Two groups of multilayer selective light wave absorbing materials, group (a) and group (b), where group (a) is applied on top of the surface of a projection screen or any surface on which colored videos or pictures can be projected on by a projector, where the multilayers of group (a) selectively absorb the visible light waves with wavelengths other than the RGB waves matching the RGB wave wavelengths projected by the projector, and where group (b) is applied on top of the transparent surfaces of windows and light fixtures present where the projector and the screen are placed or installed, where the multilayers of group (b) selectively absorb the visible light waves matching the RGB light waves projected by the projector. With group (b) absorbing the RGB waves of the ambient light on the transparent surface of the windows and the surface of the light fixtures, and the rest of the light waves of the ambient light being absorbed by group (a) on top of the projection screen or surface, the result is then no light waves reaching the surface of the projection screen or surface other than the projector's RGB. This means that without the projector light, the screen appears as a black screen with a high contrast ratio and high gain. (FIG. 3)

This invention presented herein shall be utilized for front and rear projection. In addition, group (a) multilayers can be used on LCD screens, including Switchable Glass and films, to enhance ambient light rejection and to help reduce the leaking light from the light source inside the LCD TVs. Group (a) multilayers can be used on the surface of LED screens to enhance ambient light rejection and can be used on the cover of mobile phone screens to improve visibility under bright light conditions.

Two groups of multilayer selective light wave absorbing materials, group (a) and group (b), where group (a) is applied on top of the surface of a projection screen or any surface on which colored videos or pictures can be projected on by a projector, where the multilayers of group (a) selectively absorb the visible light waves with wavelengths other than the RGB waves matching the RGB wave wavelengths projected by the projector, and where group (b) is applied on top of the transparent surfaces of windows and light fixtures present where the projector and the screen are placed or installed, where the multilayers of group (b) selectively absorb the visible light waves matching the RGB light waves projected by the projector. With group (b) absorbing the RGB waves of the ambient light on the transparent surface of the windows and the surface of the light fixtures, and the rest of the light waves of the ambient light being absorbed by group (a) on top of the projection screen or surface, the result is then no light waves reaching the surface of the projection screen or surface other than the projector's RGB. This means that without the projector light, the screen appears as a black screen with a high contrast ratio and high gain. (FIG. 3)

This invention presented herein shall be utilized for front and rear projection. In addition, group (a) multilayers can be used on LCD screens, including Switchable Glass and films, to enhance ambient light rejection and to help reduce the leaking light from the light source inside the LCD TVs. Group (a) multilayers can be used on the surface of LED screens to enhance ambient light rejection and can be used on the cover of mobile phone screens to improve visibility under bright light conditions.

Provided is a reflective screen and a projection image display system in which a transmittance of light can be selectively changed, a transmittance in a transparent state is sufficiently high, a voltage does not need to be applied constantly, and a voltage is applied to decrease a transmittance of light in a case where the reflective screen is irradiated with video light. The reflective screen includes: a light reflecting layer that is formed of a cholesteric liquid crystal layer and where a selective reflection wavelength at a polar angle of 60° is present in a visible range, in which senses of helix of all of cholesteric liquid crystal layers are the same and Expression (1) is satisfied; and a transparent first electrode, a transparent second electrode, and a light control layer that are provided on a rear side with respect to the light reflective layer, the light control layer being disposed between the first electrode and the second electrode, in which the light control layer includes a polymer network and liquid crystal molecules and changes between a first state where light is scattered and a second state where transmission of light is allowed by changing a magnitude of a voltage applied, the polymer network having a three-dimensional net shape having a plurality of domains, and the liquid crystal molecules being positioned in the domains.

R[−60,40](550)/R[−60,30](550)≥1.5  Expression (1)

One or more perforation hole pattern methods are applied (402) to generate a spatial distribution of perforation holes forming a semi-random pattern for an image display screen. The image display screen is perforated (404) with the spatial distribution of perforation holes forming the semi-random pattern. Image rendering light is emitted (406) with a light projector toward the image display screen that is installed in an image rendering environment. At least a portion of the image rendering light emitted from the light projector is reflected (408) by the image display screen, toward a viewer.

One or more perforation hole pattern methods are applied (402) to generate a spatial distribution of perforation holes forming a semi-random pattern for an image display screen. The image display screen is perforated (404) with the spatial distribution of perforation holes forming the semi-random pattern. Image rendering light is emitted (406) with a light projector toward the image display screen that is installed in an image rendering environment. At least a portion of the image rendering light emitted from the light projector is reflected (408) by the image display screen, toward a viewer.

This reflective screen 10 reflects a part of image light beam projected from an image source LS, to display an image. The reflective screen 10 is provided with: a first optical shape layer 12 which has optical transparency and has a plurality of unit optical shapes 121 arranged on a rear surface thereof; and a reflective layer 13 which is formed in at least some of the unit optical shapes 121 and by which a part of incident light is reflected and at least the other part of the incident light is transmitted, wherein a light diffusing action in the direction in which the unit optical shapes 121 are arranged is larger than a light diffusing action in a direction perpendicular to the arrangement direction.

The present invention aims to provide a luminescent curved glass which, despite being curved with a small radius of curvature, can provide a clear display on its entire surface when irradiated with light, and curved digital signage including the luminescent curved glass. Provided is a luminescent curved glass including a laminate including a transparent plate having a radius of curvature of 3,000 mm or lower and a luminescent sheet, the luminescent sheet containing a thermoplastic resin and a luminescent material that emits visible light having a wavelength of 380 to 750 nm under excitation light.

The present invention aims to provide a luminescent curved glass which, despite being curved with a small radius of curvature, can provide a clear display on its entire surface when irradiated with light, and curved digital signage including the luminescent curved glass. Provided is a luminescent curved glass including a laminate including a transparent plate having a radius of curvature of 3,000 mm or lower and a luminescent sheet, the luminescent sheet containing a thermoplastic resin and a luminescent material that emits visible light having a wavelength of 380 to 750 nm under excitation light.

There is provided an information processing device including an information acquisition unit that acquires information from an information providing device that provides the information related to quantitative numerical values to be grasped by the medical practitioner involved with a medical practice, an image data generation unit that generates image data related to the acquired information, and a control unit that controls an installation position of a light source irradiating drawing light having illuminance visually recognizable under a shadowless lamp or an operation state of an optical system that scans an irradiation position of the drawing light so as to draw the image data.

There is provided an information processing device including an information acquisition unit that acquires information from an information providing device that provides the information related to quantitative numerical values to be grasped by the medical practitioner involved with a medical practice, an image data generation unit that generates image data related to the acquired information, and a control unit that controls an installation position of a light source irradiating drawing light having illuminance visually recognizable under a shadowless lamp or an operation state of an optical system that scans an irradiation position of the drawing light so as to draw the image data.