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US 5,844,723 AGranted
Laser diode assembly including a carrier-mounted crossed pair of cylindrical microlenses
AssigneeBlue Sky Research
InventorJames J. Snyder
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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.
Claims8
An optical assembly comprising:
- a substrate having mounted thereon a laser source;
- a first microlens disposed and passively aligned on said substrate;
- and
- a second microlens further disposed and passively aligned on said substrate, said second microlens disposed substantially orthogonally to said first microlens;
- the planar surfaces of said first and second microlenses being oriented toward said laser source.
2 more elements
Dependencies are inferred from the claim text.