Measurement of gradient refractive index profile using a birefringent lens

被引：7
|
作者：
Biswas, NS [1 ]
Sarkar, SK [1 ]
Basuray, A [1 ]
机构：
[1] UNIV CALCUTTA,DEPT APPL PHYS,OPT & OPTOELECTR SECT,CALCUTTA 700009,W BENGAL,INDIA
来源：
OPTICAL ENGINEERING | 1996年 / 35卷 / 02期
关键词：
gradient refractive index profile; birefringent lens; deflectometry; fringes;
D O I：
10.1117/1.600917
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The shape, depth, and maximum change in refractive index profile are of the most important parameters to be controlled when developing gradient refractive index (GRIN) lens blanks. Generally refractive index profiles are measured by standard interferometers such as Mach-Zhender, Twyman, and Shearing interferometers. These methods generate a large amount of data and need rigorous computation. A new kind of deflectometery is reported that can measure a GRIN profile using the interference pattern generated by a birefringent lens. Results based on this method are presented for radial GRIN glasses developed by Ag+-Na+ and Na+-Li+ ion exchange in alkali aluminosilicate glasses. (C) 1996 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页码：470 / 475
页数：6
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