Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Combined
Patent
1995-10-03
1997-10-21
Mai, Huy
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Combined
359407, 359482, G02C 100, G02B 2300, G02B 2702
Patent
active
056801955
ABSTRACT:
A small, light, wide field (e.g. about a 15 degree field of view), Keplerian bioptic telescope is provided which preferably is mounted in association with conventional eyeglasses. A casing includes first and second open ends, a middle section, and an optical system mounted within it. The optical system includes an eye lens adjacent the casing first end, an objective lens adjacent the casing second end, and a right angle prism and penta prism between the eye lens and objective lens, disposed side by side, typically with faces in face to face engagement. A field lens may be provided between the eye lens and the prisms. The position of the objective lens is adjustable by movement toward and away from the casing middle section. An opening may be formed in a first eyeglass lens and the casing press fit into the opening so that the first end of the casing is on a first side of the eyeglass lens and the middle section is on the second side of the eyeglass lens opposite the first side, extending about 1.25 inches or less from the lens.
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Greene Henry A.
Pekar Jaroslaw
Mai Huy
Ocutech, Inc.
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