US 12,105,251 B2
Metalens portion, electronic device and method
Tonino Greco, Stuttgart (DE); and Klaus Zimmermann, Stuttgart (DE)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/431,439
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Mar. 24, 2020, PCT No. PCT/EP2020/058226
§ 371(c)(1), (2) Date Aug. 17, 2021,
PCT Pub. No. WO2020/200931, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 19166120 (EP), filed on Mar. 29, 2019.
Prior Publication US 2022/0137259 A1, May 5, 2022
Int. Cl. G02B 1/00 (2006.01); G02B 3/00 (2006.01)
CPC G02B 1/002 (2013.01) [G02B 3/0087 (2013.01); G02B 2207/101 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A metalens portion comprising:
a plurality of holes in a first substrate, wherein
at least two holes of the plurality of holes differ in size,
a plurality of refractive indexes of the metalens portion is defined by at least one of a shape of the plurality of holes and an arrangement pattern of the plurality of holes, thereby providing a metalens, and
the refractive indexes increase from an innermost refractive index of the metalens to an intermediate refractive index, the intermediate refractive index being immediately adjacent to an outermost refractive index of the metalens.