Title:
LENS OPTICAL-CHARACTERISTICS MEASURING DEVICE, LENS OPTICAL-CHARACTERISTICS MEASURING METHOD, PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/059355
Kind Code:
A1
Abstract:
Provided is a lens optical-characteristics measuring device that can measure the optical characteristics of a lens, after cancelling an obstruction caused by an optical-measurement obstacle in an optical path. This lens optical-characteristics measuring device (1) includes a measurement calculation unit (13), with the measurement calculation unit (13) including an optical measurement obstruction cancelling unit, and the optical measurement obstruction cancelling unit including a phase-only correlation processing unit (131). The phase-only correlation processing unit (131): acquires test lens image data from within measurement information generated by a light receiving unit (19); subjects the test lens image data to a Fourier transform and extracts test lens phase data; combines the test lens phase data with reference phase data and thereby generates combined phase data; subjects the combined phase data to an inverse Fourier transform and thereby generates phase-only correlation image data; and generates optical characteristics information for the test lens from the phase-only correlation image data.
Inventors:
KOIDE TAMAKI (JP)
Application Number:
PCT/JP2019/037407
Publication Date:
April 01, 2021
Filing Date:
September 24, 2019
Export Citation:
Assignee:
REXXAM CO LTD (JP)
International Classes:
G01M11/02
Foreign References:
| JP6577689B1 | 2019-09-18 | |||
| JP2010230578A | 2010-10-14 | |||
| JP2016057080A | 2016-04-21 | |||
| JP6564545B1 | 2019-08-21 | |||
| JP2004125632A | 2004-04-22 | |||
| US20140340672A1 | 2014-11-20 | |||
| JP2019027945A | 2019-02-21 | |||
| JP2008299140A | 2008-12-11 | |||
| JP6581325B1 | 2019-09-25 |
Attorney, Agent or Firm:
TSUJIMARU Koichiro et al. (JP)
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