A - Human Necessities – 63 – B
Patent
A - Human Necessities
63
B
A63B 33/00 (2006.01) B63C 11/12 (2006.01)
Patent
CA 2212655
Swimming or diving goggles comprising a one- or two-curved-lens system having a progressive cornerless curvature of cylindrical type with vertical axes and variable radius, without curvature in the vertical plane and described by a peculiar geometrical law, according to which the front portion located in front of the user's eyes has a curvature radius not less than 130 mm, and the two lateral portions have a lower curvature radius, anyway not less than 25 mm. The distance of the lens or lenses from the user's face is extremely reduced and such that two rays coming out from the eyes and lying on the horizontal plane intersect the lens or lenses at two point such that the perpendiculars to the inner surface of the lens or lenses at those two points form an angle not greater than 30° therebetween.
Cette invention concerne des lunettes de natation ou de plongée comprenant des lentilles à courbure unique ou double progressive sans angle présentant des axes verticaux et un rayon de courbure variable, sans courbure dans le plan vertical et appliquant une loi géométrique particulière selon laquelle la partie frontale devant les yeux de l'utilisateur comporte un rayon de courbure d'au moins 130 mm et les deux parties latérales, un rayon de courbure moins prononcé mais non inférieur à 25 mm. La distance séparant la ou les lentilles du visage de l'utilisateur est extrêmement faible et telle que deux rayons partant des yeux dans le plan horizontal coupent la ou les lentilles en deux points tels que les normales à la surface intérieure du ou des lentilles forment un angle d'au plus 30 degrés entre elles.
Macrae & Co.
Technisub Spa
LandOfFree
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