Patent ID: 6600167
Filing Date: 2003-07-29
Classification: G01N,G01V

Abstract:
An optical sensor comprising:a light-emitting element arranged on a first side of a transfer path along which a sheet to be discerned as to its type is moved; a first light-receiving element arranged on a second side of the transfer path for detecting light which passes through the sheet, the second side being opposite to the first side; a second light-receiving element arranged on the first side of the transfer path for detecting part of light reflected on the sheet; a third light-receiving element arranged on the first side of the transfer path for detecting part of light reflected on the sheet; and a common resin casing accommodating the light-emitting element, the second light-receiving element and the third light-receiving element; wherein the light-emitting element, the second light-receiving element and the third light-receiving element are equally oriented in a same direction; wherein the resin casing is provided with a plurality of lead terminals projecting out of the resin casing.