Title:
屈折率分布計測方法および屈折率分布計測装置
Document Type and Number:
Japanese Patent JP4895409
Kind Code:
B2
Abstract:
A method includes measuring a transmitted wavefront of a test object by introducing reference light into the test object arranged in a medium having a refractive index different from a refractive index of the test object, and calculating a refractive index distribution of the test object by using a measurement result of the transmitted wavefront. The measuring step measures a first transmitted wavefront for a first wavelength and a second transmitted wavefront for a second wavelength different from the first wavelength. The calculating step calculates the refractive index distribution of the test object by removing a shape component of the test object utilizing measurement results of the first and the second transmitted wavefront, and a transmitted wavefront of a reference object arranged in the medium for each of the first and second wavelengths. The reference object has the same shape as the test object and a specific refractive index distribution.
More Like This:
Inventors:
Tomohiro Sugimoto
Application Number:
JP2010119558A
Publication Date:
March 14, 2012
Filing Date:
May 25, 2010
Export Citation:
Assignee:
Canon Inc
International Classes:
G01M11/02; G01M11/00; G01N21/45
Domestic Patent References:
| JP2006200999A | ||||
| JP3225259A | ||||
| JP2005201724A | ||||
| JP2005106835A | ||||
| JP2010151578A |
Other References:
Ranjbar S , et. al.,Nondestructive measurement of refractive index profile of optical fiber preforms using moire techniq,Proceedings of SPIE,2006年
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Atsushi Mizumoto