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|5013911||Optical sensor unit with sealed optical element and cable connector|
An optical sensor unit for detecting a predetermined object to be detected comprises an optical element, a connector for connection to a wiring cable of an external equipment, and a printed circuit board having a predetermined printed wiring thereon for c...
|4985636||Medium detecting system with automatic compensation for sensor variations|
In a medium detecting system having a plurality of optical sensors, each including a light-emitting element and a light-receiving element whose current varies with the amount of light received, and a load resistance unit provided in common for the sensors...