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Vision system for substrate alignment apparatus and method for controlling its focus

A technology for aligning equipment and vision systems, applied in camera focusing devices, projector focusing devices, focusing devices, etc., to solve problems such as loss of productivity and long processing time

Inactive Publication Date: 2011-12-28
AP SYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the case where the operator manually controls the focal length of the camera of the vision system, it takes a long processing time
Also, productivity suffers due to focus control performed for each substrate

Method used

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  • Vision system for substrate alignment apparatus and method for controlling its focus
  • Vision system for substrate alignment apparatus and method for controlling its focus
  • Vision system for substrate alignment apparatus and method for controlling its focus

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Embodiment Construction

[0027] Hereinafter, specific embodiments will be described in detail with reference to the accompanying drawings. However, the present invention can be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In addition, the same or similar reference numerals represent the same or similar constituent elements, although they appear in different embodiments or drawings of the present invention.

[0028] figure 1 Illustrates a conceptual diagram of a substrate alignment apparatus according to an embodiment of the present invention. figure 2 Illustrates a conceptual diagram of a vision system for a substrate alignment apparatus according to an embodiment of the present invention.

[0029] See figure 1 with figure 2 , The substrate alignment app...

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Abstract

The present invention discloses a method for focusing a vision system for a substrate alignment apparatus which aligns a substrate with images shot by a camera section, comprising: shooting images for focusing control by a camera section; comparing storage images with the shot images for focusing control and setting the storage images corresponding to the shot images for focusing control as a comparison image, wherein the storages image comprise focus images shot at the focusing position of the camera section and movement images, each of the movement images contains information on the distance between the shooting position and the focusing position; calculating information corresponding to the distance corresponding to the movement images; and moving the camera section the calculated distance.

Description

[0001] Cross reference of related applications [0002] This application claims the priority of Korean patent application No. 10-2008-0130455 filed on December 19, 2008 and all the benefits derived therefrom under 35U.SC §119. The content of the Korean patent application is in full. The way of reference is incorporated into this article. Technical field [0003] The present invention relates to a vision system for a pad alignment device and a method for focusing it, and more specifically, to a vision system for a pad alignment device, which can pass In a substrate alignment apparatus using a vision system, the focus control (ie, focusing) of the vision system is automatically performed and the focus of the camera is thus quickly set to reduce the focus control time of the vision system, and a method for controlling the vision system Method of focal length. Background technique [0004] So far, a cathode ray tube (CRT) has been used as a display device. However, CRT has the disadv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/28
CPCG03B3/10G03B13/36H01L21/681Y10S414/136
Inventor 程成德金贤泰文元根
Owner AP SYST INC
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