High performance selective light wavelength filtering

Abstract

A system may be provided that comprises a substrate and a selective light wavelength filter that selectively blocks between 5 and 50% of light having a wavelength at or near 400-460 nm. The system may comprise any one of, or some combination of: a window, automotive glass, a light bulb, a flash bulb, fluorescent lighting, LED lighting, instrumentation, a display system, a visual system, a television, or a computer monitor.

What is claimed is: 
     
         1 . An ophthalmic system comprising:
 a visible light wavelength filter that selectively blocks between 5 and 50% of light in a range of blue light wavelengths that includes 430 nm;
 wherein the filter is placed within corneal tissue, and wherein the yellowness index of the system is no more than 15.0. 
   
     
     
         2 . The system of  claim 1 , wherein the system includes a porphyrin dye. 
     
     
         3 . The system of  claim 1 , wherein the system includes a dye with a Soret band. 
     
     
         4 . The system of  claim 1 , wherein the system includes coumarin. 
     
     
         5 . The system of  claim 1 , wherein the system includes acridine based molecules. 
     
     
         6 . The system of  claim 1 , wherein the system includes a compound that mimics the transmission spectra of a Soret band. 
     
     
         7 . The system of  claim 1 , wherein the yellowness index of the system is no more than 10. 
     
     
         8 . The system of  claim 1 , wherein the yellowness index of the system is no more than 9. 
     
     
         9 . The system of  claim 1 , wherein the yellowness index of the system is no more than 7. 
     
     
         10 . The system of  claim 1 , wherein the yellowness index of the system is no more than 5. 
     
     
         11 . The system of  claim 1 , wherein the filter is applied directly into corneal tissue. 
     
     
         12 . The system of  claim 1 , wherein the filter is placed on human tissue. 
     
     
         13 . The system of  claim 12 , wherein the filter includes a chemical bond so the filter will not leach out in the surrounding corneal tissue.