JP2012220668A - Transmission type screen and rear projection type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission type screen for realizing a picture display, having achieved both a wide view angle and high contrast, and provide a rear projection type display device.SOLUTION: A transmission type screen 10 includes: a phosphor layer 2 containing phosphors 2R, 2G, and 2B to emit light by being excited by an excited light UV; a first selective reflection layer 3 provided on the opposite side to an incident side of the excited light UV for the phosphor layer 2 so as to allow the excited light UV to reflect and allow visible light R, G, and B emitted by the phosphor layer 2 to transmit; and a photosensitive layer 5 provided between the phosphor layer 2 and the first selective reflection layer 3 and containing a photochromic compound which transits from a state of absorbing the visible light to a state of transmitting the visible light by the irradiation of any one of the excited light UV and the visible light R, G, and B emitted from the phosphor layer 2.

Description

  The present invention relates to a transmissive screen and a rear projection display device.

  A rear projection display device (rear projector) projects image light modulated in accordance with a video signal onto a screen from a video projection unit disposed on the back side of a transmissive screen when viewed from the viewer, It is a display device that displays an image.

  For rear projectors that require high-contrast image display, proposals have been made to improve contrast using a photochromic compound that changes color when irradiated with light of a specific wavelength.

  For example, Patent Document 1 discloses a transmissive image projection for rear projection televisions that includes a material (photochromic compound) that changes at least one of reflectance, transmittance, and absorption rate of visible light when invisible light is projected. A screen is disclosed. When this screen is irradiated with ultraviolet light that is invisible light, the reflectance of the photochromic compound, which is a transparent material, with respect to visible light decreases and the absorption rate increases in the irradiated region. That is, the photochromic compound is colored black in the region irradiated with ultraviolet light. Therefore, by irradiating ultraviolet light to the portion corresponding to the dark portion of the image, the screen can be colored black and the contrast can be improved.

International Publication No. 2007/108387

  However, in the above-described transmissive image projection screen, the three primary colors (RGB) of visible light are used as the image light, and the RGB light is projected on the back side of the screen and transmitted and diffused, so that the image is displayed. Is formed. Therefore, depending on the position of the observer with respect to the screen, there may be a problem that the image looks dark or the hue changes. That is, in the above-mentioned screen, even if the contrast can be improved by using the photochromic compound, the problem of viewing angle dependency still exists.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a transmissive screen and a rear projection type display device that realize image display with both a wide viewing angle and high contrast.

  In order to achieve the above-described object, the transmission screen of the present invention includes a phosphor layer including a phosphor that emits light when excited by excitation light, and a phosphor layer on the side opposite to the incident side of the excitation light. A first selective reflection layer that reflects or absorbs excitation light and transmits visible light emitted from the phosphor layer; and is provided between the phosphor layer and the first selective reflection layer, And a photosensitive layer containing a photochromic compound that transitions from a state of absorbing visible light to a state of transmitting visible light by irradiation with any one of visible light emitted from the phosphor layer.

  The rear projection display device of the present invention includes the above-described transmission screen and a video projection unit that projects excitation light modulated according to an image signal onto the transmission screen.

  As described above, according to the present invention, it is possible to provide a transmissive screen and a rear projection display device that can realize image display with both a wide viewing angle and high contrast.

It is a schematic sectional drawing of the transmission type screen in the 1st Embodiment of this invention. It is a schematic plan view of the phosphor layer of the transmission screen shown in FIG. It is the schematic which shows the structure of the rear projection type display apparatus provided with the transmission type screen of this invention. It is a schematic sectional drawing of the transmission type screen in the 2nd Embodiment of this invention. It is a schematic sectional drawing of the transmission type screen in the 3rd Embodiment of this invention. It is a schematic sectional drawing of the transmission type screen in the 4th Embodiment of this invention. It is a schematic sectional drawing of the transmission type screen in the 5th Embodiment of this invention. It is a schematic sectional drawing of the transmission type screen in the 6th Embodiment of this invention. It is a schematic sectional drawing of the transmissive screen in the 7th Embodiment of this invention. It is a schematic sectional drawing of the transmissive screen in the 8th Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  The transmission screen of the present invention is a screen that forms part of a rear projection display device (rear projector) and displays an image by projecting image light (excitation light) from the back side of the screen as viewed from an observer. is there. Hereinafter, in the present specification, the transmission screen of the present invention will be described with the surface on the side where the excitation light is incident as the “rear surface” and the surface on the image display side as the “front surface”.

(First embodiment)
FIG. 1 is a schematic cross-sectional view showing the configuration of a transmissive screen according to the first embodiment of the present invention.

  The transmission screen 10 of the present embodiment has a phosphor layer 2. The phosphor layer 2 includes a phosphor that emits light when excited by the excitation light projected from the video projection unit 100, and includes a red phosphor 2R that emits red light R, and a green phosphor 2G that emits green light G. And a blue phosphor 2B that emits blue light B. In the present embodiment, laser light in the ultraviolet region (ultraviolet light) is used as excitation light for exciting the phosphors 2R, 2G, and 2B.

  FIG. 2 is a schematic plan view of the phosphor layer 2 used in the transmission screen 10 of the present embodiment. As can be seen from FIG. 2, the phosphors 2R, 2G, and 2B are alternately arranged in stripes, and black stripes 2K made of carbon black or the like are provided between them. The black stripe 2K has a function of improving color contrast by improving visible contrast and absorbing visible light from adjacent phosphors.

  The phosphor layer 2 may be configured such that a red phosphor, a green phosphor, and a blue phosphor are arranged in a matrix, and a black matrix is provided therebetween.

  Referring to FIG. 1 again, first and second selective reflection layers 3 and 4 are provided on the front side and the back side across the phosphor layer 2, respectively. The first selective reflection layer 3 is provided on the front side of the phosphor layer 2, that is, on the side opposite to the incident side of the ultraviolet light UV that is excitation light with respect to the phosphor layer 2, and the second selective reflection layer 4. Are provided on the back side of the phosphor layer 2, that is, on the incident side of the ultraviolet light UV with respect to the phosphor layer 2.

  The first selective reflection layer 3 on the front side of the phosphor layer 2 is made of a dielectric multilayer film mirror, reflects the ultraviolet light (excitation light) UV projected from the video projection unit 100, and the phosphor layer 2 It is configured to transmit emitted light. Thereby, even if the ultraviolet light which excited the fluorescent substance layer 2 permeate | transmitted the fluorescent substance layer 2, it can prevent such an ultraviolet light reaching the observer of the screen 10 front side. Further, by reflecting the ultraviolet light included in the external light, it is possible to prevent the phosphors 2R, 2G, and 2B from being excited by such ultraviolet light and emitting light.

  Like the first selective reflection layer 3, the second selective reflection layer 4 on the back side of the phosphor layer 2 is composed of a dielectric multilayer mirror, but unlike the first selective reflection layer 3, ultraviolet light is used. While transmitting UV, the light emitted from the phosphor layer 2 is reflected. Thereby, out of the isotropic light emission from the phosphor layer 2, the light radiated to the back side of the screen 10 can be extracted to the front side, and the light use efficiency can be improved.

  The first selective reflection layer 3 may be composed of a color filter instead of the dielectric multilayer mirror. In that case, the color filter needs to be configured to transmit visible light (red light, green light, and blue light) and absorb ultraviolet light (excitation light).

  Furthermore, between the phosphor layer 2 and the first selective reflection layer 3, there is provided a photosensitive layer 5 containing a photochromic compound whose light transmittance is changed by irradiation with light of a specific wavelength. The photochromic compound used in the present embodiment is normally black or brown and absorbs visible light, but transmits visible light having a specific wavelength when irradiated with visible light having a specific wavelength. That is, in the photosensitive layer 5, which is usually black or brown, when visible light having a specific wavelength is irradiated, only the irradiated region appears to be colored in the visible light color. As a result, the light of the three primary colors (RGB) emitted from the phosphor layer 2 is transmitted through the photosensitive layer 5 so that the contrast can be improved. In addition, the photochromic compound is colored in the original black or brown color by heating or irradiation with light other than ultraviolet light that is excitation light and light other than visible light emitted from the phosphor, for example, infrared light IR. . Along with this, the phosphor layer 2 can transmit infrared light IR acting on the photosensitive layer 5.

  As a photochromic compound, what can exhibit the above-mentioned function can be selected suitably, for example, a silver nanoparticle-titanium oxide composite film can be used.

  Each layer 2-5 described above is supported by a base member 6 made of glass or the like. Further, on the front side of the first selective reflection layer 3, in order to prevent the phosphors 2 R, 2 G, 2 B of the phosphor layer 2 and the photochromic compound of the photosensitive layer 5 from being deteriorated and damaged, glass, polyethylene A protective layer 7 made of tarate (PET) or the like is provided.

  Here, the image display operation of the transmissive screen 10 of the present embodiment will be described.

  The ultraviolet light UV emitted from the image projection unit 100 is incident on the transmission screen 10 from the back side, and is transmitted through the base substrate 6 and the second selective reflection layer 4. The ultraviolet light UV transmitted through the second selective reflection layer 4 enters the phosphor layer 2 and excites the phosphors 2R, 2G, and 2B. The RGB light emitted from each of the phosphors 2R, 2G, and 2B excited by the ultraviolet light UV is combined with the light reflected by the second selective reflection layer 4 on the back side, and the photosensitive layer located on the front side. 5 is incident.

  The photochromic compound of the photosensitive layer 5 selectively transmits RGB light incident from the phosphor layer 2. That is, the photosensitive layer 5 transmits red light R when irradiated with red light R, transmits green light G when irradiated with green light G, and transmits blue light B when irradiated with blue light B. Let The RGB light transmitted through the photosensitive layer 5 passes through the first selective reflection layer 3 and the protective layer 7 and is displayed on the screen 10 as a color image.

  As described above, in the transmissive screen of this embodiment, the photosensitive layer containing the photochromic compound is provided on the front side of the phosphor layer. This photochromic compound is usually black or brown and absorbs visible light, but when visible light with a specific wavelength is irradiated, the visible light is transmitted, that is, a region irradiated with visible light with a specific wavelength. Appears to be colored in that color. Thereby, the contrast of the RGB image displayed on the screen can be improved. As a result, in the transmissive screen of this embodiment, an isotropic phosphor is used as the light emitter, so that not only a wide viewing angle image can be displayed, but also a high contrast image display. Is also possible.

  The phosphor layer and the photosensitive layer are provided as separate layers in the present embodiment, but may be formed integrally, or the phosphor layer may be formed so as to include the photochromic compound of the present embodiment, etc. You may be provided as one layer provided with the function of each layer.

  Next, the configuration and operation of a rear projector, which is a rear projection display device including the transmission screen of the present embodiment, will be described. Hereinafter, as a rear projector provided with the transmissive screen of the present embodiment, a scanning projector will be described as an example, but the present invention is not limited to this.

  FIG. 3 shows a configuration example of the rear projector of the present embodiment. Referring to FIG. 3, the rear projector 1 includes a transmissive screen 10 and a video projection unit 100 that projects excitation light (ultraviolet laser beam in the present embodiment) based on the video signal onto the screen 10. is doing. The video projection unit 100 includes a laser light source driving unit 251, a scanning element driving unit 252, a laser light source 253, an optical system 254, a horizontal scanning element 255, and a vertical scanning element 256.

  The laser light source 253 outputs laser light (excitation light) in the ultraviolet region for exciting the phosphors 2R, 2G, 2B (see FIG. 2) of each color of the phosphor layer 2 included in the screen 10.

  The optical system 254 is provided in the traveling direction of the laser light output from the laser light source 253 and reflects the incident laser light toward the horizontal scanning element 255. The horizontal scanning element 255 includes a resonant scanning mirror represented by, for example, a MEMS (Micro Electro Mechanical Systems) mirror, and reciprocally scans the laser light from the optical system 254 in the horizontal direction.

  The vertical scanning element 256 is provided in the traveling direction of the laser light from the horizontal scanning element 255, and reciprocally scans the laser light from the horizontal scanning element 255 in the vertical direction. The vertical scanning element 256 may be configured by scanning means such as a polygon mirror or a galvanometer mirror.

  The laser light source driving unit 251 drives the laser light source 253 according to the luminance value of each pixel of the image based on the video signal supplied from the outside. The scanning element driving unit 252 drives the horizontal scanning element 255 and the vertical scanning element 256 according to a synchronization signal (horizontal synchronization signal or vertical synchronization signal) of a video signal supplied from the outside.

(Second Embodiment)
FIG. 4 is a schematic cross-sectional view of a transmissive screen according to the second embodiment of the present invention. In the following embodiments including this embodiment, the same members as those in the first embodiment are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

  The present embodiment is a modification in which the configuration of the photosensitive layer is changed with respect to the first embodiment. That is, the photosensitive layer 15 is provided with similar black stripes 15K corresponding to the black stripes 2K provided on the phosphor layer 2. Thereby, the spatial spread of the spectrum of the light emitted from the photosensitive layer 5 can be reduced, and not only the contrast but also the color purity can be further improved. Other configurations are the same as those of the first embodiment, and the obtained effects are the same as those of the first embodiment.

(Third embodiment)
FIG. 5 is a schematic sectional view of a transmission screen according to the third embodiment of the present invention.

  This embodiment is a modification in which the configurations of the photosensitive layer and the first selective reflection layer are changed with respect to the first embodiment.

  The photochromic compound used in the photosensitive layer 25 of the present embodiment is normally black or brown and absorbs visible light, but transmits light in the entire visible region by irradiation with ultraviolet light UV that is excitation light of the phosphor layer 2. It is supposed to let you. That is, the photosensitive layer 25, which is usually black or brown, becomes transparent when irradiated with ultraviolet light UV. Further, as in the first embodiment, the photochromic compound is heated to an original black or brown color by irradiation with light other than ultraviolet light that is excitation light and light other than visible light emitted by a phosphor, for example, infrared light IR. It has come to be colored. With such a change in the configuration of the photosensitive layer 25, the phosphor layer 2 of the present embodiment can transmit light acting on the photosensitive layer 25, that is, ultraviolet light UV and infrared light IR. The photosensitive layer 25 is also provided with a black stripe 25K similar to that of the second embodiment.

  In addition to this, the first selective reflection layer 13 reflects the ultraviolet light UV, and the RGB light emitted from the phosphor layer 2 and transmitted through the photosensitive layer 15 made transparent by the irradiation of the ultraviolet light UV. It is configured to selectively transmit. That is, the first selective reflection layer 13 includes a red transmission layer 13R that transmits only red light R, a green transmission layer 13G that transmits only green light G, and a blue transmission layer 13B that transmits only blue light B. Have. The red transmissive layer 13R, the green transmissive layer 13G, and the blue transmissive layer 13B are provided so as to correspond to the respective phosphors 2R, 2G, and 2B of the phosphor layer 2, and are alternately arranged in stripes in the present embodiment. Has been placed.

  With such a configuration of the photosensitive layer 15 and the first selective reflection layer 13, the contrast and the color purity can be further improved in this embodiment.

(Fourth embodiment)
FIG. 6 is a schematic cross-sectional view of a transmission screen according to the fourth embodiment of the present invention.

  The present embodiment is a modification in which the configuration of the photosensitive layer is changed with respect to the first embodiment.

  The photosensitive layer 35 of the present embodiment is configured to selectively transmit RGB light emitted from the phosphor layer 2 by irradiation with ultraviolet light UV that is excitation light of the phosphor layer 2. Specifically, the photosensitive layer 35 includes a red photosensitive layer 35R, a green photosensitive layer 35G, and a blue photosensitive layer 35B that are disposed between the black stripes 35K as in the second embodiment. The red photosensitive layer 35R, the green photosensitive layer 35G, and the blue photosensitive layer 35B are provided so as to correspond to the phosphors 2R, 2G, and 2B of the phosphor layer 2 on the back side, and are alternately arranged in stripes in this embodiment. Is arranged.

  The photochromic compound contained in each of the red photosensitive layer 35R, the green photosensitive layer 35G, and the blue photosensitive layer 35B is normally black or brown and absorbs visible light. However, irradiation with ultraviolet light UV causes red light R and green light, respectively. The light G and the blue light B are transmitted. Therefore, for example, the red photosensitive layer 35R, which is usually black or brown, is colored in the color (red) of light emitted from the red phosphor 2R when irradiated with the ultraviolet light UV that excites the red phosphor 2R. It becomes visible. In this way, the photosensitive layer 35 of the present embodiment can have both the functions of the photosensitive layer of the third embodiment and the first selective reflection layer.

  In the present embodiment, each photochromic compound of the photosensitive layer 35 is colored in black or brown, as in the first embodiment, except for heating, ultraviolet light that is excitation light, and visible light emitted by a phosphor. Irradiation with other light, for example, infrared light IR. Therefore, the phosphor layer 2 can transmit light acting on the photosensitive layer 35, that is, the ultraviolet light UV and the infrared light IR, as in the third embodiment.

(Fifth embodiment)
FIG. 7 is a schematic cross-sectional view of a transmission screen according to the fifth embodiment of the present invention.

  This embodiment is a modification in which the configuration of the phosphor layer and the configuration of the photosensitive layer associated therewith are changed with respect to the first embodiment. Furthermore, according to this change, the excitation light projected from the video projection unit is also different from that of the first embodiment.

  The phosphor layer 12 of the present embodiment includes a red phosphor 12R that emits red light R, a green phosphor 12G that emits green light G, and a diffusion material 12B that diffuses blue light B. In the present embodiment, laser light (blue light) B in the blue wavelength region is used as excitation light for exciting the red phosphor 12R and the green phosphor 12G. Therefore, the light emitted from the phosphor layer 12 is RGB light as in the first embodiment.

  The red phosphor 12R, the green phosphor 12G, and the diffusing material 12B are alternately arranged in a stripe shape, and a black stripe 12K that absorbs visible light is provided between them, as in the first embodiment. ing. The red phosphor 12R, the green phosphor 12G, and the diffusing material 12B may be arranged in a matrix, and a black matrix may be provided between them.

  The photochromic compound used in the photosensitive layer 45 of the present embodiment is the same as that of the first embodiment in that visible light having a specific wavelength is transmitted by irradiation with visible light having a specific wavelength. That is, the photosensitive layer 45 of this embodiment is normally black or brown, but only the region irradiated with visible light of a specific wavelength appears to be colored in the visible light color. Further, the point that the colored photochromic compound is colored to the original black or brown color by heating is the same as in the first embodiment. However, unlike the first embodiment, the photochromic compound of the present embodiment is changed to the original black or brown color by irradiation with light other than the blue light that is the excitation light and light other than the visible light emitted by the phosphor, for example, ultraviolet light UV. It comes to be colored. Accordingly, the phosphor layer 12 can transmit the ultraviolet light UV acting on the photosensitive layer 45.

  Other configurations are the same as those of the first embodiment, and the obtained effects are the same as those of the first embodiment.

(Sixth embodiment)
FIG. 8 is a schematic cross-sectional view of a transmission screen according to the sixth embodiment of the present invention.

  The present embodiment is a modification in which the configuration of the photosensitive layer is changed with respect to the fifth embodiment. That is, the photosensitive layer 55 of the present embodiment is provided with the same black stripe 55K corresponding to the black stripe 12K provided on the phosphor layer 12. Such a configuration is the same as that of the second embodiment. Thereby, the spatial spread of the light emitted from the photosensitive layer 55 can be reduced, and not only the contrast but also the color purity can be further improved. Other configurations are the same as those of the fifth embodiment, and the obtained effects are the same as those of the fifth embodiment.

(Seventh embodiment)
FIG. 9 is a schematic cross-sectional view of a transmission screen in the seventh embodiment of the present invention.

  This embodiment is a modification in which the configurations of the photosensitive layer and the first selective reflection layer are changed with respect to the fifth embodiment. As the first selective reflection layer, the first selective reflection layer 13 of the third embodiment is used.

  The photochromic compound used in the photosensitive layer 65 of the present embodiment is normally black or brown and absorbs visible light, but transmits light in the entire visible region by irradiation with blue light B that is excitation light of the phosphor layer 12. So that it is transparent. Such a configuration is the same as that of the third embodiment. On the other hand, as in the fifth embodiment, the photochromic compound is heated to an original black or brown color by irradiation with light other than blue light that is excitation light and light other than visible light emitted by a phosphor, for example, infrared light IR. It is comprised so that it may be colored. According to such a configuration, the phosphor layer 12 can transmit light acting on the photosensitive layer 65, that is, blue light B and ultraviolet light UV. The photosensitive layer 65 is also provided with a black stripe 65K, as in some embodiments.

  With this configuration of the photosensitive layer 65 and the first selective reflection layer 13 similar to that of the third embodiment, contrast and color purity can be further improved in this embodiment.

(Eighth embodiment)
FIG. 10 is a schematic cross-sectional view of a transmission screen according to the second embodiment of the present invention.

  The present embodiment is a modification in which the configuration of the photosensitive layer is changed with respect to the fifth embodiment.

  The photosensitive layer 75 of the present embodiment is configured to selectively transmit RGB light emitted from the phosphor layer 12 by irradiation with blue light B that is excitation light of the phosphor layer 12. Specifically, the photosensitive layer 75 has a red photosensitive layer 75R, a green photosensitive layer 75G, and a blue photosensitive layer 75B disposed between the black stripes 75K similar to that of the sixth embodiment. The red photosensitive layer 75R, the green photosensitive layer 75G, and the blue photosensitive layer 75B are provided so as to correspond to the red phosphor 12R and the green phosphor 12G of the phosphor layer 12 on the back side and the diffusing material 12B. In the form, they are alternately arranged in stripes.

  The photochromic compound contained in each of the red photosensitive layer 75R, the green photosensitive layer 75G, and the blue photosensitive layer 75B is normally black or brown and absorbs visible light. The light G and the blue light B are transmitted. Therefore, for example, the red photosensitive layer 75R, which is usually black or brown, is colored in the color (red) of the light emitted from the red phosphor 12R when irradiated with blue light that excites the red phosphor 12R. Become visible. In this way, the photosensitive layer 75 of the present embodiment can have both functions of the photosensitive layer of the seventh embodiment and the first selective reflection layer. The configuration of the photosensitive layer 75 is the same as that of the photosensitive layer 35 of the fourth embodiment.

  In the present embodiment, each photochromic compound of the photosensitive layer 75 is colored in the original black or brown color in the same manner as in the fifth embodiment except for heating and other than blue light that is excitation light and visible light emitted by a phosphor. Irradiation with other light, such as ultraviolet light UV. Accordingly, the phosphor layer 12 can transmit light acting on the photosensitive layer 75, that is, the blue light B and the ultraviolet light UV, as in the seventh embodiment.

  In the fifth to eighth embodiments described above, blue light is used as excitation light for the phosphor layer. However, the present invention is not limited to this, and the excitation light may be red light, green light, and blue light. Any one of the color lights may be used. In this case, the phosphor layer is composed of a diffusing material that diffuses one color light that is excitation light, and two phosphors that emit two color lights other than the excitation light, respectively.

DESCRIPTION OF SYMBOLS 1 Rear projector 10 Transmission type screen 2,12 Phosphor layer 3,13 1st selective reflection layer 4 2nd selective reflection layer 5,15,25,35,45,55,65,75 Photosensitive layer 6 Base member 7 Protective layer

Claims (26)

A phosphor layer containing a phosphor that emits light when excited by excitation light; and
A first selective reflection layer that is provided on the opposite side to the excitation light incident side with respect to the phosphor layer, reflects or absorbs the excitation light, and transmits visible light emitted from the phosphor layer;
Visible light is provided between the phosphor layer and the first selective reflection layer, and absorbs visible light by irradiating one of the excitation light and visible light emitted from the phosphor layer. A photosensitive layer containing a photochromic compound that transitions to a transparent state;
A transmission type screen.   The photochromic compound is adapted to transition from a state of transmitting visible light to a state of absorbing visible light by irradiation of light other than the excitation light and light other than visible light emitted from the phosphor layer. Item 2. The transmission screen according to Item 1.   The said photochromic compound is made to permeate | transmit the visible light of the said specific wavelength in the state which permeate | transmits the said visible light by the irradiation of the visible light of the specific wavelength which the said fluorescent substance layer emits. Transmission screen.   The transmissive screen according to claim 2, wherein the photochromic compound is configured to transmit light in the entire visible region in a state where the visible light is transmitted by irradiation of the excitation light.   The transmissive screen according to claim 4, wherein the first selective reflection layer is configured to selectively transmit visible light having a different wavelength that is emitted from the phosphor layer and transmitted through the photosensitive layer.   The photosensitive layer includes a plurality of the photochromic compounds, and each of the photochromic compounds transmits visible light when irradiated with the excitation light, and visible light having different wavelengths emitted from the phosphor layer. The transmissive screen according to claim 2, wherein the transmissive screen is configured to transmit light.   The excitation light is ultraviolet light, and the phosphor layer includes a red phosphor that emits red light, a green phosphor that emits green light, and a blue phosphor that emits blue light. The transmission screen according to any one of the above.   The transmission screen according to claim 7, wherein the red phosphor, the green phosphor, and the blue phosphor are alternately arranged in a stripe shape.   The transmissive screen according to claim 7, wherein the red phosphor, the green phosphor, and the blue phosphor are arranged in a matrix.   The said fluorescent substance layer is provided between the said red fluorescent substance, the said green fluorescent substance, and the said blue fluorescent substance, and has a black stripe which absorbs visible light of any one of Claim 7 to 9 Transmission screen.   The transmissive screen according to claim 10, wherein the photosensitive layer is provided so as to correspond to the black stripe of the phosphor layer and has a black stripe similar to the black stripe.   The transmissive screen according to any one of claims 7 to 11, wherein light other than the excitation light and light other than visible light emitted from the phosphor layer is infrared light.   The excitation light is any one color light of red light, green light, and blue light, and the phosphor layer emits a diffusing material that diffuses any one color light and the remaining two color lights, respectively. The transmissive screen according to claim 3, comprising two phosphors.   The transmissive screen according to claim 13, wherein the two phosphors and the diffusing material are alternately arranged in a stripe shape.   The transmissive screen according to claim 13, wherein the two phosphors and the diffusing material are arranged in a matrix.   The transmissive screen according to claim 13, wherein the phosphor layer has a black stripe that is provided between the two phosphors and the diffusing material and absorbs visible light.   The transmissive screen according to claim 16, wherein the photosensitive layer is provided so as to correspond to the black stripe of the phosphor layer and has a black stripe similar to the black stripe.   The transmissive screen according to any one of claims 13 to 17, wherein light other than the excitation light and light other than visible light emitted from the phosphor layer is ultraviolet light.   The excitation light is blue light, and the phosphor layer includes a diffusing material that diffuses the blue light, a red phosphor that emits red light, and a green phosphor that emits green light. The transmission screen according to any one of 1 to 18.   The transmissive screen according to any one of claims 1 to 19, wherein the first selective reflection layer is formed of a dielectric multilayer mirror that reflects the excitation light.   21. The transmissive screen according to claim 1, wherein the first selective reflection layer is formed of a color filter that absorbs the excitation light.   The second selective reflection layer that is provided on the incident side of the excitation light with respect to the phosphor layer, transmits the excitation light, and reflects visible light emitted from the phosphor layer. The transmission screen according to any one of the above.   The transmissive screen according to claim 22, wherein the second selective reflection layer is made of a dielectric multilayer mirror.   The transmissive screen according to any one of claims 1 to 23, wherein the phosphor layer and the photosensitive layer are integrally formed.   The transmissive screen according to any one of claims 1 to 24, wherein the photochromic compound transitions from a state of transmitting the visible light to a state of absorbing the visible light by heating.   A rear projection display device comprising: the transmission screen according to any one of claims 1 to 25; and a video projection unit that projects the excitation light modulated according to an image signal onto the transmission screen.

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