Liwei Quan

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Zhongshan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Optical system and projection device
- Patent number 12,181,646
- Issue date Dec 31, 2024
- UNION OPTECH CO., LTD.
- Liwei Quan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Ultra-short focus projecting optical system and projection device
- Patent number 11,822,062
- Issue date Nov 21, 2023
- UNION OPTECH CO., LTD.
- Yuancai Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical system and projection device
- Patent number 11,561,462
- Issue date Jan 24, 2023
- UNION OPTECH CO., LTD.
- Liwei Quan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
ULTRA-SHORT FOCUS PROJECTING OPTICAL SYSTEM AND PROJECTION DEVICE
- Publication number 20230043860
- Publication date Feb 9, 2023
- Union Optech Co., Ltd.
- Yuancai LI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
OPTICAL SYSTEM AND PROJECTION DEVICE
- Publication number 20220221698
- Publication date Jul 14, 2022
- Union Optech Co., Ltd.
- Liwei QUAN
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
OPTICAL SYSTEM AND PROJECTION DEVICE
- Publication number 20220057704
- Publication date Feb 24, 2022
- Union Optech Co., Ltd.
- Liwei Quan
- G02 - OPTICS