Abbe prism lens with improved focus and reduced flair

Abstract

An Abbe prism lens and lens array are disclosed. The lens comprises front lenses disposed on a front surface of the Abbe prism, rear lenses disposed on a rear surface of the Abbe prism, a front bottom reflecting surface, a rear bottom reflecting surface, a left top reflecting surface, and a right top reflecting surface. An aperture cover is positioned over the front surface of the Abbe prism lens and a field cover is positioned over the rear surface of the Abbe prism lens. The aperture cover comprises aperture holes encircling the aspherical front lenses. The field cover comprises field holes encircling the aspherical rear lenses. Light enters the Abbe prism lens and reflects off the front bottom reflecting surface, reflects off the left top reflecting surface and the right top reflecting surface, reflects off the rear bottom reflecting surface, and exits the rear lens of the Abbe prism lens.

1 . A lens comprising:
 an Abbe prism, the Abbe prism comprising an aspherical front lens disposed on a front surface of the Abbe prism and an asherical rear lens disposed on a rear surface of the Abbe prism.   
     
     
         2 . The lens of  claim 1 , further comprising:
 an aperture cover on the front surface of the Abbe prism, the aperture cover comprising an aperture hole encircling the aspherical front lens.   
     
     
         3 . The lens of  claim 1 , further comprising:
 an aperture cover over the front surface of the Abbe prism, the aperture cover comprising an aperture hole for allowing light to enter the aspherical front lens.   
     
     
         4 . The lens of  claim 1 , the Abbe prism further comprising:
 a front bottom reflecting surface;   a rear bottom reflecting surface;   a left top reflecting surface; and   a right top reflecting surface;
 where light enters the aspherical front lens of the Abbe prism, reflects off the front bottom reflecting surface, reflects off the left top reflecting surface and the right top reflecting surface, reflects off the rear bottom reflecting surface, and exits the aspherical rear lens of the Abbe prism. 
   
     
     
         5 . The lens of  claim 4 , where the angle between the front bottom reflecting surface and the rear bottom reflecting surface is between 1 and 179 degrees. 
     
     
         6 . The lens of  claim 4 , where the angle between the left top reflecting surface and the right top reflecting surface is between 1 and 90 degrees. 
     
     
         7 . A lens array comprising:
 a plurality of Abbe prisms, each Abbe prism comprising an aspherical front lens disposed on a front surface of the Abbe prism and an asherical rear lens disposed on a rear surface of the Abbe prism.   
     
     
         8 . The lens array of  claim 7 , each Abbe prism further comprising:
 a front bottom reflecting surface;   a rear bottom reflecting surface;   a left top reflecting surface; and   a right top reflecting surface;
 where light enters the aspherical front lens of the Abbe prism, reflects off the front bottom reflecting surface, reflects off the left top reflecting surface and the right top reflecting surface, reflects off the rear bottom reflecting surface, and exits the aspherical rear lens of the Abbe prism. 
   
     
     
         9 . The lens array of  claim 8 , where the angle between the front bottom reflecting surface and the rear bottom reflecting surface is between 1 and 179 degrees. 
     
     
         10 . The lens array of  claim 8 , where the angle between the left top reflecting surface and the right top reflecting surface is between 1 and 90 degrees. 
     
     
         11 . The lens array of  claim 7 , further comprising:
 an aperture cover positioned on the front surface of the plurality of Abbe prisms, the aperture cover comprising a plurality of aperture holes encircling the aspherical front lenses   
     
     
         12 . The lens array of  claim 7 , where the plurality of Abbe prisms are formed as one piece of transparent polymer.