# US 2019/0377111 A1 · Structure and optical sensor

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- Number: US 2019/0377111 A1
- Document ID: US20190377111A1
- Status: Published application
- Kind: A1
- Application number: 16/548,368
- Filed: 2019-08-22
- Published: 2019-12-12
- Earliest claimed: 2017-03-29
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Yoshinori TAGUCHI; Tetsushi MIYATA
- Web page: https://patentgrep.com/patent/US20190377111A1

## CPC

- G02B 5/201: {in the form of arrays}
- G02B 5/0242: {by means of dispersed particles}
- G02B 5/0278: {used in transmission}
- G02B 5/208: {for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation}
- H10F 39/8053: {Colour filters}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION

## Abstract

A structure includes a support 10, a first optical filter layer 24 provided on the support, a light scattering layer 50 provided on the light path of the first optical filter layer 24, and a second optical filter layer 21, 22, 23, 25, and 26 provided on the support 10, on a different region from the region where the first optical filter layer is provided, and the light scattering layer 50 is not provided on the light path of the second optical filter layer.

## Claims

### Claim 1

A structure comprising:
a support;
a first optical filter layer provided on the support;
a light scattering layer provided on a light path of the first optical filter layer; and
a second optical filter layer provided on a region on the support different from a region where the first optical filter layer is provided,
wherein the light scattering layer is not provided on a light path of the second optical filter layer.

### Claim 2 (depends on 1)

The structure according to claim 1,
wherein each of the first optical filter layer and the second optical filter layer independently includes at least one selected from a colored layer, a transparent layer, an ultraviolet cutting layer, a near-infrared cutting layer, or a near-infrared transmission layer.

### Claim 3 (depends on 1)

The structure according to claim 1,
wherein the second optical filter layer includes at least one selected from a colored layer or a near-infrared transmission layer.

### Claim 4 (depends on 1)

The structure according to claim 1,
wherein the first optical filter layer includes at least one selected from a colored layer, a transparent layer, or a near-infrared cutting layer, and
the second optical filter layer includes at least one selected from a colored layer or a near-infrared transmission layer.

### Claim 5 (depends on 1)

The structure according to claim 1,
wherein the first optical filter layer includes a near-infrared cutting layer, and
the second optical filter layer includes a colored layer.

### Claim 6 (depends on 2)

The structure according to claim 2,
wherein the colored layer is a colored layer selected from a green colored layer, a red colored layer, a blue colored layer, a cyan colored layer, a magenta colored layer, and a yellow colored layer.

### Claim 7 (depends on 1)

The structure according to claim 1,
wherein the light scattering layer is provided on a light incident side of the first optical filter layer.

### Claim 8 (depends on 1)

The structure according to claim 1,
wherein the light scattering layer has a value of L* of 35 to 100, a value of a* of −20 to 20, and a value of b* of −40 to 30 in an L*a*b* color system of CIE 1976.

### Claim 9 (depends on 1)

The structure according to claim 1,
wherein the light scattering layer has a value of L* of 35 to 100, a value of a* of −10 to 0, and a value of b* of −35 to 0 in an L*a*b* color system of CIE 1976.

### Claim 10 (depends on 1)

The structure according to claim 1,
wherein the light scattering layer includes a white pigment.

### Claim 11 (depends on 10)

The structure according to claim 10,
wherein the white pigment is particles that have an average primary particle diameter of 50 to 150 nm.

### Claim 12 (depends on 10)

The structure according to claim 10,
wherein the white pigment is titanium oxide.

### Claim 13 (depends on 1)

The structure according to claim 1,
wherein the light scattering layer has 30% to 60% by mass of particles having an average primary particle diameter of 50 to 150 nm with respect to a total solid content of the light scattering layer.

### Claim 14 (depends on 1)

The structure according to claim 1, further comprising:
a near-infrared cutting layer that cuts at least a part of light in a wavelength range of 800 to 1,500 nm on the light path of the first optical filter layer.

### Claim 15 (depends on 14)

The structure according to claim 14,
wherein the near-infrared cutting layer includes a compound having a maximum absorption wavelength in a wavelength range of 800 to 1,500 nm.

### Claim 16 (depends on 14)

The structure according to claim 14,
wherein the near-infrared cutting layer contains at least one selected from tungsten oxide containing an alkali metal, a pyrrolopyrrole compound, a cyanine compound, a phthalocyanine compound, a naphthalocyanine compound, a tetraazaporphyrin compound, a diimmonium compound, a squarylium compound, or a copper complex.

### Claim 17 (depends on 14)

The structure according to claim 14,
wherein the near-infrared cutting layer contains a pyrrolopyrrole compound.

### Claim 18 (depends on 1)

The structure according to claim 1,
wherein the first optical filter layer and the second optical filter layer are two-dimensionally arranged on the support.

### Claim 19 (depends on 1)

An optical sensor comprising the structure according to claim 1.