LIGHT SOURCE DEVICE - OLYMPUS CORP

Title:

LIGHT SOURCE DEVICE

Document Type and Number:

WIPO Patent Application WO/2013/015357

Kind Code:

A1

Abstract:

This light source device is provided with: a first excitation light source (10) which emits first excitation light having a first wavelength range; a second excitation light source (12) which emits second excitation light having a second wavelength range that is different from the first wavelength range; a first phosphor (22) which emits first wavelength converted light upon absorption of the first excitation light; and a second phosphor (24) which emits second wavelength converted light upon absorption of the second excitation light. The quantities of light of the first and second excitation light sources can be independently set, and the first and second excitation light sources can emit light at the same time. The spectrum shape of first emitted light that is emitted when the first and second phosphors are irradiated with the first excitation light and the spectrum shape of second emitted light that is emitted when the first and second phosphors are irradiated with the second excitation light are different from each other, and the first and second phosphors are both arranged within a common irradiation region of the first and second excitation light.

Inventors:

TAMURA KAZUAKI (JP)
YAMAMOTO EIJI (JP)
ITO TAKESHI (JP)

Application Number:

PCT/JP2012/068960

Publication Date:

January 31, 2013

Filing Date:

July 26, 2012

Export Citation:

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Assignee:

OLYMPUS CORP (JP)
TAMURA KAZUAKI (JP)
YAMAMOTO EIJI (JP)
ITO TAKESHI (JP)

International Classes:

F21V8/00; F21V9/08; H01S5/00; H01S5/022; F21Y101/02

Foreign References:

JP2009277734A	2009-11-26
JP2007258019A	2007-10-04
JP2004071357A	2004-03-04
US7433115B2	2008-10-07

Other References: