Color separation element and image sensor including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsSookyoung Roh, Seokho Yun
Life of this patent
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Abstract
Provided are a color separation element and an image sensor including the same. The color separation element includes a spacer layer; and a color separation lens array, which includes at least one nano-post arranged in the spacer layer and is configured to form a phase distribution for splitting and focusing incident light according to wavelengths, wherein periodic regions in which color separation lens arrays are repeatedly arranged are provided, and the color separation lens array is configured to interrupt phase distribution at the boundary of the periodic regions.
Claims18
A color separation element comprising:
- a spacer layer;
- and
- a color separation lens array, which comprises one or more nano-posts arranged on the spacer layer, the color separation lens array configured to form a phase distribution that splits and focuses light incident to the color separation lens array based on wavelengths of the light,
- wherein the color separation lens array comprises a plurality of periodic regions in which the one or more nano-posts are repeatedly arranged, and,
- wherein the plurality of periodic regions comprises a first periodic region and a second periodic region adjacent to each other, and a first phase distribution formed by a first set of the one or more nano-posts of the color separation lens array in the first periodic region and a second phase distribution formed by a second set of the one or more nano-posts of the color separation lens array in the second periodic region do not overlap at a boundary between the first periodic region and the second periodic region.
An image sensor comprising:
- an optical sensor comprising a plurality of light detecting cells for sensing light;
- a spacer layer provided in the optical sensor;
- and
- a color separation lens array, which comprises one or more nano-posts arranged on the spacer layer, the color separation lens array configured to form a phase distribution that splits and focuses light incident to the color separation lens array based on wavelengths of the light,
- wherein the color separation lens array comprises a plurality of periodic regions in which the one or more nano-posts are repeatedly arranged, and
- wherein the plurality of periodic regions comprises a first periodic region and a second periodic region adjacent to each other, and a first phase distribution formed by a first set of the one or more nano-posts of the color separation lens array in the first periodic region and a second phase distribution formed by a second set of the one or more nano-posts of the color separation lens array in the second periodic region do not overlap at a boundary between the first periodic region and the second periodic region.
Dependencies are inferred from the claim text.