Performance correcting optical assembly for photographic lens fo

Details Performance correcting optical assembly for photographic lens fo Performance correcting optical assembly for photographic lens fo

1989-03-28

1990-12-11

Arnold, Bruce Y.

350483, G02B 964

Patent

active

049765264

ABSTRACT:
A chromatic aberration correcting lens assembly arranged on the image side of a photographic lens which is used in combination with a prism of a predetermined thickness on the image side thereof to correct the chromatic aberrations of the entire system, is constructed in the form of an assembly of three lens elements made of at least two different materials and cemented together at their adjoining surfaces, each of the cemented surfaces being made concave toward the image side.

REFERENCES:
patent: 61812 (1867-02-01), Dallmeyer

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