Use of retinal nerve fiber layer birefringence as an addition to absorption in retinal scanning for biometric purposes

被引：4
|
作者：
Agopov, Mikael [1 ]
Gramatikov, Boris I. [2 ]
Wu, Yi-Kai [2 ]
Irsch, Kristina [1 ]
Guyton, David L. [2 ]
机构：
[1] Heidelberg Univ, Kirchoff Inst Phys, D-69120 Heidelberg, Germany
[2] Johns Hopkins Univ, Sch Med, Wilmer Inst, Krieger Childrens Eye Ctr, Baltimore, MD 21287 USA
来源：
APPLIED OPTICS | 2008年 / 47卷 / 08期
关键词：
D O I：
10.1364/AO.47.001048
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We built a device sensitive to the bireffingence of the retinal nerve fiber layer for biometric purposes. A circle of 20 degrees diameter on the retina was scanned around the optic disk with a spot of light from a 785 nm laser diode. The nonbirefringent blood vessels indenting or displacing the retinal nerve fiber layer were seen as "blips" in the measured bireftingence-derived signal. For comparison, the reflection-absorption signature of the blood vessel pattern in the scanned circle was also measured. The bireftingence-derived signal proved to add useful information to the reflectance-absorption signature for retinal biometric scanning. (c) 2008 Optical Society of America.
引用
收藏
页码：1048 / 1053
页数：6
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