This invention realizes a detection system which serves as a displacement measurement apparatus for optically detecting a relative position, improves the use efficiency of a light amount, and is resistant to mechanical variations. More specifically, in an optical sensor having a light source, a reflector for reflecting a divergent light beam from the light source, and a light-receiving portion for receiving a reflected light beam from the reflector. The reflector has an optical characteristic that a divergent light beam from the light source is wavefront-split into a plurality of beams and the respective split light beams are overlaid at a predetermined position.

 
Web www.patentalert.com

< Polarization state conversion in optically active spectroscopy

< Device for a transparent pipe intended for optical counting and measuring

> Index tunable thin film interference coatings

> Color reference system for display monitor

~ 00227