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Method for calibrating distance between lens fiber node and rotation axis of uniaxial tracking frame

A single-axis tracking and rotating axis technology, applied in the direction of optical devices, measuring devices, instruments, etc., can solve problems such as large errors and measurement system errors, and achieve the effects of improving measurement accuracy, high calibration accuracy, and great use value

Inactive Publication Date: 2010-12-29
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

However, in practical applications, due to errors such as mechanical processing, optical processing, mechanical adjustment, and optical adjustment, it is difficult for the optical lens node to be on the rotation axis of the tracking frame, and in many cases the error between them is relatively large, which is difficult for the measurement. The system brings large errors

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  • Method for calibrating distance between lens fiber node and rotation axis of uniaxial tracking frame
  • Method for calibrating distance between lens fiber node and rotation axis of uniaxial tracking frame
  • Method for calibrating distance between lens fiber node and rotation axis of uniaxial tracking frame

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 Shown, the photoelectric measurement system that the present invention adopts is mainly made up of laser target frame 1, optical lens 2, linear array CCD 3, turntable 4, photoelectric encoder 5; established measurement system.

[0019] The method of the present invention to calibrate the distance between the optical node of the lens and the rotation axis of the single-axis tracking frame is as follows:

[0020] 1) The linear array CCD 3 is installed on the image plane of the optical lens 2, because the table top of the turntable 4 and the optical lens 2 are all circular, the optical axis of the optical lens 2 and the optical axis of the turntable 4 can be arranged according to symmetry. The axes of rotation intersect at one point; according to the theory of optical imaging, a mathematical model for calculating the distance between th...

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Abstract

The invention discloses a method for calibrating distance between a lens fiber node and a rotation axis of an uniaxial tracking frame, belonging to the field of photoelectric measurement. The method comprises the following steps: 1) according to the optical imaging theory, building a mathematical model for calculating the distance between a lens fiber node and the rotation axis of the tracking frame in the photoelectric measurement system of the uniaxial tracking frame; 2) accurately measuring a required known quantity in the mathematical mode by an intersection measuring system and a measuring device; and 3) processing data by special mathematical processing software and the mathematical model so as to obtain the distance between a lens fiber node and the rotation axis of the tracking frame in the photoelectric measuring system of the uniaxial tracking frame. The method of the invention has high calibration precision, can greatly improve the measurement precision of the instrument and has higher use value.

Description

technical field [0001] The invention belongs to the technical field of photoelectric measurement, and relates to a method for calibrating the distance between an optical node of a lens and a rotation axis of a single-axis tracking frame. Background technique [0002] Photoelectric measurement method is the most widely used precision measurement method at this stage, and is widely used in national defense construction such as aerospace, navigation, satellite surveying and mapping, industrial manufacturing and daily life. There are many types of photoelectric measurement systems. Many tracking and aiming photoelectric measurement systems fix the optical lens on the tracking frame. During the measurement process, the tracking frame drives the optical lens to rotate to scan and measure the target. There are several kinds of tracking frames, such as uniaxial, biaxial, and triaxial. Compared with multi-axis tracking frames, single-axis tracking frames have the advantages of simple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/02
Inventor 李建荣刘畅赵雁沈铖武王志乾刘绍锦耿天文
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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