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US 5,349,393 AGranted
Light-transmitting elastomeric suction lens
OwnerJames P. Kreftinventor
Life of this patent
Estimating the term…
Abstract
An ophthalmic lens is disclosed for changing the focal point of a light-transmitting element. Formed from a light-transmitting silicone, the lens has a concave surface for creating suction when applied to a smooth surface. An exposed surface opposes the concave surface for providing a specific diopter. The lens quickly and impermanently attaches with finger pressure to a desirable smooth surface such as the lens of eyeglasses.
Claims16
An ophthalmic lens for attachment to a smooth surface comprising:
- a lens body formed of a light-transmitting elastomeric material;
- said lens body having a contacting concave surface for contacting the smooth surface to create suction with the smooth surface;
- and
- said lens body having an exposed surface opposite said contacting surface for creating a predetermined relationship with said contacting surface and said exposed surface for providing a specific diopter.
1 more element
An ophthalmic lens for attachment to a smooth surface comprising:
- a lens body formed of a light-transmitting elastomeric material;
- said lens body having a contacting concave surface for contacting the smooth surface, said contacting surface having a radius to create suction with the smooth surface;
- and
- said lens body having an exposed surface opposite said contacting surface having another radius for creating a predetermined relationship with said contacting surface and said exposed surface for providing a specific diopter.
1 more element
A device for ophthalmic use comprising in combination:
- a lens having a predetermined prescription through which light rays transmit to the eye;
- and
- a lens body formed of a light-transmitting elastomeric material;
- said lens body having a contacting concave surface for contacting the smooth surface, said contacting surface having a radius to create suction for conformably attaching to said lens;
- and
- said lens body having an exposed surface opposite said contacting concave surface, said exposed surface having another radius for creating a predetermined relationship with said contacting surface and said exposed surface for providing a specific diopter, thereby refracting the light rays transmitted through said lens to the eye.
3 more elements
Dependencies are inferred from the claim text.