| 摘要 |
A duplex focusing device is installed a duplex light transceiver module for transmitting light signals. The duplex focusing device comprises a ball lens assembly and a body. The ball lens assembly has a first lens and a second lens both being symmetrical half ball matching to each other. A layer of wavelength-division medium is 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. The body serves for receiving and fixing the ball lens. The body is formed to cause that both orientations of the first lens and the second lens are adjustable with respect to the body.
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