Optoelectronic arrangement for the detection of relative movements or relative positions of two objects

摘要

A pair of three light emitting diodes (LEDs) (40,60) and three position sensitive infrared detectors (62) are arranged in two different parallel planes of a cylindrical printed board (80), respectively. Independent claims are also included for the following: (1) force and moment sensor; and (2) personal computer (PC) keyboard.