Linear illuminator for reading separated color image using linea

Details Linear illuminator for reading separated color image using linea Linear illuminator for reading separated color image using linea

1994-08-04

1995-09-05

Groody, James J.

Television

Special applications

Film, disc or card scanning

358490, H04N 904

Patent

active

054482895

ABSTRACT:
A linear illuminator for image reading by the use of a linear sensor comprises a linear illumination light source, a cylindrical rotational member provided about the circumference of the linear illumination light source, and plurality of color separation filters installed on the rotational member. By controlling the rotation of the rotational member, plural kinds of color separation linear illumination light are output in the time series. The cylinder may have a shielding area between filters, which enables measurement of the dark current of the linear sensor.

REFERENCES:
patent: 2458649 (1949-01-01), Schade
patent: 2880267 (1959-03-01), Goldmark et al.
patent: 3875587 (1975-04-01), Pugsley
patent: 4725891 (1988-02-01), Marian
patent: 4855818 (1989-08-01), Morimoto et al.
patent: 4887153 (1989-12-01), Uehara et al.
patent: 5103385 (1992-04-01), Federico et al.
patent: 5339107 (1994-08-01), Henry et al.

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