公开(公告)号：US10883880B2

公开(公告)日：2021-01-05

申请号：US16653379

申请日：2019-10-15

Applicant: Konica Minolta, Inc.

Inventor： Osamu Masuda ,  Kazuhiko Hirabayashi ,  Hirofumi Tanaka ,  Koji Nakashima

IPC: G01J4/04 ,  G01N21/21 ,  G02B5/30 ,  G01M11/00 ,  G02F1/1335 ,  G01M11/02

Abstract: An optical characteristic evaluation method evaluates unevenness of an optical characteristic in an optical film based on analysis of a polarized state of light transmitting through an optical film and an analyzer. The method includes the following, measuring a phase difference and an orientation angle in a plurality of positions; and quantifying and evaluating the unevenness of the optical characteristic based on a parameter of a vector of output light calculated by a formula 1 using a vector showing a polarized state of input light and a matrix showing a polarizing characteristic of the optical film and the analyzer. The formula 1 is as follows, formula 1: F2=M×F1, F1: Stokes vector or Jones vector of input light, F2: Stokes vector or Jones vector of output light, M: Mueller matrix or Jones matrix of the optical film as the evaluation target and the analyzer.