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Error compensation for long-distance measurements with a photoelectric autocollimator

机译:光电自准直仪进行长距离测量的误差补偿

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摘要

Although autocollimators enable noncontact measurement, their performance is limited in large-scale and long-distance applications because of errors caused by nonideal point light sources. Therefore, we analyze this type of measurement error, including the error source and the equations used to describe the irradiance distribution of the light spot. A two-dimensional exponential approximation formula is used to express the light irradiance distribution and compensate the spot imaging errors. Experimental results show that the measure-ment error could be reduced by sixfold. Therefore, the proposed compensation algorithm can be applied to autocollimator measurements over distances.
机译:尽管自动准直仪可以进行非接触式测量,但是由于非理想点光源引起的误差,它们在大型和长距离应用中的性能受到限制。因此,我们分析了这种类型的测量误差,包括误差源和用于描述光斑辐照度分布的方程式。使用二维指数近似公式来表示光辐照度分布并补偿点成像误差。实验结果表明,测量误差可以减少六倍。因此,所提出的补偿算法可以应用于距离上的自动准直仪测量。

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