Projection lens with color correction

Details Projection lens with color correction Projection lens with color correction

1985-09-20

1989-03-28

Corbin, John K.

350412, G02B 1318, G02B 900

Patent

active

048158313

ABSTRACT:
A partially color corrected projection lens having three groups comprising from the image end a first group serving to correct aberrations, a second group supplying essentially all of the positive power of the lens and a third negative group where the second group comprises two positive elements with a negative element therebetween.

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