Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Floating or underwater type
Reexamination Certificate
2007-11-27
2007-11-27
Mai, Huy (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Floating or underwater type
C002S430000, C359S737000
Reexamination Certificate
active
11255968
ABSTRACT:
This invention is directed to a device of “wide-angle diving lens”, primarily comprises a lens; and characterized by: the lens is made by a main lens and extended with a plurality of different angles of sub-window lens, or at the inner edge of the lens arranged Fresnel lens, or at the outer edge of the lens chamfered with embedded joint. Accordingly, the present invention “wide-angle diving lens” not only takes advantage of the multi-angles of lens to increase visible range and enhance the structure solidity but also applies Fresnel lens to modify the light refraction angle to enlarge visible range; and further assembly conveniently as well as no visible range disrupt.
REFERENCES:
patent: 4704014 (1987-11-01), Carner, Jr.
patent: 5420649 (1995-05-01), Lewis
patent: 6921164 (2005-07-01), Morgan et al.
patent: 2004/0128746 (2004-07-01), Kuo
Mai Huy
Rabin & Berdo P.C.
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