Optical encoder

Details Optical encoder Optical encoder

1978-02-16

1980-08-26

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358212, 358293, H04N 112, H04N 118

Patent

active

042198500

ABSTRACT:
An optical encoder for scanning a master image at scan points positioned in a plurality of parallel scan rows across the master image includes a means for illuminating the master image. A plurality of photoelectric scanning means, each such scanning means including a row of photoelectric transducers, provides electrical signals in dependence upon the amount of light striking the transducers. Light is directed from the master image by a focusing arrangement toward a first one of the photoelectric scanning means such that the first photoelectric scanning means receives light from an associated one of the scan rows on the master image. An optical diversion means includes one or more half silvered mirrors which divert a portion of the light directed toward the first photoelectric scanning means such that it strikes the others of the plurality of photoelectric scanning means whereby each of the scanning means receives light from an associated one of the plurality of scan rows on the master image.

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Janeway et al.-Multiple Diode Array Optics-IBM Tech Disclosure Bulletin-vol. 20, #1, Jun. 1977, pp. 18, 19.
Potak-Microfilm Scanning System-IBM Tech Disclosure Bulletin-vol. 17, #12, May 1975.

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