Patent ID: 6046858
Filing Date: 2000-04-04
Classification: H04N

Abstract:
A color separation system configured to separate a beam of white light traveling along an optical axis into first, second, and third components having respective first, second, and third colors, the system comprising:a first dichroic filter positioned along the optical axis and having a first optical thickness, the first dichroic filter adapted to reflect the first component along a first path not parallel to the optical axis and to pass the second and third components;a second dichroic filter positioned along the optical axis and having a second optical thickness, the second dichroic filter adapted to reflect the second component along a second path not parallel to the optical axis and to pass the first and third components;a first aberration-compensating element positioned in the first path, the first aberration-compensating element having a third optical thickness equal to the second optical thickness; anda second aberration-compensating element positioned in the second path, the second aberration-compensating element having a fourth optical thickness equal to the first optical thickness.