Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1986-12-12
1989-01-03
Corbin, John K.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
350548, 350569, 351158, G02B 2702, G02B 702, G02B 2302, G02C 100
Patent
active
047952350
ABSTRACT:
An apparatus for increasing visual acuity while viewing an image comprising a roof prism having an apex with apex faces adjacent thereto, an eye piece lens mounted to a first apex face of the roof prism, and an objective lens mounted to a second apex face of the roof prism and to the lens of a pair of eyeglasses. The objective lens is mounted to the eyeglasses lens at a point such that the eye of a patient wearing the eyeglasses must be rotated at a angle of from about 25.degree. to about 50.degree. relative to the visual axis of the patient's eye when looking straight ahead to view an image through the apparatus.
REFERENCES:
patent: 1610553 (1926-12-01), Jones
patent: 2058676 (1936-10-01), Foster
patent: 4195918 (1980-04-01), Freche et al.
patent: 4704000 (1987-11-01), Pekar et al.
Kollmorgen Optical Corporation publication entitled "Spectel," Bulletin No. 301, Sep. 1955.
Bailey, I. L., "The Honey-Bee Lens: A Study of its Field Properties," Optometric Monthly, pp. 275-278 (May, 1982).
Edwards Optical Corporation Brochure advertising the BITA* Low Vision Enhancer (undated).
Corbin John K.
Kachmarik Ronald M.
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