Patent ID: 6827506
Filing Date: 2004-12-07
Classification: G02B

Abstract:
A duplex focusing device having a duplex light transceiver module for the transmission of light signals, the duplex focusing device comprising:a ball lens assembly having a first lens and a second lens both being symmetrical half ball matching to each other, a layer of wavelength-division medium being placed between the first and second lens to ensure that light transmitted from a laser diode will transmit through the ball lens assembly, thereby, the light transmitting into the ball lens assembly will have a part being reflected by the second lens; a body for receiving and fixing the ball lens, the body being formed by a front part and a rear part, each of the front part and the rear part having an annular rim and a correspondingly annular protrusion linked to said annular rim, the annular protrusion being formed a notched groove to accommodate ball lens assembly so that both orientations of the first lens and the second lens are adjustable with respect to the body.