Title:
LENS, IMAGING DEVICE, AND LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/189555
Kind Code:
A1
Abstract:
The present technology relates to a lens, an imaging device, and a light-emitting device, the lens making it possible to achieve isotropy of optical properties and high diffraction efficiency in a peripheral region that is a region away from the optical center of the lens. Provided is a metalens comprising a central region located in a central portion, and a plurality of ring-shaped peripheral regions located around the central region, wherein a pattern in the peripheral region has a constant period in an angular direction, and when the angular period of the k-th peripheral region from the inside is taken as Δθk, and the angular period of the k+1-th peripheral region from the inside, which is adjacent to the k-th peripheral region, is taken as Δθk+1, the angular period Δθk:Δθk+1 is an integer ratio of Mk:Mk+1, and the Mk+1 is an integer less than 10.
Inventors:
TAHARA HIROYUKI (JP)
YASUI TOSHIFUMI (JP)
YASUI TOSHIFUMI (JP)
Application Number:
PCT/JP2023/009882
Publication Date:
October 05, 2023
Filing Date:
March 14, 2023
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
G02B3/00; G02B5/18; G02B7/40; G03B17/02
Foreign References:
| JP2018537804A | 2018-12-20 | |||
| US20200174163A1 | 2020-06-04 | |||
| JP2019516128A | 2019-06-13 |
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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