Laser diode/lens assembly
First Claim
1. A laser diode/lens assembly, comprising:
- a laser diode;
a housing having an outside surface, said laser diode being disposed inside said housing and being fixed with respect to said housing;
a lens disposed with respect to said housing such that a first beam of laser radiation emitted from said laser diode passes through said lens to form a second beam of laser radiation with altered divergence; and
an adhesive securing said lens to a portion of said outside surface of said housing, said adhesive contacting said lens and contacting said outside surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A laser diode lens assembly wherein a lens or lens assembly is immovably adhered to a housing of a laser diode package. The laser diode package may be a metal can style package having a substantially transparent window portion through which laser radiation is emitted when a laser diode inside the housing is supplied with current. The lens or lens assembly may be immovably fixed to an outer surface of this window so that a central axis of a beam of laser radiation emerging from the lens or lens assembly has a desired spatial relationship with a reference surface of the housing. An adhesive such as an epoxy adhesive which is cured under exposure to ultraviolet radiation may be used to freeze the lens or lens assembly in place to the window when the lens is correctly positioned.
121 Citations
17 Claims
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1. A laser diode/lens assembly, comprising:
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a laser diode; a housing having an outside surface, said laser diode being disposed inside said housing and being fixed with respect to said housing; a lens disposed with respect to said housing such that a first beam of laser radiation emitted from said laser diode passes through said lens to form a second beam of laser radiation with altered divergence; and an adhesive securing said lens to a portion of said outside surface of said housing, said adhesive contacting said lens and contacting said outside surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An assembly, comprising:
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a laser diode; and means for fixing a lens with respect to said laser diode such that a beam of laser radiation emitted from said laser diode passes through said lens to exit said lens substantially collimated, said lens being disposed approximately 0 to 4 mm from said laser diode, said lens being glued outside an hermetically sealed volume containing said laser diode. - View Dependent Claims (14)
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- 15. The assembly of claim 15, wherein said beam of laser radiation passes through a volume of glue and then passes through said lens, said volume of glue contacting an hermetically sealed housing containing said laser diode and also contacting said lens.
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17. An assembly, comprising:
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a laser diode; a housing having an outside surface, said laser diode being disposed inside said housing and being fixed with respect to said housing; a lens assembly disposed with respect to said housing such that a first beam of laser radiation emitted from said laser diode passes through said lens assembly to form a second beam of laser radiation with altered divergence; and a volume of adhesive securing said lens assembly to a portion of said outside surface of said housing, said volume of adhesive contacting both said lens assembly and said outside surface, a separation of less than approximately 4 mm existing between said laser diode and said lens assembly.
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Specification