Apparatus for controlling a laser path length in a ring laser gyro
AssigneeHoneywell International Inc.
InventorChristina M. Schober
Life of this patent
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Abstract
A path length control apparatus (PLC) for a ring laser gyroscope (RLG) provides a flattened surface for reflecting a laser beam. The flattened surface is achieved by providing a void behind the mirror in the laser beam area thus separating this area from stresses induced by temperature, voltage and/or displacement.
Claims16
A piezoelectric transducer configured for use as a path length control apparatus of an optical device, comprising:
- a void located in a central region of the piezoelectric transducer.
A piezoelectric transducer configured for use as a path length control apparatus of an optical device, comprising:
- an attached element attached to a bottom side of the piezoelectric transducer, wherein the attached element comprises a void region.
A piezoelectric transducer arrangement configured for use as a path length control apparatus of an optical device, comprising:
- a first layer located on a top side of the piezoelectric transducer;
- a second layer located below the first layer;
- an adhesive layer located adjacent to the second layer and on a side opposite the first layer, the adhesive having a void located in a central region of the arrangement;
- and
- a mirror located adjacent to the adhesive layer and on a side opposite the second layer.
A piezoelectric transducer arrangement configured for use as a path length control apparatus of an optical device, comprising:
- a first layer located on a top side of the piezoelectric transducer;
- a second layer located below the first layer;
- an adhesive layer located adjacent to the second layer and on a side opposite the first layer;
- and
- a mirror located adjacent to the adhesive layer and on a side opposite the second layer, the mirror having a void that is located in a central region of the arrangement and that extends part way from a back surface of the mirror that attaches to the adhesive layer to a location within the mirror over an area of the mirror that reflects an energy beam.
Dependencies are inferred from the claim text.