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Theodolite external field infinite remote calibration method

A calibration method, theodolite technology, applied to instruments, measuring devices, etc., can solve problems such as focusing errors and achieve the effect of ensuring the accuracy of focusing

Inactive Publication Date: 2015-01-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for correcting the infinite distance in the field of theodolite, which solves the technical problem that there is a large error in the field focusing of large and medium-sized theodolites in the prior art

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  • Theodolite external field infinite remote calibration method
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Embodiment Construction

[0014] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0015] See attached figure 1 And attached figure 2 , a kind of theodolite external field infinite distance correction method of the present invention:

[0016] Step 1: self-calibrating the self-collimating collimator 3 by using a high-precision plane mirror 2;

[0017] The high-precision plane mirror 2 is placed along the direction of the optical axis of the self-collimating collimator 3, the mirror surface of the high-precision plane mirror 2 is parallel to the optical axis of the self-collimating collimator 3, and the reticle on the self-collimating collimator 3 can be positioned along the Move in the direction of the optical axis of the self-collimating collimator 3, and adjust the position of the reticle until the return image of the high-precision flat mirror 2 on the reticle reaches the clearest, that is, the self-calibration of the self-collimating collimato...

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Abstract

The invention discloses a theodolite external field infinite remote calibration method for solving the technical problem that the external field focusing on the middle-large theodolite has great error in the prior art is solved. The method comprises the following steps: step one, using a high-precision plane mirror to perform self-calibration on an auto-collimated collimator: placing the plane mirror along an optical axis direction of the auto-collimated collimator so that a mirror surface is vertical to the optical axis of the auto-collimated collimator, adjusting a position of a reticle on the auto-collimated collimator until a returned image of the plane mirror on the reticle is the clearest; step two, using the calibrated auto-collimated collimator as an infinite remote standard to perform infinite remote correction on a theodolite focusing system so that the optical axis of the theodolite is parallel to the direction of the optical axis of the auto-collimated collimator, and a light-passing aperture of the theodolite is corresponding to that of the auto-collimated collimator; observing the reticle image through an optical system of the theodolite, and regulating the position of a focusing component on the theodolite until the reticle image is the clearest.

Description

technical field [0001] The invention belongs to the field of photoelectric measurement and control, and in particular relates to a method for correcting the infinite distance in the outer field of a theodolite. Background technique [0002] At present, for the focusing of large and medium-sized theodolites, a combination of distance focusing and temperature focusing is mostly used. There are many factors that affect the accuracy of temperature focusing, including the non-uniform linear expansion coefficient due to the diversity of composite structure materials, the uneven influence of temperature on different layers, and the difficulty in determining the position of the temperature sensor. Furthermore, there is a large error in the temperature focusing zero point obtained through theoretical calculation. Contents of the invention [0003] The object of the present invention is to provide a method for correcting the infinite distance in the field of theodolite, which solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 唐杰蔡盛
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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