Title:
LIGHTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/147515
Kind Code:
A1
Abstract:
A lighting apparatus (100), comprising: a light source (110) and a first light guide (120), wherein the first light guide (120) comprises a first light guide portion (121) and a second light guide portion (122), and the second light guide portion (122) comprises a light-emitting surface (123); light emitted by the light source (110) couplingly enters the first light guide portion (121), and is emitted from the light-emitting surface (123) of the second light guide portion (122); the cross-sectional area of the second light guide portion (122) perpendicular to the center line of the first light guide (120) gradually decreases along the optical axis direction of the light source (110); and the light-emitting surface (123) does not have rotational symmetry. By means of the apparatus above, light rays emitted from the light-emitting surface are made to be distributed unevenly in a space. Modifying the distribution of light emitted by the lighting apparatus (100) helps to reduce light loss and increase the utilization of the light.
Inventors:
CHEN BIN (CN)
JIANG RU (CN)
ZHANG XIANPENG (CN)
JIANG RU (CN)
ZHANG XIANPENG (CN)
Application Number:
PCT/CN2019/127259
Publication Date:
July 23, 2020
Filing Date:
December 23, 2019
Export Citation:
Assignee:
YLX INC (CN)
International Classes:
F21S8/00; B60Q1/16; F21S43/236
Foreign References:
| CN106247255A | 2016-12-21 | |||
| CN209540617U | 2019-10-25 | |||
| US20130027964A1 | 2013-01-31 | |||
| CN103244889A | 2013-08-14 | |||
| CN102788301A | 2012-11-21 | |||
| CN105264287A | 2016-01-20 | |||
| CN105393048A | 2016-03-09 |
Other References:
See also references of EP 3913278A4
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