Touch screen saver

Abstract

A stack of laminated transparent lenses consists of two alternating optically clear materials in intimate contact. The materials are a plastic lens and clear adhesive. The adhesive is uninterrupted. The lens and the adhesive have refraction mismatch of less than 0.2. A tab portion is part of each lens acts as an aid in peeling away the outermost lens after contamination of the lens layer during racing conditions. The lens stack can be mounted to the posts on the face shield or laminated directly to a windshield.

1 - 9 . (canceled) 
     
     
         10 . A lens stack configured to protect a surface, the lens stack comprising:
 at least one optically clear lens layer having a lens layer index of refraction; and   an optically clear adhesive layer having an adhesive index of refraction, the optically clear adhesive layer applied to a lower surface of the protective lens stack,
 wherein the lens index of refraction and the adhesive index of refraction are matched to within about 0.2, wherein the lens stack is configured to be removably applied to a surface so that there is no air between the surface and the lens stack and so that, upon removal, the lens stack exposes a clean surface underneath the lens stack. 
   
     
     
         11 . The lens stack of  claim 10 , wherein the lens layer index of refraction and the adhesive index of refraction are matched to within about 0.12. 
     
     
         12 . The lens stack of  claim 11 , wherein the lens layer index of refraction and the adhesive index of refraction are in the range of about 1.40 to about 1.52. 
     
     
         13 . The lens stack of  claim 11 , wherein the lens layer index of refraction and the adhesive index of refraction are matched to within about 0.03. 
     
     
         14 . The lens stack of  claim 13 , wherein the lens layer index of refraction and the adhesive index of refraction are in the range of about 1.47 to about 1.498. 
     
     
         15 . The lens stack of  claim 10 , wherein the lens stack is configured to be removably applied to a surface of a video display such that the lens stack can be removed from the video display to expose a clean display surface underneath the lens stack. 
     
     
         16 . The lens stack of  claim 10 , wherein the at least one lens layer is a single lens layer. 
     
     
         17 . The lens stack of  claim 10 , wherein the lens stack comprises at least two optically clear lens layers adhesively affixed to one another such that at least one upper lens layer is removable from the lens stack, each lens layer having a lens layer index of refraction,
 wherein each removable lens layer is held to the lens stack with an optically clear intermediary adhesive layer interposed between each successive lens, the optically clear intermediary adhesive layer having an intermediary adhesive index of refraction, and   wherein each lens layer index of refraction, the adhesive index of refraction and the intermediary adhesive index of refraction are matched to within about  0 . 2 .   
     
     
         18 . The lens stack of  claim 10 , wherein the lens stack is configured so that it does not add reflections detectable by the eyes of an operator when the lens stack is attached to the surface. 
     
     
         19 . The lens stack of  claim 10 , wherein the at least one optically clear lens layer comprises polyethylene terephalate. 
     
     
         20 . The lens stack of  claim 10 , wherein the thickness of the lens stack is about 0.5 mils to about 15 mils. 
     
     
         21 . The lens stack of  claim 10 , wherein the surface has a surface index of refraction. 
     
     
         22 . The lens stack of  claim 21 , wherein the lens index of refraction, the adhesive index of refraction, and the surface index of refraction are matched to within about 0.2 
     
     
         23 . A video display comprising:
 a video display device having a display surface; and   an optically clear lens stack attachable to the display surface, the optically clear lens stack comprising:   at least one optically clear lens layer having a lens layer index of refraction; and   an optically clear adhesive layer having an adhesive index of refraction, the optically clear adhesive layer applied to a lower surface of the protective lens stack;
 wherein the lens index of refraction and the adhesive index of refraction are matched to within about 0.2, and wherein the lens stack is configured to be removably applied to the display surface so that there is no air between the display surface and the optically clear lens stack and so that, upon removal, the lens stack exposes a clean display surface underneath the lens stack. 
   
     
     
         24 . The video display of  claim 23 , wherein the lens layer index of refraction and the adhesive index of refraction are matched to within about 0.12. 
     
     
         25 . The video display of  claim 24 , wherein the lens layer index of refraction and the adhesive index of refraction are in the range of about 1.40 to about 1.52. 
     
     
         26 . The video display of  claim 25 , wherein the lens layer index of refraction and the adhesive index of refraction are in the range of about 1.47 to about 1.498. 
     
     
         27 . The video display of  claim 23 , wherein the at least one lens layer is a single lens layer. 
     
     
         28 . The video display of  claim 23 , wherein the at least one optically clear lens layer comprises polyethylene terephalate. 
     
     
         29 . The video display of  claim 23 , wherein the at least one lens layer comprises at least two optically clear lens layers adhesively affixed to one another such that at least one upper lens layer is removable from the protective lens stack, each lens layer having a lens layer index of refraction,
 wherein each removable lens layer is held to the protective lens stack with an optically clear intermediary adhesive layer interposed between each successive lens, the optically clear intermediary adhesive layer having an intermediary adhesive index of refraction, and   wherein each lens layer index of refraction, the adhesive index of refraction and the intermediary adhesive index of refraction are matched to within about 0.2.   
     
     
         30 . The video display of  claim 23 , wherein the lens stack is configured so that it does not add reflections detectable by the eyes of an operator when attached to the display surface. 
     
     
         31 . The video display of  claim 23 , wherein the display surface has a surface index of refraction, and wherein the lens index of refraction, the adhesive index of refraction, and the surface index of refraction are matched to within about 0.2. 
     
     
         32 . A method of protecting a display surface of a video display device, the method comprising attaching a lower surface of an optically clear lens stack to the display surface so that there is no air between the display surface and the optically clear lens stack and so that, upon removal, the lens stack exposes a clean surface underneath the lens stack,
 wherein the optically clear lens stack comprises at least one optically clear lens layer having a lens layer index of refraction and an optically clear adhesive layer having an adhesive index of refraction, the optically clear adhesive layer applied to the lower surface of the optically clear lens stack, and wherein the lens layer index of refraction and the adhesive index of refraction are matched to within about 0.2.