KR20030021341A - lamp device using a LED - Google Patents

lamp device using a LED Download PDF

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KR20030021341A
KR20030021341A KR1020010054403A KR20010054403A KR20030021341A KR 20030021341 A KR20030021341 A KR 20030021341A KR 1020010054403 A KR1020010054403 A KR 1020010054403A KR 20010054403 A KR20010054403 A KR 20010054403A KR 20030021341 A KR20030021341 A KR 20030021341A
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led
light
optical filter
optical
axis
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KR1020010054403A
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Korean (ko)
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임병현
최현호
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최현호
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/89Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901Optical details; Scanning details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/89Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901Optical details; Scanning details
    • G01N21/8903Optical details; Scanning details using a multiple detector array
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/89Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8914Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/55Optical parts specially adapted for electronic image sensors; Mounting thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/56Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/89Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901Optical details; Scanning details
    • G01N2021/8905Directional selective optics, e.g. slits, spatial filters

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  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE: A lamp device using a light emitting diode(LED) is provided to simply embody red, blue, green and white light and obtain a stable image from a long period of time as compared with conventional apparatus like a halogen or fluorescent lamp by using the LED capable of obtaining an optimum image through line scan cameras for various industries. CONSTITUTION: A lamp controller(100) controls every operation of LED light. A light source unit(200) continuously disposes a plurality of LED's(210) on a printed circuit board(PCB)(220), electrically connected to the lamp controller. An optical filter(300) is installed in front of the LED, separated from the LED by a predetermined distance, formed of a transparent material and a plate type. A sawtooth-type diffusion unit(310) is continuously disposed on a side surface of the optical filter, having a fine interval in a Y axis straight direction and recessed by a predetermined depth so that the light irradiated from the LED is diffused. An optical cylinder lens(400) functions as a convex lens to collect the light passing through the optical filter in a Y axis direction, formed of a hemi-cylindrical type of a transparent material in the front of the optical filter. An image obtaining target material(500) is positioned in a focal length of the optical cylinder lens.

Description

LED를 이용한 조명장치{lamp device using a LED}Lighting device using LED {lamp device using a LED}

본 발명은 LED를 이용한 조명장치에 관한 것으로, 특히 반도체 및 인쇄회로기판등 각종 산업현장의 검사용으로 사용되는 라인 스캔 카메라(Line Scan Camera)가 장시간 안정적으로 최적의 영상을 획득하고, 사용상의 편리함을 증대시키기 위한 LED(Light Emitting Diode)를 이용한 조명장치에 관한 것이다.The present invention relates to a lighting apparatus using LED, and in particular, a line scan camera used for inspection of various industrial sites such as semiconductors and printed circuit boards acquires an optimal image stably for a long time, and is convenient for use. It relates to a lighting device using a light emitting diode (LED) to increase the.

일반적으로 반도체 및 인쇄회로기판등의 조립불량등의 출시전 검사는 사람의 육안검사에서 카메라를 이용하여 자동으로 검사하는 방식으로 전환되고 있다. 이러한 검사에 사용되는 카메라는 특정한 영역을 촬영하는 구역 스캔 카메라(Area Scan Camera) 및 직선상의 구역을 촬영하는 라인 스캔 카메라(Line Scan Camera)등으로 구분된다.In general, pre-release inspection of assembly defects such as semiconductors and printed circuit boards has been shifted from a human inspection to an automatic inspection using a camera. Cameras used for such inspection are classified into an area scan camera that photographs a specific area, and a line scan camera that photographs an area in a straight line.

이와 같은 검사용 카메라가 제기능을 발휘하기 위해서는 조명장치가 반드시 필요한 데, 조명장치의 종류로는 할로겐 조명장치, 형광램프 조명장치 및 LED조명장치가 사용된다.In order to function properly, such an inspection camera requires a lighting device, and a type of lighting device includes a halogen lighting device, a fluorescent lamp lighting device, and an LED lighting device.

할로겐 조명장치는 도 1에서 보는 바와 같이, 조명 콘트롤부(10)와 광 가이드부(20)로 분리되어 광 가이드부(20)를 조명콘트롤부(10)에 연결시킨 착탈구조로 되어있다. 조명 콘트롤부(10)는 할로겐 램프(30)와 할로겐 램프(30)의 자외선를 제거하는 필터(40)와 발생되는 열을 외부로 방출하는 팬(50)으로 기본 구성을 이루고 있다.As shown in FIG. 1, the halogen lighting apparatus is separated into an illumination control unit 10 and a light guide unit 20, and has a detachable structure in which the light guide unit 20 is connected to the illumination control unit 10. The lighting control unit 10 includes a halogen lamp 30, a filter 40 for removing ultraviolet rays of the halogen lamp 30, and a fan 50 for emitting heat generated to the outside.

할로겐 조명장치는 할로겐 램프(30)에서 할로겐 빛이 방사되어 광가이드부(20)의 광섬유를 통해 전달하여 광 가이드부(20)의 종단에서는 일직선으로 배열된 빛이 검사 대상물에 비추게 된다. 광가이드부(20)의 종단에서는 빛의 균일도를 향상하기 위하여 프라스틱 표면을 미세하게 샌딩 처리한 확산기(Diffuser)를 부가하기도 한다.In the halogen lighting device, halogen light is radiated from the halogen lamp 30 and transmitted through the optical fiber of the light guide part 20 so that light arranged in a straight line at the end of the light guide part 20 shines on the inspection object. At the end of the light guide unit 20, in order to improve the uniformity of the light, a diffuser that finely sands the plastic surface may be added.

할로겐 조명장치는 다른 조명장치에 비하여 고휘도란 장점은 있으나, 광가이드부(20)를 통하여 출력되는 빛이 균일하지 않으며, 할로겐 램프의 수명이 500~1500시간으로 교체주기가 짧으며, 여러 가지 색상에 대응되기 위해서 별도의 색필터가 필요한 단점이 있으며, 열이 많이 발생하고 크기가 커 주변장치에 공간적인 부담이 되는 문제점이 있다.Halogen lighting device has the advantage of higher brightness than other lighting devices, but the light output through the light guide unit 20 is not uniform, the life cycle of the halogen lamp is short 500 ~ 1500 hours replacement cycle, various colors There is a disadvantage in that a separate color filter is required to cope with the problem, and a lot of heat is generated and a large size causes a burden on the peripheral device.

형광 램프 조명장치는 도 2에서 보는 바와 같이, 형광등(11)과 조명콘트롤러(22)로 구성되어 비교적 간단하다. 형광등(11)은 카메라(Camera)에서 읽어 들이는 주파수(20~40MHz)에 문제가 되지 않도록 고주파로 점등되며, 조명 콘트롤러(22)에 휘도 조절, Lamp 이상 진단 등 부가적인 기능이 부여되기도 한다.As shown in FIG. 2, the fluorescent lamp lighting apparatus is relatively simple because it is composed of a fluorescent lamp 11 and an illumination controller 22. The fluorescent lamp 11 is turned on at a high frequency so as not to be a problem in the frequency (20-40 MHz) read from the camera, and additional functions such as brightness control and lamp abnormality diagnosis may be provided to the lighting controller 22.

이와 같은 형광램프 조명장치는 램프의 수명이 1500시간으로 교체주기가 짧으며, 여러 가지 색상에 대응되기 위해서 별도의 색필터가 필요한 문제점이 있다.Such a fluorescent lamp lighting device has a short replacement cycle with a lamp life of 1500 hours, and there is a problem that a separate color filter is required to correspond to various colors.

종래의 LED(Light Emitting Diode) 조명장치는 도 3에서 보는 바와 같이 다수의 LED를 복수열로 배열하여 LED 빛이 검사대상물 중앙에 비춰지도록 한 구조인 LED 복수열 방식 및 LED 한 줄로 하여 타원 미러를 통해 빛을 집광하는 구조인 LED 타원 집광 방식으로 구분되는 데, LED 복수열 방식은 많은 LED가 필요하며, 고휘도에는 한계가 있으며, 빛의 균일도를 위해 확산기를 적용하는 경우 휘도가 현저히떨어지고, 조명장치의 크기가 큰 단점이 있으며, LED 타원 집광 방식은 빛의 균일도가 떨어지고, 고휘도에는 한계가 있는 문제점이 있었다.The conventional LED (Light Emitting Diode) lighting apparatus is an elliptical mirror by using a multi-row LED and a single row of LED structure that is arranged so that the LED light is reflected in the center of the inspection object by arranging a plurality of LEDs in a plurality of rows as shown in It is divided into LED ellipse condensing method, which is a structure that condenses light through, LED multi-column method requires a lot of LEDs, there is a limit to high brightness, when applying a diffuser for the uniformity of light, the brightness is significantly lowered, the lighting device There is a disadvantage in that the size of the large, the LED ellipsoidal focusing method has a problem in that the uniformity of the light falls, there is a limit to the high brightness.

종래 조명장치들의 광원으로는 대부분 할로겐, 형광 Lamp 등을 적용하고 있으나, 고휘도 구현 외의 광의 균일도, 다양한 색상구현, 광량 제어 편의성, 광원의 장수명 및 조명장치의 소형화등의 요인들에 대해서는 일부 문제점을 안고 있어 적용상의 불편함이 있었다.Although most of the conventional lighting devices use halogen and fluorescent lamps, they have some problems with factors such as light uniformity, various colors, convenience of light quantity control, long life of the light source, and miniaturization of lighting devices. There was inconvenience in application.

본 발명은 상기의 문제점을 해소하기 위하여 발명된 것으로, 각각의 LED를 인쇄회로기판(PCB)상에 일직선으로 다수개 배열한 광원부로부터 방사된 빛을 일측에 연속적으로 배열된 톱니형 또는 반원형의 확산부를 가짐으로서 X축으로 퍼트리는 특성을 가진 광학 필터(Light Shaping Diffuser) 및 광학필터의 후단에서 투명재질의 원통형 또는 반원통형으로 형성되어 확산된 빛을 Y축으로 집광하는 광학실린더 렌즈를 포함하여 산업현장의 검사용으로 사용되는 라인 스캔 카메라(Line Scan Camera)로 장시간 안정적으로 최적의 영상을 획득하고, 사용상의 편리함을 증대시키기 위한 LED(Light Emitting Diode)를 이용한 조명장치를 제공하는 데 그 목적이 있다.The present invention has been invented to solve the above problems, a sawtooth or semi-circular diffusion continuously arranged on one side of the light emitted from the light source unit arranged a plurality of each LED in a straight line on a printed circuit board (PCB) Including an optical filter (Light Shaping Diffuser) that has a characteristic of spreading on the X axis by having a wealth, and an optical cylinder lens that is formed in a cylindrical or semi-cylindrical shape of a transparent material at the rear end of the optical filter and focuses diffused light on the Y axis. It is a line scan camera that is used for on-site inspection, and the purpose is to provide a lighting device using LED (Light Emitting Diode) to acquire the optimal image stably for a long time and increase the convenience of use. have.

도 1은 종래의 할로겐 조명장치의 구조를 설명하기 위한 구성도이다.1 is a configuration diagram for explaining the structure of a conventional halogen lighting device.

도 2는 종래의 형광램프 조명장치의 구조를 설명하기 위한 구성도이다.2 is a configuration diagram for explaining the structure of a conventional fluorescent lamp lighting apparatus.

도 3은 종래의 LED조명장치의 구조를 설명하기 위한 구성도이다.3 is a configuration diagram for explaining the structure of a conventional LED lighting device.

도 4는 본 발명에 따른 LED를 이용한 조명장치의 구조를 보여주기 위한 분해사시도이다.Figure 4 is an exploded perspective view for showing the structure of the lighting apparatus using the LED according to the present invention.

도 5(a)와(b)는 도 4에서 광학필터의 구조를 보여주기 위한 확대도이다.5 (a) and 5 (b) are enlarged views for showing the structure of the optical filter in FIG.

도 6(a)와(b)는 본 발명에 따른 LED를 이용한 조명장치의 동작을 보여주기 위한 구성도이다.6 (a) and (b) is a configuration diagram for showing the operation of the lighting apparatus using the LED according to the present invention.

도 7은 본 발명에 따른 LED를 이용한 조명장치의 휘도 및 빛의 균일도를 보여주기 위한 시험 그래프이다.7 is a test graph for showing the luminance and uniformity of the light of the lighting apparatus using the LED according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

100 : 램프 콘트롤러 200 : 광원부100: lamp controller 200: light source

210 : LED 220 : 인쇄회로기판210: LED 220: printed circuit board

300 : 광학필터 310 : 확산부300: optical filter 310: diffuser

400 : 광학실린더 렌즈 500 : 영상획득 대상물400: optical cylinder lens 500: image acquisition target

이와 같은 목적을 달성하기 위한 본 발명은The present invention for achieving the above object

LED조명의 각종 동작을 제어하기 위한 램프 콘트롤러;A lamp controller for controlling various operations of the LED lighting;

램프 콘트롤러와 전기적으로 연결되며, 다수의 LED를 인쇄회로기판상에 연속선으로 배열하여 형성된 광원부;A light source unit electrically connected to a lamp controller and formed by arranging a plurality of LEDs in a continuous line on a printed circuit board;

LED의 전방에 일정간격 이격하여 형성되며, 투명재질의 판형으로 구성되고, 일측면에는 Y축 직선방향으로 미세한 간격을 가지고 일정 깊이로 함몰되어 연속적으로 배열된 톱니형의 확산부가 형성되어 LED에서 방사된 빛을 X축으로 확산시키기 위한 광학 필터;It is formed in the front of the LED at regular intervals, and is composed of a transparent plate shape, and one side is formed with a tooth-shaped diffused part continuously recessed at a predetermined depth with a fine interval in the Y-axis linear direction and radiated from the LED. An optical filter for diffusing the reflected light along the X axis;

광학 필터의 전방에 투명재질의 반원통형으로 형성되어. 볼록렌즈의 역할을 수행하여 광학필터를 통과한 빛을 Y축으로 집광시키기 위한 광학실린더 렌즈; 그리고,It is formed in the shape of semi-cylindrical transparent material in front of the optical filter. An optical cylinder lens for condensing light passing through the optical filter on the Y axis by performing a role of a convex lens; And,

광학실린더 렌즈의 초점거리에 영상획득 대상물이 위치하도록 형성되어 균일도 및 휘도를 증진시킨다.The image acquisition object is positioned at the focal length of the optical cylinder lens to improve uniformity and brightness.

본 발명의 바람직한 실시예에 따르면, 광학 필터(300)의 확산부(310)는 일측면에는 Y축 직선방향으로 미세한 간격과 깊이로 일정하게 함몰되어 연속적으로 배열된 반원형으로 형성되는 것을 특징으로 하는 LED를 이용한 조명장치.According to a preferred embodiment of the present invention, the diffusion part 310 of the optical filter 300 is formed in a semicircular shape that is continuously recessed at a constant interval with a fine interval and depth in the Y-axis linear direction on one side. Lighting device using LED.

본 발명의 다른 실시예에서는, 광학실린더 렌즈(400)는 투명재질의 원통형으로 형성되는 것을 특징으로 하는 LED를 이용한 조명장치.In another embodiment of the present invention, the optical cylinder lens 400 is an illumination device using an LED, characterized in that formed in a cylindrical shape of a transparent material.

이하 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부된 도면중 도 4는 본 발명에 따른 LED를 이용한 조명장치의 구조를 보여주기 위한 분해사시도이고, 도 6(a)와(b)는 본 발명에 따른 LED를 이용한 조명장치의 동작을 보여주기 위한 구성도이고, 도 7은 본 발명에 따른 LED를 이용한 조명장치의 휘도 및 빛의 균일도를 보여주기 위한 시험 그래프이다.4 is an exploded perspective view showing the structure of the lighting apparatus using the LED according to the present invention, Figure 6 (a) and (b) shows the operation of the lighting apparatus using the LED according to the present invention. 7 is a test graph for showing the luminance and uniformity of light of the lighting apparatus using the LED according to the present invention.

본 발명에 따른 조명장치는 도 4에서 보는 바와 같이, LED조명의 온/오프 동작을 제어하고, 휘도 조절, 램프의 이상 진단 기능을 보유하고 있는 램프 콘트롤러(100)와 전기적으로 연결되어 광원부(200)가 형성된다. 광원부(200)는 적, 청, 녹, 백, 오렌지 등의 색상을 가진 다수의 LED(210)를 인쇄회로기판(220)상에 연속선으로 배열하여 형성된다.As shown in FIG. 4, the lighting apparatus according to the present invention controls the on / off operation of LED lighting, and is electrically connected to a lamp controller 100 having a brightness control function and an abnormality diagnosis function of a lamp. ) Is formed. The light source unit 200 is formed by arranging a plurality of LEDs 210 having a color of red, blue, green, white, orange, etc. in a continuous line on the printed circuit board 220.

광원부(200)를 이루는 LED(210)의 전방에 일정간격 이격하여 도 5a에서 보는 바와 같이, 투명재질의 판형으로 구성되고, 일측면에는 Y축 직선방향으로 미세한 간격과 깊이로 일정하게 함몰되어 연속적으로 배열된 톱니형 또는 도 5b에서 보는 바와 같이 일측면에 연속적으로 배열된 반원형의 확산부(310)를 가짐으로서 광원부(200)를 이루는 다수개의 LED(210)에서 방사된 빛을 X축으로 퍼트리는 특성을 가진 광학 필터(Light Shaping Diffuser)(300)가 형성된다.As shown in FIG. 5a, the front of the LED 210 forming the light source unit 200 is spaced apart at a predetermined interval, and is formed in a transparent plate shape, and one side is continuously recessed at a small interval and depth in the Y-axis linear direction. As shown in FIG. 5B, the light emitted from the plurality of LEDs 210 constituting the light source unit 200 is scattered on the X-axis by having a saw-tooth-shaped or semicircular diffuser 310 continuously arranged on one side as shown in FIG. 5B. The tree is formed with an optical filter (Light Shaping Diffuser) 300 having characteristics.

광학 필터(300)의 전방에는 투명재질로 형성되어 원통형 또는 반원통형으로 형성되어 광학필터(300)를 통과한 빛을 Y축으로 집광시키기 위한 광학실린더 렌즈(400)가 형성된다. 광학실린더 렌즈(400)의 전면 즉, 광학실린더 렌즈(400)의 초점거리에 영상획득 대상물(500)이 위치하도록 형성되어 가장 많은 광량이 집광되도록 한다.In front of the optical filter 300 is formed of a transparent material is formed in a cylindrical or semi-cylindrical form is formed an optical cylinder lens 400 for condensing the light passing through the optical filter 300 in the Y-axis. The image acquisition target 500 is formed on the front surface of the optical cylinder lens 400, that is, the focal length of the optical cylinder lens 400, so that the largest amount of light is collected.

이와 같이 구성된 본 발명에 따른 LED를 이용한 라인 조명장치는 램프 콘트롤러(100)를 통하여 적, 청, 녹, 백, 오렌지 등의 색상을 가진 다수의 LED(210)를 인쇄회로기판(220)상에 연속선으로 배열하여 형성된 광원부(200)에 전원을 인가하면 각각의 LED(210)는 점등된다.The line lighting apparatus using the LED according to the present invention configured as described above has a plurality of LEDs 210 having colors of red, blue, green, white, orange, etc. on the printed circuit board 220 through the lamp controller 100. When power is applied to the light source unit 200 formed by arranging in a continuous line, each LED 210 is turned on.

광원부(200)에서 점등된 LED(210)의 빛은 도 6(a)에서 보는 바와 같이 일정각도(Θ)로 조사되어 광학 필터(300)를 통과하는데, 광학필터(300)는 도 5a 및 도 5b에서 보는 바와 같이, 일측면에 연속적으로 배열된 톱니형 또는 일측면에 연속적으로 배열된 반원형의 확산부(310)를 가진 투명재질의 판형으로 구성되어, 광원부(200)를 이루는 다수개의 LED(210)에서 방사된 빛을 X축으로 퍼트리는 특성을 가진다.The light of the LED 210 that is turned on in the light source unit 200 is irradiated at a predetermined angle Θ as shown in FIG. 6 (a) and passes through the optical filter 300. The optical filter 300 is illustrated in FIGS. As shown in FIG. 5B, a plurality of LEDs having a sawtooth shape continuously arranged on one side or a semi-circular diffuser 310 continuously arranged on one side thereof, and forming a light source part 200. The light emitted from 210 has the property of spreading on the X axis.

즉, 광학 필터(300)의 확산부는 Y축 직선방향으로 미세한 간격과 일정깊이로 일정하게 함몰된 구조 되어 있어 LED(210)에서 방사된 빛을 X축 방향으로 빛의 조사 각도(β)를 확대시키는 것이며, 이때, Y축의 조사 각도(α)는 변화가 없다.That is, the diffusion part of the optical filter 300 is recessed at a constant interval with a minute interval in the Y-axis linear direction to enlarge the irradiation angle β of the light emitted from the LED 210 in the X-axis direction. At this time, the irradiation angle α of the Y axis is not changed.

광학 필터(300)를 통과한 빛은 투명재질로 형성되어 반원통형으로 형성된 광학실린더 렌즈(400)를 통과하면서 집광되는 데, 광학실린더 렌즈(400)는 원통형 또는 반원통형으로 형성되어 볼록렌즈 기능을 가짐으로서 Y축으로 집광이 되며 X축의 빛은 광학 필터 통과 각도를 유지한다. 검사대상물(500)은 광학실린더 렌즈(400)의 초점거리에 위치하여 가장 많은 광량이 집광되도록 형성된다.Light passing through the optical filter 300 is condensed while passing through the optical cylinder lens 400 formed of a transparent material formed in a semi-cylindrical shape, the optical cylinder lens 400 is formed in a cylindrical or semi-cylindrical shape to function as a convex lens. It is focused on the Y-axis, and the light on the X-axis maintains the pass angle of the optical filter. The inspection object 500 is positioned at the focal length of the optical cylinder lens 400 and is formed to collect the most light.

본 발명에 따른 조명장치를 이루는 광학필터(300)는 Y축 직선방향으로 미세한 간격과 깊이로 일정하게 함몰된 확산부(310)을 가짐으로서 LED(210)에서 방사된 광원을 X축 즉, 열 방향으로 빛을 조사 각도를 확대함으로 각각의 LED(210)에서 방사된 빛이 중첩이 많아지게 함으로써 빛의 균일도를 높이는 효과를 얻게되며, 광학 실린터 렌즈(400)는 Y축 방향의 빛을 집광함으로써 초고휘도의 효과를 얻게 되는 것이다.The optical filter 300 constituting the lighting apparatus according to the present invention has a diffuser 310 that is constantly recessed at a minute interval and depth in the Y-axis linear direction, so that the light source emitted from the LED 210 is X-axis, that is, heat. By increasing the irradiation angle of the light in the direction to increase the uniformity of the light by increasing the overlap of the light emitted from each LED 210, the optical cylinder lens 400 collects light in the Y-axis direction By doing so, the effect of ultra high brightness is obtained.

본 발명의 조명장치는 도 8에서 보는 바와 같이, 본 출원인의 실험결과 휘도는 할로겐 조명 방식과 동등한 효과가 있으며, 빛의 균일도에서는 가장 우수한 효과가 있었으며, 단수 또는 복수로 적용이 가능하며 복수로 적용하는 경우에는 보다 증진된 휘도를 나타내었다.As shown in Figure 8, the lighting device of the present invention, the results of the applicant's experiment has the same effect as the halogen lighting method, the most excellent effect in the uniformity of light, it can be applied singly or plurally and apply plurally In the case of more enhanced brightness was shown.

상술한 바와 같이, 본 발명에 따른 LED를 이용한 조명장치는 각종 산업용 라인 스캔 카메라를 이용한 검사 목적의 최적의 영상을 얻을 수 있는 LED를 광원으로 한 반도체방식의 조명이기 때문에 적,청,녹,백색 등의 다양한 색조명을 간단히 구현 가능하고, 반영구적이므로 종래의 할로겐, 형광 램프 조명장치와 대비하여 장기간 안정적인 영상을 획득 가능하므로 검사장치의 높은 신뢰성 및 효율이 개선되고, LED를 이용하므로 소형화에도 유리한 효과가 있다.As described above, since the illumination device using the LED according to the present invention is a semiconductor type lighting system using LED as a light source for obtaining an optimal image for inspection purposes using various industrial line scan cameras, red, blue, green, and white Various color names can be easily realized and semi-permanent, so it is possible to obtain stable images for a long time compared with conventional halogen and fluorescent lamp lighting devices, improving the reliability and efficiency of the inspection device, and using LEDs, which is advantageous in miniaturization. There is.

이상에서 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하였으나, 본 발명은 이에 한정되는 것이 아니며 본 발명의 기술적 사상의 범위내에서 당업자에 의해 그 개량이나 변형이 가능하다.Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited thereto and may be improved or modified by those skilled in the art within the scope of the technical idea of the present invention.

Claims (3)

LED조명의 각종 동작을 제어하기 위한 램프 콘트롤러(100);A lamp controller 100 for controlling various operations of the LED lighting; 상기 램프 콘트롤러(100)와 전기적으로 연결되며, 다수의 LED(210)를 인쇄회로기판(220)상에 연속선으로 배열하여 형성된 광원부(200);A light source unit 200 electrically connected to the lamp controller 100 and formed by arranging a plurality of LEDs 210 on a printed circuit board 220 in a continuous line; 상기 LED(210)의 전방에 일정간격 이격하여 형성되며, 투명재질의 판형으로 구성되고, 일측면에는 Y축 직선방향으로 미세한 간격를 가지고 일정 깊이로 함몰되어 연속적으로 배열된 톱니형의 확산부(310)가 형성되어 상기 LED(210)에서 방사된 빛을 X축으로 확산시키기 위한 광학 필터(300);It is formed to be spaced apart in front of the LED 210 by a predetermined interval, it is composed of a plate of a transparent material, one side surface is a tooth-shaped diffusion portion 310 continuously recessed in a predetermined depth with a fine interval in the Y-axis linear direction. An optical filter (300) formed to diffuse light emitted from the LED (210) onto the X-axis; 상기 광학 필터(300)의 전방에 투명재질의 반원통형으로 형성되어. 볼록렌즈의 역할을 수행하여 상기 광학필터(300)를 통과한 빛을 Y축으로 집광시키기 위한 광학실린더 렌즈(400); 그리고,In front of the optical filter 300 is formed of a semi-cylindrical of transparent material. An optical cylinder lens 400 for performing a role of a convex lens and condensing the light passing through the optical filter 300 in the Y axis; And, 상기 광학실린더 렌즈(400)의 초점거리에 영상획득 대상물(500)이 위치하도록 형성되어 균일도 및 휘도를 증진시킨 LED를 이용한 조명장치.Illumination device using the LED is formed so that the image acquisition target 500 is located at the focal length of the optical cylinder lens 400 to improve the uniformity and brightness. 제 1 항에 있어서, 상기 광학 필터(300)의 확산부(310)는 일측면에는 Y축 직선방향으로 미세한 간격과 깊이로 일정하게 함몰되어 연속적으로 배열된 반원형으로 형성되는 것을 특징으로 하는 LED를 이용한 조명장치.The LED of claim 1, wherein the diffusion part 310 of the optical filter 300 is formed in a semi-circular shape that is continuously recessed on one side at regular intervals and depths in a linear Y-axis direction. Used lighting device. 제 1 항에 있어서, 상기 광학실린더 렌즈(400)는 투명재질의 원통형으로 형성되는 것을 특징으로 하는 LED를 이용한 조명장치.According to claim 1, wherein the optical cylinder lens 400 is an illumination device using an LED, characterized in that formed in a cylindrical shape of a transparent material.
KR1020010054403A 2001-09-05 2001-09-05 lamp device using a LED KR20030021341A (en)

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KR100890647B1 (en) * 2008-06-27 2009-03-27 와이즈플래닛(주) Particle inspection device using cylindrical lens array and rod lens
KR101312092B1 (en) * 2013-04-08 2013-09-25 유버 주식회사 Uv curing apparatus using uv led module
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