Laser diode assembly including a carrier-mounted crossed pair of cylindrical microlenses
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United States of America Patent
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Jul 11, 2000
Issued Date -
N/A
app pub date -
Dec 1, 1998
filing date -
Apr 11, 1997
priority date (Note) -
Expired
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Abstract
Laser diode/cylindrical microlens assembly including a crossed-pair of passively aligned cylindrical microlenses attached to a substrate on which is mounted a laser diode chip. The microlenses are mounted in an 'aplanatic' configuration with their flat surfaces facing the emitting facet of the diode, which arrangement provides for passive alignment and possible automated mounting, but requires no additional lenses for astigmatism correction. The crossed pair of lenses can collimate or focus the laser diode beam, for example focusing into a single mode fiber.
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