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US 6,888,679 B2Granted
Laser diode bar integrator/reimager
AssigneeMems Optical, Inc.
InventorDaniel M. Brown
Life of this patent
Estimating the term…
Abstract
A beam integrator system, which integrates multiple beams into fewer beams of increased intensity by using a combination of optical elements and lenses.
Claims16
A beam integrator comprising:
- a laser diode array, where the diode array contains a plurality of emitters;
- and
- an optical array, where the optical array comprises a plurality of optical array elements, each optical array element associated with an emitter, where each emitter emits an associated beam, a plurality of beams comprised of a plurality of associated beams, where the optical array integrates the plurality of beams into fewer beams of increased relative intensity.
A beam integrator system comprising:
- a laser diode array comprising, a plurality of emitters which are positioned in an end-to-end position with respect to one another, where each emitter has an emitter height;
- a plurality of microlens, wherein each microlens is attached and aligned with one of the plurality of emitters, where each microlens has a microlens height, where the microlens height is less than the accumulated plurality of emitters heights;
- a plurality of dove prisms which are positioned in an array and wherein each of the dove prisms are respectively aligned with the one of the plurality of emitters and at least one of the plurality of microlens;
- and
- a beam combining lens.
2 more elements
A method of integrating a plurality of beams to form a beam with a near circular cross-section, comprising:
- rotating beams by an angle to obtain associated rotated beams, wherein the beams are generated by a plurality of emitters, and where the rotating step is performed by an array of optical elements;
- combining the associated rotated beams by passing the associated rotated beams through a positive lens to form at least one combined beam;
- and
- varying the cross section of the combined beam, by passing the at least one combined beam through an anamorphic lens.
1 more element
An optical device emitting coherent energy in a single collimated beam comprising:
- an array of laser emitters arranged with a regular and predetermined pattern and spacing;
- a microlens array having:
- a plurality of incident microlens each microlens corresponding to at least one of the laser emitters and collectively having a pattern and spacing complementary to the predetermined pattern and spacing of the laser emitters for focusing the energy emitter from said laser emitters;
- and
- additional optical elements collimating the energy emitted by said laser emitters and focused by said incident micro-lens to produce a collimated and phase coherent combination of the outputs of each of said laser emitters to decrease the size of and increase the concentration of the emitted coherent energy.
2 more elements
Dependencies are inferred from the claim text.