WO2018043809A1 - Device for inspecting attachment position of window glass for display - Google Patents

Device for inspecting attachment position of window glass for display Download PDF

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Publication number
WO2018043809A1
WO2018043809A1 PCT/KR2016/012387 KR2016012387W WO2018043809A1 WO 2018043809 A1 WO2018043809 A1 WO 2018043809A1 KR 2016012387 W KR2016012387 W KR 2016012387W WO 2018043809 A1 WO2018043809 A1 WO 2018043809A1
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WO
WIPO (PCT)
Prior art keywords
edge
window glass
image
unit
camera
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PCT/KR2016/012387
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French (fr)
Korean (ko)
Inventor
박금성
임형식
임정민
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주식회사 영우디에스피
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Publication of WO2018043809A1 publication Critical patent/WO2018043809A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1717—Systems in which incident light is modified in accordance with the properties of the material investigated with a modulation of one or more physical properties of the sample during the optical investigation, e.g. electro-reflectance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N2021/1765—Method using an image detector and processing of image signal
    • G01N2021/177—Detector of the video camera type

Definitions

  • the present invention relates to an apparatus for inspecting the attachment position of a window glass which enables the camera to automatically check whether the window glass is correctly attached on a panel.
  • a display device including a portable terminal undergoes a window glass attachment process for attaching the window glass to the front panel of the device during manufacture and a window glass attachment position inspection process for checking whether the window glass is attached to the correct position.
  • the conventional window glass attachment position inspection is performed by a method in which a worker visually checks a mobile device moving on a conveyor using a magnifying glass.
  • the operator has the edge line L1 of the window frame film P attached to the bottom of the window glass 2 projected through the magnifying glass, and the front panel 1.
  • the window glass 2 is biased to one side in such a way as to determine whether the border line L2 of the black matrix B, which has been applied in black and prevents it from being seen from the front, deviates from the reference line indicated on the magnifying glass. It is to be checked whether it is attached or not attached obliquely.
  • an object of the present invention is to provide an attachment position inspection apparatus of the window glass that the precise inspection is made without the naked eye check.
  • the attachment position inspection apparatus of the window glass of the present invention is the illumination irradiating light to the border forming the boundary of the adhesive region of the window glass and the front panel, and the edge forming the boundary of the adhesive region of the window glass and the front panel And a reading unit for calculating a distance between the edge line of the window film attached to the bottom of the window glass and the edge line of the black matrix forming the edge of the front panel from the captured image.
  • the lighting may be disposed on at least one or more of the corner portions where the long side edge and the short side edge of the window glass meet, and may be spaced apart from the upper portion of the window glass.
  • the camera is disposed at the center of the illumination, and the illumination is disposed so as to face each other with the camera therebetween to irradiate light to the long side edge of the window glass to irradiate light with the first and second irradiation units.
  • a third irradiation unit and a fourth irradiation unit disposed to face each other with the camera interposed therebetween at a right angle with respect to the second irradiation unit and irradiating light to a short side edge of the window glass.
  • the first irradiation unit to the fourth irradiation unit irradiates light inclined toward the long side edge and the short side edge, respectively.
  • the reading unit acquires an image captured by the camera and extracts a border image including a border line of a window film and a border line of a black matrix, and an image for sharply correcting an edge image extracted from the image input unit.
  • the correction unit and a distance measuring unit for obtaining a corrected image from the image correction unit to calculate the distance between the two border lines.
  • the correction unit includes a contrast control unit for adjusting the contrast of the edge image, a line detail adjustment unit for correcting the line detail of the edge image, and a corrected image in which both contrast and line detail are adjusted. It is preferable to be comprised by the crop part which removes unnecessary site
  • the distance measuring unit may calculate the distance between the two edge lines by counting the number of pixels from the corrected image.
  • the reading unit may determine a failure only when the distance between the two edge lines calculated by the distance measuring unit is narrow or wide beyond the allowable range.
  • the illumination may be installed in each of a pair of corner portions facing diagonally of the window glass.
  • the frame and the edge line of the window film attached to the bottom of the window glass from the photographed image and the window glass from the photographed image and the illumination and the camera is installed on the border forming the boundary of the adhesive portion of the window glass and the front panel and It consists of a readout unit that calculates the distance between the edge lines of the black matrix that forms the front panel's edge, allowing the operator to quickly and accurately inspect the attachment position of the window glass without visual confirmation by the operator, as well as greatly improving productivity and workability. It is effective.
  • the present invention by placing the lights on at least one or more of the corners of the long side edge and the short side edge of the window glass meets the installation of the lights and cameras on the long side and short side edges respectively or move the position of the lights and cameras There is an effect that can check the attachment position of the window glass very precisely without the need.
  • the present invention is disposed so that the illumination is facing each other with the camera between the first irradiation unit and the second irradiation unit for irradiating light to the long side edge of the window glass in the direction perpendicular to the first irradiation unit and the second irradiation unit. It is arranged to face each other with the interposed between the third irradiation unit and the fourth irradiation unit for irradiating light to the short side of the window glass has an effect that can be photographed more precisely the long side edge and the short side edge.
  • the present invention is to enable the first irradiation unit to the fourth irradiation unit of the illumination by irradiating light obliquely toward the long side edge and the short side edge, respectively, not only to obtain a clear edge image without shadow, but also irradiated to the edge Since the light is not reflected by the camera to obtain a clearer image, the inspection accuracy is further improved.
  • the present invention smoothly inspects the small size of the window glass by minimizing the occupied space for the window glass by installing the lights inclined in parallel with each other at the corners of the window glass diagonally facing each other. It can work.
  • the present invention has the effect of improving the accuracy of the inspection because it is determined as a result of calculating the distance of the edge in the number of pixels after calculating the contrast and the line detail of the image photographed by the reader.
  • FIG. 1 is a front view showing a window glass is attached to the front panel of a typical mobile device.
  • FIG. 2 is a cross-sectional view taken along the line II-II of FIG.
  • Figure 3 is a state of use of the attachment position inspection apparatus of the window glass according to the present invention.
  • Figure 4 is a cross-sectional view of the use state of the window glass mounting position inspection apparatus according to the present invention.
  • FIG. 5 is a view showing an operation procedure of the attachment position inspection apparatus of the window glass according to the present invention.
  • FIG. 6 is a view showing a process of reading a photographed photograph by a reading unit constituting the attachment position inspection apparatus of the window glass according to the present invention.
  • the attachment position inspection apparatus of the window glass according to the present invention the illumination 100 for irradiating light to the border forming the boundary of the adhesive region between the window glass 2 and the front panel (1)
  • a camera 200 photographing an edge forming a boundary between the window glass 2 and the front panel 1, and a boundary between the window glass 2 and the front panel 1 formed from the captured image. It consists of a reading part (not shown) which calculates the distance of an edge.
  • the window glass 2 is transported to an inspection position along a transfer device (not shown) while being attached to the front panel 1.
  • the illumination 100 and the camera 200 are installed to be spaced apart from the upper portion of the window glass 2 by a predetermined distance.
  • the illumination 100 is the corresponding window.
  • the light is irradiated to the edge forming the boundary between the glass 2 and the front panel 1 and the camera 200 photographs the edge.
  • the illumination 100 and the camera 200 are disposed at an edge portion of the edge of the window glass 2 where the long side edge 2a and the short side edge 2b meet.
  • the illumination 100 and the camera 200 are installed at the long side edge 2a and the short side edge 2b, respectively, or the light 100 and the camera ( The short side edge 2b and the long side edge 2a can be inspected together without moving the position of 200.
  • the illumination 100 and the camera 200 are preferably disposed in at least one of the corners in order to increase the inspection efficiency.
  • the illumination 100 is configured to have a rectangular shape corresponding to the edge shape of the window glass 2 and the camera 200 is configured to be disposed in the center of the illumination (100).
  • the illumination 100 includes a first irradiator 110 and a second irradiator 120 disposed to face each other with the camera 200 interposed therebetween.
  • the first irradiating unit 110 and the second irradiating unit 120 irradiate light to both sides of the long side edge 2a of the window glass 2.
  • the illumination 100 is a third irradiation unit 130 and the fourth irradiation unit (130) disposed to face each other with the camera 200 in the right direction with respect to the first irradiation unit 110 and the second irradiation unit 120 ( 140).
  • the third irradiator 130 and the fourth irradiator 140 irradiate light to both sides of the short side edge 2b of the window glass 2.
  • the first irradiating unit 110 to the fourth irradiating unit 140 irradiate the light obliquely toward the long side edge 2a and the short side edge 2b, respectively.
  • the reason for irradiating light obliquely is that when the light is applied vertically toward the edge of the window glass 2 using a coaxial light source, the light is reflected in a direction other than the camera direction by the rounded corner of the window glass. This is because the image is darkly photographed and the edge cannot be discriminated.
  • the irradiation angle of light is 50 ° to 70 ° with respect to the horizontal plane with respect to the corner of the window glass 2.
  • the irradiation angle of the light is less than 50 °, the sharp shooting is difficult due to the excessive light reflected from the edge of the window glass 2, the camera 200 located in the center by the rounded corners of the window glass.
  • the irradiation angle of light exceeds 70 °, the light is reflected in a direction other than the camera direction by the rounded corners of the window glass 2 so that the image is dark.
  • the reading unit acquires an image captured by the camera 200 and forms a black matrix B that forms an edge between the edge line L1 of the window film P attached to the bottom of the window glass 2 and the front panel 1. The distance between the edge lines L2 of is read.
  • the reading unit acquires an image captured by the camera 200 and extracts an edge image including an edge line L1 of the window film P and an edge line L2 of the black matrix B;
  • the image correction unit sharply corrects the edge image extracted from the image input unit, and a distance measuring unit that obtains the corrected image from the image correction unit and calculates the distance between two edge lines L1 and L2.
  • the compensator includes a contrast controller, a line detail controller, and a crop unit.
  • the contrast adjusting unit adjusts the contrast of the edge image extracted from the image input unit to correct the image so that the contrast is clearly revealed.
  • the line detail adjusting unit corrects the image so that the two edge lines L1 and L2 are clearly revealed by correcting the line detail of the contrast-adjusted edge image.
  • the cropping portion cuts out unnecessary portions, leaving only two edge lines (L1, L2) to be examined in the corrected image in which contrast and line detail adjustment are completed, and between the two edge lines (L1, L2) of the edge. Clean out any unwanted afterimages (see Figure 6).
  • the distance measuring unit calculates the distance between the two edge lines L1 and L2 by counting the number of pixels from the corrected corrected image.
  • the operation of the transfer device is stopped, and the first irradiation unit 110 and Only the second irradiation unit 120 is turned on at the same time.
  • the light irradiated to the long side edge 2a at a predetermined angle from the first irradiation unit 110 and the second irradiation unit 120 illuminates both sides of the long side edge 2a so that no shadow is generated.
  • the camera 200 since it is not reflected toward the camera 200 located between the first irradiator 110 and the second irradiator 120, the camera 200 can photograph the edge very clearly.
  • the first irradiator 110 and the second irradiator 120 are turned off and the third irradiator 130 and the fourth irradiator 140 are turned on.
  • the light irradiated to the long side edge 2a at a predetermined angle from the first irradiation unit 110 and the second irradiation unit 120 illuminates both sides of the short side edge 2b so that no shadow is generated.
  • the camera 200 since it is not reflected toward the camera 200 located between the third irradiator 130 and the fourth irradiator 140, the camera 200 can photograph the edge very clearly.
  • the image input unit of the reading unit is connected to the long side edge 2a from the camera 200.
  • the image (FIG. 6A) of the short side edge 2b is received, and the edge portion (FIG. 6B) forming the boundary between the window glass 2 and the front panel 1 is extracted.
  • the image compensator of the readout unit adjusts the contrast so that the edge line L1 of the window film and the edge line L2 of the black matrix forming the edge of the front panel 1 are well exposed from the extracted edge image (FIG. 6C) and the line.
  • the cropping part leaves only the inspection area and the edge and removes all the unnecessary parts (Fig. 6E).
  • the edge line L1 of the window film and the edge line L2 of the black matrix, which form the boundary between the window glass 2 and the front panel 1, are clearly visible.
  • the distance measuring unit calculates the distance D of the edge portion by counting the number of pixels between the two edge lines L1 and L2 from the corrected image.
  • the reading unit judges that the window glass 2 is attached to one side or obliquely and reads badly.
  • the window glass 2 which is a new inspection target, is transferred to the inspection position, and the inspection is performed while the illumination 100 and the camera 200 operate. Begins.
  • the present invention continuously performs the attachment inspection of the window glass 2 while repeating this series of processes.

Abstract

The present invention relates to a device for inspecting the attachment position of window glass, capable of automatically inspecting through a camera whether window glass is correctly attached on a panel. The device for inspecting the attached position of window glass, according to the present invention, comprises: a lighting (100) for emitting light at an edge forming an adhering part border of window glass (2) and a front panel (1); a camera (200) for photographing the edge forming the adhering part border of the window glass and the front panel; and a reading unit for calculating, from the captured image, the distance between an edge line of a window film attached to the lower surface of the window glass and an edge line of a black matrix forming the edge of the front panel.

Description

디스플레이용 윈도우 글래스의 부착 위치 검사장치Attachment position inspection device for window glass for display
본 발명은 윈도우 글래스가 패널 상에 올바르게 부착되었는지를 카메라를 통해 자동으로 검사할 수 있도록 된 윈도우 글래스의 부착 위치 검사장치에 관한 것이다.The present invention relates to an apparatus for inspecting the attachment position of a window glass which enables the camera to automatically check whether the window glass is correctly attached on a panel.
일반적으로 휴대용 단말기를 비롯한 디스플레이 기기는 제조시 기기의 전면 패널에 윈도우 글래스를 부착시키는 윈도우 글래스 부착공정과 윈도우 글래스가 올바른 위치에 부착되었는지를 검사하는 윈도우 글래스 부착 위치 검사공정을 필수적으로 거치게 된다.In general, a display device including a portable terminal undergoes a window glass attachment process for attaching the window glass to the front panel of the device during manufacture and a window glass attachment position inspection process for checking whether the window glass is attached to the correct position.
이중, 종래의 윈도우 글래스 부착 위치 검사는 컨베어를 타고 이동하는 모바일 기기를 작업자가 확대경을 이용하여 육안으로 확인하는 방법으로 이루어진다.Among these, the conventional window glass attachment position inspection is performed by a method in which a worker visually checks a mobile device moving on a conveyor using a magnifying glass.
즉, 도 1 및 도 2에 도시된 바와 같이, 작업자는 확대경을 통해 비추어지는 윈도우 글래스(2)의 저면에 부착된 윈도우 테두리 필름(P)의 테두리 라인(L1)과, 전면 패널(1)의 가장자리를 이루며 전면에서 보이는 것을 방지하도록 검정색으로 도포된 블랙매트릭스(B; Black Matrix)의 테두리 라인(L2)이 확대경에 표시된 기준 라인으로부터 벗어났는지를 판별하는 방식으로 윈도우 글래스(2)가 일측으로 치우쳐 부착되지는 않았는지 혹은 경사지게 부착되지는 않았는지를 검사하는 것이다.That is, as shown in FIG. 1 and FIG. 2, the operator has the edge line L1 of the window frame film P attached to the bottom of the window glass 2 projected through the magnifying glass, and the front panel 1. The window glass 2 is biased to one side in such a way as to determine whether the border line L2 of the black matrix B, which has been applied in black and prevents it from being seen from the front, deviates from the reference line indicated on the magnifying glass. It is to be checked whether it is attached or not attached obliquely.
그러나, 이와 같은 종래의 검사방법은 작업자가 육안으로 검사를 실시해야 하므로 검사신뢰도가 크게 떨어지는 것은 물론 작업성이 매우 불량할 뿐만 아니라 검사시간이 과다하게 소모되어 생산성이 크게 떨어지는 문제점이 발생된다.However, such a conventional inspection method requires a visual inspection by the operator, which greatly reduces the inspection reliability, not only poor workability but also excessively consumes inspection time, thereby greatly reducing productivity.
본 발명은 상기한 문제점들을 해결하기 위해 안출된 것으로서, 작업자가 육안으로 확인하지 않고도 정밀한 검사가 이루어지게 되는 윈도우 글래스의 부착 위치 검사장치를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, an object of the present invention is to provide an attachment position inspection apparatus of the window glass that the precise inspection is made without the naked eye check.
상기 목적을 달성하기 위해, 본 발명의 윈도우 글래스의 부착 위치 검사장치는 윈도우 글래스와 전면 패널의 접착부위 경계를 이루는 테두리에 빛을 조사하는 조명과, 윈도우 글래스와 전면 패널의 접착부위 경계를 이루는 테두리를 촬영하는 카메라와, 촬영된 영상로부터 윈도우 글래스의 저면에 부착된 윈도우 필름의 테두리 라인과 전면 패널의 테두리를 이루는 블랙매트릭스의 테두리 라인 사이의 거리를 산출하는 판독부를 포함하여 구성됨을 특징으로 한다.In order to achieve the above object, the attachment position inspection apparatus of the window glass of the present invention is the illumination irradiating light to the border forming the boundary of the adhesive region of the window glass and the front panel, and the edge forming the boundary of the adhesive region of the window glass and the front panel And a reading unit for calculating a distance between the edge line of the window film attached to the bottom of the window glass and the edge line of the black matrix forming the edge of the front panel from the captured image.
또한, 상기 조명은 윈도우 글래스의 장변측 테두리와 단변측 테두리가 만나는 모서리부들 중 적어도 한군데 이상에 배치되어 윈도우 글래스의 상부로부터 이격되게 설치될 수 있다.In addition, the lighting may be disposed on at least one or more of the corner portions where the long side edge and the short side edge of the window glass meet, and may be spaced apart from the upper portion of the window glass.
이 경우, 상기 카메라가 조명의 중앙에 배치됨과 아울러, 상기 조명이 카메라를 사이에 두고 서로 마주하도록 배치되어 윈도우 글래스의 장변측 테두리에 빛을 조사하는 제1조사부와 제2조사부 및 상기 제1조사부와 제2조사부에 대하여 직각방향으로 상기 카메라를 사이에 두고 서로 마주하게 배치되어 윈도우 글래스의 단변측 테두리에 빛을 조사하는 제3조사부와 제4조사부로 구성될 수 있다.In this case, the camera is disposed at the center of the illumination, and the illumination is disposed so as to face each other with the camera therebetween to irradiate light to the long side edge of the window glass to irradiate light with the first and second irradiation units. And a third irradiation unit and a fourth irradiation unit disposed to face each other with the camera interposed therebetween at a right angle with respect to the second irradiation unit and irradiating light to a short side edge of the window glass.
또한, 상기 제1조사부 내지 제4조사부는 각각 장변측 테두리와 단변측 테두리를 향해 경사지게 빛을 조사하는 것이 바람직하다.In addition, it is preferable that the first irradiation unit to the fourth irradiation unit irradiates light inclined toward the long side edge and the short side edge, respectively.
아울러, 상기 판독부는 카메라로부터 촬영된 영상을 획득하고 윈도우 필름의 테두리 라인과 블랙매트릭스의 테두리 라인을 포함하는 테두리 영상을 추출하는 영상 입력부와, 상기 영상 입력부로부터 추출된 테두리 영상을 선명하게 보정하는 영상 보정부와, 영상 보정부로부터 보정 영상을 획득하여 두 테두리 라인 사이의 거리를 산출하는 거리 측정부로 구성될 수 있다.In addition, the reading unit acquires an image captured by the camera and extracts a border image including a border line of a window film and a border line of a black matrix, and an image for sharply correcting an edge image extracted from the image input unit. The correction unit and a distance measuring unit for obtaining a corrected image from the image correction unit to calculate the distance between the two border lines.
이 경우, 상기 보정부는 테두리 영상의 콘트래스트를 조절하는 콘트래스트 조절부와, 상기 테두리 영상의 라인 디테일을 보정하는 라인 디테일 조절부와, 콘트래스트와 라인 디테일이 모두 조절된 보정된 영상중에서 테두리 이외의 불필요한 부위를 제거하는 크롭부로 구성되는 것이 바람직하다.In this case, the correction unit includes a contrast control unit for adjusting the contrast of the edge image, a line detail adjustment unit for correcting the line detail of the edge image, and a corrected image in which both contrast and line detail are adjusted. It is preferable to be comprised by the crop part which removes unnecessary site | parts other than an edge.
아울러, 상기 거리측정부는 보정영상로부터 픽셀수를 카운트하여 상기 두 테두리 라인 사이의 거리를 산출할 수 있다.In addition, the distance measuring unit may calculate the distance between the two edge lines by counting the number of pixels from the corrected image.
또한, 상기 판독부는 거리측정부에서 산출한 두 테두리 라인 사이의 거리가 허용범위 이상으로 좁거나 넓을 경우에 한하여 불량으로 판정할 수 있다.In addition, the reading unit may determine a failure only when the distance between the two edge lines calculated by the distance measuring unit is narrow or wide beyond the allowable range.
한편, 상기 조명은 윈도우 글래스의 대각선으로 마주하는 한 쌍의 모서리부에 각각 설치될 수 있다.On the other hand, the illumination may be installed in each of a pair of corner portions facing diagonally of the window glass.
상기와 같이 구성된 본 발명은 윈도우 글래스와 전면 패널의 접착부위 경계를 이루는 테두리에 조명과 카메라를 설치하고 촬영된 영상로부터 윈도우 글래스와 촬영된 영상로부터 윈도우 글래스의 저면에 부착된 윈도우 필름의 테두리 라인과 전면 패널의 테두리를 이루는 블랙매트릭스의 테두리 라인 사이의 거리를 산출하는 판독부로 구성되어 작업자가 육안으로 확인하지 않고도 윈도우 글래스의 부착위치를 신속하고 정확하게 검사할 수 있을 뿐만 아니라 생산성과 작업성이 크게 향상되는 효과가 있다.According to the present invention configured as described above, the frame and the edge line of the window film attached to the bottom of the window glass from the photographed image and the window glass from the photographed image and the illumination and the camera is installed on the border forming the boundary of the adhesive portion of the window glass and the front panel and It consists of a readout unit that calculates the distance between the edge lines of the black matrix that forms the front panel's edge, allowing the operator to quickly and accurately inspect the attachment position of the window glass without visual confirmation by the operator, as well as greatly improving productivity and workability. It is effective.
또한, 본 발명은 조명을 윈도우 글래스의 장변측 테두리와 단변측 테두리가 만나는 모서리부들 중 적어도 한군데 이상에 배치함으로써 장변측 테두리와 단변측 테두리에 각각 조명과 카메라를 설치하거나 조명과 카메라의 위치를 이동시키지 않고도 매우 정밀하게 윈도우 글래스의 부착위치를 검사할 수 있는 효과가 있다.In addition, the present invention by placing the lights on at least one or more of the corners of the long side edge and the short side edge of the window glass meets the installation of the lights and cameras on the long side and short side edges respectively or move the position of the lights and cameras There is an effect that can check the attachment position of the window glass very precisely without the need.
또한, 본 발명은 조명을 카메라를 사이에 두고 서로 마주하도록 배치되어 윈도우 글래스의 장변측 테두리에 빛을 조사하는 제1조사부와 제2조사부 및 상기 제1조사부와 제2조사부에 대하여 직각방향으로 카메라를 사이에 두고 서로 마주하게 배치되어 윈도우 글래스의 단변에 빛을 조사하는 제3조사부와 제4조사부로 구성함으로써 장변측 테두리와 단변측 테두리를 보다 정밀하게 촬영할 수 있는 효과가 있다.In addition, the present invention is disposed so that the illumination is facing each other with the camera between the first irradiation unit and the second irradiation unit for irradiating light to the long side edge of the window glass in the direction perpendicular to the first irradiation unit and the second irradiation unit. It is arranged to face each other with the interposed between the third irradiation unit and the fourth irradiation unit for irradiating light to the short side of the window glass has an effect that can be photographed more precisely the long side edge and the short side edge.
아울러, 본 발명은 상기 조명의 제1조사부 내지 제4조사부가 각각 장변측 테두리와 단변측 테두리를 향해 경사지게 빛을 조사하도록 함으로써 그림자 없는 선명한 테두리 영상을 획득할 수 있게 될 뿐만 아니라, 테두리에 조사된 빛이 카메라로 반사되지 않게 되어 보다 선명한 영상을 얻을 수 있게 되므로 검사의 정밀도가 더욱 우수해지는 효과가 있다.In addition, the present invention is to enable the first irradiation unit to the fourth irradiation unit of the illumination by irradiating light obliquely toward the long side edge and the short side edge, respectively, not only to obtain a clear edge image without shadow, but also irradiated to the edge Since the light is not reflected by the camera to obtain a clearer image, the inspection accuracy is further improved.
또한, 본 발명은 조명을 윈도우 글래스의 대각선으로 마주하는 한 쌍의 모서리부에 서로 나란하게 경사진 상태로 설치하여 윈도우 글래스에 대한 점유공간을 최소화시킴으로써 작은 크기의 윈도우 글래스에 대한 검사도 원활하게 수행할 수 있는 효과가 있다.In addition, the present invention smoothly inspects the small size of the window glass by minimizing the occupied space for the window glass by installing the lights inclined in parallel with each other at the corners of the window glass diagonally facing each other. It can work.
아울러, 본 발명은 판독부가 촬영된 영상을 콘트래스트 및 라인 디테일을 보정한 후에 테두리의 거리를 픽셀수로 계산하여 산출한 결과로 양불 판정을 하므로 검사의 정밀도가 보다 우수해지는 효과가 있다.In addition, the present invention has the effect of improving the accuracy of the inspection because it is determined as a result of calculating the distance of the edge in the number of pixels after calculating the contrast and the line detail of the image photographed by the reader.
도 1은 일반적인 모바일 기기의 전면 패널에 윈도우 글래스가 부착된 상태를 나타내는 정면도.1 is a front view showing a window glass is attached to the front panel of a typical mobile device.
도 2는 도 1의 Ⅱ-Ⅱ선에 따른 단면도.2 is a cross-sectional view taken along the line II-II of FIG.
도 3은 본 발명에 따른 윈도우 글래스의 부착 위치 검사장치의 사용상태도.Figure 3 is a state of use of the attachment position inspection apparatus of the window glass according to the present invention.
도 4는 본 발명에 따른 윈도우 글래스의 부착 위치 검사장치의 사용상태단면도.Figure 4 is a cross-sectional view of the use state of the window glass mounting position inspection apparatus according to the present invention.
도 5는 본 발명에 따른 윈도우 글래스의 부착 위치 검사장치의 동작순서를 나타내는 도면.5 is a view showing an operation procedure of the attachment position inspection apparatus of the window glass according to the present invention.
도 6은 본 발명에 따른 윈도우 글래스의 부착 위치 검사장치를 구성하는 판독부가 촬영된 사진을 판독하는 과정을 나타내는 도면.6 is a view showing a process of reading a photographed photograph by a reading unit constituting the attachment position inspection apparatus of the window glass according to the present invention.
본 발명의 특징 및 이점들은 첨부도면에 의거한 다음의 바람직한 실시예에 대한 상세한 설명으로 더욱 명백해질 것이다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 발명자가 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.
이하, 본 발명의 일 실시예를 도면을 참조하여 상세히 설명함에 있어, 동일한 구성에 대해서는 동일한 부호를 사용하며, 명료성을 위하여 가능한 중복되지 않게 상이한 부분만을 주로 설명한다.DETAILED DESCRIPTION Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. Like reference numerals refer to like elements, and only different parts will be mainly described so as not to overlap for clarity.
도 3 및 도 4에 도시된 바와 같이, 본 발명에 따른 윈도우 글래스의 부착 위치 검사장치는 윈도우 글래스(2)와 전면 패널(1)의 접착부위 경계를 이루는 테두리에 빛을 조사하는 조명(100)과, 윈도우 글래스(2)와 전면 패널(1)의 접착부위 경계를 이루는 테두리를 촬영하는 카메라(200)와, 촬영된 영상로부터 윈도우 글래스(2)와 전면 패널(1)의 접착부위 경계를 이루는 테두리의 거리를 산출하는 판독부(미도시)로 구성된다.3 and 4, the attachment position inspection apparatus of the window glass according to the present invention, the illumination 100 for irradiating light to the border forming the boundary of the adhesive region between the window glass 2 and the front panel (1) And a camera 200 photographing an edge forming a boundary between the window glass 2 and the front panel 1, and a boundary between the window glass 2 and the front panel 1 formed from the captured image. It consists of a reading part (not shown) which calculates the distance of an edge.
상기 윈도우 글래스(2)는 전면 패널(1)에 부착된 상태로 이송장치(미도시)를 따라 검사위치로 이송된다.The window glass 2 is transported to an inspection position along a transfer device (not shown) while being attached to the front panel 1.
상기 조명(100)과 카메라(200)는 윈도우 글래스(2)의 상부로부터 일정거리 이격되게 설치되어 이송장치의 제어에 따라 윈도우 글래스(2)가 검사위치에 정지하면 상기 조명(100)이 해당 윈도우 글래스(2)와 전면 패널(1)의 접착부위 경계를 이루는 테두리에 빛을 조사하고 카메라(200)가 테두리를 촬영한다.The illumination 100 and the camera 200 are installed to be spaced apart from the upper portion of the window glass 2 by a predetermined distance. When the window glass 2 stops at the inspection position under the control of the transfer device, the illumination 100 is the corresponding window. The light is irradiated to the edge forming the boundary between the glass 2 and the front panel 1 and the camera 200 photographs the edge.
상기 조명(100)과 카메라(200)는 윈도우 글래스(2)의 테두리 중, 장변측 테두리(2a)와 단변측 테두리(2b)가 만나는 모서리부에 배치된다. 조명(100)과 카메라(200)를 모서리부에 배치하면, 장변측 테두리(2a)와 단변측 테두리(2b)에 각각 조명(100)과 카메라(200)를 설치하거나 조명(100)과 카메라(200)의 위치를 이동시키지 않고도 단변측 테두리(2b)와 장변측 테두리(2a)를 함께 검사할 수 있다.The illumination 100 and the camera 200 are disposed at an edge portion of the edge of the window glass 2 where the long side edge 2a and the short side edge 2b meet. When the illumination 100 and the camera 200 are disposed at the corners, the illumination 100 and the camera 200 are installed at the long side edge 2a and the short side edge 2b, respectively, or the light 100 and the camera ( The short side edge 2b and the long side edge 2a can be inspected together without moving the position of 200.
그리고 상기 조명(100)과 카메라(200)는 검사효율을 높이기 위하여 상기 모서리부들 중 적어도 한군데 이상에 배치되는 것이 바람직하다.In addition, the illumination 100 and the camera 200 are preferably disposed in at least one of the corners in order to increase the inspection efficiency.
본 발명에 따르면, 상기 조명(100)은 윈도우 글래스(2)의 테두리 형태에 대응되게 사각형상으로 구성되도록 하고 상기 카메라(200)는 조명(100)의 중앙에 배치되도록 구성된다.According to the present invention, the illumination 100 is configured to have a rectangular shape corresponding to the edge shape of the window glass 2 and the camera 200 is configured to be disposed in the center of the illumination (100).
상기 조명(100)은 카메라(200)를 사이에 두고 서로 마주하도록 배치되는 제1조사부(110)와 제2조사부(120)를 구비한다. 상기 제1조사부(110)와 제2조사부(120)는 윈도우 글래스(2)의 장변측 테두리(2a)에 대하여 양측으로 빛을 조사한다. 아울러, 상기 조명(100)은 제1조사부(110)와 제2조사부(120)에 대하여 직각방향으로 카메라(200)를 사이에 두고 서로 마주하게 배치되는 제3조사부(130)와 제4조사부(140)를 구비한다. 상기 제3조사부(130)와 제4조사부(140)는 윈도우 글래스(2)의 단변측 테두리(2b)에 대하여 양측으로 빛을 조사한다.The illumination 100 includes a first irradiator 110 and a second irradiator 120 disposed to face each other with the camera 200 interposed therebetween. The first irradiating unit 110 and the second irradiating unit 120 irradiate light to both sides of the long side edge 2a of the window glass 2. In addition, the illumination 100 is a third irradiation unit 130 and the fourth irradiation unit (130) disposed to face each other with the camera 200 in the right direction with respect to the first irradiation unit 110 and the second irradiation unit 120 ( 140). The third irradiator 130 and the fourth irradiator 140 irradiate light to both sides of the short side edge 2b of the window glass 2.
이 경우, 상기 제1조사부(110) 내지 제4조사부(140)는 각각 장변측 테두리(2a)와 단변측 테두리(2b)를 향해 빛을 경사지게 조사한다. 빛을 경사지게 조사하는 이유는 동축광원을 사용하여 윈도우 글래스(2)의 모서리를 향해 빛을 수직으로 조사하는 경우, 윈도우 글래스 글라스의 라운드 진 모서리에 의해 빛이 카메라 방향이 아닌 다른 방향으로 반사되어 영상이 어둡게 촬영되어 테두리를 판별할 수 없기 때문이다.In this case, the first irradiating unit 110 to the fourth irradiating unit 140 irradiate the light obliquely toward the long side edge 2a and the short side edge 2b, respectively. The reason for irradiating light obliquely is that when the light is applied vertically toward the edge of the window glass 2 using a coaxial light source, the light is reflected in a direction other than the camera direction by the rounded corner of the window glass. This is because the image is darkly photographed and the edge cannot be discriminated.
따라서 빛의 조사각도는 윈도우 글래스(2)의 모서리부를 기준으로 수평면에 대하여 50° 내지 70°가 되도록 하는 것이 바람직하다.Therefore, it is preferable that the irradiation angle of light is 50 ° to 70 ° with respect to the horizontal plane with respect to the corner of the window glass 2.
만일 빛의 조사각도가 50°미만이면, 윈도우 글래스 글라스의 라운드 진 모서리에 의하여 중앙에 위치한 카메라(200)가 윈도우 글래스(2)의 모서리로부터 반사되는 과다한 빛 때문에 선명한 촬영이 힘들게 된다.If the irradiation angle of the light is less than 50 °, the sharp shooting is difficult due to the excessive light reflected from the edge of the window glass 2, the camera 200 located in the center by the rounded corners of the window glass.
또한, 빛의 조사각도가 70°를 초과하게 되면 윈도우 글래스(2)의 라운드 진 모서리에 의하여 빛이 카메라 방향이 아닌 다른 방향으로 반사되어 영상이 어둡게 촬영된다.In addition, when the irradiation angle of light exceeds 70 °, the light is reflected in a direction other than the camera direction by the rounded corners of the window glass 2 so that the image is dark.
한편, 상기 조명(100)은 윈도우 글래스(2)의 대각선으로 마주하는 한 쌍의 모서리부에 각각 설치되는 경우, 상대적으로 크기가 작은 윈도우 글래스(2)에 대해서도 대각선으로 마주하는 한 쌍의 모서리부에 조명(100)의 설치가 가능해질 뿐만 아니라, 윈도우 글래스(2) 외측에 배치된 주변의 기구물과의 간섭도 최소화할 수 있다.On the other hand, when the illumination 100 is respectively installed in a pair of diagonally opposite corner portions of the window glass 2, a pair of corner portions facing diagonally even for a relatively small window glass (2) In addition to the installation of the illumination 100, it is also possible to minimize the interference with the peripheral apparatus disposed outside the window glass (2).
상기 판독부는 카메라(200)로부터 촬영된 영상을 획득하고 윈도우 글래스(2)의 저면에 부착된 윈도우 필름(P)의 테두리 라인(L1)과 전면 패널(1)의 테두리를 이루는 블랙매트릭스(B)의 테두리 라인(L2) 사이의 거리를 판독한다.The reading unit acquires an image captured by the camera 200 and forms a black matrix B that forms an edge between the edge line L1 of the window film P attached to the bottom of the window glass 2 and the front panel 1. The distance between the edge lines L2 of is read.
상기 판독부는 카메라(200)로부터 촬영된 영상을 획득하고 윈도우 필름(P)의 테두리 라인(L1)과 블랙매트릭스(B)의 테두리 라인(L2)을 포함하는 테두리 영상을 추출하는 영상 입력부와, 상기 영상 입력부로부터 추출된 테두리 영상을 선명하게 보정하는 영상 보정부와, 영상 보정부로부터 보정 영상을 획득하여 두 테두리 라인(L1,L2) 부위의 거리를 산출하는 거리 측정부로 구성될 수 있다.The reading unit acquires an image captured by the camera 200 and extracts an edge image including an edge line L1 of the window film P and an edge line L2 of the black matrix B; The image correction unit sharply corrects the edge image extracted from the image input unit, and a distance measuring unit that obtains the corrected image from the image correction unit and calculates the distance between two edge lines L1 and L2.
상기 보정부는 콘트래스트(Contrast) 조절부와 조절 디테일(Line Detail) 조절부와 크롭(Crop)부로 구성된다. 도 6에 도시된 바와 같이, 상기 콘트래스트 조절부는 영상 입력부로부터 추출된 테두리 영상의 콘트래스트를 조절하여 명암이 확실하게 드러나도록 영상을 보정한다. 그리고 상기 라인 디테일 조절부는 콘트래스트가 조절된 테두리 영상의 라인 디테일을 보정하여 선예도를 높여줌으로써 두 테두리 라인(L1,L2)이 확실하게 드러나도록 영상을 보정한다. 아울러, 상기 크롭부는 콘트래스트와 라인 디테일의 조절이 완료된 보정 영상에서 검사하고자 하는 두 테두리 라인(L1,L2) 부위만 남기고 불필요한 부위를 잘라내는 동시에 테두리의 두 테두리 라인(L1,L2) 사이에 나타나는 불필요한 잔상들을 깨끗하게 제거한다.(도 6 참조)The compensator includes a contrast controller, a line detail controller, and a crop unit. As illustrated in FIG. 6, the contrast adjusting unit adjusts the contrast of the edge image extracted from the image input unit to correct the image so that the contrast is clearly revealed. The line detail adjusting unit corrects the image so that the two edge lines L1 and L2 are clearly revealed by correcting the line detail of the contrast-adjusted edge image. In addition, the cropping portion cuts out unnecessary portions, leaving only two edge lines (L1, L2) to be examined in the corrected image in which contrast and line detail adjustment are completed, and between the two edge lines (L1, L2) of the edge. Clean out any unwanted afterimages (see Figure 6).
한편, 거리측정부는 보정이 완료된 보정영상으로부터 픽셀수를 카운트하여 상기 두 테두리 라인(L1,L2) 사이의 거리를 산출한다.Meanwhile, the distance measuring unit calculates the distance between the two edge lines L1 and L2 by counting the number of pixels from the corrected corrected image.
그리고 산출된 거리가 허용범위 이상으로 좁거나 넓을 경우에 한하여 불량으로 판정한다.Only when the calculated distance is narrow or wide beyond the allowable range, it is determined as defective.
이와 같이 구성된 본 발명에 따른 윈도우 글래스의 부착 위치 검사장치를 이용하여 윈도우 글래스의 부착 위치를 검사하는 과정을 살펴본다.The process of inspecting the attachment position of the window glass by using the attachment position inspection apparatus of the window glass according to the present invention configured as described above will be described.
이송장치를 통해 윈도우 글래스(2)가 전면 패널(1)에 부착된 상태로 조명(100)과 카메라(200) 설치된 검사위치에 도달하면 이송장치의 동작이 중지되고, 제1조사부(110)와 제2조사부(120)만 동시에 점등된다.When the window glass 2 reaches the inspection position where the light 100 and the camera 200 are installed while the window glass 2 is attached to the front panel 1 through the transfer device, the operation of the transfer device is stopped, and the first irradiation unit 110 and Only the second irradiation unit 120 is turned on at the same time.
도 5에 도시된 바와 같이, 제1조사부(110)와 제2조사부(120)가 점등되면 모서리부의 장변측 테두리(2a)의 좌우측으로 비스듬하게 빛이 조사되고 카메라(200)가 장변측 테두리(2a)를 촬영한다.As shown in FIG. 5, when the first irradiating unit 110 and the second irradiating unit 120 are turned on, light is irradiated obliquely to the left and right sides of the long side edge 2a of the corner portion, and the camera 200 has a long side edge ( Shoot 2a).
이때, 제1조사부(110)와 제2조사부(120)로부터 일정각도 경사지게 장변측 테두리(2a)에 조사된 빛은 장변측 테두리(2a)부의 양측을 조명(100)하므로 그림자가 전혀 발생되지 않는 동시에 제1조사부(110)와 제2조사부(120)의 사이에 위치하는 카메라(200)측으로 반사되지 않으므로 카메라(200)는 테두리를 매우 선명하게 촬영할 수 있게 된다.At this time, the light irradiated to the long side edge 2a at a predetermined angle from the first irradiation unit 110 and the second irradiation unit 120 illuminates both sides of the long side edge 2a so that no shadow is generated. At the same time, since it is not reflected toward the camera 200 located between the first irradiator 110 and the second irradiator 120, the camera 200 can photograph the edge very clearly.
장변측 테두리(2a)의 촬영이 완료되면, 제1조사부(110)와 제2조사부(120)가 소등됨과 동시에 제3조사부(130)와 제4조사부(140)가 점등된다.When the photographing of the long side edge 2a is completed, the first irradiator 110 and the second irradiator 120 are turned off and the third irradiator 130 and the fourth irradiator 140 are turned on.
제3조사부(130)와 제4조사부(140)가 점등되면 모서리부의 단변측 테두리(2b)의 좌우측으로 비스듬하게 빛이 조사되고 카메라(200)가 단변측 테두리(2b)를 촬영한다.When the third irradiator 130 and the fourth irradiator 140 are turned on, light is irradiated obliquely to the left and right sides of the short side edge 2b of the corner portion, and the camera 200 photographs the short side edge 2b.
이때, 제1조사부(110)와 제2조사부(120)로부터 일정각도 경사지게 장변측 테두리(2a)에 조사된 빛은 단변측 테두리(2b)의 양측을 조명(100)하므로 그림자가 전혀 발생되지 않는 동시에 제3조사부(130)와 제4조사부(140)의 사이에 위치하는 카메라(200)측으로 반사되지 않으므로 카메라(200)는 테두리를 매우 선명하게 촬영할 수 있게 된다.At this time, the light irradiated to the long side edge 2a at a predetermined angle from the first irradiation unit 110 and the second irradiation unit 120 illuminates both sides of the short side edge 2b so that no shadow is generated. At the same time, since it is not reflected toward the camera 200 located between the third irradiator 130 and the fourth irradiator 140, the camera 200 can photograph the edge very clearly.
이와 같은 방법으로 모서리부의 장변측 테두리(2a)와 단변측 테두리(2b)의 촬영이 완료되면, 도 5에 도시된 바와 같이, 판독부의 영상입력부가 카메라(200)로부터 장변측 테두리(2a)와 단변측 테두리(2b)의 영상(도 6a)을 전달받고 윈도우 글래스(2)와 전면 패널(1)의 접착부위 경계를 이루는 테두리 부위(도 6b)를 추출한다.When the photographing of the long side edge 2a and the short side edge 2b of the corner portion is completed in this manner, as shown in FIG. 5, the image input unit of the reading unit is connected to the long side edge 2a from the camera 200. The image (FIG. 6A) of the short side edge 2b is received, and the edge portion (FIG. 6B) forming the boundary between the window glass 2 and the front panel 1 is extracted.
그리고 판독부의 영상보정부는 추출된 테두리 영상으로부터 윈도우 필름의 테두리 라인(L1)과 전면 패널(1)의 테두리를 이루는 블랙매트릭스의 테두리 라인(L2)이 잘 드러나도록 명암을 조정(도 6c)과 라인 디테일을 조정(도 6d)하여 보다 선명한 영상으로 보정하면 크롭부가 검사영역과 테두리만 남기고 나머지 불필요한 부분을 모두 제거(도 6e)해 낸다.In addition, the image compensator of the readout unit adjusts the contrast so that the edge line L1 of the window film and the edge line L2 of the black matrix forming the edge of the front panel 1 are well exposed from the extracted edge image (FIG. 6C) and the line. By adjusting the detail (Fig. 6D) and correcting it to a clearer image, the cropping part leaves only the inspection area and the edge and removes all the unnecessary parts (Fig. 6E).
이렇게 보정이 완료된 영상에서는 윈도우 글래스(2)와 전면 패널(1)의 접착부위 경계를 이루는 윈도우 필름의 테두리 라인(L1)과 블랙매트릭스의 테두리 라인(L2)이 선명하게 드러나게 된다.In the corrected image, the edge line L1 of the window film and the edge line L2 of the black matrix, which form the boundary between the window glass 2 and the front panel 1, are clearly visible.
거리 측정부는 보정된 영상으로부터 상기 두 테두리 라인(L1, L2) 사이의 픽셀수를 카운트하여 상기 테두리 부위의 거리(D)를 산출한다.The distance measuring unit calculates the distance D of the edge portion by counting the number of pixels between the two edge lines L1 and L2 from the corrected image.
그리고 상기 판독부는 산출된 거리(D)가 허용범위 이상으로 좁거나 넓을 경우, 윈도우 글래스(2)가 일측으로 치우쳐 부착되었거나 경사지게 부착된 것으로 판단하고 불량으로 판독한다.When the calculated distance D is narrow or wider than the allowable range, the reading unit judges that the window glass 2 is attached to one side or obliquely and reads badly.
한편, 상기와 같이 판정부가 동작을 수행하는 동안 이송장치의 동작이 재개되면서 새로운 검사 대상이 되는 윈도우 글래스(2)가 검사위치로 이송되며, 조명(100)과 카메라(200)가 동작하면서 검사가 시작된다. 본 발명은 이러한 일련의 과정을 반복하면서 윈도우 글래스(2)의 부착 검사를 연속적으로 수행한다.On the other hand, while the operation of the transfer device is resumed while the determination unit performs the operation as described above, the window glass 2, which is a new inspection target, is transferred to the inspection position, and the inspection is performed while the illumination 100 and the camera 200 operate. Begins. The present invention continuously performs the attachment inspection of the window glass 2 while repeating this series of processes.
이와 같이, 도면을 참조하여 본 발명의 바람직한 실시예에 대해 상술하였으나 본 발명은 전술한 실시예에 한정되지 않으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진자가 본 발명의 사상을 벗어나지 않고 변형 가능하며, 이러한 변형은 본 발명의 권리범위에 속할 것이다.As described above, preferred embodiments of the present invention are described above with reference to the drawings, but the present invention is not limited to the above-described embodiments, and those skilled in the art may modify the present invention without departing from the spirit of the present invention. Possible, such modifications will fall within the scope of the invention.

Claims (9)

  1. 윈도우 글래스와 전면패널의 접착부위 경계를 이루는 테두리에 빛을 조사하는 조명;Illumination irradiating light to the border forming the boundary of the window glass and the adhesive portion of the front panel;
    윈도우 글래스와 전면 패널의 접착부위 경계를 이루는 테두리를 촬영하는 카메라; 및A camera for photographing an edge forming a boundary between the window glass and the front panel; And
    촬영된 영상로부터 윈도우 글래스의 저면에 부착된 윈도우 필름의 테두리 라인과 전면 패널의 테두리를 이루는 블랙매트릭스의 테두리 라인 사이의 거리를 산출하는 판독부를 포함하여 구성됨을 특징으로 하는 윈도우 글래스의 부착 위치 검사장치.And a reading unit which calculates a distance between the edge line of the window film attached to the bottom of the window glass and the edge line of the black matrix forming the edge of the front panel from the photographed image. .
  2. 제 1항에 있어서,The method of claim 1,
    상기 조명은 윈도우 글래스의 장변측 테두리와 단변측 테두리가 만나는 모서리부들 중 적어도 한군데 이상에 배치되어 윈도우 글래스의 상부로부터 이격되게 설치된 것을 특징으로 하는 윈도우 글래스의 부착 위치 검사장치.Wherein the illumination is disposed on at least one or more of the corner portion where the long side side edge and the short side edge of the window glass is disposed spaced apart from the upper portion of the window glass, the inspection apparatus of the window glass.
  3. 제 2항에 있어서,The method of claim 2,
    상기 카메라는 조명의 중앙에 배치되며;The camera is placed in the center of the illumination;
    상기 조명은 상기 카메라를 사이에 두고 서로 마주하도록 배치되어 윈도우 글래스의 장변측 테두리에 빛을 조사하는 제1조사부와 제2조사부 및 상기 제1조사부와 제2조사부에 대하여 직각방향으로 상기 카메라를 사이에 두고 서로 마주하게 배치되어 윈도우 글래스의 단변측 테두리에 빛을 조사하는 제3조사부와 제4조사부를 구비한 것을 특징으로 하는 윈도우 글래스의 부착 위치 검사장치.The illumination is disposed so as to face each other with the camera interposed therebetween so that the first irradiator and the second irradiator and the first irradiator and the second irradiator irradiate light to a long side edge of the window glass. And a third irradiating part and a fourth irradiating part arranged to face each other so as to face each other and irradiating light to the short side edge of the window glass.
  4. 제 3항에 있어서,The method of claim 3, wherein
    상기 제1조사부 내지 제4조사부는 각각 장변측 테두리와 단변측 테두리를 향해 경사지게 빛을 조사하는 것을 특징으로 하는 것을 윈도우 글래스의 부착 위치 검사장치.Wherein the first irradiation unit to the fourth irradiation unit, the position inspection apparatus for the window glass, characterized in that for irradiating light obliquely toward the long side edge and the short side edge, respectively.
  5. 제 1항에 있어서,The method of claim 1,
    상기 판독부는 카메라로부터 촬영된 영상을 획득하고 윈도우 필름의 테두리 라인과 블랙매트릭스의 테두리 라인을 포함하는 테두리 영상을 추출하는 영상 입력부와, 상기 영상 입력부로부터 추출된 테두리 영상을 선명하게 보정하는 영상 보정부와, 영상 보정부로부터 보정 영상을 획득하여 두 테두리 라인 사이의 거리를 산출하는 거리 측정부로 구성된 것을 특징으로 하는 윈도우 글래스의 부착 위치 검사장치.The reading unit acquires an image captured by a camera and extracts an edge image including an edge line of a window film and an edge line of a black matrix, and an image correction unit for sharply correcting an edge image extracted from the image input unit. And a distance measuring unit configured to obtain a corrected image from the image correcting unit and calculate a distance between the two edge lines.
  6. 제 5항에 있어서,The method of claim 5,
    상기 보정부는 테두리 영상의 콘트래스트를 조절하는 콘트래스트 조절부와, 상기 테두리 영상의 라인 디테일을 보정하는 라인 디테일 조절부와, 콘트래스트와 라인 디테일이 모두 조절된 보정된 영상중에서 테두리 이외의 불필요한 부위를 제거하는 크롭부로 구성된 것을 특징으로 하는 윈도우 글래스의 부착 위치 검사장치.The correction unit includes a contrast control unit for adjusting the contrast of the edge image, a line detail adjustment unit for correcting the line detail of the edge image, and a contrast image in the corrected image in which both contrast and line detail are adjusted. Attachment position inspection apparatus for a window glass, characterized in that consisting of a cropped portion to remove unnecessary parts of the.
  7. 제 5항에 있어서,The method of claim 5,
    상기 거리측정부는 보정영상로부터 픽셀수를 카운트하여 상기 두 테두리 라인 사이의 거리를 산출하는 것을 특징으로 하는 윈도우 글래스의 부착 위치 검사장치.And the distance measuring unit counts the number of pixels from the corrected image to calculate a distance between the two edge lines.
  8. 제 5항 또는 제 7항에 있어서,The method according to claim 5 or 7,
    상기 판독부는 거리측정부에서 산출한 두 테두리 라인 사이의 거리가 허용범위 이상으로 좁거나 넓을 경우에 한하여 불량으로 판정하는 것을 특징으로 하는 윈도우 글래스의 부착 위치 검사장치.And the reading unit determines that the distance is limited as long as the distance between the two edge lines calculated by the distance measuring unit is narrow or wider than an allowable range.
  9. 제 2항 내지 제 4항 중 어느 한 항에 있어서,The method according to any one of claims 2 to 4,
    상기 조명은 윈도우 글래스의 대각선으로 마주하는 한 쌍의 모서리부에 각각 설치된 것을 특징으로 하는 윈도우 글래스의 부착 위치 검사장치.Wherein the illumination is attached to the window glass mounting position inspection apparatus, characterized in that each installed on the pair of corners facing diagonally.
PCT/KR2016/012387 2016-09-05 2016-10-31 Device for inspecting attachment position of window glass for display WO2018043809A1 (en)

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