Refractor optical system

Details Refractor optical system Refractor optical system

1978-04-07

1980-08-05

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

A61B 304

Patent

active

042159199

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.

REFERENCES:
patent: 1265671 (1918-05-01), Kellner
patent: 1455457 (1923-05-01), Tillyer
patent: 2266797 (1941-12-01), Peck
patent: 3498699 (1970-03-01), Wilkinson
M. Lang et al., Am. J. Optom. & Physiol. Optics "Additive Lens Systems in Eye Refractors", vol. 52, pp. 533-540 (Aug. 1975).

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