Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1991-07-19
1993-05-11
Arnold, Bruce Y.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
310 40R, 318128, 359876, G02B 2608
Patent
active
052106365
ABSTRACT:
A compact system specially adapted for optical scanning in microscopes, substantially eliminates vibration associated with scanned elements which are rapidly reciprocated through relatively large angular arcs at substantial distances from a pivot axis by providing a counterrotating counterbalancing element and a second counterbalancing element rigidly connected to the scanned element in which the centers of mass of both the counterrotating counterbalance and the counterbalanced scanned element are placed on a single rotational axis about which the two counterbalanced systems oppositely rotate, thereby eliminating unbalanced momentum vectors to reduce transmission of vibration to the stationary supporting structures. The use of bearings between the counterrotating elements to promote cancelling of momentum vectors at the rotation axis, the application of driving torque between the counterrotating elements such that no reaction torque is applied to the supporting structure, aerodynamic resistance balancing, and balancing of the elastic force from power input connections to the counterrotating elements, further limit transmission of vibration to the stationary supporting structures to negligible levels while providing an exceptionally compact device.
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Arnold Bruce Y.
Phan James
Tendler Robert K.
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