Research on improving the measuring accuracy of laser autocollimator used over long distance

被引：1

作者：

Zhao, MR ^{[1
]}

Lin, YC ^{[1
]}

Zhang, P ^{[1
]}

Qi, YY ^{[1
]}

机构：

[1] Tianjin Univ, State Key Lab Preicis Measuring Technol & Instrum, Tianjin 300072, Peoples R China

来源：

OPTICAL DESIGN AND TESTING | 2002年 / 4927卷

关键词：

autocollimator; CCD; diode laser; optical design; image processing;

D O I：

10.1117/12.471427

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The methods of how to improve the measuring accuracy of the autocollimator used over long outside distance are introduced in this paper. Pulse diode laser is adopted as light source and CCD is used as signal receiver. By the optical design of common-path and the signal processing such as smoothing filtering, interpolating image center, eliminating anomaly data and identifying false points, a higher stability of 2.5" and a better repeatability of 5.6" are achieved in the positioning measurement over ten meters. The principle of auto-collimation, the optical system design, the signal processing and the experimental results are expatiated in this paper.

引用

页码：300 / 304

页数：5