公开(公告)号：US20240273320A1

公开(公告)日：2024-08-15

申请号：US18409075

申请日：2024-01-10

申请人： KEYENCE CORPORATION

发明人： Yuta Omura ,  Kosuke Yanai ,  Yoshiyuki Fukumoto

IPC分类号： G06K7/10

CPC分类号： G06K7/10742

摘要： A light source is suppressed from being reflected on a workpiece surface of a specular workpiece. A code reading device generates a code image by receiving light specularly reflected from a specular workpiece surface of light emitted from a diffuser and diffusing and reflecting light emitted to a portion corresponding to a code. A position and an angle of the diffuser are fixed with respect to a camera such that the specularly reflected light from the workpiece surface is received by the camera in a state where the camera is in focus on the workpiece surface, and the light source emits the light from the back of a rear end of the diffuser toward the diffuser such that the light source is not reflected on the camera when the camera receives the specularly reflected light.