The options when specifying sensors for long-range object detection or positioning usually boil down to two alternatives: optical sensors using either infrared or visible-red light and ultrasonic.

Pepperl+Fuchs introduces the R305 retroreflective area sensor, designed for detecting thin and irregularly shaped objects from a height of 2 mm. Unlike traditional single-point retroreflective sensors ...

Banner Engineering Corp. in Minneapolis is offering the World-Beam QS18LD laser diffuse and QS18LLP laser retroreflective sensors. The devices sense with visible class 1 lasers, tightly collimated ...

Fiber optic proximity sensors are used to detect the proximity of target objects using light. Light is supplied and returned via fiber optic cables. Fiber optic cables can fit in small spaces, are not ...

Photoelectric Sensors detect objects, changes in surface conditions, and other items through a variety of optical properties. A Photoelectric Sensor consists primarily of an Emitter for emitting light ...

Here is a modern photoelectric sensor scheme to limit depth of perception. Fig. 1. Triangulation of light from the emitter, E, to the target, to the receiver, R, for a background suppression (BGS) ...

The usual way of detecting objects of varying shapes, heights, or positions has been through the use of an array of single-beam photoelectric sensors or a thru-beam light grid: a photoelectric array ...