Title:
OPTICAL MEMBER AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/053572
Kind Code:
A1
Abstract:
Provided are an optical member and illumination device in which uneven luminance can be reduced. Provided is an optical member (20) comprising a refraction part (21) that refracts light and a reflection part (22) that has protrusions (23) arranged on both sides of the refraction part (21), the protrusions (23) being provided with light reflection adjustment parts (24) that adjust reflection of light that is incident on the protrusions (23).
Inventors:
NOMURA KEIICHIRO (JP)
SAWA YOSHINORI (JP)
SAWA YOSHINORI (JP)
Application Number:
PCT/JP2023/032060
Publication Date:
March 14, 2024
Filing Date:
September 01, 2023
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
G02B3/02; F21S2/00; F21V5/00; F21V5/04; G02B3/00; F21Y115/10
Foreign References:
| JP2018535453A | 2018-11-29 | |||
| JP2006164923A | 2006-06-22 | |||
| JP2014038233A | 2014-02-27 | |||
| JP2004516684A | 2004-06-03 | |||
| JP2021189306A | 2021-12-13 | |||
| CN114719226A | 2022-07-08 | |||
| US20200124834A1 | 2020-04-23 | |||
| JP2014017182A | 2014-01-30 |
Attorney, Agent or Firm:
FUJIOKA, Takahiro (JP)
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