Title:
接眼光学系及び画像観察装置
Document Type and Number:
Japanese Patent JP7285263
Kind Code:
B2
Abstract:
Proposed is a lens system capable of providing, to a user, a high-definition image in which generation of concentric circles is reduced. The lens system has one or more Fresnel lenses. A lens surface of each of the Fresnel lenses has a plurality of grooves that is concentrically formed. Both a pitch which is the distance between two adjacent grooves and the depth of each of the plurality of grooves vary with the distance from an optical axis that passes through the center of the lens system.
Inventors:
Manabu Ishioka
Yasutoshi Katsuta
Shotaro Tadashi
Yasutoshi Katsuta
Shotaro Tadashi
Application Number:
JP2020539555A
Publication Date:
June 01, 2023
Filing Date:
August 28, 2019
Export Citation:
Assignee:
Sony Interactive Entertainment Inc.
International Classes:
G02B25/00; G02B3/08; G02B13/18; G02B27/02
Domestic Patent References:
| JP2015203850A | ||||
| JP2006330432A | ||||
| JP2007011216A | ||||
| JP2017211475A |
Foreign References:
| WO2018008249A1 | ||||
| WO2018117025A1 | ||||
| WO2020021916A1 | ||||
| US20180074318 | ||||
| KR1020050023970A |
Attorney, Agent or Firm:
Patent Attorney Corporation Haruka International Patent Office
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