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A multi-detector optical system linkage focusing mechanism and focusing method thereof

An optical system and detector technology, applied in the optical field, can solve the problems of increasing the number of operators and system complexity, etc., and achieve the effect of reducing the number of operators, reducing focusing devices, and simple focusing

Active Publication Date: 2016-06-08
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

Although the various subsystems in the current optical system can share some structures (such as the cabinet, primary and secondary mirrors), they all use their own working methods on the focusing mechanism, and this working method will increase the number of operators and the complexity of the system

Method used

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  • A multi-detector optical system linkage focusing mechanism and focusing method thereof
  • A multi-detector optical system linkage focusing mechanism and focusing method thereof
  • A multi-detector optical system linkage focusing mechanism and focusing method thereof

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Embodiment Construction

[0025] see figure 1 , 2 as well as image 3 , the present invention provides a multi-detector optical system linkage focusing mechanism, which includes a mid-focus optical subsystem 1, and the focal length of the subsystem is f 1 =1000mm, caliber 2a 1 =250mm, F-number is 4; telephoto optical subsystem 2, the focal length of this subsystem is f 2 =2000mm, caliber 2a 2 =360mm, F-number is 5.6; short-focus optical subsystem 3, the focal length of this subsystem is f 3 =400mm, caliber 2a 3 =200mm, F-number is 2; three visible light detectors 4, the pixel size is 14μm×14μm; object plane distance calculation unit 5, this unit will receive the feedback amount of the moving distance of the telephoto optical subsystem detector, and the amount Converted into the object plane distance Δl+l, and then respectively converted into the movement amount of the detector of the medium and short-focus optical subsystems, and fed back to the control unit 7 through the feedback circuit 6; the ...

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Abstract

The invention provides a multi-detector optical system linkage focusing mechanism, including a medium-focus optical subsystem, a long-focus optical subsystem, a short-focus optical subsystem, a detector, an object plane distance calculation unit, a feedback circuit, and a position control unit , position measuring unit, focusing unit, and detector moving module; there are three detectors, which are respectively connected to the medium-focus optical subsystem, long-focus optical subsystem, and short-focus optical subsystem; the object plane distance calculation unit and the feedback circuit The object plane distance calculation unit is connected with the medium-focus optical subsystem, the long-focus optical subsystem, and the short-focus optical subsystem; a multi-detector optical system linkage focusing mechanism and focusing method of the present invention, the mechanism has a control Simple, high-precision focusing, light and convenient, etc., can greatly reduce the waste of manpower and material resources.

Description

technical field [0001] The invention belongs to the field of optics, and relates to a multi-load focusing mechanism, in particular to a multi-detector optical system linkage focusing mechanism and a focusing method thereof. Background technique [0002] With the breakthrough of zoom optical system technology, more and more shipboard, ground-based, space-based theodolite and various astronomical observation systems, as well as film and television photography The system has adopted the zoom optical system to replace the traditional fixed focus system. When the optical system forms an image, the object image formula It can be seen that the image distance will change with the change of the object distance; especially in the zoom optical system, there is a more obvious problem of image plane movement during the entire optical measurement process, so a focusing mechanism is required to compensate for the distance of image plane movement; in practice The image plane movement cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/28
Inventor 刘波梅超郝伟李刚杨晓旭邓晓国
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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