the present invention will be described.
FIG. 10 is an enlarged plan view of a screen provided in the image display apparatus according to the third embodiment of the present invention.
Hereinafter, the image display apparatus according to the third embodiment will be described focusing on the differences from the image display apparatus according to the first embodiment described above, and description of similar matters will be omitted.

As shown in FIG. 10, the image display device of the third embodiment is almost the same as the image display device 30 of the first embodiment except that the arrangement of the fluorescent region and the non-fluorescent region is different and the microlens is omitted. It is the same.
In the image display device according to the third embodiment, as shown in FIG. 10, a large number of fluorescent regions 411 </ b> B configured to include a fluorescent material are irregularly arranged in plan view, and the fluorescent material is substantially disposed. The non-fluorescent region 412B configured without being included is provided with a screen 41B provided so as to fill the space between the fluorescent regions 411B.
Thus, by providing a large number of fluorescent regions 411B in a plan view, generation of interference fringes (moire) can be prevented relatively easily and reliably, and a high-quality image can be displayed.

<Fourth embodiment>
Next, a fourth embodiment of the image display device of the present invention will be described.
FIG. 11 is an enlarged plan view of a screen provided in the image display apparatus according to the fourth embodiment of the present invention.
Hereinafter, the image display apparatus according to the fourth embodiment will be described focusing on the differences from the image display apparatus according to the first embodiment described above, and description of similar matters will be omitted.

As shown in FIG. 11, the image display device of the fourth embodiment is substantially the same as the image display device 30 of the first embodiment except that the shapes (arrangements) of the fluorescent region and the non-fluorescent region are different.
In the image display device according to the fourth embodiment, as shown in FIG. 11, in a plan view, a large number of linear fluorescent regions 411C each including a fluorescent material are parallel to each other at substantially equal intervals. And a non-fluorescent region 412C configured substantially not including a fluorescent material is provided with a screen 41C provided so as to fill the space between the fluorescent regions 411C. Here, a large number of microlenses 417a are arranged along each fluorescent region 411C in plan view.

According to such a screen 41 </ b> C, by providing the band-like fluorescent region 411 </ b> C as described above, high-quality images can be displayed by uniformly generating visible color and fluorescent color.
In particular, each band-like fluorescent region 411C is provided in parallel to the main scanning direction (X direction shown in FIG. 11). As a result, it is possible to display the high-quality image by main scanning the visible light and the excitation light while keeping the ratio of the area of the region emitting light by visible light and the area emitting light by fluorescence constant.
The width of each fluorescent region 411C having such a band shape is smaller than the spot diameters of visible light and excitation light on the screen 41C. As a result, even if the visible light and the excitation light are combined and simultaneously irradiated to the same region on the screen 41C, the fluorescent region 411C can be irradiated with the excitation light and the non-fluorescent region 412C can be irradiated with the visible light. .

<Fifth Embodiment>
Next, a fifth embodiment of the image display device of the present invention will be described.
FIG. 12 is an enlarged plan view of a screen provided in the image display apparatus according to the fifth embodiment of the present invention.
Hereinafter, the image display apparatus according to the fifth embodiment will be described focusing on the differences from the image display apparatus according to the first embodiment described above, and description of similar matters will be omitted.

As shown in FIG. 12, the image display device of the fifth embodiment is substantially the same as the image display device 30 of the first embodiment except that the shapes (arrangements) of the fluorescent region and the non-fluorescent region are different.
In the image display apparatus according to the fifth embodiment, as shown in FIG. 12, in a plan view, a large number of fluorescent regions 411D having a linear strip shape including a fluorescent material are parallel to each other at substantially equal intervals. And a non-fluorescent region 412D configured substantially not including a fluorescent material is provided with a screen 41D provided so as to fill the space between the fluorescent regions 411D. Here, a large number of microlenses 417a are arranged along each fluorescent region 411D in plan view.
In particular, each band-like fluorescent region 411D is provided so as to be parallel to the sub-scanning direction (Y direction shown in FIG. 12). As a result, a high-quality image can be displayed without requiring high accuracy in the irradiation position of the visible light and the excitation light on the screen 41D in the sub-scanning direction.

<Sixth Embodiment>
Next, a sixth embodiment of the image display device of the present invention will be described.
FIG. 13 is an enlarged plan view of a screen provided in the image display apparatus according to the sixth embodiment of the present invention.
Hereinafter, the image display apparatus according to the sixth embodiment will be described focusing on the differences from the image display apparatus according to the first embodiment described above, and description of similar matters will be omitted.

  As shown in FIG. 13, the image display apparatus according to the sixth embodiment is different from the first embodiment except that the shape (arrangement) of the fluorescent region and the non-fluorescent region is different and a lenticular lens is used instead of the microlens array. This is substantially the same as the image display device 30 of the embodiment. The image display apparatus according to the sixth embodiment is substantially the same as the image display apparatus according to the fourth embodiment except that a lenticular lens is used instead of the microlens array.

In the image display device of the sixth embodiment, as shown in FIG. 13, a lenticular lens 419 in which a large number of cylindrical lenses 419a having a linear band shape are arranged along the respective band-like fluorescent regions 411C in plan view. Is provided.
Thus, in the case where each band-like fluorescent region 411C is used, by using the cylindrical lens 419a as described above, the fluorescent region 411C can be effectively used to emit fluorescence. As a result, a high-quality image can be displayed.

The image display device of the present invention has been described based on the illustrated embodiment, but the present invention is not limited to this. For example, in the image display device of the present invention, the configuration of each unit can be replaced with an arbitrary configuration that exhibits the same function, and an arbitrary configuration can be added.
The image display device of the present invention may be a combination of any two or more configurations (features) of the above-described embodiments.

In the first to third embodiments described above, a large number of dot-like fluorescent regions are dispersed and provided so that the non-fluorescent regions are filled between the fluorescent regions. However, the dot-like non-fluorescent regions are provided. May be provided in a dispersed manner, and the fluorescent region may be provided so as to fill the space between the non-fluorescent regions.
In the above-described embodiment, red and blue are colored by the color of light from the light source, and green is colored by fluorescence to display a full-color image. Apply the present invention as long as two colors of green and blue are colored with light from the light source, and colors other than the two colors of red, green, and blue are colored with fluorescence can do.

Further, when displaying a full-color image, only three colors of red, blue, and green are used in the above-described embodiment. However, in addition to these colors, other colors such as cyan are used. A wide color image can also be displayed.
In the above-described embodiment, the display of a full-color image has been described. However, the present invention can be applied as long as an image is displayed using at least two colors.

In the above-described embodiment, the example in which the image display device of the present invention is incorporated in a slot machine has been described. However, the image display device of the present invention is incorporated in a gaming machine other than a slot machine such as a pachinko game machine. It is also possible.
The image display device of the present invention can also be used alone as a display.
In particular, it has very favorable characteristics as a display device such as a signboard.

1 is a perspective view showing an external appearance of a slot machine to which the present invention is applied as a first embodiment of an image display apparatus according to the present invention. FIG. 2 is a longitudinal sectional view for explaining an image display device provided in the slot machine shown in FIG. 1. It is a figure for demonstrating the screen with which the image display apparatus shown in FIG. 2 was equipped, Comprising: (a) is a top view of the 1st screen when the image is not displayed, (b) is (a). Sectional drawing of the 1st screen shown in (c) is a top view which shows an example of the 1st screen when the image is displayed. It is a schematic diagram which shows schematic structure of the light irradiation means with which the image display apparatus shown in FIG. 2 was equipped. It is a figure for demonstrating the optical scanning by the light irradiation means shown in FIG. It is a block diagram which shows schematic structure of the control system of the image display apparatus shown in FIG. FIG. 3 is an enlarged plan view of a screen provided in the image display device shown in FIG. 2. It is the sectional view on the AA line in FIG. It is an enlarged plan view of a screen according to a second embodiment of the present invention. It is an enlarged plan view of a screen according to a third embodiment of the present invention. It is an enlarged plan view of a screen according to a fourth embodiment of the present invention. It is an enlarged plan view of a screen according to a fifth embodiment of the present invention. It is an enlarged plan view of a screen according to a sixth embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Slot machine, 11 ... Housing | casing, 11a, 11c ... Panel surface, 11b ... Console, 12 ... Display window, 14a ... Start lever, 14b ... Bet button, 14c ... Coin slot, 16 ... Stop button, 21, 22, 23 ... Spindle reel, 25 ... Motor, 30 ... Image display device, 40 ... Screen device, 41 ... First screen, 41A-41D ... Screen, 411, 411A-411D ... Fluorescent region, 412 ... Non-fluorescent region, 412A to 412D ... non-fluorescent region, 413 ... screen body, 414 ... first light transmission layer, 415 ... fluorescence wavelength band reflector, 416 ... second light transmission layer, 417 ... micro lens array, 417a ... micro lens, 418 ... Excitation light wavelength band reflector, 419 ... Lenticular lens, 419a ... Lindal lens, 42 ... second screen, 41a ... three-dimensional part, 44 ... first lifting device, 45 ... second lifting device, 50 ... projector body, 51 ... light source device, 51r, 51v, 51b ... laser light source, 52a1, 52a2, 52a3 ... collimator lens, 52c ... mirror 52v, 52b ... dichroic mirror, 53 ... optical scanning unit, 53a, 53b ... mirror, 53d, 53e ... actuator, 55 ... driving device, 60 ... light guide optical system, 80 ... display Control device 81 ... Display control circuit 82 ... Image processing circuit 84 ... Memory device 90 ... Game control circuit A1 ... First region A2 ... Second region A3 ... Third region AX1, AX2 ... Rotating shaft EI ... facial expression, DD ... image display area, BB ... blue laser light, VV ... blue-violet laser light, RR ... Red laser light, L1, L2 ... laser light, LL ... laser light PE1, PE2, PE3 ... pixel, TR1, TR2, TR3 ... locus

Claims (21)

A screen with a fluorescent region comprising a fluorescent material;
A first light source that emits excitation light that can excite the fluorescent material, at least one second light source that emits visible light, and the first light source and the second light source according to image information, respectively. Light irradiating means comprising driving means for driving, and scanning means for scanning the light from each of the first light source and the second light source on the screen in the main scanning direction and the sub-scanning direction intersecting therewith, respectively. And
In addition to the fluorescent region, the screen includes a non-fluorescent region that is substantially free of the fluorescent material, and one of the fluorescent region and the non-fluorescent region is dispersed in a plan view. Provided, and the other region is provided so as to fill between the one region,
The visible light emitted from the second light source is projected onto the non-fluorescent region and diffused and colored, and the excitation light emitted from the first light source is projected onto the fluorescent region to produce the visible light. An image display device characterized in that a color different from that of color is generated by fluorescence and an image corresponding to the image information is displayed on the screen.   The image display device according to claim 1, wherein a large number of the fluorescent regions are provided in a dispersed manner in a plan view, and the non-fluorescent regions are provided so as to fill a space between the fluorescent regions.   The image display device according to claim 2, wherein each of the fluorescent regions has a dot shape, and the plurality of fluorescent regions are regularly arranged in a plan view.   The image display device according to claim 2, wherein each of the fluorescent regions has a dot shape, and the plurality of fluorescent regions are irregularly arranged in a plan view.   5. The image display device according to claim 3, wherein a diameter of each of the fluorescent regions forming the dot shape is smaller than a spot diameter of the visible light and the excitation light on the screen.   6. The plurality of fluorescent regions are arranged so that two or more fluorescent regions are included in at least the spot of the excitation light among the visible light and the excitation light on the screen. Image display device.   The image display according to claim 5, wherein the plurality of fluorescent regions are arranged so that one fluorescent region is included in a spot of the excitation light among the visible light and the excitation light on the screen. apparatus.   The image display apparatus according to claim 2, wherein each of the fluorescent regions has a linear strip shape, and the plurality of fluorescent regions are provided so as to be parallel to each other at substantially equal intervals.   The image display device according to claim 8, wherein each of the band-like fluorescent regions is provided so as to be parallel to the main scanning direction.   The image display device according to claim 8, wherein each of the band-like fluorescent regions is provided so as to be parallel to the sub-scanning direction.   The image display device according to any one of claims 8 to 10, wherein a width of each of the fluorescent regions forming the band shape is smaller than a spot diameter of the visible light and the excitation light on the screen.   The light irradiation means includes, as the second light source, two light sources that emit light of two colors of red, green, and blue, respectively, and the fluorescent region is excited by the second light source. The image display device according to claim 1, wherein the image display device is configured to develop a color other than the two colors of red, green, and blue when irradiated with light.   The light irradiation means includes two light sources that respectively emit red and blue light as the second light source, and the fluorescent region emits green light when irradiated with excitation light from the second light source. The image display device according to claim 12, wherein the image display device is configured to develop a color.   The light irradiation means is configured to combine the excitation light emitted from the first light source and the visible light emitted from the second light source and simultaneously irradiate the same area on the screen. The image display device according to claim 1.   An excitation light wavelength band reflector that reflects light in the wavelength band of the excitation light toward the screen is provided on the opposite side of the screen from the side irradiated with light from the light irradiation means. The image display device according to claim 1.   The screen is irradiated with light from the light irradiating means and reflects all or part of the fluorescence wavelength band while allowing the visible light and the excitation light to pass therethrough. The image display device according to claim 1, wherein a fluorescent wavelength band reflector is provided.   The microlens array which condenses the said excitation light to the said fluorescence area | region is provided in the side irradiated with the light from the said light irradiation means with respect to the said screen. Image display device.   The image display device according to claim 1, wherein the first light source is a laser light source.   The image display device according to claim 18, wherein the screen includes a portion having a three-dimensional uneven shape.   The image display device according to claim 19, wherein the screen is movable forward and backward.   The image display device according to claim 19 or 20, wherein the three-dimensional uneven shape is configured to change dynamically.

Images