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An automatic focusing device and an automatic focusing method for increasing the depth of field by adding reflective elements

A reflective element and auto-focusing technology, applied in the field of optical images, can solve problems such as the inability to effectively improve the depth of field and the inability to scan object images at high speed, and achieve the effect of enhancing the depth of field, saving scanning time, and improving the depth of field.

Active Publication Date: 2021-04-13
苏州睿仟科技有限公司
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Problems solved by technology

In order to obtain high-resolution images, it is necessary to use a lens with a large numerical aperture. If the traditional method is used to place the image acquisition device, that is, the acquisition device is perpendicular to the optical axis, the depth of field of the optical device is δ, which cannot effectively improve the depth of field. Scan objects at high speed and get clear images

Method used

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  • An automatic focusing device and an automatic focusing method for increasing the depth of field by adding reflective elements
  • An automatic focusing device and an automatic focusing method for increasing the depth of field by adding reflective elements
  • An automatic focusing device and an automatic focusing method for increasing the depth of field by adding reflective elements

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Embodiment Construction

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 As shown, an automatic focusing device for improving the depth of field includes a platform 1, a lens 2, a reflective element 3, an image acquisition device 4, a computer processing system 5, and a platform position controller 6; the platform 1 can move along X, Y, The three coordinate axes of Z move; an image acquisition sensor 7 is set in the image acquisition device 4; the normal of the reflective element 3 forms a certain inclination angle θ with the optical axis of the lens, and the angle range of the inclination angle θ is 39.5° <θ<50.5°; the image acquisition device 4 is connected to the computer processing system 5 through a signal line, and the image information collected by the image acquisition device 4 is trans...

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Abstract

The invention discloses an automatic focusing device and an automatic focusing method for increasing the depth of field by adding reflective elements, comprising a platform (1), a lens (2), reflective elements (3), image acquisition equipment (4), and a computer processing system (5) , and a platform position controller (6); the platform (1) can move along three coordinate axes of X, Y and Z; an image acquisition sensor (7) is set in the image acquisition device (4); the reflection The normal of the element (3) and the optical axis of the lens form an inclination angle (θ) in the range of 39.5°

Description

technical field [0001] The invention belongs to the technical field of optical images, relates to digital image scanning and processing technology, and more particularly relates to an automatic focusing device and an automatic focusing method for increasing the depth of field by adding reflective elements during image scanning. Background technique [0002] Automatic focus, that is, no human operation is required, the optical imaging system is automatically processed, and through the effective combination of the machine and the program, it can automatically adjust each parameter, such as object distance, image distance, and can clearly calculate the clarity of the imaged picture and The specific location of the imaging ensures the best quality and highest resolution of the final imaged photo. In other words, focus on the object to be inspected, so that the object to be inspected is photographed on the plane of the photosensitive chip to form a clear image, and the main image...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
CPCH04N23/67
Inventor 伍祥辰张春艳肖长力
Owner 苏州睿仟科技有限公司
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