Patent ID: 7181144
Filing Date: 2007-02-20
Classification: H01L,H04B

Abstract:
1. A transceiver system for sending and receiving infrared signals, comprising: a circuit structure defined by a front side and a back side; at least one infrared emitting device located on said front side; at least one infrared detecting device also located on said front side; a transceiver circuit device located on said front side, said infrared detecting device further comprising a front side and a back side, said infrared detecting device back side aligned to face said front side of said circuit structure, said infrared emitting device further comprising a back side, said infrared emitting device back side aligned to face said infrared detecting device front side, whereby said infrared emitting device and said infrared detection device form an integrated infrared emitting and infrared detection device, said integrated infrared emitting/infrared detection device is located on said front side of said transceiver circuit device to form a transceiver/infrared emitting/infrared detection device stack; a primary lens element providing an optical path, said primary lens element and said transceiver/infrared emitting/infrared detection device stack cooperatively located such that said transceiver/infrared emitting/infrared detection device stack is aligned with said optical path; and a secondary lens unit separated by a distance from said primary lens element and aligned along said optical path, the primary lens element located between the secondary lens unit and the at least one infrared emitting device, the secondary lens unit causing a ray to be refracted such that the angle of the ray with respect to the secondary lens unit is modified by passing through the secondary lens unit.