US 12,080,213 B2
Apparatus and method for reducing photophobia in electronic screens
Joel Persinger, Wesley Chapel, FL (US); Robert Steinberger, Palm Harbor, FL (US); and Joseph Kenyon, Gainesville, FL (US)
Filed by Freedom Scientific, Inc., Clearwater, FL (US)
Filed on Oct. 13, 2022, as Appl. No. 17/964,954.
Claims priority of provisional application 63/255,274, filed on Oct. 13, 2021.
Prior Publication US 2023/0169904 A1, Jun. 1, 2023
Int. Cl. G09G 3/20 (2006.01); A61N 5/06 (2006.01); G09G 5/36 (2006.01)
CPC G09G 3/2003 (2013.01) [A61N 5/06 (2013.01); G09G 5/363 (2013.01); A61N 2005/0663 (2013.01); G09G 2340/06 (2013.01); G09G 2380/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of reducing instances of photophobia in users who are viewing an image upon an electronic screen, the image having a contrast and colors, the method employing a processing unit and a filtering unit, the method comprising the following steps:
generating an RGB video signal by way of the processing unit, the RGB video signal being passed to the filtering unit;
converting the RGB video signal to an HSL video signal within the filtering unit, the conversion allowing the luminance of the HSL video signal to be decreased or increased without changing the colors of the image;
filtering the HSL video signal to remove any HSL video signals having a wavelength below approximately 500 nm;
increasing the total luminance of the filtered HSL video signal;
displaying the image upon the electronic screen using the filtered HSL video signal with increased luminance, whereby the removal of wavelengths below approximately 500 nm reduces instances of photophobia while increasing the luminance maintains the image contrast.