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Quick focusing of imaging optics using micromachined adaptive mirrors |
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| Authors: | Gleb Vdovin |
| Institution: | Laboratory of Electronic Instrumentation, Delft University of Technology, P.O. Box 5031, 2600 GA, Delft, The Netherlands |
| Abstract: | Inexpensive micromachined varifocal mirrors, providing a very wide range of focal distance control are described. The focal distance of a mirror with a clear aperture of 1 cm can be controlled in the range ∞ to +0.25 m (four diopters) in a frequency band up to 75 Hz by applying control voltages in the range of 0 to 200 V. Applications for quick focus control in a CCD camera and for direct correction of the accommodation depth of a human eye are reported. |
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