Back to results
US 8,939,576 B2Granted
Optical element for correcting color blindness
AssigneeNitto Denko Corporation
InventorsBrett T. Harding, Sheng Li, Amane Mochizuki
Life of this patent
Estimating the term…
Abstract
Described herein are devices, compositions, and methods for improving color discernment.
Claims21
An ocular lens comprising:
- an optical element comprising a luminescent compound in a substantially transparent matrix;
- wherein the device is configured so that the optical element modifies a color of an object or image viewed through the optical element by a user to thereby allow the user to better distinguish colors;
- wherein the luminescent compound absorbs light at an absorption wavelength and emits light at an emission wavelength, wherein a human cone photopigment is substantially more sensitive to the emission wavelength than to the absorption wavelength;
- wherein the luminescent compound has an average wavelength of visible absorption of about 380 nm to about 450 nm.
1 more element
An ocular lens comprising:
- an optical element comprising a luminescent compound in a substantially transparent matrix;
- wherein the device is configured so that the optical element modifies a color of an object or image viewed through the optical element by a user to thereby allow the user to better distinguish colors;
- wherein the luminescent compound absorbs light at an absorption wavelength and emits light at an emission wavelength, wherein a human cone photopigment is substantially more sensitive to the emission wavelength than to the absorption wavelength;
- wherein the luminescent compound has an average wavelength of visible absorption of about 420 nm to about 480 nm.
1 more element
An ocular lens comprising:
- an optical element comprising a luminescent compound in a substantially transparent matrix;
- wherein the device is configured so that the optical element modifies a color of an object or image viewed through the optical element by a user to thereby allow the user to better distinguish colors;
- wherein the luminescent compound absorbs light at an absorption wavelength and emits light at an emission wavelength, wherein a human cone photopigment is substantially more sensitive to the emission wavelength than to the absorption wavelength;
- wherein the luminescent compound has an average wavelength of visible emission of about 500 nm to about 600 nm.
1 more element
Dependencies are inferred from the claim text.