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Patent Searching and Data


Title:
OPTICAL ENGINE SYSTEM AND PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/095762
Kind Code:
A1
Abstract:
An optical engine system (30), comprising a light source, a polarizing light-splitting device (200) and a light combining element (300), wherein the light source comprises a red light-emitting element (110), a green light-emitting element (120) and a blue light-emitting element (130), the red light-emitting element (110) being excited to generate red light, the green light-emitting element (120) being excited to generate green light, and the blue light-emitting element (130) being excited to generate blue light; the polarizing light-splitting device (200) is used for receiving the blue light emitted by the blue light-emitting element (130), and splitting the blue light into first polarized light and second polarized light; and the second polarized light is guided to the red light-emitting element (110) or the green light-emitting element (120), such that same is excited to generate some red light or some green light; and the light combining element (300) is used for combining the red light, the green light and the first polarized light and then emitting same. Blue light is split into different polarization states, such that blue light in some polarization states forms some light of other colors, thereby improving the utilization rate of the blue light, and reducing the optical energy loss. In addition, further provided is a projection device.

Inventors:
FANG YUANRONG (CN)
HU FEI (CN)
ZHANG CUIPING (CN)
LI YI (CN)
Application Number:
PCT/CN2021/126556
Publication Date:
May 12, 2022
Filing Date:
October 27, 2021
Export Citation:
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Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/20
Foreign References:
CN110632815A2019-12-31
CN110133949A2019-08-16
CN102566237A2012-07-11
US6419362B12002-07-16
CN101963744A2011-02-02
KR20110103109A2011-09-20
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