Ophthalmic lenses utilizing polyethylene terephthalate polarizing films
AssigneeYounger Mfg. Co.
InventorsRussell E. Evans, Thomas Balch, Edward A. Beeloo, Nancy L. S. Yamasaki
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Abstract
An optical-quality part such as an ophthalmic lens is provided having a PET polarizing film integrally bonded thereto and, optionally, a hard coating integrally bonded to either the PET polarizing film or to the optical construct containing the PET polarizing film. In a preferred construction, the lens material or film may be surface treated, either physically and/or chemically, for integrally bonding the film to the lens material. Similarly, in another preferred construction, the film may be physically and/or chemically surface treated for integrally bonding a hard coating to the PET film.
Claims31
An optical-quality polarized part comprising:
- an optical construct;
- a polarizing film comprising polyethylene terephthalate, wherein the film is integrally bonded to the optical construct;
- and
- a hard coating integrally bonded to the film.
An optical-quality polarized part comprising:
- an optical construct;
- a polarizing film comprising polyethylene terephthalate, wherein the film is integrally bonded to the optical construct;
- and
- a hard coating integrally bonded to the construct.
A method of optical-quality polarized part manufacture utilizing a polyethylene terephthalate polarizing film comprising the steps of:
- treating a surface of a polyethylene terephthalate polarizing film;
- forming an optical-quality part with the film at or near a front surface of an optical construct, wherein the film is integrally bonded to the optical construct;
- and
- integrally bonding a hard coating to at least one of the film and the optical construct.
Dependencies are inferred from the claim text.