Title: Shark-Hartmann pre-sensor based on Fourier spectral filter module
Application Number: 200610113551 Application Date: 2006.09.30
Publication Number: 1955701 Publication Date: 2007.05.02
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01J9/00;G01M11/02;G02B27/00;G01N21/17;A61B5/00
Applicant(s) Name: Inst. of Photoelectric Technology, CAS Address:
Inventor(s) Name: Zhang Ang;Rao Changhui;Zhang Yudong
Attorney & Agent: guanling chengjin yu
Abstract:
    A Hack-Hartmann wavefront transducer based on Fourier frequency spectrum filtering module consists of reference optical source, reflector, beam contracting system, lens array, matching lens set and photoelectric detector. It is featured as connecting Fourier frequency spectrum filtering module for suppressing image noise in low S-N ratio behind photoelectric detector, carrying out Fourier transform on said detector by said module then carrying out filtering process and signal-restoration.
Time: 7
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