Patent
Piezoelectric optical beam deflector
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TLDR
In this paper, a piezoelectric bimorph scanner is disclosed which has a flexural beam attached to the free end of a cantilever mounted bimomorph crystal.Abstract:
A piezoelectric bimorph scanner is disclosed which has a flexural beam attached to the free end of a cantilever mounted piezoelectric bimorph crystal. A mirror is bonded to the flexural beam a predetermined distance from the bimorph crystal. An AC voltage of predetermined frequency is applied to the bimorph crystal causing the flexural beam to oscillate with a node at the center of the mirror. The mirror rotates about the node rather than swinging in an arc, enabling the scanner to deflect a collimated light beam over a larger deflection angle than heretofore possible without additional light beam control apparatus. In an alternate embodiment, a laser diode may be mounted on the flexural beam instead of the mirror, further reducing costs and components.read more
Citations
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References
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Patent
Electromechanical monolithic resonator
TL;DR: In this article, an excitation element is formed in the substrate at a suitable location to cause mechanical strain in the semiconductor substrate by a thermal expansion mechanism, and a device is added to the substrate to convert mechanical stresses into electrical phenomena.
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Lever-action mountings for beam steerer mirrors
Lee F. Frank,James K. Lee +1 more
TL;DR: In this article, flexible hinges are employed to avoid any introduction of play or looseness between the mirror and mirror driver in a mirror-type light beam deflector or steerer, which utilizes a hinged mounting linkage to couple a beam deflecting mirror to a mirror driving apparatus.
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TL;DR: In this article, a light deflection device is defined by a piezoelectric bimorph of a known type which has been modified according to this invention so as to make each Bimorph layer totally internally reflecting.
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