Patent ID: 6028592
Filing Date: 2000-02-22
Classification: G01S,G06F

Abstract:
A relative angle detecting device, comprising:a light receiving section for detecting light from a light source, the light receiving section generating a plurality of received light outputs;switch means for time-division switching and individual sequential selection of the received light outputs from a plurality of reception elements;detecting means for detecting the received light outputs received from said switch; anda CPU for calculating a relative position between said light source and said light receiving section from the individual received light outputs detected by said detecting means;wherein detection of each of received light outputs from the light receiving section is carried out by the detecting means and a common variable gain amplifier,wherein said CPU adds each of the received light outputs, andwherein the amount of received light from said light source is controlled in accordance with the added value,wherein the detecting means for detecting each of the received light outputs received from said switch comprises a common detecting means, andwherein the gain of said variable gain amplifier is controlled in accordance with a detection timing at said detecting means for each of the received light outputs.