1. Confirming a small insert at an assembly position
An assembly fixture can present a small opaque insert close to the sensing face, with a farther structure beyond the intended detection position. The fixed background-suppression configuration provides the optical boundary without a range-adjustment step. External sequence logic reads the light-switching output after placement, with setup verifying target coverage, remission and separation from the background.
Problem Solved
A fixed near-target condition provides external assembly logic with an insert-presence reference, helping distinguish the presented component from a farther structure behind the fixture.
Insert presentation
Fixed range
Background suppression
2. Counting separated tabs on a moving component carrier
A moving carrier can bring separated opaque tabs through the near sensing location while the farther carrier structure remains outside the intended detection zone. Each tab produces a light-switching event for an external counter. The 1,200 Hz rating and response below 0.4 ms provide the electrical timing basis, with actual tab width, reflectance, spacing and motion verified during setup.
Problem Solved
Separated foreground tabs produce discrete electrical passage events, helping external counting logic track carrier features while rejecting a suitably spaced background behind the sensing location.
Tab counting
1,200 Hz
Light switching
3. Monitoring continuity of an opaque strip at a feed point
A strip feeder can aim the sensor at an opaque material face held in a defined near sensing position. When the strip ends or breaks, the farther structure beyond the strip is suppressed under the installed geometry. External control logic evaluates a sustained change in the output state before issuing a material-loss or replenishment request for the feeding process.
Problem Solved
Loss of the near material face creates a sustained switching change for external feeder logic, helping identify a broken or exhausted strip at the monitored feed point.
Strip continuity
Material-loss condition
Fixed optical boundary
