Integrated assembly comprising vertical cavity surface-emitting laser array with Fresnel microlenses
First Claim
1. An integrated laser-lens assembly comprising an array of vertical cavity surface-emitting lasers, each of said lasers comprising an active region sandwiched between a first mirror individual to each of said lasers and a second mirror common to all of said lasers and individual electrical contacts for each of said regions,a substrate having a high transmissivity at the wavelengths emitted by said lasers extending across said second mirror and integrally formed therewith, anda plurality of planar Fresnel microlenses formed in the outer surface of said substrate, each of said microlenses being in alignment with the individual electrical contact of one of said vertical cavity surface-emitting lasers and comprising means defining concentric zones.
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Accused Products
Abstract
An array of Fresnel microlenses is fabricated directly on the planar output surface of an array of vertical cavity surface-emitting lasers. A compact integrated assembly comprising precisely aligned lasers and lenses is thereby provided for focusing (or collimating) the output beams of the lasers.
166 Citations
6 Claims
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1. An integrated laser-lens assembly comprising an array of vertical cavity surface-emitting lasers, each of said lasers comprising an active region sandwiched between a first mirror individual to each of said lasers and a second mirror common to all of said lasers and individual electrical contacts for each of said regions,
a substrate having a high transmissivity at the wavelengths emitted by said lasers extending across said second mirror and integrally formed therewith, and a plurality of planar Fresnel microlenses formed in the outer surface of said substrate, each of said microlenses being in alignment with the individual electrical contact of one of said vertical cavity surface-emitting lasers and comprising means defining concentric zones.
Specification