Auxiliary corrective eyeglasses for use with primary eyeglasses

Details Auxiliary corrective eyeglasses for use with primary eyeglasses Auxiliary corrective eyeglasses for use with primary eyeglasses

G - Physics

02

C

G02C 9/00 (2006.01) G02C 7/08 (2006.01)

Patent

CA 2311827

Auxiliary "task-distance" eyeglasses for use with conventional corrective eyeglasses to eliminate the constant head tilting otherwise necessary to maintain focus when using only the conventional lenses. The auxiliary glasses have upper partial lenses that correct mid-range vision, the focal length required for viewing a computer screen, reading piano music, viewing an instrument panel, or any other arms' length task. The zone of mid-range correction extends across the full width of the lenses. The lenses of the auxiliary glasses are connected by a bridge and supported on the primary glasses by two short tabs that extend sidewardly so as to rest on the temple members of the primary glasses. No clips or clamps are involved, so the auxiliary glasses simply "drop in" behind the regular glasses, avoiding damage to either the primary or the auxiliary lenses. This configuration makes the auxiliary glasses less obtrusive than conventional clip-on lenses. Moreover, the auxiliary glasses can be formed inexpensively in one piece of molded plastic, and can be sold without a prescription.

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