公开(公告)号：US20140225868A1

公开(公告)日：2014-08-14

申请号：US14040201

申请日：2013-09-27

Applicant: Pixart Imaging Inc.

Inventor： YU-HSIANG HUANG ,  CHUN-YI LU ,  TZUNG-MIN SU ,  CHIH-HSIN LIN ,  JIA-HONG HUANG

IPC: G06F3/042 ,  G02B13/14 ,  G02B13/18

CPC classification number: G02B13/18 ,  G02B19/0014 ,  G02B19/0061 ,  G06F3/0428

Abstract: An optical lens is configured in front of an image-capturing lens of an image-capturing device. A light-emitting unit of the image-capturing device emits a light beam. The optical lens includes a pair of peripheral compensation portions and a central diverging portion. Each peripheral compensation portion has a first convex surface and a first concave surface arranged opposite to the first convex surface. The central diverging portion is arranged between the peripheral compensation portions, and has a second concave surface and an oppositely arranged light incident surface. The second concave surface is arranged between the first convex surfaces. The light incident surface is arranged between the first concave surfaces. The optical axis of the light beam sequentially aligns with the light incident surface and the second concave surface. The light rays of the light beam pass through the first concave surface and the first convex surface in sequence.

Abstract translation: 光学透镜配置在图像拍摄装置的图像拍摄透镜的前方。 图像捕获装置的发光单元发射光束。 光学透镜包括一对外围补偿部分和中心发散部分。 每个外围补偿部分具有与第一凸面相对布置的第一凸面和第一凹面。 中心发散部分配置在周边补偿部之间，具有第二凹面和相对配置的光入射面。 第二凹面设置在第一凸面之间。 光入射面设置在第一凹面之间。 光束的光轴顺序地与光入射面和第二凹面对准。 光束的光线依次穿过第一凹面和第一凸面。