Title:
OPTICAL MEMBER, LIGHT SOURCE DEVICE, AND HEAD-UP DISPLAY
Document Type and Number:
WIPO Patent Application WO/2023/153510
Kind Code:
A1
Abstract:
A first lens (12) comprises: an optical element in which a refraction part (17) that is disposed in the central part thereof and reflection parts (18) that are disposed on both sides of the refraction part (17) extend in a predetermined direction; and a diffusion part (13) which is provided in at least one of a region that corresponds to a light beam output from the refraction part (17) of the first lens (12) and regions that correspond to light beams output from the reflection parts (18) of the first lens (12).
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Inventors:
NOMURA KEIICHIRO (JP)
TOYOSHIMA TAKANOBU (JP)
HORI MASAHIRO (JP)
TOYOSHIMA TAKANOBU (JP)
HORI MASAHIRO (JP)
Application Number:
PCT/JP2023/004786
Publication Date:
August 17, 2023
Filing Date:
February 13, 2023
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
F21S2/00; F21V5/00; F21V5/04; G02B27/01; G02F1/13357; F21Y115/10; F21Y115/30
Foreign References:
| JP2016126314A | 2016-07-11 | |||
| JP2022018831A | 2022-01-27 | |||
| JP2015219425A | 2015-12-07 |
Attorney, Agent or Firm:
SHIN-EI, P.C. (JP)
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