JP2016212295A - Display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display that does not use a half mirror and prevents a reduction in visibility of viewers.SOLUTION: A display 100 of the present invention is a display 100 that causes viewers to visually recognize a display as a virtual image from the plurality of viewers' visual areas assumed in advance, and comprises: a first projector part that projects an image; a first intermediate screen that forms the image projected by the first projector part into an image; a second projector part that projects an image; a second intermediate screen that forms the image projected by the second projector part into an image; and a transparent glass screen 90 including a first surface 91 that performs display by reflecting the image formed by the first intermediate screen and a second surface 92 that performs display by reflecting the image formed by the second intermediate screen.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device that allows a viewer to visually recognize a display as a virtual image.

  There is known a display device in which a visual region of a viewer assumed in advance is provided on both sides via a semi-transparent body, and the viewer visually recognizes a display corresponding to each visual region as a virtual image. According to such a display device, the virtual image and the background of the virtual image can be simultaneously viewed, and the viewer can recognize the same or different information from the visual regions on both sides via the translucent body. It becomes.

As an example of such a device, in Cited Document 1 (Japanese Patent No. 3515970), there are a housing having windows facing each other, and two monitors provided facing both sides of the housing in the vertical direction. A game device is disclosed that includes a half mirror disposed to be inclined with respect to an axis connecting two monitors. In this game device, the opposite side can be seen through, and at the same time, different game screens are incident on each surface of the half mirror from the monitor arranged above and below, and each reflected light is transmitted to both sides of the housing through the window portion. It becomes the composition which is done.
Japanese Patent No. 3515970

  However, since the display device used in the conventional game device uses a half mirror, there is a problem that the visibility on the opposite side of the half mirror is not so good.

  Further, in the conventional display device, the diffusion angle of the light projected on the half mirror as the display image is not controlled, and it is difficult to efficiently increase the brightness of the virtual image while suppressing the output of the light source. There was also a problem.

  The present invention is to solve the above-described problems, and a display device according to the present invention visually displays a display as a virtual image for each viewer from a plurality of visual regions of the viewer assumed in advance. A first projector unit that projects an image, a first intermediate screen that forms an image projected by the first projector unit, and a second projector unit that projects an image , A second intermediate screen for forming an image projected by the second projector unit, a first surface for displaying by reflecting the image formed on the first intermediate screen, and the first And a transparent body having a second surface that displays an image formed by reflecting an image formed on the two intermediate screens.

  In the display device according to the present invention, the intermediate screen has two main surfaces, a micro lens array including a plurality of micro lenses is provided on one main surface, and the other main surface is a smooth surface. It is a microlens array substrate.

  Further, in the display device according to the present invention, the intermediate screen has two main surfaces, a micro lens array including a plurality of micro lenses is provided on one main surface, and the other main surface is a light diffusion surface. It is a certain microlens array / light diffusion base material.

  In the display device according to the present invention, the intermediate screen has two main surfaces, a micro lens array including a plurality of micro lenses is provided on one main surface, and the other main surface is a smooth surface. A microlens array substrate and a light diffusion substrate having two main surfaces, one of which is provided with a light diffusing surface and the other main surface of which is a smooth surface. The main surface of the material on which the microlens array is provided and the main surface of the light diffusion base material on which the light diffusion surface is provided are arranged to face each other.

  In the display device according to the present invention, the projector unit includes a laser light source that generates a laser beam and a scanning unit that scans the intermediate screen with the laser beam.

  In the display device according to the present invention, the projector unit includes a light source that generates light and an LCOS element that reflects the light to the intermediate screen.

  In the display device according to the present invention, the projector unit includes a light source that generates light and a DMD element that reflects the light to the intermediate screen.

  In the display device according to the present invention, since the half mirror is not used, the visibility of the viewer is not deteriorated.

  Further, in the display device according to the present invention, a projector unit and an intermediate screen are used. According to such a display device according to the present invention, the output of the light source can be output without using a half mirror as compared with the conventional case. It is possible to efficiently display a high-brightness virtual image while suppressing the above.

It is a figure which shows the structure of the display apparatus 100 which concerns on embodiment of this invention. 2 is a perspective view of a microlens array substrate 50 used as an intermediate screen 40. FIG. It is the figure which looked at the micro lens array 54 extended in a 1st direction and a 2nd direction from the z-axis direction. It is a figure explaining the definition of a diffusion angle. It is a figure which shows the intermediate | middle screen 40 used for the display apparatus 100 which concerns on other embodiment of this invention. It is a figure which shows the intermediate | middle screen 40 used for the display apparatus 100 which concerns on other embodiment of this invention. It is a figure which shows the intermediate | middle screen 40 used for the display apparatus 100 which concerns on other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a display apparatus 100 according to an embodiment of the present invention. Note that the drawings described below are schematic views and may differ from actual shapes, dimensions, and arrangements.

  In the following example, it is assumed that the display device 100 according to the present invention is used as a display device in a battle-type game device by players A and B as described in cited reference 1 (Japanese Patent No. 3515970). However, the usage form of the display apparatus 100 according to the present invention is not limited to this.

The display device 100 includes two projection units 85A and 85B that project an image, a first surface 91, and a transparent glass screen 90 that includes a first surface 91 and a second surface 92 that is in a front-back relationship. have. Transparent glass screen 90, the reflection of the reflective display in the first surface 91 by the projection unit 85A, to visual E _A of the viewer A, causes visually recognized as a virtual image I _A ', the second surface 92 of the projection unit 85B Display the visual E _{B of the} viewer _B
On the other hand, it is visually recognized as a virtual image I _B '. Thereby, the viewer A and the viewer B visually superimpose their virtual images on the front visual field.

  In the claims, the ordinal number “first” is assigned to the configuration related to the projection unit 85A, and the ordinal number “second” is assigned to the configuration related to the projection unit 85B. Yes.

  The projection unit 85B is the same as the projection unit 85A except that the projection unit 85A is rotated by 180 ° around a line perpendicular to the paper surface passing through O in the transparent glass screen 90. Only the configuration will be described, and the description of the projection unit 85B will be omitted. In the following description, the suffix A is not given to the projection unit 85A and each component constituting the projection unit 85A.

  The projection unit 85 includes the intermediate screen 40 and the projector unit 83.

  FIG. 1 shows an example of the structure of the projection unit 85 of the display apparatus 100 according to the embodiment of the present invention.

  The coordinates in the projection unit 85 are defined by the xyz three-dimensional orthogonal coordinates shown in FIG. For example, the light emitted from the first light source 11 is light emitted in a direction parallel to the z direction. Further, it is assumed that the optical axis of the collimator lens 35 is in a direction parallel to the y direction.

  The projection unit 10 in the projection unit 85 emits light of a projection image displayed by the display device 100. The projection unit 10 includes a first light source 11, a second light source 12, a third light source 13, a first dichroic prism 21, a second dichroic prism 22, a condenser lens 26, and the like.

  The first light source 11, the second light source 12, and the third light source 13 emit light having different wavelengths. The first light source 11 emits light of the first wavelength, and the second light source 12 emits the second light. The third wavelength light is emitted from the third light source 13. In the present embodiment, for example, the first wavelength light emitted from the first light source 11 is blue light, the second wavelength light emitted from the second light source 12 is green light, and the third light source. The light of the third wavelength emitted from 13 can be red light.

  As the first light source 11, the second light source 12, and the third light source 13, various laser devices such as a semiconductor laser device (laser light source) that emits laser light as coherent light can be used.

  In the present embodiment, the first wavelength light emitted from the first light source 11 and the second wavelength light emitted from the second light source 12 are incident on different surfaces of the first dichroic prism 21, respectively. The light of the third wavelength emitted from the third light source 13 is disposed so as to enter the second dichroic prism 22.

  In the first dichroic prism 21, the first wavelength light emitted from the first light source 11 is transmitted, and the second wavelength light emitted from the second light source 12 is reflected. Thereby, the light of the first wavelength and the light of the second wavelength are combined.

  The light having the first wavelength and the light having the second wavelength combined in this manner enter the second dichroic prism 22.

  In the second dichroic prism 22, the first wavelength light emitted from the first light source 11 and the second wavelength light emitted from the second light source 12 are transmitted, and the first light emitted from the third light source 13 is transmitted. Light of wavelength 3 is reflected. Thereby, the light of the first wavelength, the light of the second wavelength, and the light of the third wavelength are combined.

  In this way, the first wavelength light, the second wavelength light, and the third wavelength laser light combined by the second dichroic prism 22 are reflected by the projection mirror 30 via the condenser lens 26. , And enters the collimator lens 35. The projection mirror 30 has a function capable of changing the angle two-dimensionally, whereby the incident light can be scanned two-dimensionally, and a projection image by a desired laser beam is formed. The

  The projection mirror 30 further moves along a first axis (not shown) parallel to the x-axis so that the projection mirror 30 can move in the (a) direction, and a second axis (not shown) orthogonal to the first axis. ) About the direction of (b).

  The projection mirror 30 can be appropriately replaced with another optical member as long as it can scan incident light in a two-dimensional manner. As such an optical member, a galvanometer can be used. A mirror, a galvanometer scanner, a polygon mirror, a prism, an acoustooptic device, an optical device using a MEMS (Micro Electro Mechanical System) technology, or the like can be used as appropriate.

The laser light reflected by the projection mirror 30 scans the collimator lens 35 to form a projection image by the desired laser light. In the present embodiment, the point (r ₀ ) where the laser light is incident on the projection mirror 30 and reflected is set so as to exist on the optical axis of the collimator lens 35. The collimator lens 35 collimates the laser light incident from the projection mirror 30 and emits it toward the mirror 80.

The mirror 80 makes the reflected laser light enter the intermediate screen 40. A projected image by the incident laser beam is formed on the intermediate screen 40. The first surface 91 of the transparent glass screen 90, the image I _A imaged by the intermediate screen 40 is displayed by reflection. Thereby, it is possible to cause the viewer to visually recognize the display as the virtual image I _A ′ from the visual region (E _A ) of the viewer assumed in advance. The intermediate screen 40 is an optical member made of a transparent base material having a predetermined transparency or higher. The intermediate screen 40 can be configured by molding using an organic resin material, or can be configured by using an inorganic material such as glass.

  In this embodiment, the microlens array substrate 50 is used as the intermediate screen 40, but other substrates may be used. Further, as the transparent glass screen 90, other types can be used as long as they are flat transparent bodies. For example, instead of the transparent glass screen 90, a transparent synthetic resin or the like can be used.

In the present embodiment, an optical system including the collimator lens 35 and the mirror 80 is disposed between the projection mirror 30 and the intermediate screen 40. However, these are not necessarily essential components. Further, a projection optical system can be appropriately used between the intermediate screen 40 and the transparent glass screen 90.

  Here, the intermediate screen 40 used in the display apparatus 100 according to the present invention will be described in more detail. FIG. 2 is a perspective view of a microlens array substrate 50 used as the intermediate screen 40.

  The microlens array substrate 50 has a first main surface 51 and a second main surface 52, and a microlens array 54 in which a plurality of microlenses 53 are periodically arranged on the first main surface 51. And the second main surface 52 is a smooth surface 55. The microlens array substrate 50 is made of a transparent substrate.

  The direction of the axis parallel to the x-axis is defined as the first direction, and the direction of the axis parallel to the y-axis is defined as the second direction (orthogonal relationship with the first direction).

  Here, when the viewer views the transparent glass screen 90, the first direction of the intermediate screen 40 (microlens array substrate 50) is a direction in which an image that is viewed as a horizontal image by the viewer is formed. The second direction of the intermediate screen 40 (microlens array substrate 50) is a direction in which an image viewed as a vertical image by a viewer is formed.

  Under the definitions as described above, the microlens array substrate 50 that is the intermediate screen 40 has a main surface that extends in a first direction and a second direction orthogonal to the first direction.

  FIG. 3 is a view of the microlens array 54 spreading in the first direction and the second direction as seen from the z-axis direction. As shown in the figure, in the intermediate screen 40 (microlens array substrate 50) according to the present embodiment, the microlens 53 is a square having a side length d when viewed from the z-axis direction. Something is used. Note that the microlens 53 may not be square, and may be, for example, a regular hexagon. However, it is preferable that the adjacent microlenses 53 are in close contact with each other, and a smooth surface that does not form a lens does not remain in the gap between the adjacent microlenses 53. This is to reduce the linearly transmitted light.

Each microlens 53 is a spherical lens or an aspherical lens, and has a curvature with a radius of curvature R _{1 in} the first direction and a radius of curvature R _{2 in} the second direction at the apex on the first main surface 51 side. Has a curvature of. The apex means a point where each micro lens 53 protrudes most in the z-axis direction.

Then, the cross-sectional shape of the surface of each microlens 53 that is parallel to the first direction and includes the optical axis of the microlens 53 is a surface that is parallel to the second direction and includes the optical axis of the microlens 53. It is preferable to make it different from the cross-sectional shape in FIG. More specifically, the radius of curvature R ₁ of the first direction in the first principal surface 51 side apex of each microlens 53, it is also possible to equalize the radius of curvature R ₂ of the second direction, varying Is preferred.

In general, the aspect ratio of the image information displayed on the display device 100 is different, and the luminance reduction in the periphery of the image is suppressed to the same extent as the periphery of the upper and lower ends of the image and the periphery of the left and right ends of the image. to the, because each curvature of the first direction in the first principal surface 51 side apex of the microlens 53 and the radius R _1, it is better to the curvature of the second and radial R ₂ are different.

Furthermore, in general, taking into account that the image information displayed on the display device 100 is horizontally long, the curvature radius R ₁ in the first direction at the apex of each microlens 53 on the first main surface 51 side is: It is preferably smaller than the radius of curvature R _{2 in} the second direction.

  Note that a display device using a laser light source as the light source of the display device 100 has an advantage that speckle noise due to laser light is suppressed by using the microlens array 54.

  Next, when the intermediate screen 40 (microlens array substrate 50) is used for the display device 100, optical characteristics preferable as the intermediate screen 40 will be described. First, since the diffusion angle is frequently used below, this is defined.

FIG. 4 is a diagram for explaining the definition of the diffusion angle. In this specification, the maximum scattering of light emitted when light substantially parallel to the principal surface normal direction is incident from the microlens array base material 50 and the light diffusion base material 60 constituting the intermediate screen 40. The full width at half maximum (FWHM), which is the difference between the two angles that are half the light intensity I _max , is defined as the diffusion angle θ. The scattered light intensity depends on the Y value of the XYZ color system (CIE 1931 color system) and is measured by a three-dimensional variable angle spectrophotometric system (GCMS-13 type, manufactured by Murakami Color Research Laboratory Co., Ltd.). ing.

Under the above definition, the microlens array substrate 50 includes a diffusion angle θ ₁ corresponding to the horizontal direction (first direction) of display by the display device 100, and the display device 10.
It is preferable that there is a relationship of θ ₁ > θ ₂ between the diffusion angle θ ₂ corresponding to the vertical direction (second direction) of display by 0. This is because the image information displayed on the display device 100 is horizontally long.

Further, the horizontal diffusion angle θ ₁ is preferably 20 ° or more and 60 ° or less, and the vertical diffusion angle θ ₂ is preferably 5 ° or more and 35 ° or less. More preferably, the horizontal diffusion angle θ ₁ is 20 ° or more and 50 °.
When the vertical diffusion angle θ ₂ is 10 ° or more and 30 ° or less, the display device 1
The intermediate screen 40 used for 00 is optimal. This is to realize a high-brightness virtual image display efficiently while suppressing the output of the light source while keeping the brightness of the peripheral portion of the image uniform for a viewer who faces the virtual image. The above range is optimal when the processing accuracy of the array and the design freedom of the virtual image size are allowed.

  Next, the material of the base material that becomes the base of the intermediate screen 40 will be described. The base material used as the base of the intermediate screen 40 may be any transparent material, such as thermoplastic resin, thermosetting resin, UV curable resin, electron beam curable resin, or glass. Can be used.

  If a thermoplastic resin is used as the base material of the intermediate screen 40, for example, polycarbonate resin, acrylic resin, fluorine acrylic resin, silicone acrylic resin, epoxy acrylate resin, polystyrene resin, cycloolefin Examples thereof include polymers, methylstyrene resins, fluorene resins, PET, and polypropylene.

  Further, the intermediate screen 40 is not necessarily formed from one base base material. For example, in the case of the microlens array substrate 50, the microlens array 54 and the like and the substrate-like member may be configured as separate members, and these may be bonded together with an adhesive or the like. However, in this case, it is preferable that all members have the same refractive index.

  In the display device 100 according to the present invention as described above, since the half mirror is not used, the visibility of the viewer is not deteriorated.

Moreover, in the display apparatus 100 according to the present invention, the projector unit and the intermediate screen 40 are used. According to the display apparatus 100 according to the present invention, a virtual image having a higher luminance than that of the related art is displayed. It becomes possible. Such an effect of the present invention is largely due to the fact that the diffusion angle of the intermediate screen 40 is controlled.

  In the above embodiment, the laser scanning method including the projection unit 10 and the projection mirror 30 has been described as the drawing method of the display apparatus 100 based on an example in which the display unit 100 is applied. The display unit 100 employs an LCOS method using a light source and an LCOS (Liquid crystal on silicon) element as a drawing method, or a DLP (Digital Digital Device) using a light source and a DMD (Digital Mirror Device) element. The present invention can also be applied to those adopting the Light Processing method. Examples of the light source include a halogen lamp, a metal halide lamp, an ultrahigh pressure mercury lamp, an LED, and a semiconductor laser.

  In the case of the LCOS method, the light from the light source is selectively reflected by the LCOS element, which is a reflective liquid crystal element, with respect to the intermediate screen 40, and in the case of the DLP method. Realizes the display apparatus 100 by selectively reflecting the light from the light source with respect to the intermediate screen 40 by the DMD element which is a reflective element in which a plurality of micromirrors are arranged. Can do.

  Next, another embodiment of the present invention will be described. Since the display device 100 according to another embodiment of the present invention is different from the display device 100 according to the previous embodiment in the intermediate screen 40 used, the difference of the intermediate screen 40 will be described.

  FIG. 5 is a view showing an intermediate screen 40 used in the display apparatus 100 according to another embodiment of the present invention. In the present embodiment, a microlens array / light diffusion base material 70 is used as the intermediate screen 40. In addition, the arrow in a figure has shown the light into which the light from the mirror 80 injects.

  The microlens array / light diffusing substrate 70 has a first main surface 71 and a second main surface 72, and a plurality of microlenses 73 are periodically arranged on the first main surface 71. A lens array 74 is provided, and the second main surface 72 is a light diffusion surface 75. The microlens array substrate 70 is made of a transparent substrate.

  The light diffusing surface 75 is composed of fine irregularities having a random cycle. Such a light diffusion surface 75 is configured by providing fine scratches on a smooth surface, for example, like ground glass. In order to configure the light diffusion surface 75, blasting such as sand blasting or bead blasting is suitable.

  Even when the microlens array / light diffusion base material 70 as described above is used, the same effects as those of the previous embodiment can be obtained.

  Next, another embodiment of the present invention will be described. The display device 100 according to another embodiment of the present invention is also different from the display device 100 according to the previous embodiment because the intermediate screen 40 used is different from the display device 100 according to the previous embodiment.

  6 and 7 are views showing an intermediate screen 40 used in the display apparatus 100 according to another embodiment of the present invention. In the present embodiment, two sheets of the microlens array substrate 50 and the light diffusion substrate 60 described so far are used as the intermediate screen 40. In addition, the arrow in a figure has shown the direction in which the light from the mirror 80 injects.

  The light diffusing substrate 60 has a first main surface 61 and a second main surface 62, a light diffusing surface 64 is provided on the first main surface 61, and the second main surface 62 is a smooth surface 65.

  The light diffusing surface 64 is composed of fine irregularities having a random period. Such a light diffusing surface 64 is configured by providing fine scratches on a smooth surface like ground glass, for example. In order to configure the light diffusion surface 64, blasting such as sand blasting or bead blasting is suitable.

  In the intermediate screen 40 according to the present invention, the first main surface 51 provided with the microlens array 54 of the microlens array substrate 50 and the first main surface provided with the light diffusion surface 64 of the light diffusion substrate 60. 61 are arranged opposite to each other. Further, the facing distance between the microlens array substrate 50 and the light diffusion substrate 60 is preferably 0 μm or more and 100 μm or less.

  The surface on which the light from the mirror 80 is incident may be the smooth surface 55 side of the microlens array substrate 50 as shown in FIG. 6, or the smooth surface 65 of the light diffusion substrate 60 as shown in FIG. Good. However, the former layout can make the brightness of the virtual image more uniform.

  Note that the above-described distance between the opposing surface is the top where the microlens array 54 protrudes most from the main surface of the microlens array substrate 50 and the top where the light diffusion surface 64 protrudes most from the main surface of the light diffusion substrate 60. The interval between.

  In the present embodiment, since an image is formed by the microlens array base material 50 and the light diffusion base material 60 as the intermediate screen 40, light is more effectively used than when a simple screen is used to form an image. Can be transmitted, and the luminance can be increased. In addition, since sufficient luminance can be obtained with a small amount of light, it is possible to save power by suppressing the output of each laser light source and the like.

In addition, as the light-diffusion base material 60, it is preferable that diffusion angle (theta) _D is 5 degrees or more and 6 degrees or less.
When the microlens array substrate 50 and the light diffusion substrate 60 are used in combination like the intermediate screen 40 according to the present embodiment, the anisotropic diffusion property (horizontal direction and vertical direction) of the microlens array substrate 50 is used. It is desirable to combine with a light diffusing substrate 60 having a small diffusion angle (in combination with a light diffusing substrate having a large diffusion angle), in order to maintain a property that the diffusion profile is different). Because the nature of becomes dominant and approaches the isotropic diffusion as a whole). However, since the rainbow pattern caused by diffracted light does not disappear when the diffusion angle of the light diffusion base material 60 is 5 ° or less, in the present invention, the diffusion base material 60 has a diffusion angle θ _D of 5 ° or more and 6 ° or less. The thing is adopted.

  Even when the intermediate screen 40 including the microlens array substrate 50 and the light diffusion substrate 60 as described above is used, the same effects as those of the previous embodiment can be obtained.

  As described above, in the display device according to the present invention, since the half mirror is not used, the visibility of the viewer is not deteriorated.

  Further, in the display device according to the present invention, a projector unit and an intermediate screen are used. According to such a display device according to the present invention, the output of the light source can be output without using a half mirror as compared with the conventional case. It is possible to efficiently display a high-brightness virtual image while suppressing the above.

DESCRIPTION OF SYMBOLS 10 ... Projection part 11 ... 1st light source 12 ... 2nd light source 13 ... 3rd light source 21 ... 1st dichroic prism 22 ... 2nd dichroic prism 26 ... condensing lens 30 ... Projection mirror (scanning section)
35 ... Collimator lens 40 ... Intermediate screen 50 ... Micro lens array substrate 51 ... First main surface 52 ... Second main surface 53 ... Micro lens 54 ... Micro lens array 55 ... smooth surface 60 ... light diffusion base material 61 ... first main surface 62 ... second main surface 64 ... light diffusion surface 65 ... smooth surface 70 ... micro lens array / Light diffusing substrate 71 ... first main surface 72 ... second main surface 73 ... micro lens 74 ... micro lens array 75 ... light diffusing surface 80 ... mirror 83 ... Projector unit 85A, 85B ... projection unit 90 ... transparent glass screen (transparent body)
91 ... first surface 92 ... second surface 100 ... display device

Claims (7)

A display device that causes each viewer to visually recognize a display as a virtual image from a plurality of visual regions of a predetermined viewer,
A first projector unit for projecting an image;
A first intermediate screen for forming an image projected by the first projector unit;
A second projector unit for projecting an image;
A second intermediate screen for forming an image projected by the second projector unit;
A first surface that displays by reflecting an image formed on the first intermediate screen; a second surface that displays by reflecting an image formed on the second intermediate screen; And a transparent body having a display. The intermediate screen is
2. A microlens array substrate having two main surfaces, wherein a microlens array comprising a plurality of microlenses is provided on one main surface, and the other main surface is a smooth surface. A display device according to 1. The intermediate screen is
A microlens array / light diffusing substrate having two main surfaces, a microlens array comprising a plurality of microlenses on one main surface and the other main surface being a light diffusion surface The display device according to claim 1. The intermediate screen is
A microlens array substrate having two main surfaces, a microlens array comprising a plurality of microlenses on one main surface, and the other main surface being a smooth surface;
A light diffusing substrate having two main surfaces, wherein one main surface is provided with a light diffusion surface, and the other main surface is a smooth surface;
Consists of
The main surface of the microlens array substrate on which the microlens array is provided and the main surface of the light diffusion substrate on which the light diffusion surface is provided are arranged to face each other. A display device according to 1. The projector unit is
A laser light source for generating laser light;
The display device according to claim 1, further comprising: a scanning unit configured to scan the intermediate screen with the laser light. The projector unit is
A light source that generates light;
The display device according to claim 1, further comprising an LCOS element that reflects the light to the intermediate screen. The projector unit is
A light source that generates light;
The display device according to claim 1, further comprising: a DMD element that reflects the light to the intermediate screen.

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