CPC H01L 27/14621 (2013.01) [H01L 27/14625 (2013.01); H01L 27/14645 (2013.01); H01L 27/14868 (2013.01); H04N 25/134 (2023.01)] | 20 Claims |
1. 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 the color separation lens array is configured to change continuously phase distribution in the plurality of periodic regions and to interrupt phase distribution at a boundary between adjacent ones of the plurality of periodic regions.
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