Diving mask

Details Diving mask Diving mask

1993-04-15

1996-03-26

Sikes, William L.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Floating or underwater type

351 41, 2248, G02C 100

Patent

active

055025153

ABSTRACT:
A diving mask comprising: a supporting member arranged for sealing engagement with the face of the user; a lens means mounted in said supporting member, said supporting member being dimensioned, so that the lens means is positioned near the eyes of the user with a portion of the nose extending forwardly of the lens means to provide a low profile, low internal volume mask; and said lens means being substantially spherical in configuration and having a single center of curvature, whereby the apparent magnification of images underwater is less than that observed through a conventional lens plate.

REFERENCES:
patent: 2928097 (1960-03-01), Neufeld
patent: 3010108 (1961-11-01), Sachs
patent: 3055256 (1962-09-01), Andresen
patent: 3672750 (1972-06-01), Hagen
patent: 5204700 (1993-04-01), Sansalone
Hecht, Eugene, Optics, 2nd Edition, Addison-Wesley Publishing Co., 1987, p. 136.

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