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Temperature compensation distance focusing servo control method based on hyperbolic interpolation

A technology of servo control and temperature compensation, applied in the direction of installation, optics, instruments, etc., can solve the problem of clear imaging only within a certain distance

Active Publication Date: 2020-08-18
中国北方工业有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is how to provide a temperature compensation distance focus servo control method based on hyperbolic interpolation, so a

Method used

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  • Temperature compensation distance focusing servo control method based on hyperbolic interpolation
  • Temperature compensation distance focusing servo control method based on hyperbolic interpolation
  • Temperature compensation distance focusing servo control method based on hyperbolic interpolation

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Embodiment 1

[0041] The following will describe the detailed implementation process in combination with the optical system and the video source.

Embodiment approach

[0042] The detailed implementation is as follows:

[0043] S1. The adjustable focus system of the infrared objective lens selects a system with a focal length of 70mm;

[0044] S2. Select the entire area of ​​the video image as the observation area; for example, select the entire area of ​​the video image containing the target drone to be observed as the observation area;

[0045] S3. The infrared objective lens can be focused by the focusing system. Through the focusing, the whole area of ​​the image can be imaged clearly, and the position sampling value P1 and the temperature value sampling value T1 can be recorded to obtain the distance value L1 from the observation point to the target observation area;

[0046] S4. When the position of the target UAV changes and the observation area changes, the infrared objective lens can adjust the focus of the system to make the whole area of ​​the image clear, and record the position sampling value P2, the temperature value sampling va...

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Abstract

The invention relates to a temperature compensation distance focusing servo control method based on hyperbolic interpolation, and belongs to the field of optical imaging. The objective of the invention is to overcome the problem that an existing infrared optical system can only achieve clear imaging within a certain distance range due to temperature, depth of field and other reasons. An infrared objective lens focus-adjustable system is selected; acquiring a position sampling value through a position sensor; a temperature sampling value is obtained through a temperature sensor; obtaining a distance sampling value from an observation position to a target area or an object through a distance measurement method; a target position hyperbolic function is determined through multiple sets of dataand stored in a program of the system, so that a clear imaging position value can be obtained according to the temperature and the distance value, the position of an optical lens of the infrared system is automatically controlled through a focusing motor, and focusing imaging at a specific distance is achieved. Therefore, clear imaging can be automatically realized for a specific distance; temperature compensation.

Description

technical field [0001] The invention belongs to the field of optical imaging control, in particular to a temperature compensation distance focus servo control method based on hyperbolic interpolation. Background technique [0002] In the traditional infrared optical system, the characteristics of the optical lens will change with the change of temperature, so the clear surface is different at different temperatures when the position of the optical lens of the same optical system remains unchanged, and at the same time due to the limitation of the depth of field of the optical system , only scenes within a certain distance can be clearly imaged. Contents of the invention [0003] (1) Technical problems to be solved [0004] The technical problem to be solved by the present invention is how to provide a temperature compensation distance focus servo control method based on hyperbolic interpolation, so as to overcome the problem that the existing infrared optical system can o...

Claims

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Application Information

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IPC IPC(8): G02B7/02G02B7/38
CPCG02B7/028G02B7/38
Inventor 陈曙唐晓萍张柳超郭骞周永康胡健钏曾邦泽赵德利李广李泽民
Owner 中国北方工业有限公司
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