Title:
LENS SYSTEM AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/181718
Kind Code:
A1
Abstract:
In order to reduce the occurrence of ring lines when a plurality of lens surfaces are present, there is provided a lens system having at least two lens surfaces, a plurality of concentrically arranged refracting regions being formed in each of the lens surfaces, first refracting regions as said refracting regions being formed in a first lens surface which is at least one of said lens surfaces, second refracting regions as said refracting regions being formed in a second lens surface which is a lens surface different from the first lens surface, and the first refracting regions being formed at a pitch that deviates 4% or more from an integer multiple of the pitch of the second refracting regions when the first refracting regions and the second refracting regions are each arranged on the same optical axis.
Inventors:
KUROKAWA SHUTARO (JP)
Application Number:
PCT/JP2023/005288
Publication Date:
September 28, 2023
Filing Date:
February 15, 2023
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
G02B3/08; G02B3/04; G02B27/02
Foreign References:
| JP2020013044A | 2020-01-23 | |||
| JPH02220001A | 1990-09-03 | |||
| JP2020013106A | 2020-01-23 | |||
| US20100175685A1 | 2010-07-15 | |||
| JPS61245102A | 1986-10-31 |
Attorney, Agent or Firm:
WATANABE Kaoru (JP)
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