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High-precision multi-tooth dividing plate magnification changing mechanism in optical system

An optical system and indexing disc technology, applied in optics, optical components, installation, etc., can solve problems such as high manufacturing and operating costs, complex working methods of optical zoom systems, poor repeat positioning accuracy, etc., and achieve optical axis reset high precision effect

Inactive Publication Date: 2012-07-11
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex working mode, poor repeat positioning accuracy and high manufacturing and operating costs of the existing optical zoom system

Method used

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  • High-precision multi-tooth dividing plate magnification changing mechanism in optical system
  • High-precision multi-tooth dividing plate magnification changing mechanism in optical system
  • High-precision multi-tooth dividing plate magnification changing mechanism in optical system

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Embodiment Construction

[0009] Such as figure 1 with figure 2 As shown, a high-precision multi-tooth indexing disk-type zoom mechanism in an optical system includes a base 1, a multi-tooth indexing disk, a zoom lens group I 4, an ejector 5, a steel ball 6, and a zoom Mirror group II7, lifting cam 8, return spring 9, lifting motor 10, guide post 11, dial 12, rotating motor 13, rotating platform 14, lock nut 15 and roller 16; a through hole is provided in the center of the base 1, A cylindrical body is provided at the center of the rotating platform 14 to cooperate with the through hole, the center of the cylindrical body is provided with a blind hole from the lower end upward, the ejector rod 5 is installed in the blind hole, and the steel ball 6 is installed on the top. The upper end of the rod 5, the roller 16 is arranged at the lower end of the top rod 5, the lifting cam 8 is arranged at the lower end of the roller 16, the lifting cam 8 is installed on the lifting motor 10; the bottom surface of th...

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Abstract

The invention relates to a high-precision multi-tooth dividing plate magnification changing mechanism in an optical system, belongs to the technical field of magnification changing mechanisms in optical instruments, and aims to solve the problems of a complicated working mode, low repositioning accuracy and high manufacturing and operating cost of the conventional optical magnification changing system. The magnification changing mechanism comprises a base, a multi-tooth dividing plate, a magnification changing lens group I, an ejector rod, a steel ball, a magnification changing lens group II,a lifting cam, a resetting spring, a lifting motor, a guide pillar, a drive plate, a rotating motor, a rotating platform, a check nut and a roller, wherein the multi-tooth dividing plate consists of a lower multi-tooth dividing plate and an upper multi-tooth dividing plate. The rotating platform and the multi-tooth dividing plate of the magnification changing mechanism rotate together, the magnification changing lens groups move in a plane rotating mode, and the upper multi-tooth dividing plate is precisely meshed with the lower multi-tooth dividing plate after displacement is determined, so that an optical axis is high in resetting precision; and the magnification changing mechanism is convenient to use and low in manufacturing and operating cost.

Description

Technical field [0001] The invention belongs to the technical field of variable magnification mechanisms in optical instruments, and particularly relates to a high-precision multi-tooth indexing disc type variable magnification mechanism in an optical system. Background technique [0002] The zoom mechanism technology in traditional large-scale optical instruments generally uses a linear guide mechanism to replace the zoom lens group in the main optical path to achieve the purpose of optical instrument zooming. The general optical system requires that the angle between the zoom lens group and the main optical axis is not Less than 30", for a variable power lens group with a clear aperture of Φ40, if the reset accuracy is 0.01mm, the included angle error of the optical axis will be 1'. This is a precision that is difficult to achieve with general structures. This structure is characterized by The linear motor drives the carriage to run on the guide rails to complete the replacemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/04G02B7/00
Inventor 李红光
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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