Impact resistant face shield

A - Human Necessities – 42 – B

Patent

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Details

A42B 3/22 (2006.01) A42B 3/06 (2006.01) A61F 9/06 (2006.01) G02C 7/02 (2006.01) G02C 7/16 (2006.01) G02C 11/08 (2006.01)

Patent

CA 2226845

An impact resistant face shield that includes a single formed arcuate lens portion (12) that, in a first orientation has a first curvature (16) extending in a horizontal direction and a second curvature (18) extending in a vertical direction. The lens portion has a top portion and a bottom portion (20) that extends relatively inwardly toward the face of the wearer relative to an intermediate portion disposed between the top and bottom portions. Each curvature of the lens defines an arc of a circle having a substantially uniform radius to produce nominal levels of distortion, thereby reducing the prism effects created by the lens, and providing an optically corrected viewing window.

Protection faciale résistante aux chocs, comprenant une partie lentille arquée d'une pièce (12), laquelle, selon une première orientation, présente une première courbure (16) s'étendant dans une direction horizontale et une deuxième courbure (18) s'étendant dans une direction verticale. La partie lentille comporte une partie haute et une partie basse (20) qui s'étend relativement vers l'intérieur vers le visage de l'utilisateur par rapport à une partie intermédiaire disposée entre les parties haute et basse. Chaque courbure de la lentille définit un arc de cercle dont le rayon est sensiblement uniforme, afin de produire des niveaux de distorsion nominaux, ce qui réduit les effets de prisme créés par la lentille, et assure une fenêtre de vision corrigée optiquement.

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