Rimless spectacles and method for making the same
AssigneeGentex Corporation
InventorLeonard P. Frieder, Jr.
Life of this patent
Estimating the term…
Abstract
The method for manufacturing rimless spectacles provides a connection region between the lens and the rimless supporting structure wherein the connection region includes a radiation absorbing dye having a predetermined wavelength absorbing band. The lens and rimless supporting structures are then joined together, and the radiation absorbing dye is irradiated by a source of radiation operating at a wavelength within the predetermined wavelength band. Once exposed, the lens and rimless supporting structure are fused together.
Claims20
A method for manufacturing rimless spectacles having plastic lenses and rimless supporting structures, the method comprising the steps of:
- providing a connection region between a plastic lens and a rimless supporting structure, said connection region having a radiation absorbing dye having a predetermined wavelength absorbing band;
- exposing the radiation absorbing dye to a source of radiation operating at a wavelength within the predetermined wavelength band of the radiation absorbing dye;
- and fusing the lens to the rimless supporting structure in the connection region to form an integral supporting assembly whereby optical interference from the surface of the supporting structure when viewed by the eye is substantially avoided due to its integration with the lens.
A method for assembling an optically transparent, rimless supporting tab onto an ophthalmic lens comprising the steps of:
- providing a thermoplastic supporting tab with a profiled surface extending in a circumferential direction and coating the surface with a radiation absorbing dye that is substantially transparent in visible light following irradiation;
- trimming a plastic ophthalmic lens to form a periphery for mating to said coated profiled surface;
- and
- assembling the tab onto the periphery and irradiating the dye within the dye's absorption band through the tab or lens to fuse the tab onto the ophthalmic lens thereby forming an integral optical supporting assembly that substantially avoids optical interference with the ophthalmic lens.
A method for manufacturing rimless spectacles having plastic lenses and rimless supporting structures, the method comprising the steps of:
- providing a connection region between the edge of each lens and the rimless supporting structure, said connection region having a radiation absorbing dye having a predetermined wavelength absorbing band;
- joining the rimless supporting structure with an edge of the lens in an abutting relation;
- and
- irradiating the dye within the dye's absorbing band thereby fusing the lens and rimless supporting structure together at the point of contact to form an integral rimless spectacle assembly whereby optical interference from a surface of the supporting structure when viewed by the eye is substantially avoided due to its integration with the lens.
Dependencies are inferred from the claim text.