公开(公告)号：US09584717B2

公开(公告)日：2017-02-28

申请号：US14950119

申请日：2015-11-24

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Ming-Huang Shih ,  Jau-Yu Chen ,  Hsing-Hung Chen

IPC: H04N5/232 ,  H04N5/225

CPC classification number: H04N5/23212 ,  H04N5/2253 ,  H04N5/2254

Abstract: A focusing method includes the steps of calculating a diameter difference between a first circle of confusion diameter and a second circle of confusion diameter which correspond respectively to first image data and second image data associated respectively with light energy of a first spectrum and light energy of a second spectrum, generating a control signal associated with a target image distance according to an initial image distance, the diameter difference, and a lookup table, driving movement of a lens module so as to change a distance between the lens module and an image sensor from the initial image distance into the target image distance according to the control signal.

Abstract translation: 聚焦方法包括以下步骤：计算混合直径的第一个圆圈和第二混合直径圆圈之间的直径差，分别对应于第一图像数据和分别与第一个光谱的光能和第一个光谱的光能相关的第二图像数据 第二光谱，根据初始图像距离，直径差和查找表产生与目标图像距离相关联的控制信号，驱动透镜模块的移动，以将透镜模块和图像传感器之间的距离改变为 根据控制信号将初始图像距离进入目标图像距离。