Patent ID: 6596986
Filing Date: 2003-07-22
Classification: H01L

Abstract:
A reflection sensor comprising:a light emitting element (31); a light receiving element (32) cooperative with the light emitting element; a first resin body (21) enclosing the light emitting element and including a first surface and a second surface away from the first surface; a second resin body (22) enclosing the light receiving element and including a third surface and a fourth surface away from the third surface; a third resin body (25) holding the first and the second resin bodies; a first pair of leads (5a, 5b) electrically connected to the light emitting element; a second pair of leads (5c, 5d) electrically connected to the light receiving element; wherein the third resin body is formed with a plurality of openings respectively wider than the first and the second leads (5a, 5b, 5c, 5d), wherein the first surface and the second surface of the first resin body and the third surface and the fourth surface of the second resin body are exposed to outside of the third resin body respectively in the openings; and wherein the first and the second resin bodies (21, 22) have a thermal expansion coefficient larger than that of the third resin body (25).