G - Physics – 02 – B
Patent
G - Physics
02
B
341/88, 88/96
G02B 17/06 (2006.01) G02B 26/10 (2006.01) H04N 1/028 (2006.01) H04N 3/08 (2006.01) H04N 3/10 (2006.01)
Patent
CA 2003630
ABSTRACT OF THE DISCLOSURE The present invention relates to an optical scanner of a design whereby mechanical wearing parts are minimized. This is accomplished by using piezoelectric actuators to supply thrust energy to move the reflecting mechanism of the scanner and using a corresponding and cooperating piezoelectric actuator at the other extreme of movement of the reflector to sense the amount of impact for use in calculating the energy to be supplied for a return thrust. The magnitude of energy required is minimized by using contact pads between the scanner and the actuators which effectively operate as short-stroke springs whereby the actuators only need to supply the energy losses in the pads and from windage and bearing friction.
Ridout & Maybee Llp
Rockwell International Corporation
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