Prism section lens spectacles

Details Prism section lens spectacles Prism section lens spectacles

1989-06-30

1990-10-09

Dzierzynski, Paul M.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

351170, 351175, G02C 706

Patent

active

049616390

ABSTRACT:
Spectacle lenses have upper and lower viewing sections, the upper section comprising a combined pair of prisms which refract light rays to angularly modify a line of sight from a viewer therethrough to an intermediate and elevated object, e.g., an item on a video display screen so that the item is perceived at a lower, laterally outward, and more distant position.

REFERENCES:
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patent: 2594698 (1952-04-01), Thomas
patent: 2817332 (1957-12-01), Shlechter
patent: 3454715 (1969-07-01), Larach et al.
patent: 3454716 (1969-07-01), Larach
patent: 4647165 (1987-03-01), Lewis
patent: 4781452 (1988-01-01), Ace

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