Patent ID: 7643204

Claim:
A system, comprising: a source of light producing light along an optical axis train; a first optical element, located along said optical axis train and receiving said light from said source of light; a digitally controllable element which is located along said optical axis train and optically downstream from said first optical element, and receives light which has been modified by said first optical element, said digitally controllable element receiving a command for digital control of the light to be passed by said digitally controllable element and responsively altering said light responsive to said command; a second optical element, optically downstream of said digitally controllable element, receiving light from said digitally controllable element and said second optical element modifying the light that has been altered by said digitally controllable element; and a camera device, associated with said second optical element, said camera device receiving information; and a controller, which changes light passing characteristics of said digitally controllable element based on said information from said camera device.