公开(公告)号：US20170045812A1

公开(公告)日：2017-02-16

申请号：US14826759

申请日：2015-08-14

Applicant: Young Optics Inc.

Inventor： S-Wei CHEN ,  Wan-Chang FAN ,  Yung-Fu CHIU

IPC: G03B21/53 ,  G02B7/02 ,  G02B13/00 ,  G02B7/09

CPC classification number: G03B21/53 ,  G02B7/022 ,  G02B7/08 ,  G02B7/09 ,  G02B7/365 ,  G02B13/001 ,  G03B21/142 ,  H04N9/317 ,  H04N9/3194

Abstract: An auto-focus projection system includes a light valve, a projecting lens, a camera module, a processing circuitry, and a focusing adjustment assembly. The light valve converts an illumination beam into an image beam, and the projection lens projects the image beam. The projection lens forms different images with respective sharpness values at different focusing positions The camera module captures the different images and converting the different images into electrical signals. The processing circuitry receives the electrical signals and compares the sharpness values to generate a control signal. The focus adjustment assembly receives the control signal and moves the projection lens according to the control signal.

Abstract translation: 自动对焦投影系统包括光阀，投影透镜，相机模块，处理电路和聚焦调节组件。 光阀将照明光束转换为图像光束，并且投影透镜投影图像光束。 投影透镜在不同的聚焦位置处形成具有相应锐度值的不同图像。相机模块捕获不同的图像并将不同的图像转换成电信号。 处理电路接收电信号并比较清晰度值以产生控制信号。 聚焦调整组件接收控制信号并根据控制信号移动投影透镜。