Rigid geometric-optics autocollimation model and its theoretical analysis based on ray-tracing method

Zhu, Fan; Tan, Xinran; Tan, Jiubin; Fan, Zhigang

doi:10.1117/12.2242768

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…where ∆dε z (∆dε y ) is the difference in the yaw (pitch) results between the two measurements, ∆ε z0 is the difference between the initial values of yaw in the first measurement position for the two measurements, and ∆ε y0 is the corresponding difference for pitch. Thus, the defocusing amount can be calculated based on the slope of the linear relationship in equation (11).…”

Section: Methods For Determination Of Defocusing Amountmentioning

confidence: 99%

“…It is clear that the difference between the two experiments is linearly proportional to the measurement distance, with the estimated standard deviation for the regression line being 0.14 arcsec, which is consistent with the above analysis. According to equation (11), the defocusing amount of the developed 6DOF system is 14.4 mm.…”

Section: Experimental Determination Of the Defocusing Amountmentioning

confidence: 99%

“…Systematic errors are classified into several types such as error crosstalk, fabrication and installation deviation of optical elements, and installation errors of the detector. Zhu et al bulit a rigid geometric-optics autocollimation model to analyse the effects of crosstalk, defocusing, and measurement distance on autocollimation measurements [11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of detector installation error on the measurement accuracy of multi-degree-of-freedom geometric errors of a linear axis

Zheng

Feng

Zhang

et al. 2020

Meas. Sci. Technol.

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A linear axis is the key component of several mechanical machines, especially of computer numerical control machine tools. The simultaneous measurement of the geometric motion errors of a linear axis is indispensable to compensate the machine errors, which improves the accuracy of machine tools. The principle of laser collimation is widely used for measuring the multi-degree -of-freedom (MDOF) geometric motion errors of a linear axis. However, installation errors of the detectors affect the measurement accuracy. In this study, we have proposed, for the first time, a measurement model for investigating the influence of all detector installation errors on the accuracy of the simultaneous measurement of MDOF geometric motion errors in a linear axis. The effect of detector installation errors on the horizontal straightness, vertical straightness, pitch, and yaw are analyzed using the homogeneous transformation method, which indicates that angular installation errors of detectors along the X 0 -axis direction can cause a crosstalk between the two straightness errors and between pitch and yaw errors. In addition, translational installation errors of position -sensitive detectors in the X 0 -axis direction, which is often called the defocusing amount, has a significant effect on the pitch and yaw measurements. To elucidiate the effect of defocusing, a measurement model was verified by both Zemax simulation and experiments. The experimental results indicate that the maximum deviation of the measured results obtained using the proposed model from that obtained using a Renishaw XL-80 interferometer can be greatly reduced by compensating the measurement errors induced by defocusing.

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Section: Methods For Determination Of Defocusing Amountmentioning

confidence: 99%

Section: Experimental Determination Of the Defocusing Amountmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of detector installation error on the measurement accuracy of multi-degree-of-freedom geometric errors of a linear axis

Zheng

Feng

Zhang

et al. 2020

Meas. Sci. Technol.

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Modeling and optimization of the integrated TDICCD aerial camera pointing error

Zhou

Liu

et al. 2020

Appl. Opt.

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Aerial cameras are widely used in a number of fields. Various mechanical errors cannot be ignored with the improvement of imaging quality requirements. This paper introduces an integrated time delay integration charge coupled device (TDICCD) aerial camera. Compared with traditional aerial cameras, it can significantly improve shooting efficiency and imaging quality under similar load conditions. This paper first analyzes mechanical errors of the integrated TDICCD aerial camera and establishes a pointing error model based on ray tracing, then performs model parameter identification using a genetic algorithm, and completes error compensation. Finally, test results demonstrate that the compensation of the pointing error can effectively improve pointing accuracy of the optical axis. The mean of comprehensive errors was reduced by an order of magnitude, and the variance of comprehensive errors was reduced from 1.0075 ( m m ) 2 to 0.0543 ( m m ) 2 .

show abstract

Rigid geometric-optics autocollimation model and its theoretical analysis based on ray-tracing method

Cited by 2 publications

References 8 publications

Effect of detector installation error on the measurement accuracy of multi-degree-of-freedom geometric errors of a linear axis

Effect of detector installation error on the measurement accuracy of multi-degree-of-freedom geometric errors of a linear axis

Modeling and optimization of the integrated TDICCD aerial camera pointing error

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