Achromatic lens system

Details Achromatic lens system Achromatic lens system

1994-08-24

1996-10-22

Epps, Georgia Y.

Optical: systems and elements

Lens

Multiple component lenses

359786, 359787, 359788, G02B 914

Patent

active

055683258

ABSTRACT:
An achromatic lens system includes in order, from the object side, a front lens group, a chromatic aberration correcting lens group, and a rear lens group. Aberrations, including spherical aberration, coma, astigmatism, curvature of image, as well as axial chromatic aberration of wavelengths from green to red, are substantially corrected by the front lens group and the rear lens group. The axial chromatic aberration of the wavelength blue, caused by the front lens group and the rear lens group, is corrected by the chromatic aberration correcting lens group.

REFERENCES:
patent: 2628532 (1953-02-01), Baker
patent: 2768555 (1956-10-01), Knutti
patent: 5103342 (1992-04-01), Kataoka

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