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US 5,512,078 AGranted
Apparatus for making linearly tapered bores in quartz tubing with a controlled laser
OwnerStephen E. Griffininventor
Life of this patent
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Abstract
Method and apparatus for providing a linearly tapered bore in quartz/glass tubing includes a laser and elements for focusing the laser onto the glass tubing. The glass/quartz tubing is rotated in the laser beam and is moved vertically in the laser beam to provide a linear taper in the interior bore. The power of the laser beam is controlled and the laser beam is appropriately focused by a lens to provide a desired width of the beam at the glass/quartz tubing.
Claims7
Apparatus for making linearly tapered bores in tubing comprising in combination:
- laser means for providing a light beam for producing a heat output for the tubing;
- means for focusing the light beam on the tubing;
- means for moving the tubing in the light beam;
- means for modulating the heat output of the light beam on the tubing as the tubing is moved in the light beam, including sensing the power output of a portion of the light beam;
- and
- chopper means movable into and away from the light beam in response to the sensed power output and predetermined parameters.
3 more elements
Dependencies are inferred from the claim text.