Crystal coating optical low pass filter and manufacturing method thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10324241
APP PUB NO 20170371080A1
SERIAL NO

15682556

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Abstract

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The present invention discloses a crystal coating optical low pass filter, which includes a UV-IR cut-off film, a crystal plate, an ink layer, and an AR film. The UV-IR cut-off film can be replaced with an IR film. By coating the crystal plate with ink having infrared absorbing effect to form an ink layer, the present invention possesses both the birefringence characteristic of the crystal and the effect similar to infrared absorbing glass. Compared with the traditional OLPF using infrared absorbing glass, the thickness of the product is reduced and the situation that the infrared absorb glass is fragile and has a poor resistance to drop is significantly improved. The present invention can be used in smartphones, digital cameras, in-vehicle cameras, security cameras and has a large space of marketing.

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Patent Owner(s)

Patent OwnerAddress
ZHEJIANG MDK MODERN OPTICAL CO LTDTECHNOLOGY AVENUE IUR INDUSTRIAL PARK WENLING TAIZHOU ZHEJIANG CHINA WENLING

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ge, Wenqin Wenling, CN 1 0
Ge, Wenzhi Hangzhou, CN 2 0
Shan, Leilei Shenzhen, CN 1 0
Wang, Yiwei Suzhou, CN 9 4
Yajima, Hirokazu Tokyo, JP 4 6

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