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US 10,502,981 B2Granted
Optical filter with color enhancement
AssigneeGary Sharp Innovations, LLC
InventorGary D. Sharp
Life of this patent
Estimating the term…
Abstract
An eyewear lens is described that provides polarization filtering and spectral filtering using polarization interference. The lens produces enhanced saturation and colorfulness, increasing enjoyment when observing commonly encountered imagery. The lens can be configured to optimize accuracy/efficiency when performing a task involving colored imagery, and can improve performance in sports. The lens can further be helpful for color discrimination by those with certain types of color vision deficiency.
Claims45
An eyewear lens, comprising:
- a lens having a spectral transmission with a sinusoidal shape having a peak at each of the colors of long-wavelength blue, green, and red and a valley at each of the colors of high-energy blue, cyan, and yellow/orange, wherein the lens includes a retarder stack that generates only two output impulses from a polarized impulse input.
An eyewear lens, comprising:
- a lens having a spectral transmission with a sinusoidal shape having a peak at each of the colors of long-wavelength blue, green, and red and a valley at each of the colors of high-energy blue, cyan, and yellow/orange;
- wherein the transmission at the peaks is greater than four times the transmission at the valleys.
An eyewear lens, comprising:
- a stack of layers, including:
- a first protective substrate;
- a polarizer;
- a retarder stack that generates only two output impulses from a polarized impulse input, wherein the retarder stack provides only four to six waves of retardation in the green wavelength range;
- a second polarizer;
- and
- a second protective substrate.
4 more elements
Dependencies are inferred from the claim text.