Piezoelectric laser scanner

Details Piezoelectric laser scanner Piezoelectric laser scanner

G - Physics

02

B

314/28

G02B 26/10 (2006.01) G02B 6/04 (2006.01) G02B 26/08 (2006.01) G06K 7/10 (2006.01) G06K 15/12 (2006.01) H04N 1/113 (2006.01) H04N 1/12 (2006.01)

Patent

CA 1253194

ABSTRACT OF THE DISCLOSURE 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.

522738

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