Method and apparatus for optical imaging using a small, flat, re

Details Method and apparatus for optical imaging using a small, flat, re Method and apparatus for optical imaging using a small, flat, re

1989-02-02

1990-08-14

Arnold, Bruce Y.

354354, G02B 518, G03B 1900

Patent

active

049482114

ABSTRACT:
An image forming technique using a small, flat mirror is disclosed. A real, inverted image of an object is formed with infinite depth of field when the diameter of this mirror is between 0.15 and 0.4 millimeters. In smaller diameters, this forms a diffraction pattern image of an object. The optimal diameters depend on wavelength of the light and the distances involved.

REFERENCES:
Thomy H. Nilsson, "Pinhead Mirror: A Previously Undiscovered Imaging Device?", Applied Optics, vol. 25, No.l 17, pp. 2863-2864, Sep. 1, 1986.
Pinhole Journal, vol. 4, No. 1, Apr. 1988, pp. 2-5, "Pinhead Mirrors: Imaging, . . . of Light" by T. Nilsson.
Scientific American, vol. 256, No. 3, Mar. 1987, pp. 88-95, "Optical Neural Computers" by Abu-Mostafa et al.

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