Optical information processor

Details Optical information processor Optical information processor

G - Physics

06

E

G06E 3/00 (2006.01) G01N 27/447 (2006.01) G06K 9/00 (2006.01) G06K 9/74 (2006.01)

Patent

CA 2087888

Visual recognition apparatus for use in, for example, a robot, requires an optical information processor for image processing or recognition. The processor includes a first spatial light modulator for displaying an input image, a first lens having a front focal plane on which the first spatial light modulator is positioned, a second spatial light modulator for displaying at least one optical filter, a second lens having a front focal plane on which the second spatial light modulator is positioned, and a third lens having a front focal plane on which a back focal plane of the second lens lies. The processor also includes a beam splitter for combining light transmitted through the first lens with light transmitted through the third lens, and a fourth lens having a front focal plane on which both a back focal plane of the first lens and a back focal plane of the third lens generally lie. The arrangement enables the system to use two optical paths parallel to each other, and, as a consequence to reduce the length of the processor.

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