Micromirror array lens with free surface

Optical: systems and elements – Optical modulator – Light wave directional modulation

Reexamination Certificate

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Details

C359S290000, C359S291000

Reexamination Certificate

active

07095548

ABSTRACT:
A micromirror array lens includes a plurality of micromirrors, and reproduces a predetermined free surface by controlling rotation and/or translation of the micromirrors. The micromirror is controlled by control circuitry, upheld by a mechanical structure, and includes a reflective surface. The predetermined free surface of the lens is changed by controlling rotation and/or translation of the micromirrors. The micromirrors are arranged in one or more concentric circles to form the lens. The micromirror has a fan shape, a hexagonal shape, a rectangular shape, a square shape, or a triangle shape. The reflective surface of the micromirror is substantially flat. The control circuitry is constructed under the micromirrors by using semiconductor microelectronics technologies. The micromirrors are actuated by electrostatic and/or electromagnetic force. The reflective surface of the micromirror is made of materials with high reflectivity. The lens is used for an imaging apparatus, video monitoring camera, a camcorder, etc.

REFERENCES:
patent: 2002376 (1935-05-01), Mannheimer
patent: 2002/0102102 (2002-08-01), Watanabe et al.
patent: 2004/0252958 (2004-12-01), Abu-Ageel
patent: 2005/0174625 (2005-08-01), Huibers
James G. Boyd, Fast response Variable Focusing Micromirror Array Lens; SPIE vol. 5055(2003).

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