Thin laser module
OwnerYun-Yuan Yehinventor
Life of this patent
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Abstract
A thin laser module comprises a casing having a light emitting window on one side; a circuit board installed in the casing for containing components; a laser chip installed on the circuit board for emitting a primary laser and a secondary laser; a photodiode (PD) packaged by surface mount technology and installed on the circuit board and disposed at a side of the laser chip for receiving the secondary laser and producing a current; a control circuit installed on the circuit board and coupled to the photodiode for receiving the current to execute an automatic power control; and a lens installed in the casing for receiving the primary laser emitted from the laser chip and modulating the primary laser into parallel beams and transmitting the beams out from the light emitting window.
Claims10
A thin laser module, comprising:
- a casing, having a light emitting window;
- a printed circuit board, installed in said casing for carrying a plurality of components;
- a laser chip, installed onto said printed circuit board for transmitting a primary laser and a secondary laser;
- a photodiode, being packaged by the surface mount technology and then installed on said printed circuit board and disposed on a side of said laser chip for receiving said secondary laser and producing a current;
- a control circuit, installed onto said circuit board and coupled to said photodiode for receiving said current to execute an automatic power control;
- and
- a lens, installed in said casing for receiving said primary laser emitted from said laser chip and adjusting said primary laser into parallel beams and emitting said parallel beams out from said light emitting window.
Dependencies are inferred from the claim text.