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1. (WO2017175517) LIGHT SOURCE APPARATUS AND ELECTRONIC APPARATUS EMPLOYING SAME

Pub. No.:    WO/2017/175517    International Application No.:    PCT/JP2017/007738
Publication Date: Fri Oct 13 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: F21S 2/00
F21V 8/00
G02B 6/00
G02F 1/1335
G02F 1/13357
F21Y 115/10
Applicants: MAXELL, LTD.
マクセル株式会社
Inventors: SUGIYAMA, Toshinori
杉山 寿紀
HIRATA, Koji
平田 浩二
KUNII, Yasuhiko
國井 康彦
Title: LIGHT SOURCE APPARATUS AND ELECTRONIC APPARATUS EMPLOYING SAME
Abstract:
The objective of the present invention is to provide a light source apparatus which is compact and can be manufactured at low cost, and which is suitable for use as an illuminating light source for a display device of an electronic apparatus such as an HUD or an ultra-compact projector. This light source apparatus is provided with: a solid-state light source; a collimating optical system which converts light emitted from the solid-state light source into substantially parallel light; and a light guide into which the light emitted from the collimating optical system enters, and which outputs the light in a direction different to the direction from which the light entered the light guide. In addition, the light source apparatus is provided with a polarization converting element which aligns the polarization direction of the light emitted from the light guide into a single polarization direction.