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Patent Searching and Data


Title:
LIGHT SOURCE DEVICE, PROJECTOR, AND CHROMATICITY ADJUSTMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2019/102596
Kind Code:
A1
Abstract:
The present invention provides a light source device, a projector, and a chromaticity adjustment method capable of preventing the emitted light from changing color even with long-term use. A light source device 1 according to the present invention comprises: an excitation light source 101 for emitting excitation light 120; a phosphor wheel 105 irradiated with the excitation light 120 for converting part of the excitation light 120 to fluorescent light and emitting mixed-color light 121 including the fluorescent light and the rest of the excitation light 120; a motor 112 for rotating the phosphor wheel 105; and an adjustment unit 106 for adjusting the speed of the motor so that the chromaticity of the mixed-color light 121 emitted from the phosphor wheel 105 has a prescribed value.

Inventors:
TAKAHASHI Isao (4-28, Mita 1-chome, Minato-k, Tokyo 73, 〒1080073, JP)
Application Number:
JP2017/042264
Publication Date:
May 31, 2019
Filing Date:
November 24, 2017
Export Citation:
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Assignee:
NEC DISPLAY SOLUTIONS, LTD. (4-28, Mita 1-chome Minato-k, Tokyo 73, 〒1080073, JP)
International Classes:
G03B21/14; F21V9/00; G03B21/00
Domestic Patent References:
WO2016051537A12016-04-07
WO2016009533A12016-01-21
Foreign References:
JP2016224115A2016-12-28
JP2015129783A2015-07-16
JP2015138045A2015-07-30
JP2017161641A2017-09-14
JP2016161738A2016-09-05
Attorney, Agent or Firm:
MIYAZAKI Teruo et al. (3F Tamachi Square, 26-24 Shiba 5-chome, Minato-k, Tokyo 14, 〒1080014, JP)
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