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Multi-scale surface morphology characteristic detection system and method for mirror-like surface

A surface topography and feature detection technology, applied in measurement devices, instruments, optical devices, etc., can solve problems such as the surge in equipment costs, and achieve the effects of simple structure, convenient operation and high detection efficiency

Inactive Publication Date: 2019-06-07
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

[0004] The participation of many measuring instruments on the market has led to a surge in equipment costs, and it is difficult to integrate all equipment on the production line for rapid online detection

Method used

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  • Multi-scale surface morphology characteristic detection system and method for mirror-like surface
  • Multi-scale surface morphology characteristic detection system and method for mirror-like surface
  • Multi-scale surface morphology characteristic detection system and method for mirror-like surface

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Embodiment 1

[0047] see figure 1 A schematic structural diagram of a mirror-like multi-scale surface topography feature detection system is provided for Embodiment 1 of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows.

[0048] The mirror-like multi-scale surface topography feature detection system provided by the present invention includes: a display light source 1, a camera 2 connected to the display light source 1 through a bracket 4, and a computing unit connected to the display light source 1 and the camera 2 ( Not shown in the figure), the camera 2 is equipped with a lens 3, and the lens 3 can switch between different focal lengths.

[0049] The working method of the mirror-like multi-scale surface topography feature detection system provided by the present invention is as follows:

[0050] The display light source 1 displays characteristic spots, the mirror-like sur...

Embodiment 2

[0072] see image 3 The second embodiment of the present invention provides a flow chart of the steps of the mirror-like multi-scale surface topography feature detection method. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows.

[0073] The mirror-like multi-scale surface topography feature detection method provided by the present invention comprises the following steps:

[0074] Step S110: the display light source displays characteristic spots, and the lens captures a speckle image formed by reflecting the characteristic spots on the mirror-like surface;

[0075] It can be understood that before the detection, the camera 2 needs to be calibrated to confirm the principal point, principal distance and distortion parameters, and select the appropriate lens focal length according to the detection needs. For example, the long focal length is generally suitable for detecting low-order sur...

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Abstract

The invention provides a multi-scale surface morphology characteristic detection system and method for a mirror-like surface. According to the invention, a fringe image with ideal periodic variation is displayed through a display light source based on the principle of fringe reflection, then the fringe image reflected by the mirror-like surface is collected through a camera, and the surface morphology of the mirror-like surface is judged and reconstructed according to the bending degree of the fringe image through a calculation unit, thereby being capable of quickly achieving multi-scale characteristic detection for the surface of the mirror-like surface. The multi-scale surface morphology characteristic detection system and method provided by the invention for the mirror-like surface havethe advantages of simple structure, convenient operation, ability of achieving on-line detection and high detection efficiency.

Description

technical field [0001] The invention relates to the technical field of mirror-like surface topography detection, in particular to a mirror-like multi-scale surface topography feature detection system and a detection method thereof. Background technique [0002] Mirror-like surfaces refer to surfaces with certain high reflectivity characteristics. Various types of mirrors are widely used in daily life, such as various optical transmission / reflection elements, protective glass for front shields of automobiles / trains / airplanes, display panels for TVs / computers / mobile phones , Polished metal surface / ceramic surface and so on. In practical applications, people are concerned about whether the low-order surface shape of these mirror-like components fits with the assembly parts, whether it affects the visual or electronic equipment imaging effect, whether there are intermediate frequency ripples, scratches, stains, orange peels, etc., and the surface roughness Whether it affects fi...

Claims

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Application Information

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IPC IPC(8): G01B11/30
Inventor 陶小平张学军胡海翔薛栋林
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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