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US 12,055,797 B2Granted
Contact lens with selective wavelength transmittance
AssigneeMenicon Singapore Pte Ltd.
InventorsStephen D. Newman, Tasuku Watanabe
Life of this patent
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Abstract
A contact lens includes a body, a filtering characteristic of blocking at least some light with wavelengths between 400 nanometers and 500 nanometers from transmitting through the body, and a transmittance characteristic of transmitting at least some light with wavelengths above 500 nanometers through the body.
Claims22
A contact lens, comprising:
- a body;
- a filtering characteristic of comprising blocking at least 50% of light with wavelengths between 400 nanometers and 500 nanometers from transmitting through the body;
- and
- a transmittance characteristic of comprising transmitting at least some light with wavelengths above 500 nanometers through the body, wherein:
- the body is made, at least in part, of a polymer;
- the contact lens further comprises a blocking agent incorporated into the polymer, the blocking agent causing the filtering characteristic;
- and
- the blocking agent comprises at least one of a triphenylphosphine or a triphenylphosphine derivative.
5 more elements
A method of making a contact lens, comprising:
- applying a liquid lens material into a spin casting mold;
- and
- spinning the spin casting curing the liquid lens material within the mold;
- wherein the liquid lens material includes comprises a blocking agent that has a characteristic of blocking at least 50% of light with wavelengths between 400 nanometers and 500 nanometers from passing through the liquid cured lens material, wherein the blocking agent comprises at least one of a triphenylphosphine or a triphenylphosphine derivative.
1 more element
A contact lens, comprising:
- a cast body, the cast body including:
- a first blocking agent comprising at least one of a triphenylphosphine or a triphenylphosphine derivative, a filtering characteristic of blocking configured to block at least 50% of light with wavelengths between 400 nanometers and 500 nanometers from transmitting through the cast body and to have a first transmittance characteristic of transmitting at least 50% of light with wavelengths above 500 nanometers through the cast body, and a second transmittance characteristic of transmitting at least some light with wavelengths below 400 nanometers through the cast body;
- and
- a second blocking agent configured to block at least some light with wavelengths below 360 nanometers from transmitting through the cast body;
- wherein the cast body comprises one of a silicone material or a hydrogel material.
2 more elements
Dependencies are inferred from the claim text.