Diving mask with lenses and method of fabricating the same

Details Diving mask with lenses and method of fabricating the same Diving mask with lenses and method of fabricating the same

B - Operations, Transporting

63

C

B63C 11/12 (2006.01) A61F 9/02 (2006.01) A63B 33/00 (2006.01) G02C 1/00 (2006.01) G02C 7/02 (2006.01)

Patent

CA 2116532

2116532 9305431 PCTABS00020 A diving mask (10) having hemispherically-shaped lenses (12) mounted on a flexible gasket or portion (14) and fitted to the contours of a user's face (16). Laser scanning or topographic mapping is used to determine the contours of the user's face (16). The hemispherically-shaped lenses (12) are then sized to fit the contours of the face (16). As a result, the spherical center of the lenses substantially coincides with the optical nodal point (26) of the user's eyes (24). The hemispherically-shaped lenses (12) may also be designed so that the spherical center of curvature of the hemispherically-shaped lenses (12) substantially coincides with the center of rotation (150) of a user's eyes (24). This virtually eliminates the phenomenon of underwater magnification-distortion caused by the difference in refractive indices of water and air.

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