Abstract

We have developed a completely new type of optical anti-aliasing filter that offers both high performance and low cost. In contrast to other wavefront-based anti-aliasing filters, this new filter can operate with multiple aperture stop positions. And in addition, this type of filter sufficiently attenuates all spatial frequencies beyond the CCD detector bandlimit. Many of the most popular anti-aliasing filters currently in use just null out very narrow bands of spatial frequencies.

© 1998 Optical Society of America