Deformable mirror control device and device for observing...

Details Deformable mirror control device and device for observing... Deformable mirror control device and device for observing...

2008-06-17

2008-06-17

Cherry, Euncha P. (Department: 2872)

Optical: systems and elements

Mirror

Including specified control or retention of the shape of a...

C359S849000

Reexamination Certificate

active

07387394

ABSTRACT:
A deformable mirror control device is provided with improved response characteristic by devising the mode of control even if the deformable mirror has a large time constant in comparison with the response speed required in applications such as the retinal camera. The deformable mirror device comprises a deformable mirror10having a reflective surface deformed with an applied voltage, and a voltage control circuit20for controlling the voltage applied to the deformable mirror10.Here, the voltage control circuit20produces a steady-state voltage at which the reflective surface of the deformable mirror10takes an intended shape in a steady state, and produces a transient voltage that causes the reflective surface of the deformable mirror10to deform toward the intended shape, and also produces a transient voltage that causes the shape of the reflective surface of the deformable mirror10to shift quickly toward the intended shape.

REFERENCES:
patent: 6042233 (2000-03-01), Mihashi et al.
patent: 6791741 (2004-09-01), Hishioka
patent: 11-137522 (1999-05-01), None
patent: 2004-329282 (2004-11-01), None
patent: WO 98/27863 (1998-07-01), None

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