Image Information Obtained Using a Charge-Coupled Device (CCD) Camera During an Immersion Liquid Evaporation Process for Measuring the Refractive Index of Solid Particles

被引：1

作者：

Niskanen, Ilpo ^{[1
,2
]}

Sutinen, Veijo ^{[3
]}

Thungstrom, Goeran ^{[2
]}

Raty, Jukka ^{[3
]}

机构：

[1] Univ Oulu, Fac Technol, Struct & Construct Technol, Oulu, Finland

[2] Mid Sweden Univ, Dept Elect Design, Sundsvall, Sweden

[3] Univ Oulu, Unit Measurement Technol MITY, Kajaani, Finland

来源：

APPLIED SPECTROSCOPY | 2018年 / 72卷 / 06期

关键词：

Refractive index; charge-coupled device camera; CCD camera; liquid mixture; evaporation; image immersion liquid method; calcium fluoride; CaF2; barium fluoride; BaF2;

D O I：

10.1177/0003702818756660

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The refractive index is a fundamental physical property of a medium, which can be used for the identification and purity issues of all media. Here we describe a refractive index measurement technique to determine simultaneously the refractive index of different solid particles by monitoring the transmittance of light from a suspension using a charge-coupled device (CCD) camera. An important feature of the measurement is the liquid evaporation process for the refractive index matching of the solid particle and the immersion liquid; this was realized by using a pair of volatile and non-volatile immersion liquids. In this study, refractive indices of calcium fluoride (CaF2) and barium fluoride (BaF2) were determined using the proposed method.

引用

页码：908 / 912

页数：5