Title:
LIGHT SOURCE SYSTEM AND PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/024213
Kind Code:
A1
Abstract:
A light source system (10) and a projection device. The light source system (10) comprises: an excitation light source (11), an optical path changing device (12), a plurality of wavelength conversion devices, and a control device (16). The excitation light source (11) is used to emit an excitation light. The optical path changing device (12) is capable of doing a reciprocating motion between a plurality of preconfigured positions, and is used for receiving and changing an outgoing path of the excitation light so that the excitation light is sent out selectively along one of a plurality of preconfigured optical paths (171-173). The plurality of wavelength conversion devices are disposed on the plurality of preconfigured optical paths (171-173) respectively, for absorbing the excitation light and generating excited lights of different colors. The control device (16) is used to change the position of the optical path changing device (12) according to image data of an image to be displayed and to control the dwell time of the optical path changing device (12) at the various preconfigured positions, so as to adjust a light emitting time sequence of the excited lights of different colors and the proportion of a light emitting period of the excited lights of different colors within the time of one-frame image. The light source system (10) is capable of dynamically adjusting the ratio of the light emitting period of various primary color lights to improve the utilization of light energy, thereby reducing energy consumption.
Inventors:
HU FEI (CN)
GUO ZUQIANG (CN)
LI YI (CN)
GUO ZUQIANG (CN)
LI YI (CN)
Application Number:
PCT/CN2017/103713
Publication Date:
February 07, 2019
Filing Date:
September 27, 2017
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/20
Foreign References:
| CN103186024A | 2013-07-03 | |||
| CN106855679A | 2017-06-16 | |||
| CN105676577A | 2016-06-15 | |||
| CN104728777A | 2015-06-24 | |||
| US20170115479A1 | 2017-04-27 | |||
| JP2003295318A | 2003-10-15 |
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