Title:
LIGHTING DEVICE AND VEHICULAR HEADLAMP
Document Type and Number:
WIPO Patent Application WO/2018/012058
Kind Code:
A1
Abstract:
This lighting device comprises: a light-emitting element; a first lens whereby light, which has been generated at the light-emitting element, is captured and then let out; and a second lens whereby the light, which has been let out from the first lens, is captured and let out in a predetermined direction. The first lens comprises: a first lens inlet port for letting in the light generated by the light-emitting element; a first lens outlet port for letting out the light that has been let in from the first lens inlet port and has passed through the interior of the first lens; and a plurality of first lens side portion wall surfaces provided between the first lens inlet port and the first lens outlet port. The plurality of first lens side portion wall surfaces comprise: a reflective side surface portion for reflecting the light that has been let in from the first lens inlet port to the interior of the first lens; and a side surface portion configured in such manner that the light, which has a smaller luminosity than the luminosity of the light that is incident to the reflective side surface portion, is let in thereto.
Inventors:
MATSUDA TAKASHI
KASANO MASAHIRO
KASANO MASAHIRO
Application Number:
PCT/JP2017/014057
Publication Date:
January 18, 2018
Filing Date:
April 04, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F21V5/00; F21V5/04; G02B3/08; G02B5/08; H01L33/00; F21Y115/10
Domestic Patent References:
| WO2015107678A1 | 2015-07-23 | |||
| WO2015040671A1 | 2015-03-26 |
Foreign References:
| JP2012059409A | 2012-03-22 | |||
| JP2016058226A | 2016-04-21 | |||
| US20070195541A1 | 2007-08-23 |
Other References:
See also references of EP 3486550A4
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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