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US 5,309,178 AGranted
Laser marking apparatus including an acoustic modulator
AssigneeOptrotech Ltd.
InventorAbraham Gross
Life of this patent
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Abstract
A laser marking apparatus includes at least one laser beam source, a multichannel acoustic modulator defining a plurality of at least partially overlapping modulation regions, apparatus for directing at least one laser beam from the at least one laser beam source through the multichannel acoustic modulator such that each laser beam extends across at least two of the at least partially overlapping modulation regions, and imaging apparatus for directing light from the modulator to a laser marking image plane.
Claims11
Laser marking apparatus comprising:
- at least one multimode laser beam source providing a laser beam;
- a beam compressor receiving said laser beam and providing a partially flattened tubular output beam;
- a multichannel acoustic modulator defining a plurality of at least partially overlapping modulation regions extending in a plane;
- means for directing said partially flattened tubular output beam through said multichannel acoustic modulator;
- and
- imaging means for directing light from said modulator to a laser marking image plane.
3 more elements
Dependencies are inferred from the claim text.