Patent ID: 6791736
Filing Date: 2004-09-14
Classification: G01J,G02B

Abstract:
An optical device for receiving input light and for acting on the input light to produce output light, said optical device comprising:a first reflector; and a second reflector supported in a spaced-apart, confronting relationship with the first reflector such that said input light received by the optical device, at least potentially, undergoes multiple reflections between the first and second reflectors and at least a selected one of the first and second reflectors is configured to subject each one of a plurality of different portions of said input light to one of a plurality of different reflectance values to produce an emitted light passing through the selected reflector in a way which is combinable to generate said output light, the selected one of the reflectors including a varying reflectance profile which defines said plurality of different reflectance values wherein said varying reflectance profile is a continuous, linear wedge function.