Refractor optical system

Details Refractor optical system Refractor optical system

1980-03-27

1983-11-08

Corbin, John K.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

A61B 302

Patent

active

044138911

ABSTRACT:
A refractor optical system having a new series of spherical and cylinder lenses substantially eliminates the irregular occurrence of additive errors when lenses spaced from the reference plane are used or more than two lenses are combined and permits correction for the significant additive errors by non-additive lens selection is disclosed.

REFERENCES:
patent: 1455457 (1923-05-01), Tillyer
patent: 2266797 (1941-12-01), Peck et al.
Lang et al, Additive Lens Systems in Eye Refractors, American Journal of Optometry & Physiological Optics, 8/75, pp. 533-540.

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