Laser system to drill, cut, or modify an electronic circuit
AssigneeIntraAction Corp.
InventorsKhanh Le, John Lekavich, Bao Tran
Life of this patent
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Abstract
A laser apparatus includes laser, a beam splitter, a phased array acousto-optic deflector (AOD) with one or more transducers, a damper, a galvano deflection unit, and a condensing lens to generate one or more laser beams directed at the electronic circuit. The Galvano deflection unit works with acousto-optic deflector includes an optical element having a surface with one or more steps formed thereon; a conductive layer formed on the surface with the steps; one or more crystals secured to each step; and electrodes positioned on each surface of each crystal.
Claims20
A laser apparatus, comprising:
- a laser oscillator to generate a laser beam;
- a beam splitter;
- a phased array acousto-optic deflector (AOD) with multiple frequency responses in one device, wherein the AOD comprises a plurality of transducers electrically coupled in parallel mounted on predetermined stepped positions and where the transducers are controlled by at least two input frequencies to position the laser output;
- a galvano deflection unit;
- and
- a condensing lens, wherein the phased array AOD is configured to control the direction and focus of the laser beam at multiple frequencies to deflect the laser beam.
A method to operate on an electronic circuit, comprising:
- positioning the electronic circuit on a table driving unit;
- applying a laser beam, a beam splitter, a phased array acousto-optic deflector (AOD) with one or more transducers electrically coupled in parallel, a damper, a galvano deflection unit, and a condensing lens to generate one or more laser beams directed at the electronic circuit, wherein the AOD includes transducers electrically coupled in parallel mounted on predetermined stepped positions and where the transducers are controlled by at least two input frequencies to position the laser output;
- impedance matching the at least two input frequencies of the transducers to a predetermined load;
- generating a sound field in the phased array acousto-optic deflector to deflect a laser beam based the at least two input frequencies;
- and
- controlling a direction and focus of the laser beam using the phased array AOD to cut or create a hole or a via portion in the electronic circuit.
Dependencies are inferred from the claim text.