Apochromatic lens system

Details Apochromatic lens system Apochromatic lens system

1990-09-07

1992-04-07

Arnold, Bruce Y.

Optical: systems and elements

Lens

Selective magnification by exchanging or adding a lens...

G02B 1502, G02B 964

Patent

active

051033429

ABSTRACT:
An apochromatic lens system is corrected for chromatic aberration at three wavelengths. The apochromatic lens system includes a plane glass and a plane lens which are interchangeable with each other. When the plane glass is disposed on the optical axis of the lens system, the plane glass cooperates with the lens system to correct for chromatic aberration at first and second wavelengths. When the plane lens is disposed on the optical axis instead of the plane glass, the plane lens cooperates with the lens system to correct for chromatic aberration at the first wavelength and at a third wavelength.

REFERENCES:
patent: Re29856 (1978-12-01), Kano
patent: 4861983 (1989-08-01), Sasada et al.

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