Wavefront coding optics

Optical: systems and elements – Lens – Annular zonal correcting

Reexamination Certificate

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Details

C359S558000, C359S279000, C382S279000, C250S216000, C356S124500

Reexamination Certificate

active

06842297

ABSTRACT:
Improved Wavefront Coding Optics, which apply a phase profile to the wavefront of light from an object to be imaged, retain their insensitivity to focus related aberration, while increasing the heights of the resulting MTFs and reducing the noise in the final images. Such improved Wavefront Coding Optics have the characteristic that the central portion of the applied phase profile is essentially flat (or constant), while a peripheral region of the phase profile around the central region alternately has positive and negative phase regions relative to the central region.

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