An automatic focusing device and its real-time automatic focusing method

An automatic focus and imaging sensor technology, applied in the field of optical imaging, can solve the problems of lack of application technology and achieve the effect of high definition and automatic focus

Active Publication Date: 2019-08-16
苏州睿仟科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, there is still a lack of relevant application technologies

Method used

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  • An automatic focusing device and its real-time automatic focusing method
  • An automatic focusing device and its real-time automatic focusing method
  • An automatic focusing device and its real-time automatic focusing method

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Embodiment Construction

[0031] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0032] like image 3 The structure of the present invention shown is an automatic focusing device, including a platform 1 (stage), a lens 2 (lens), a piezoelectric ceramic device 3 (lens piezo) and an image acquisition device 7 . The invention is based on digital image processing technology, can collect image data into PC at high speed, and uses image contrast algorithm to judge image clarity. Use piezoelectric ceramics to adjust the lens focus. The data processing method used is Gaussian fitting, that is, when the maximum value is found, the focus has been completed.

[0033] In order to solve the problems existing in the prior ...

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Abstract

The invention discloses an automatic focusing device, comprising a platform (1), a lens (2), a piezoelectric ceramic device (3) and an image acquisition device (7), and the image acquisition device (3) is provided with three imaging sensors , the automatic focusing device is provided with two beam splitters and a mirror (6), and the optical path formed on the lens (2) is divided into three beam paths by two beam splitters and a mirror (6), respectively reaching The three imaging sensors described. The invention also discloses the technical solution of the related method of the device. By adopting the above technical solution, using computer data processing, piezoelectric ceramic adjustment device and multiple imaging sensors, the rapid, real-time and automatic focusing of the image of the detected object with large unevenness is realized, and the image with high definition is obtained.

Description

technical field [0001] The invention belongs to the technical field of optical images and relates to digital image processing technology. More specifically, the present invention relates to an autofocus device. In addition, the present invention also relates to a method related to the device. Background technique [0002] The depth of field of an optical inspection system generally decreases as the resolution increases. [0003] like figure 1 As shown, when the object to be detected, such as flat panel display, semiconductor wafer or biomedical slice itself, is curved more than this depth of field, it is necessary to design an automatic focusing system to make each image keep it clear. [0004] However, in the prior art, there is still a lack of relevant application technologies. Contents of the invention [0005] The invention provides an automatic focusing device, the purpose of which is to realize focusing quickly, in real time and automatically during detection sc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N5/225
CPCH04N23/54H04N23/55H04N23/67
Inventor 伍祥辰
Owner 苏州睿仟科技有限公司
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