Diving mask with improved field of vision

Details Diving mask with improved field of vision Diving mask with improved field of vision

1993-07-16

1995-05-30

Sikes, William L.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Floating or underwater type

351 41, 2430, G02C 100

Patent

active

054206499

ABSTRACT:
A diving mask has a body for sealably engaging a wearer's face. The mask has one or more transparent viewing plates supported by the body, each having inner and outer surfaces. One or more prisms or simply curved lenses are affixed to the viewing plates to improve the diver's field of vision. A pair of horizontally oriented prisms or lenses may be mounted to a front viewing plate below the diver's normal view plane to provide a field of view directed downward toward the diver's body so as to provide a self-inspection capability. Vertically oriented prisms or lenses may be mounted on front and side plates to produce an enhanced and substantially continuous horizontal peripheral field of view.

REFERENCES:
patent: 2594698 (1952-04-01), Thomas
patent: 3672750 (1972-06-01), Hagen
patent: 3899244 (1975-08-01), Mulder
patent: 3944345 (1976-03-01), Decorato
patent: 4468819 (1984-09-01), Ohno
patent: 4704014 (1987-11-01), Carner, Jr.
patent: 4717249 (1988-01-01), Fischer
patent: 5170190 (1992-12-01), Berke
patent: 5216454 (1993-06-01), Berke
patent: 5274405 (1993-12-01), Webster
patent: 5345615 (1994-09-01), Garofalo
Advertisement from p. 14 of Scuba Times, Jul./Aug. 1993 issue.
Weldman et al., "Visual Fields of the Scuba Diver," Human Factors, 7, 423-430, 1965.

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