Title:
OPTICAL MEMBER AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/070910
Kind Code:
A1
Abstract:
An optical member (100) comprises a light guide member (110) and at least one cover member (200F), (200R), and is configured so as to emit light towards the front surface side. The light guide member comprises: a light guide layer (10) having a light-receiving side surface that receives light emitted from a light source (LS); and a light distribution control structure (14A) that can guide at least a portion of the light propagated inside the light guide layer towards the front surface side. The at least one cover member includes: a first cover member (200F) disposed on the front surface side of the light guide member; or a second cover member (200R) disposed on the rear surface side opposite to the front surface side of the light guide member. The optical member is configured such that over 50% of the light that has entered the light guide layer is emitted from the front surface side of the light guide member.
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| JP2023151746 | LIGHT SOURCE DEVICE AND PROJECTION DEVICE |
Inventors:
WATANABE TAICHI (JP)
NAKAMURA KOZO (JP)
NAKAMURA KOZO (JP)
Application Number:
PCT/JP2023/034396
Publication Date:
April 04, 2024
Filing Date:
September 22, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
F21S2/00; F21V3/00; F21V3/06; F21V3/10; F21V8/00; G02B5/00; G02B6/00; F21Y115/10
Domestic Patent References:
| WO2006098029A1 | 2006-09-21 | |||
| WO2019182100A1 | 2019-09-26 |
Foreign References:
| JP2014010919A | 2014-01-20 | |||
| JP2014022226A | 2014-02-03 | |||
| JP2009080949A | 2009-04-16 | |||
| JP2020017529A | 2020-01-30 |
Attorney, Agent or Firm:
OKUDA Seiji (JP)
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