Hangzhou Hikvision Digital Technology Co., Ltd.

Youhui Xu

Yang Li

Peng Xu

Zhan Ye

Caisheng Yan

Yao Liu

A transparent cover of an optical camera system comprises a curved sidewall portion having an outer contour formed by the rotation of a preset continuous curve. The preset continuous curve comprises a first curve segment and a second curve segment, each having a curvature no more than a first preset value, wherein the first back focus offset of a curved surface corresponding to the first curve segment does not exceed the second preset value, and a second back focus offset of a curved surface corresponding to the second curve segment does not exceed a third preset value. A first line segment is formed by connecting an end point of the preset continuous curve with a center of a circle circumscribing edges of a camera, and an included angle between the first line segment and a boundary line between the first and second curve segments is greater than 0.

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Zhejiang, China

Youhui Xu