Tip-tilt mirror actuation system having simplified driver circui

Details Tip-tilt mirror actuation system having simplified driver circui Tip-tilt mirror actuation system having simplified driver circui

1984-03-12

1986-05-13

Corbin, John K.

350360, G02F 129, G02B 508

Patent

active

045882681

ABSTRACT:
Groups of electromechanical actuators affixed to a movable mirror are coupled to the mirror along radial lines extending from the central portion thereof. The actuators in each of such groups have variable sensitivity of mechanical response per volt applied, such sensitivity increasing for each actuator which is positioned further and further away from the central portion, and thus for any desired motion, only one control voltage is required to drive all actuators in a particular group. Variable sensitivity is preferably attained by constructing all actuators to have the same number of piezo-electric layers and connecting more and more electrodes associated with the layers to the single control voltage for actuators positioned further and further away from the central portion of the optical element.

REFERENCES:
patent: 4128309 (1978-12-01), Lehureau
patent: 4257686 (1981-03-01), Albetinetti et al.
patent: 4298247 (1981-11-01), Michelet et al.
Pearson et al., "Experimental Studies of a Deformable Adaptive Optical System", J. Opt. Soc. Am., vol. 67, No. 3, Mar. '77.

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