Title:
LIGHT SOURCE DEVICE AND PROJECTION-TYPE VIDEO DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/058586
Kind Code:
A1
Abstract:
This light source device comprises: a light source element that outputs light source light which is light in a first wavelength region; a selection reflection element that divides the light source light into first light and second light; a first light direction conversion element that reflects the first light in a second direction; and a wavelength conversion element that converts the first light into third light. The selection reflection element emits the second light and the third light in a third direction. The light source element outputs the light source light in a direction different from the second direction.
Inventors:
TANAKA YOSHIKI
IKEDA TAKASHI
OKUNO MANABU
MAEDA MAKOTO
IKEDA TAKASHI
OKUNO MANABU
MAEDA MAKOTO
Application Number:
PCT/JP2022/036885
Publication Date:
April 13, 2023
Filing Date:
October 03, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G03B21/00; F21S2/00; F21V7/28; G03B21/14
Foreign References:
| JP2017122810A | 2017-07-13 | |||
| JP2019028361A | 2019-02-21 | |||
| JP2016142983A | 2016-08-08 | |||
| CN211180515U | 2020-08-04 | |||
| US5473465A | 1995-12-05 | |||
| JP2013190519A | 2013-09-26 | |||
| JPH0566367A | 1993-03-19 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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