Photoelectric optical fiber reading apparatus

Details Photoelectric optical fiber reading apparatus Photoelectric optical fiber reading apparatus

1985-04-23

1988-05-10

Wan, Gene

Photocopying

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Light boxes

350 9627, 355 1, 358200, 358293, G02B 604

Patent

active

047430893

ABSTRACT:
An optical reading head is an optical reader for photoelectric reading of images on a medium, comprising a plural light-emitting optical fibers for transmitting beams of light from light emitting elements to the surface of the medium, and plural light-receiving optical fibers for transmitting beams of reflected light from the medium surface to light-sensitive elements. The ends of the light-emitting and light-receiving optical fibers opposite to the medium surface are positioned in first and second rows, respectively, at a predetermined pitch. The ends of the light-receiving optical fibers are displaced relative to the ends of the light-emitting optical fibers along the first and second rows by a distance equal to a half of the predetermined pitch. Also disclosed is an optical reader comprising the above-described optical reading head, and a control device for controlling the operations of the light emitting elements, so that the resolution of the reading head is variable in two steps.

REFERENCES:
patent: 3430057 (1969-02-01), Gehahr
patent: 4405207 (1983-09-01), Kay
patent: 4544258 (1985-10-01), Takano
patent: 4571022 (1986-02-01), Lama et al.

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