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Object distance adjustable finite distance conjugate distance optical zoom system

An optical zoom and conjugate distance technology, which is applied in the field of optical instruments, can solve the problems of damage to the focusing motor, large lift angle, stuck, etc., and achieve the effect of easy processing

Inactive Publication Date: 2017-02-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

Due to this non-monotonicity, when the optical-mechanical structure is designed for the zoom cam curve, the rising angle becomes larger, the processing becomes difficult, and sometimes there will be stuck or even stuck phenomenon, resulting in damage and burning of the focusing motor

Method used

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  • Object distance adjustable finite distance conjugate distance optical zoom system
  • Object distance adjustable finite distance conjugate distance optical zoom system
  • Object distance adjustable finite distance conjugate distance optical zoom system

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Embodiment Construction

[0044]Certain embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this invention will satisfy applicable legal requirements.

[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0046] The embodiment of the present invention provides a finite conjugate distance optical zoom system with an adjustable object distance, such as figure 1 As shown, it includes an objective distance lens group 2, a variable power lens group 3, a compensation lens group 4 and a rea...

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Abstract

The invention provides an object distance adjustable finite distance conjugate distance optical zoom system which comprises an object distance adjustment lens set, a magnification lens set, a compensation lens set and a rear fixed lens set, wherein the object distance adjustment lens set, the magnification lens set, the compensation lens set and the rear fixed lens set are arranged in sequence along the optical axis. The object distance adjustment lens set can move in the direction of the optical axis to clearly image object surfaces of different object distances on an image plane at a fixed position. Without moving the object surfaces or the entire zoom system, the object surfaces with great fluctuations can be clearly observed.

Description

technical field [0001] The invention relates to the field of optical instruments, in particular to a finite conjugate distance optical zoom system with an adjustable object distance. Background technique [0002] In the development process of the imaging optical system, there is a need to use the optical system to search for the target first, and to clearly image and identify the detailed features of the target after finding it. In order to meet such demands, an optical system whose focal length can be changed - a zoom optical system - has been developed. Zoom refers to an optical system in which the focal length changes continuously within a certain range while the position of the image plane remains unchanged. The purpose of changing the focal length is to continuously change the magnification of the system, and the size of the image plane scene can be continuously changed, so that the observer can feel from near to far or from far to near. According to the imaging chara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/17
Inventor 赵阳王平刘春来门树东杨怀江隋永新
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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