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公开(公告)号：US10139532B2
公开(公告)日：2018-11-27
申请号：US15568202
申请日：2015-07-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haishui Ye , Feng Yu , Tateoka Susumu
Abstract: A camera module includes a cover window, an infrared cut-off filter, and an anti-reflection coating. The anti-reflection coating is on at least one surface, through which light passes, of the optical protection window, or the anti-reflection coating is on at least one surface, through which light passes, of the infrared cut-off filter. The anti-reflection coating includes conical anti-reflection structures. A bottom diameter of the conical anti-reflection structure is 40 nm to 150 nm. A top diameter of the conical anti-reflection structure is 0% to 30% of the bottom diameter. A height of the conical anti-reflection structure is 150 nm to 300 nm. A spacing between two adjacent conical anti-reflection structures is ⅕ to ⅓ of a wavelength in a visible light band.
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公开(公告)号：US20180100957A1
公开(公告)日：2018-04-12
申请号：US15568202
申请日：2015-07-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haishui Ye , Feng Yu , Tateoka Susumu
CPC classification number: G02B5/208 , G02B1/11 , G02B1/118 , G02B5/0294 , H04N5/211 , H04N5/2176
Abstract: A camera module includes a cover window, an infrared cut-off filter, and an anti-reflection coating. The anti-reflection coating is on at least one surface, through which light passes, of the optical protection window, or the anti-reflection coating is on at least one surface, through which light passes, of the infrared cut-off filter. The anti-reflection coating includes conical anti-reflection structures. A bottom diameter of the conical anti-reflection structure is 40 nm to 150 nm. A top diameter of the conical anti-reflection structure is 0% to 30% of the bottom diameter. A height of the conical anti-reflection structure is 150 nm to 300 nm. A spacing between two adjacent conical anti-reflection structures is ⅕ to ⅓ of a wavelength in a visible light band
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