4-1/8" dia NEC lens

4-1/8" dia NEC lens

I was looking around online and found this NEC tv projection lens. I called the store and found out that the focal length of the lens is 5-1/2" (~139.7mm). Is it possible to make this lens work for a 15" lcd in combination with a 220mm and a 330 mm fl fresnel? Any help would be greatly appreciated.
 
yes, but you would hate it

The lCD has to be placed just about 1 cm from such a lens, so you could use the 15" LCD if you put it there. But the lens would only "see" a circle of about 4.5" diameter of the LCD. So your projected image would be a 350 pixel by 350 pixel circle.

You could add a strong negative lens to make the focal length longer. But that would probably give you a very distorted image. All of the corrections built into the projection lens would be cancelled.