# US 10,481,480 B2 · Reflection-type screen and sheet for reflection-type screen

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- Number: US 10,481,480 B2
- Document ID: US10481480B2
- Status: Granted
- Kind: B2
- Application number: 16/077,513
- Filed: 2017-02-22
- Published: 2019-02-14
- Granted: 2019-11-19
- Earliest claimed: 2016-02-25
- Assignees: Nicca Chemical Co., Ltd.
- Applicants: Nicca Chemical Co., Ltd.
- Inventors: Tadamasa Fujimura; Shigeru Shiozaki
- Web page: https://patentgrep.com/patent/US10481480B2

## CPC

- G03B 21/60: characterised by the nature of the surface
- G02B 5/0242: {by means of dispersed particles}
- G02B 5/0278: {used in transmission}
- G03B 21/602: Lenticular screens (G03B21/625 takes precedence)
- G03B 21/62: Translucent screens
- G03B 21/625: Lenticular translucent screens
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A reflective screen (1) displaying an image by projected light, comprises: a transparent substrate (10); a light-absorption layer (20) provided on the transparent substrate, the light-absorption layer reflecting the projected light; and a scattering layer (30) provided on the light-absorption layer, the scattering layer scattering the projected light, wherein the light-absorption layer has 30-90% transmittance with respect to visible light, and the scattering layer contains a light-scatterer (31) consisting of diamond particles and/or metallic inorganic particles.

## Claims

### Claim 1

A reflective screen displaying an image by projected light, the reflective screen comprising:
a transparent substrate;
a light-absorption layer provided in direct contact with the transparent substrate with or without an adhesive, the light-absorption layer absorbing visible light; and
a scattering layer provided in direct contact with the light-absorption layer with or without an adhesive, the scattering layer scattering the projected light,
wherein
the light-absorption layer has 30-90% transmittance with respect to visible light, and
the scattering layer contains a light-scattering medium consisting of diamond particles and/or metallic inorganic particles.

### Claim 2 (depends on 1)

The reflective screen according to claim 1, wherein the transparent substrate consists of glass or transparent polymer resin.

### Claim 3 (depends on 1)

The reflective screen according to claim 1, wherein the light-absorption layer is a layer consisting of a metal thin film, a dielectric multilayer film, or a film containing dye or pigment.

### Claim 4 (depends on 1)

The reflective screen according to claim 1, wherein the scattering layer consists of glass or polymer resin containing a light-scattering medium consisting of diamond particles and/or metallic inorganic particles.

### Claim 5 (depends on 1)

The reflective screen according to claim 1, comprising a hard coat layer on its surface.

### Claim 6

A reflective screen displaying an image by projected light, the reflective screen comprising:
a colored substrate having 30-90% transmittance with respect to visible light; and
a scattering layer provided on the colored substrate, the scattering layer scattering the projected light,
wherein the scattering layer contains a light-scattering medium consisting of diamond particles or diamond particles and metallic inorganic particles.

### Claim 7 (depends on 6)

The reflective screen according to claim 6, wherein the colored substrate consists of glass or polymer resin containing dye or pigment.

### Claim 8 (depends on 6)

The reflective screen according to claim 6, wherein the scattering layer consists of glass or polymer resin containing a light-scattering medium consisting of diamond particles or diamond particles and metallic inorganic particles.

### Claim 9 (depends on 6)

The reflective screen according to claim 6, comprising a hard coat layer on its surface.

### Claim 10

A sheet for a reflective screen displaying an image by projected light, the sheet for the reflective screen comprising:
a transparent sheet consisting of transparent polymer resin, the transparent sheet having flexibility;
a light-absorption layer provided in direct contact with the transparent substrate with or without an adhesive, the light-absorption layer absorbing visible light; and
a scattering layer provided in direct contact with the light-absorption layer with or without an adhesive, the scattering layer scattering the projected light,
wherein
the light-absorption layer has 30-90% transmittance with respect to visible light, and
the scattering layer contains a light-scattering medium consisting of diamond particles and/or metallic inorganic particles.

### Claim 11

A sheet for a reflective screen displaying an image by projected light, the sheet for the reflective screen comprising:
a colored sheet consisting of polymer resin, the colored sheet having flexibility and 30-90% transmittance with respect to visible light; and
a scattering layer provided on the colored sheet, the scattering layer scattering the projected light,
wherein the scattering layer contains a light-scattering medium consisting of diamond particles or diamond particles and metallic inorganic particles.