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Adjusting a Traverse

Adjusting a Traverse

In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...

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In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

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High-precision rolling angle measurement for a three-dimensional collimator.

Yang Gao, Xingshu Wang, Zongsheng Huang

|October 17, 2014

Summary

This summary is machine-generated.

We developed a precise rolling angle measurement technique for collimators, improving 3D angular deformation measurement accuracy. This new method achieves subarcsecond precision, outperforming traditional 2D techniques.

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Area of Science:

Optics and Photonics
Metrology
Mechanical Engineering

Background:

Traditional 2D techniques limit the precision of angular deformation measurements.
Collimators are crucial components in various optical and measurement systems.

Purpose of the Study:

To propose a precise rolling angle measurement method for collimators.
To enhance the application of collimators in 3D angular deformation measurement.

Main Methods:

Utilizing a point array image projected by a collimated beam for rolling angle measurement.
Developing and applying a specific algorithm for measurement error estimation.
Analyzing point array characteristics (distribution, resolution, area) for optimization.

Main Results:

Achieved subarcsecond precision in rolling angle measurement.
Demonstrated superior performance compared to traditional 2D methods through simulations and experiments.
Optimized point array parameters for enhanced measurement accuracy.

Conclusions:

The proposed method significantly improves the precision of rolling angle measurement for collimators.
This advancement extends the applicability of collimators in high-precision 3D angular deformation measurements.
The developed technique offers superior performance over existing methods.