Title:
LIGHT SOURCE DEVICE AND HEAD-UP DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/080003
Kind Code:
A1
Abstract:
Provided is a light source device which can improve a manufacturing yield. Also, provided is a light source device which can reduce polarization loss that occurs depending on residual stress in a light guide body. A light source device (100) of the present invention comprises: an LED element (121) as a slight source; a collimator (140) that is disposed on an emission side of the light source, and adjusts a traveling direction of light incident from the light source; a light guide body (160) that is disposed on an emission side of the collimator (140), and guides light incident from the collimator (140) toward a display panel (64); and a polarization conversion element (150) that is disposed between the light guide body (160) and the display panel (64) on an emission side of the light guide body (160), and makes polarization properties of light incident from the light guide body (160) uniform.
Inventors:
NAGAI TOSHIMASA (JP)
YAMAMOTO TOMOKI (JP)
SUGIYAMA TOSHINORI (JP)
YAMAMOTO TOMOKI (JP)
SUGIYAMA TOSHINORI (JP)
Application Number:
PCT/JP2022/039552
Publication Date:
May 11, 2023
Filing Date:
October 24, 2022
Export Citation:
Assignee:
MAXELL LTD (JP)
International Classes:
G02F1/13357; F21S2/00; F21V5/00; F21V5/04; F21V9/14; G02B27/01
Domestic Patent References:
| WO2018229961A1 | 2018-12-20 |
Foreign References:
| US20200033600A1 | 2020-01-30 | |||
| JP2017188311A | 2017-10-12 | |||
| JP2003330110A | 2003-11-19 |
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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