# US 2014/0152880 A1 · Solid-state imaging apparatus

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- Number: US 2014/0152880 A1
- Document ID: US20140152880A1
- Status: Published application
- Kind: A1
- Application number: 14/171,953
- Filed: 2014-02-04
- Published: 2014-06-05
- Earliest claimed: 2011-08-08
- Assignees: Panasonic Corporation
- Applicants: Panasonic Corporation
- Inventors: Shigeru SAITOU; Kazutoshi ONOZAWA
- Web page: https://patentgrep.com/patent/US20140152880A1

## CPC

- G02B 5/1885: {Arranged as a periodic array}
- G02B 19/0076: {for use with a detector (G02B19/009, G02B19/0095 take precedence)}
- H04N 23/50: Constructional details
- H10F 39/8063: {Microlenses}
- H10F 39/8067: {Reflectors}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION

## Abstract

A solid-state imaging apparatus includes unit pixels each having a light-collecting element for collecting incident light, the light-collecting element: is divided into a plurality of zones each having a ring shape of concentric structure and a line width shorter than a wavelength of the incident light; and has an effective refractive index distribution controlled according to a combination of the zones, and in at least one of the zones, a light-transmissive film which is included in the zone is divided in a circumferential direction of the concentric structure at an interval shorter than the wavelength of the incident light.

## Claims

### Claim 1

A solid-state imaging apparatus comprising unit pixels, the unit pixels each having a light-collecting element for collecting incident light,
wherein the light-collecting element: is divided into a plurality of zones each having a ring shape of concentric structure and a line width shorter than a wavelength of the incident light; and has an effective refractive index distribution controlled according to a combination of the zones, and
in at least one of the zones, a light-transmissive film which is included in the zone is divided in a circumferential direction of the concentric structure at an interval shorter than the wavelength of the incident light.

### Claim 2 (depends on 1)

The solid-state imaging apparatus according to claim 1,
wherein the light-transmissive film of the zone includes a plurality of arc-shaped light-transmissive film elements divided at an interval shorter than the wavelength of the incident light.

### Claim 3 (depends on 2)

The solid-state imaging apparatus according to claim 2,
wherein the arc-shaped light-transmissive film elements are provided continuously with a light-transmissive film in a ring shape arranged along an inner circumference or an outer circumference of the arc-shaped light-transmissive film element.

### Claim 4 (depends on 2)

The solid-state imaging apparatus according to claim 2,
wherein the arc-shaped light-transmissive film elements are each disposed on a same circumference concentric to a center of one of the unit pixels.

### Claim 5 (depends on 1)

An imaging apparatus comprising:
the solid-state imaging apparatus according to claim 1; and an imaging lens arranged on a light incident side of the light-collecting element, the imaging lens being for guiding light,
wherein the imaging lens is an interchangeable lens including: a first imaging lens which guides the light onto the light-collecting element in a wide-angle manner; and a second imaging lens which guides the light onto the light-collecting element telecentrically.