Title:
LIGHT-EMITTING DEVICE, LIGHT SOURCE UNIT, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2024/062910
Kind Code:
A1
Abstract:
A light-emitting device (200) comprises a light source (220) and a lens (230) having: (i) a bowl-shaped portion (233) having an incident surface (231) on which the light emitted by the light source (220) is incident and becoming wider with increasing distance from the light source (220); and (ii) a protrusion portion (234) having an exit surface (232) from which the light incident on the incident surface (231) exits and protruding in a direction away from the light source (220). The protrusion portion (234) has a first total reflection surface (235) totally reflecting the light incident on the incident surface (231). The bowl-shaped portion (233) has a second total reflection surface (236) totally reflecting the light incident on the incident surface (231). The light-emitting device (200) comprises a first light reduction portion that reduces, among the light incident on the lens (230), at least part of the light emitted toward a support body positioned in a direction intersecting with the optical axis of the light emitted by the light source (220).
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Inventors:
KANAYAMA YOSHIHIKO
Application Number:
PCT/JP2023/032262
Publication Date:
March 28, 2024
Filing Date:
September 04, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F21S41/275; F21S41/13; F21S41/143; F21S41/20; F21S41/265; F21S45/70; F21V5/00; F21V5/08; F21W102/17; F21Y115/00
Foreign References:
JP2020019303A | 2020-02-06 | |||
JP2021017228A | 2021-02-15 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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