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US 2003/0142264 A1Published application
Reading safety glasses
OwnerRoland Westerdal, Chunhuang Liinventors
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Abstract
Safety glasses have a one-piece unitary lens with a left eye plano-convex portion and a right eye plano-convex portion, each having an independent radius of curvature in the range of 5 to 8 diopters. A corrective lens segment is integrally positioned in each plano-convex portion. The corrective lens segments are preferably semi-circular with a straight upper edge and are surrounded by the plano-convex portion. Side shields are formed integrally with the lens. A frame includes a top piece extending along the lens and side shields, and temples hinged to the top piece.
Claims17
Safety glasses comprising:
- A) a one-piece unitary lens having a left eye plano-convex portion and a right eye plano-convex portion, the left eye plano-convex portion and the right eye plano-convex portion each having an independent radius of curvature, said lens having an upper edge;
- B) a left eye corrective lens segment integrally formed in the left eye plano-convex portion and a right eye corrective lens segment integrally formed in the right eye plano-convex portion;
- and
- C) a frame receiving and holding the one-piece unitary lens, and adapted to support the lens on a wearer's face with the corrective lens segments positioned for reading and close work:
1 more element
Dependencies are inferred from the claim text.