Optical element, image sensor and imaging device
AssigneeNTT, Inc.
InventorsMasashi MIYATA, Fumihide KOBAYASHI, Toshikazu HASHIMOTO
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Abstract
An optical element includes a transparent layer for covering a pixel layer including a plurality of pixels each including a photoelectric conversion element, wherein the transparent layer includes a transparent substrate and an air layer, wherein the air layer is located between the pixel layer and the transparent substrate; and a plurality of structures disposed in multiple layers including at least a first layer and a second layer, wherein structures in the first layer are disposed in the air layer, and structures in the second layer are disposed in the transparent layer.
Claims15
An optical element comprising:
- a transparent layer for covering a pixel layer including a plurality of pixels each including a photoelectric conversion element, wherein the transparent layer includes a transparent substrate and an air layer, wherein the air layer is located between the pixel layer and the transparent substrate;
- and
- a plurality of structures disposed in multiple layers including at least a first layer and a second layer, wherein structures in the first layer are disposed in the air layer, and structures in the second layer are disposed in the transparent layer.
5-8. (canceled)
An optical element comprising:
- a transparent layer for covering a plurality of pixels each including a photoelectric conversion element;
- and
- a plurality of structures disposed in a plane direction of the transparent layer, on a side opposite to the plurality of pixels with at least a part of the transparent layer interposed therebetween,
- wherein heights of the plurality of structures belonging to at least one layer among multiple layers are longer than length represented by the right side of a following formula (3)
- h
- layer
- ≧
- 1
- L
-
- λ
- r
- n
- 1
- -
- n
- 0
- .
- (
- 3
- )
An optical element comprising:
- a transparent layer for covering a plurality of pixels each including a photoelectric conversion element;
- and
- a plurality of structures disposed in a plane direction of the transparent layer, on a side opposite to the plurality of pixels with at least a part of the transparent layer interposed therebetween,
- wherein heights of the plurality of structures belonging to at least one layer among multiple layers are shorter than length represented by λr/(n1−n0).
Dependencies are inferred from the claim text.