-
公开(公告)号：US11762158B2
公开(公告)日：2023-09-19
申请号：US17373538
申请日：2021-07-12
发明人： Piero Lovato
IPC分类号： G02B6/42
CPC分类号： G02B6/4262 , G02B6/4214
摘要： An optoelectronic device, e.g. of a photocell or light barrier, comprising an electrical-to-optical or optical-to-electrical transducer, and an optical tube assembly comprising an optical chamber, a first aperture proximal with respect to the transducer, and a second, distal aperture being formed in chamber wall. In at least one first half-section taken e.g. along optical axis, at least an intermediate portion of the chamber wall extending between a first and a second line has a local tangent at each point (P) oriented so that any stray light ray incoming from the boundary point of the first aperture in the opposite half-section would be so deviated at that point (P) as to impinge upon the chamber wall at an impingement point (Q) in said first halfsection and more distal than the distal line.
-
2.发明公开公开(公告)号：US20230305184A1
公开(公告)日：2023-09-28
申请号：US18191200
申请日：2023-03-28
IPC分类号： G01V8/22
CPC分类号： G01V8/22
摘要： An emitter and a receiver in a light barrier system are aligned by placing one or more retroreflective elements in a vicinity of the receiver such that a beam of visible light emitted by an optical alignment element impinges on a retroreflective element when the light beam emitted by the emitter impinges on the receiver. The optical alignment element is activated to emit a beam of visible light, and optical components of the system are adjusted so that the visible beam emitted by the optical alignment element impinges on, and is reflected by, the retroreflective element.
-
搜索结果
2 条记录 (耗时 0.011 秒)
