公开(公告)号：US10393918B2

公开(公告)日：2019-08-27

申请号：US15472068

申请日：2017-03-28

Applicant: Banner Engineering Corp.

Inventor： Eric Lindmark ,  Paul D. Bratton ,  Dennis John Smith ,  Neal A. Schumacher

IPC: G01V8/22

Abstract: Apparatus and associated methods relate to a photoelectric sensor system with a primary photo-detector to receive an on-axis return reflected by a retro-reflective target, and a monitor photo-detector to detect off-axis light indicative of a diffuse reflective object blocking the optical path between an emitter and the retro-reflective target. In an illustrative example, the optical path may include a coaxial transceiver module that includes a beam splitter mirror to redirect the optical path. In some embodiments, a bifurcated lens may provide, for example, a lateral offset of the emitter axis through one lens, and the return axis through an adjacent parallel lens. The second photo-detector may provide, for example, an array of one or more detection surfaces to detect off-axis light associated with a diffuse reflective object, such as a white card, for example.

公开(公告)号：US20180284321A1

公开(公告)日：2018-10-04

申请号：US15472068

申请日：2017-03-28

Applicant: Banner Engineering Corp.

Inventor： Eric Lindmark ,  Paul D. Bratton ,  Dennis John Smith ,  Neal A. Schumacher

IPC: G01V8/22

CPC classification number: G01V8/22

Abstract: Apparatus and associated methods relate to a photoelectric sensor system with a primary photo-detector to receive an on-axis return reflected by a retro-reflective target, and a monitor photo-detector to detect off-axis light indicative of a diffuse reflective object blocking the optical path between an emitter and the retro-reflective target. In an illustrative example, the optical path may include a coaxial transceiver module that includes a beam splitter mirror to redirect the optical path. In some embodiments, a bifurcated lens may provide, for example, a lateral offset of the emitter axis through one lens, and the return axis through an adjacent parallel lens. The second photo-detector may provide, for example, an array of one or more detection surfaces to detect off-axis light associated with a diffuse reflective object, such as a white card, for example.

公开(公告)号：US20190331829A1

公开(公告)日：2019-10-31

申请号：US16381804

申请日：2019-04-11

Applicant: Banner Engineering Corp.

Inventor： Eric Lindmark ,  Paul D. Bratton ,  Dennis John Smith ,  Neal A. Schumacher

IPC: G01V8/22

Abstract: Apparatus and associated methods relate to a photoelectric sensor system with a primary photo-detector to receive an on-axis return reflected by a retro-reflective target, and a monitor photo-detector to detect off-axis light indicative of a diffuse reflective object blocking the optical path between an emitter and the retro-reflective target. In an illustrative example, the optical path may include a coaxial transceiver module that includes a beam splitter mirror to redirect the optical path. In some embodiments, a bifurcated lens may provide, for example, a lateral offset of the emitter axis through one lens, and the return axis through an adjacent parallel lens. The second photo-detector may provide, for example, an array of one or more detection surfaces to detect off-axis light associated with a diffuse reflective object, such as a white card, for example.