Lichtprojektionseinheit und Lichtprojektionsvorrichtung

Details

Veröffentlichungs-Nr.

EP2518838

Aktenzeichen

EP12002823

Anmeldetag

23. April 2012

Veröffentlichung

13. März 2019

Erteilung

13. März 2019

Rechtsraum

EP

IPC

H01S5/00H01S5/40H01L23/00F21S41/14F21S41/24F21S41/16// H01S5/024H01S5/022H01S5/20H01S5/22H01S5/343

Abstract

A light projection unit (20) is provided that can reduce the production of a portion where the light density is excessively increased on a fluorescent member (22). This light projection unit includes: a light collection member (21) that includes a light entrance surface (21a) and a light emission surface (21b) which has an area smaller than that of the light entrance surface; a fluorescent member (22) that includes an application surface (22a) to which the laser light emitted from the light collection member is applied and that mainly emits fluorescent light from the application surface; and a light projection member (23) that projects the fluorescent light. The light emission surface (21b) of the light collection member is arranged a predetermined distance from the application surface (22a) of the fluorescent member (22).

Anmelder

Firma

Sharp Kabushiki Kaisha

Land

🇯🇵 Japan

Fachgebiete