US 12,364,042 B2
Optical element having both color filter function and lens function, image sensor thereof and imaging device
Masashi Miyata, Musashino (JP); Fumihide Kobayashi, Musashino (JP); and Toshikazu Hashimoto, Musashino (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 18/683,149
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Aug. 18, 2021, PCT No. PCT/JP2021/030262
§ 371(c)(1), (2) Date Feb. 12, 2024,
PCT Pub. No. WO2023/021632, PCT Pub. Date Feb. 23, 2023.
Prior Publication US 2024/0347566 A1, Oct. 17, 2024
Int. Cl. H10F 39/00 (2025.01); G02B 5/00 (2006.01); H10F 39/12 (2025.01); G02B 5/20 (2006.01)
CPC H10F 39/8053 (2025.01) [G02B 5/00 (2013.01); H10F 39/12 (2025.01); H10F 39/802 (2025.01); H10F 39/806 (2025.01); H10F 39/8063 (2025.01); G02B 5/20 (2013.01); H10F 39/8067 (2025.01)] 8 Claims
OG exemplary drawing
 
1. An optical element comprising: a transparent layer for covering a pixel layer comprising a plurality of pixels each including a photoelectric conversion element, wherein the transparent layer comprises 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 comprising 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 substrate, wherein the plurality of structures disposed in the multiple layers are configured to guide light of a color corresponding to each of the plurality of pixels among incident light to a corresponding pixel.