Invention Grant
- Patent Title: Light source device
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Application No.: US17153646Application Date: 2021-01-20
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Publication No.: US11649945B2Publication Date: 2023-05-16
- Inventor: Norimasa Yoshida , Tsuyoshi Okahisa
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan
- Agency: Foley & Lardner LLP
- Priority: JP 2020009416 2020.01.23 JP 2020028320 2020.02.21 JP 2020147019 2020.09.01
- Main IPC: F21V5/04
- IPC: F21V5/04 ; F21V5/00 ; H04N5/225 ; F21V33/00 ; G02B3/02 ; F21V5/08 ; F21Y105/10

Abstract:
A light source device includes a plurality of light emitting parts, a first lens, and an optical lens. Each light emitting part is configured to emit light from the light emitting surface at a first full-width half-maximum and is configured to be individually turned on. The optical lens has a first surface including incident regions and a second surface including emission regions. A minimum distance between the first surface of the optical lens and the first lens is 0.1 mm or more and 1.0 mm or less. A light emitted from each of the light emitting parts enters the optical lens through the first lens, the light being emitted from the first lens at a second full-width half-maximum smaller than the first full-width half-maximum, such that lights emitted from two or more of the light emitting parts are irradiated to two or more corresponding irradiation regions.
Public/Granted literature
- US20210231291A1 LIGHT SOURCE DEVICE Public/Granted day:2021-07-29
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