Light sensor with built in pulse driver circuit and sync detector. Useful as a wide-angle proximity detector or for non-contact bump sensing.

The pulse driver modulates the output of an external LED (not included). The LED will illuminate the target with modulated light; reflected light in sync with the output is detected by the S6986, making detection relatively insensitive to ambient lighting.

Datasheet
Hamamatsu s6986 Proximity Detector (.pdf 228 Kb)