Invention Grant
- Patent Title: Planar light source with through hole and adjusting members
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Application No.: US18057006Application Date: 2022-11-18
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Publication No.: US11821622B2Publication Date: 2023-11-21
- Inventor: Takuya Nakabayashi , Toru Hashimoto
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan
- Agency: HUNTON ANDREWS KURTH LLP
- Priority: JP 20015664 2020.01.31 JP 20160936 2020.09.25
- Main IPC: F21V9/30
- IPC: F21V9/30 ; F21V8/00 ; G02F1/13357 ; F21Y105/16 ; G02F1/1335

Abstract:
A planar light source includes a light guide member having a through hole, a light source, a first light adjusting member, a second light adjusting member, and a light transmissive member. The first light adjusting member having reflectivity and transmissivity with respect to light from the light source is disposed on or above an upper face of the light source in the through hole. The second light adjusting member having reflectivity and transmissivity with respect to the light from the light source is disposed above and apart from the first light adjusting member. The first light transmissive member having a higher transmissivity with respect to the light from the light source than the transmissivities of the first and second light adjusting members is disposed between the first light adjusting member and the second light adjusting member, and between a lateral face of the light source and the light guide member.
Public/Granted literature
- US20230082182A1 PLANAR LIGHT SOURCE WITH THROUGH HOLE AND ADJUSTING MEMBERS Public/Granted day:2023-03-16
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