Light source unit incorporating light emitting device and optica

Details Light source unit incorporating light emitting device and optica Light source unit incorporating light emitting device and optica

1993-07-20

1995-05-02

Ben, Loha

Optical: systems and elements

Lens

With support

342258, G02B 702

Patent

active

054125090

ABSTRACT:
A semiconductor laser is inserted into a first hole of a fixing member. An optical system including a cylindrical lens barrel and a lens attached inside the lens barrel is inserted into a second hole in order to direct a light beam emitted from the semiconductor laser to a predetermined position. The first and second holes are formed to be opposite to each other and are arranged on the same axis. The semiconductor laser and the optical system inserted into the first and second holes, respectively, so as to be partly exposed are fixed by laser welding at entrances of the first and second holes. The fixing member is provided with a third hole vertically penetrating the second hole. An adhesive is filled into the third hole. Further, an adhesive is applied onto laser welding points at the entrance of the first hole.

REFERENCES:
patent: 4821051 (1989-04-01), Hediger
patent: 5032960 (1991-07-01), Katok
patent: 5191481 (1993-03-01), Takizawa et al.
patent: 5271079 (1993-12-01), Levinson

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