360-DEG total-reflection prism and arrangement method thereof

Abstract

The invention discloses a 360-DEG total-reflection prism and an arrangement method thereof. The 360-DEG total-reflection prism comprises an upper cylindrical prism array and a lower cylindrical prism array annularly arranged on the same reference sphere; the upper cylindrical prism array and the lower cylindrical prism array are arranged symmetrically with the equatorial line of the reference sphere; central axes of rotation of the upper cylindrical prism array and the lower cylindrical prism array are coincident with the central axis of the reference sphere; a cylindrical prism in the upper cylindrical prism array and the lower cylindrical prism array is provided with three mutually-vertical reflecting planes and incident planes obliquely arranged with the reflecting planes; the incident plane of each cylindrical prism is tangent to the spherical surface of the reference sphere; and the prism axis of the incident surface of the cylindrical prism is intersected at the sphere center of the reference sphere. According to the 360-DEG total-reflection prism and the arrangement method thereof, defects that 360-DEG prisms in a single row have a measurement dead angle and each row of 360-DEG prisms has different central heights can be avoided, and measurement errors can be avoided.

Description

technical field [0001] The invention relates to an optical measuring instrument, in particular to a 360-degree total reflection prism and an arrangement method thereof. Background technique [0002] With the continuous improvement of engineering measurement accuracy and automation, the total station or range finder with automatic collimation, locking and tracking functions has broad application prospects in dynamic tracking measurement, automatic measurement and deformation monitoring. The reflective prism is an important part of the measurement system of the total station or rangefinder. Its function is to measure the angle, measure the distance, accurately aim at the target and signal reflect the target, so as to realize the measurement of the angle, distance and position of the system. At present, the main types of reflective prisms are single prism and prism group. When in use, the front sight of the total station telescope is precisely aligned with the center of the pri...

AI Technical Summary

Problems solved by technology

The acceptable incident light angle of the existing ordinary reflective prism is only ±45°. When measuring, it needs to be adjusted to face the direction of the light source, which cannot achieve arbitrary omnidirectional sighting, which brings inconvenience to the tracking and measurement work.

[0003] Although the chrome-plated steel ball developed on this basis can reflect light at 360 degrees, but because the intensity of the reflected light will be greatly reduced, it can only be used for very close-range measurements. The single-row 360-degree prism still has a measurement dead angle, no The real 360-degree prism, but in the multi-row 360-degree prism, the center height of different rows of prisms is different, there is a measurement error, and it can only measure the distance of more than 10m

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