Polarizing spectacles

Details Polarizing spectacles Polarizing spectacles

1974-11-20

1976-03-16

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

350159, G02C 712, G02B 530

Patent

active

039443469

ABSTRACT:
Spectacles having a face-formed readily separable two-section eyeglass frame front wherein a first forward section of the frame front supports a pair of fixed non-circular light-polarizing lenses and a rearward second section supports a rotatable light-polarizing lens in alignment with each forwardly disposed lens. A manually operable rear lens rotating mechanism is provided for selectively rotating the two rearward lenses in unison to simultaneously equally rotationally alter the orientation of axes of polarization of these lenses relative to axes of polarization of the fixed forwardly disposed lenses for correspondingly varying the intensity of light permitted to pass through each system of front and rear lenses of the spectacles.

REFERENCES:
patent: 2688900 (1954-09-01), Silverman
patent: 3371979 (1968-03-01), Catanzaro

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