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Hangzhou, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Zoom lens and optical device having the same
Patent number
11,947,091
Issue date
Apr 2, 2024
ZHEJIANG DAHUA TECHNOLOGY CO., LTD
Kai Liu
G02 - OPTICS
Information
Patent Grant
Lens system and imaging device
Patent number
11,204,488
Issue date
Dec 21, 2021
ZHEJIANG DAHUA TECHNOLOGY CO., LTD
Changtao Hu
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
ZOOM LENS AND OPTICAL DEVICE HAVING THE SAME
Publication number
20220082806
Publication date
Mar 17, 2022
Zhejiang Dahua Technology CO., LTD.
Kai LIU
G02 - OPTICS
Information
Patent Application
ZOOM LENS AND OPTICAL DEVICE HAVING THE SAME
Publication number
20210215917
Publication date
Jul 15, 2021
Zhejiang Dahua Technology CO., LTD.
Kai LIU
G02 - OPTICS
Information
Patent Application
LENS SYSTEM AND IMAGING DEVICE
Publication number
20200201006
Publication date
Jun 25, 2020
Zhejiang Dahua Technology CO., LTD.
Changtao HU
G02 - OPTICS