Top > Search of International Patents > OPTICAL CHARACTERISTICS MEASURING APPARATUS, AND OPTICAL CHARACTERISTICS MEASURING METHOD

OPTICAL CHARACTERISTICS MEASURING APPARATUS, AND OPTICAL CHARACTERISTICS MEASURING METHOD

Foreign code F130007111
File No. S2011-0347-C0
Posted date Jan 11, 2013
Country WIPO
International application number 2012JP054940
International publication number WO 2012/118079
Date of international filing Feb 28, 2012
Date of international publication Sep 7, 2012
Priority data
  • P2011-043170 (Feb 28, 2011) JP
Title OPTICAL CHARACTERISTICS MEASURING APPARATUS, AND OPTICAL CHARACTERISTICS MEASURING METHOD
Abstract

Linearly-polarized light reaching a sample (S) via a polarizer is provided with retardation by the sample (S), and then reaches a movable mirror portion (131) and a fixed mirror portion (132) of a phase shifter (13) via a first polarizing plate (9) and a second polarizing plate (11). Measurement light reflected by these mirror portions is passed through an analyzer (15) and an imaging lens (17) by which an interference image is formed on a light-reception surface of a detector (19). At this time, by moving the movable mirror portion (131), an optical path length difference between a light flux reflected by the movable mirror portion (131) and a light flux reflected by the fixed mirror portion (132) can be continuously varied. As a result, the imaging intensity of the interference image detected by the detector (19) is continuously varied, and a composed waveform similar to an interferogram can be acquired. Subjecting the composed waveform to Fourier transform yields amplitude on a wavelength basis and a birefringent phase difference on a wavelength basis.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY,
  • ISHIMARU, ICHIRO
  • Inventor
  • ISHIMARU, ICHIRO
IPC(International Patent Classification)
Please contact us by E-mail or facsimile if you have any interests on this patent.

PAGE TOP

close
close
close
close
close
close