Tip-tilt mirror actuation system having simplified driver circuitry
US4588268A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1984 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Mar 12, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/06
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.