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Dead axle tool capable of improving optical centering accuracy and optical centering interpretation method

A centering and axis-fixing technology, applied in the direction of manufacturing tools, auxiliary devices, tool holder accessories, etc., can solve the problems of poor concentricity of lens components and affecting the imaging quality of the lens, and achieve the effect of improving precision and reducing focus error

Inactive Publication Date: 2014-01-22
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the included angle α is large, the concentricity of the lens assembly after processing will be poor, which will affect the imaging quality of the entire lens

Method used

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  • Dead axle tool capable of improving optical centering accuracy and optical centering interpretation method
  • Dead axle tool capable of improving optical centering accuracy and optical centering interpretation method
  • Dead axle tool capable of improving optical centering accuracy and optical centering interpretation method

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Embodiment Construction

[0031] The optical centering interpretation method proposed by the present invention not only requires that the self-collimating images of the two spherical surfaces at the front and rear of the lens have a shake amount less than the required value, but also requires that the centers of the two spherical surfaces at the front and rear of the lens be located on the same side of the lathe, such as image 3 As shown, at this time, the center of the circle drawn by the shaking of the front and back spherical self-collimation images is located in the same quadrant of the centering instrument's field of view, as shown Figure 4 shown. The optical axis of the lens group after centering processing is O 1 o 2 , which forms an angle β with the lathe spindle. It can be seen that the β angle is smaller than the α angle, that is, the accuracy of the centering method proposed by the present invention is better than that of the traditional centering method.

[0032] Since the traditional ...

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Abstract

The invention relates to a dead axle tool capable of improving optical centering accuracy and an optical centering interpretation method. The centering tool comprises a lens cone, a first cross reticle target assembly and a second cross reticle target assembly, wherein the first cross reticle target assembly and the second cross reticle target assembly are sequentially assembled in the lens cone; the first cross reticle target assembly, the second cross reticle target assembly and the lens cone are coaxial. The dead axle tool capable of improving the optical centering accuracy and the optical centering interpretation method achieve high concentricity.

Description

technical field [0001] The invention belongs to the field of optical assembly, and relates to an axis-fixing tool capable of improving the precision of optical centering and an optical centering interpretation method. Background technique [0002] With the continuous development of aerospace and aviation, the image quality requirements of optical lenses are getting higher and higher, and the requirements for the concentricity of the optical system are becoming increasingly strict. The concentricity requirement is more difficult for optical assembly to achieve. Optical centering processing is currently a commonly used method to ensure concentricity. The coaxial accuracy of the lens group after optical centering processing is determined by the rotation accuracy of the lathe spindle and the optical centering accuracy of the lens. At present, the rotation accuracy of the lathe spindle can be increased to 0.2 μm, and the error introduced by the spindle rotation accuracy is negli...

Claims

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Application Information

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IPC IPC(8): B23B25/06
CPCB23B25/06
Inventor 张学敏侯晓华宋兴魏儒义段嘉友李华
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI