Optical: systems and elements – Lens – Telecentric system
Patent
1998-09-09
1999-07-06
Epps, Georgia
Optical: systems and elements
Lens
Telecentric system
359740, 359760, G02B 1322, G02B 308, G02B 962
Patent
active
059204346
ABSTRACT:
Provided is a color-image-reading Gaussian lens for reading out color images, color originals, or negative or positive films, which is suitably used at a low magnification of -1/2.5.times. to -1/1.25.times., effectively corrects axial chromatic aberration in particular, and exhibits high performances in a wide wavelength range. A six-sheet Gaussian lens comprises, successively from an object side, two convex lenses, two concave lenses, and two convex lenses, while a stop is disposed between the two concave lenses. In particular, the following conditional expressions are satisfied:
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Epps Georgia
Fuji Photo Optical Co., Ltd.
Lester Evelyn A.
Snider Ronald R.
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