Photoelectric displacement device based on Fresnel lens

• Main Authors: YUAN YINGHUA, JIANG CHUANSHENG, LI XUESHENG
• Format: Patent
• Language: Chinese; English
• Published: 24.07.2020
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; TESTING

The invention discloses a photoelectric displacement device based on a Fresnel lens, belongs to the technical field of optical measurement, and aims to solve the technical problems of high processingcost, complex structure, application scene limitation and the like caused by the characteristics of an optical lens since a photoelectric displacement device in the prior art adopts a lens or a lens group to realize collimation of light rays. The device comprises a point light source, the Fresnel lens, a linear array CCD and a data acquisition and processing circuit, wherein the linear array CCD is electrically connected with the data acquisition and processing circuit; and divergent light beams emitted by the point light source are collimated into parallel light beams through the Fresnel lens, the parallel light beams irradiate the linear array CCD, and an irradiation path between the Fresnel lens and the linear array CCD is used for arranging a measured object or a marker of the measuredobject. 本发明公开了光学测量技术领域的一种