Device and method for double-barrelled angle measurement

Abstract

The invention provides a device and a method for double-barrelled angle measurement. The device comprises two autocollimators, two autocollimator adjusting supports, a rotary table which is connected with one of the autocollimator adjusting supports through a connecting arm, a pedestal which fixes the other autocollimator adjusting support through a vertical arm, a main shaft, a multidimensional adjusting support, and a bearing seat. The vertical arm is perpendicular to the pedestal. The main shaft is disposed on a center of the rotary table and runs through the rotary table, and is fixed together with the pedestal. The multidimensional adjusting support is fixed right above the main shaft. The bearing seat is fixed right above the multidimensional adjusting support. Combining the double-barrelled test device with the double-barrelled angle measurement method, optical dihedral angles, light beam slip angles, and angle absolute values can be measured. The device and the method are non-contact measurement, the operation process is simple and efficient, with good measuring repeatability and high precision, and repeatability precision can reach 1''. The device and the method can reduce impact of a side-erect placement face and placement precision, and equipment cost is low.

Description

【Technical field】 [0001] The invention relates to a photoelectric measuring instrument, in particular to a double-tube angle measuring device and a testing method. 【Background technique】 [0002] There are two commonly used methods for measuring the angle of a prism: 1. Measure the optical dihedral angle of a prism with an autocollimator and a standard block comparison method. This method is based on the full contact between the optical surface of a prism and the reference plane. This method of contact is easy to damage the smoothness of the optical surface, and at the same time, because the optical surface and the reference plane often cannot be completely coincident, it greatly affects the measurement accuracy; Only the absolute measurement of the angle can be realized, and since the two optical surfaces of the angle to be measured need to be adjusted separately during the measurement, the image adjustment process often needs to be adjusted repeatedly, thus affecting the m...

AI Technical Summary

Problems solved by technology

[0002] There are two commonly used measuring methods of prism angle at present: 1. Measure the optical dihedral angle of prism with autocollimator and standard block comparison method. This method is based on the full contact between the optical surface of a prism and the reference plane. This method of contact is easy to damage the smoothness of the optical surface, and at the same time, because the optical surface and the reference plane often cannot be completely coincident, it greatly affects the measurement accuracy; Only the absolute measurement of the angle can be realized, and since the two optical surfaces of the angle to be measured need to be adjusted separately during the measurement, the image adjustment process often needs repeated adjustments, which affects the measurement efficiency

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