Lichtquellenvorrichtung und Projektor

Details

Veröffentlichungs-Nr.

EP3599490

Aktenzeichen

EP19188312

Anmeldetag

25. Juli 2019

Veröffentlichung

24. März 2021

Erteilung

24. März 2021

Rechtsraum

EP

IPC

G02B6/00F21V8/00F21K9/61// F21Y113/10F21Y115/10G03B21/20G03B33/10

Abstract

A light source device (2) according to the present disclosure includes a light source (53) that emits first light in a first wavelength band, a light guide section (51) that guides partial light of the first light, a wavelength conversion section (58) including a phosphor, which other partial light of the first light, and which converts the other partial light into second light in a second wavelength band. A first side surface (51c1) of the light guide section (51) and a second side surface (58c1) of the wavelength conversion section (58) are opposed to each other, and the first side surface (51c1) is provided with a diffraction grating (51f). The partial light enters the light guide section (51) from the first side surface via the diffraction grating (51f), and the other partial light enters the wavelength conversion section (58) from the second side surface (58c3). The partial light and the second light are emitted in one of a normal direction of the first end surface (51a) of the light guide section (51) and a normal direction of the third end surface (58a) of the wavelength conversion section (58).

Anmelder

Firma

Seiko Epson Corporation

Land

🇯🇵 Japan

Fachgebiete