This will count as one of your downloads.
You will have access to both the presentation and article (if available).
In the process of using a less accurate digital autocollimator (with a claimed accuracy of 0.25 arc seconds), the authors also encountered the influence of various parameters in the measurement setup, but of a greater value. This led to additional research.
This paper presents an experimental analysis of the complex effects of the distance to the reflecting surface and its size, as well as the impact of non-flatness on the surface. The random errors of the autocollimator in different operating modes are also analyzed.
We present the results of research of the angle measurement system for direction measurements. Development of the system is based on the dynamic goniometer, whose operation is defined by continuous rotation of the platform with the autocollimating null-indicator. The measurements of angles between mirrors are provided by the null-indicator and optical encoder. The results of the system calibration with the use of standard optical polygon are presented. The computer simulation of the calibration process was carried out, and requirements to optical elements alignment accuracy were estimated.
View contact details
No SPIE Account? Create one
