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Patent Searching and Data


Title:
LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/015058
Kind Code:
A1
Abstract:
This lighting device (1) comprises: a housing (10); a fixed lens (40) that has a light source (22) fixed inside the housing (10) and emits light and a light emission surface (88) fixed inside the housing (10) and located closer to a light emission side in the Z direction (optical axis direction) than the light source (22); and a movable lens (60) which has a light projection surface (87) disposed closer to a light emission side in the Z direction than the fixed lens (40) and in which a distance between the movable lens (60) and the light source (22) in the Z direction can vary. A light incident surface (86) of the fixed lens (40) is substantially flat, while the light emission surface (88) is convex. A first projection area of the orthogonal projection of the fixed lens (40) on a vertical plane perpendicular to the Z direction is equal to or larger than a second projection area of the orthogonal projection of the light source (22) on the vertical plane.

Inventors:
YAMAUCHI SATORU
SHIRAKAWA TOMOKI
FUNAKI NAYUTA
TOMODA NAOKI
Application Number:
PCT/JP2020/027392
Publication Date:
January 28, 2021
Filing Date:
July 14, 2020
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F21S2/00; F21V14/06; F21S8/02; F21V5/04; F21V17/00; G02B3/08; G02B7/04; G02B15/14
Foreign References:
JP2016171069A2016-09-23
JP2017216061A2017-12-07
JP2013182717A2013-09-12
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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