Title:
PROJECTION DISPLAY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/113226
Kind Code:
A1
Abstract:
A projection display system (10), comprising a light emitting device (110), a light splitting device (120), a first light modulator (131), a second light modulator (132), and a third light modulator (133). The light emitting device (110) is used for emitting a first light and second light in a time sequence. The light splitting device (120) is used for splitting the first light into a light of first wavelength range emitted along a first light path and a light of second wavelength range emitted along a second light path, and guiding at least part of the second light to be emitted along the first light path. The first light modulator (131) is used for modulating the light emitted along the first light path, and the second light modulator (132) is used for modulating the light emitted along the second light path; the light emitted after being modulated by the first light modulator (131) and the light emitted after being modulated by the second light modulator (132) are combined to obtain a third light emitted along a third light path. The third light modulator (133) is located on a light path between the light emitting device (110) and the light splitting device (120) and modulates the first light and the second light emitted by the light emitting device (110); or the third light modulator (133) is located on the third light path and modulates the third light. The projection display system improves imaging effect, reduces light loss, simplifies the light path for combining lights, and reduces design complexity.
Inventors:
LI YI (CN)
HU FEI (CN)
GUO ZUQIANG (CN)
HU FEI (CN)
GUO ZUQIANG (CN)
Application Number:
PCT/CN2017/089849
Publication Date:
June 28, 2018
Filing Date:
June 23, 2017
Export Citation:
Assignee:
APPOTRONICS CHINA CORP (CN)
International Classes:
G03B21/00
Foreign References:
| CN206321932U | 2017-07-11 | |||
| CN103713455A | 2014-04-09 | |||
| CN101063520A | 2007-10-31 | |||
| US20110109818A1 | 2011-05-12 | |||
| US20020057419A1 | 2002-05-16 |
Other References:
See also references of EP 3561593A4
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