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Patent Searching and Data


Title:
LENS OPTICAL CHARACTERISTICS MEASUREMENT DEVICE, LENS OPTICAL CHARACTERISTICS MEASUREMENT METHOD, PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/250452
Kind Code:
A1
Abstract:
Provided is a lens optical characteristics measurement device that is compact, does not tend to be influenced by dust, stray light, or the like, and is capable of highly accurate optical measurement of a lens. This lens optical characteristics measurement device 1 uses a Fourier transform and includes a phase-only-correlation processing unit (131). The phase-only-correlation processing unit (131) acquires subject lens image data within measurement information generated by a light reception unit (19), generates subject lens phase data by subjecting the subject lens image data to a Fourier transform, generates combined phase data by combining the subject lens phase data with reference phase data, generates phase-only-correlation image data by subjecting the combined phase data to an inverse Fourier transform, and generates optical characteristics information for the subject lens from the phase-only-correlation image data.

Inventors:
KOIDE TAMAKI (JP)
Application Number:
PCT/JP2019/029273
Publication Date:
December 17, 2020
Filing Date:
July 25, 2019
Export Citation:
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Assignee:
REXXAM CO LTD (JP)
International Classes:
G01M11/02; G01M11/00; G02B3/00
Foreign References:
JP2010230578A2010-10-14
JP2016057080A2016-04-21
US20140340672A12014-11-20
JP2019027945A2019-02-21
JP2008299140A2008-12-11
JP2007511278A2007-05-10
Attorney, Agent or Firm:
TSUJIMARU Koichiro et al. (JP)
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