Imaging system utilizing an oscillating gradient index lens...

G - Physics – 02 – B

Patent

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Details

314/28, 88/97.74

G02B 6/06 (2006.01) B41J 2/45 (2006.01) G02B 3/00 (2006.01) G03B 27/52 (2006.01) G03G 15/04 (2006.01) H04N 1/031 (2006.01) H04N 1/04 (2006.01) H04N 1/193 (2006.01)

Patent

CA 1285604

ABSTRACT OF THE DISCLOSURE The present invention is directed to optical imaging systems which utilize linear lens arrays and particularly gradient index lens arrays as the means for projecting light images onto a photosensitive image member. Exposure modulation at the image plane is reduced by oscillating the lens array during an exposure interval, the oscillating period and excursion distance being dependent upon the type of imaging environment the lens is used in. For document copying applications, the requirement for a two-row array to provide minimum exposure modulation is reduced so that a one- row lens array is enabled. For printer and RIS scanning functions, oscillation of a two-row array enables improved system efficiency and hence greater image irradiance and exposure.

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