公开(公告)号：US20170038913A1

公开(公告)日：2017-02-09

申请号：US15297097

申请日：2016-10-18

Applicant: PixArt Imaging Inc.

Inventor： Hung-Ching Lai ,  Hui-Hsuan Chen ,  Chi-Chieh Liao

IPC: G06F3/042 ,  G02B5/04

CPC classification number: G06F3/0428 ,  G02B5/04 ,  G02B5/045 ,  G06F3/0418 ,  G06F3/042 ,  G06F3/0421

Abstract: A light source assembly for an optical touch device includes a linear light source and a plurality of prism pillars. The linear light source includes a lighting surface having a first side along a first direction and a second side along a second direction for emitting light. The first side is longer than the second side, and the first direction intersects the second direction. The prism pillars are disposed adjacent to the lighting surface and arranged along the first direction. Each of the prism pillars includes a first surface adjacent to the lighting surface and two reflection surfaces tilted toward each other for reflecting the light. The first surface is connected to the two reflection surfaces and parallel to the lighting surface. Each of the first surfaces is for receiving the emitted light, and each of the first surfaces and one of the reflection surfaces form a first angle.

Abstract translation: 用于光学触摸装置的光源组件包括线性光源和多个棱镜柱。 线性光源包括具有沿着第一方向的第一侧和沿着第二方向的用于发光的第二侧的照明表面。 第一侧比第二侧长，第一方向与第二方向相交。 棱镜柱设置成与照明表面相邻并且沿第一方向布置。 每个棱镜柱包括与照明表面相邻的第一表面和朝向彼此倾斜以反射光的两个反射表面。 第一表面连接到两个反射表面并平行于照明表面。 每个第一表面用于接收发射的光，并且每个第一表面和一个反射表面形成第一角度。