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US 8,845,095 B2Granted
Optical element for correcting color blindness
AssigneeNitto Denko Corporation
InventorsBrett T. Harding, Sheng Li, Amane Mochizuki, David T. Sisk
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Abstract
Described herein are devices, compositions, and methods for improving color discernment.
Claims21
A device for improving color discernment comprising:
- an optical element comprising a luminescent compound in a substantially transparent matrix;
- wherein the optical element has a peak wavelength of visible absorption of about 540 nm to about 550 nm, wherein the luminescent compound is:
A device for improving ability to distinguish colors comprising:
- an optical element comprising a luminescent compound dispersed in a matrix material;
- the optical element is configured to absorb and emit visible light so that when an object or an image is viewed through the optical element, a first color having a first set of color coordinates is converted to a second color having a second set of color coordinates to aid in distinguishing colors;
- and
- the distance between the first set of color coordinates and the second set of color coordinates is at least about 0.02 color coordinate units.
1 more element
Dependencies are inferred from the claim text.