active mirror

active mirror

[′ak·tiv ′mir·ər]
(optics)
A mirror whose position and shape are continually adjusted in response to changing environmental conditions in order to obtain optimum performance.
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References in periodicals archive ?
The scope of the contract is the design, manufacture, test, and delivery of: M1 vertical focussing active mirror and mechanics, M2 horizontal focussing active mirror and mechanics, Vacuum vessel, Support system to mount on DLS End station granite, Mechanical and electrical interface to beamline services.
A 4.2-meter tertiary mirror will relay the light beam to an AO system that will include a 2.5-meter active mirror (whose more than 5,000 actuators will tweak its shape 1,000 times a second), and another 2.7-meter mirror for final image corrections.
ESO's 3.5-m New Technology Telescope pushes wavefront sensing and real-time active mirror support to a new plateau, and it has ingenious dome shutters to improve local seeing.
They use technologies such as active mirror supports, adaptive optics, even interferometry.