Laser modules and methods of manufacturing same

Details Laser modules and methods of manufacturing same Laser modules and methods of manufacturing same

1997-09-15

1999-05-18

Healy, Brian

Coherent light generators

Particular resonant cavity

Specified cavity component

372 43, 372 50, 372108, H01S3/08

Patent

active

059057513

ABSTRACT:
A method of manufacturing a laser module is provided, which includes the steps of providing a one-piece cylindrical housing having a bore, a front window and a rear opening, securing a lens piece in the bore adjacent the front window, introducing a laser diode into the bore through the rear opening, applying a force to the laser diode to insert the laser diode into the bore while simultaneously focusing the lens, and ceasing the application of force when the lens has been accurately focused. The present invention also provides a method of focusing the lens, which includes the steps of passing a laser beam from the laser diode through the lens, splitting the beam that has passed through the lens into separate first and second beams, directing the first beam at a first light receiving device, and directing the second beam at a second light receiving device, with respective dots being created at the first and second light receiving devices, and varying the distance between the lens and the laser diode until the dots received at the first and second light receiving devices have the same size.

REFERENCES:
patent: 4498737 (1985-02-01), Doggett
patent: 4923281 (1990-05-01), Krichever et al.
patent: 5111476 (1992-05-01), Hollenbeck et al.
patent: 5381438 (1995-01-01), Guo et al.
patent: 5408493 (1995-04-01), Aoki
patent: 5561684 (1996-10-01), Martin
patent: 5838703 (1998-11-01), Lebby et al.

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