WO2001098706A1 - Illuminateur - Google Patents

Illuminateur Download PDF

Info

Publication number
WO2001098706A1
WO2001098706A1 PCT/JP2001/005156 JP0105156W WO0198706A1 WO 2001098706 A1 WO2001098706 A1 WO 2001098706A1 JP 0105156 W JP0105156 W JP 0105156W WO 0198706 A1 WO0198706 A1 WO 0198706A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
substrate
light emitting
emitting diode
lighting device
Prior art date
Application number
PCT/JP2001/005156
Other languages
English (en)
Japanese (ja)
Inventor
Kenji Yoneda
Original Assignee
Ccs Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ccs Inc. filed Critical Ccs Inc.
Priority to AU2001264304A priority Critical patent/AU2001264304A1/en
Publication of WO2001098706A1 publication Critical patent/WO2001098706A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/06—Means for illuminating specimens
    • G02B21/08—Condensers
    • G02B21/082—Condensers for incident illumination only
    • G02B21/084—Condensers for incident illumination only having annular illumination around the objective
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array

Definitions

  • the present invention relates to an illuminating device that is used, for example, when irradiating a product with light to inspect the appearance and scratches of the product such as a substrate in a factory or the like, or when mounting electronic components or the like on the substrate.
  • the lighting device shown in FIG. 4 is used as the lighting device. This is done by inserting a light emitting diode (LED) 32 into each of a large number of holes 31 formed in a substantially arc-shaped aluminum mounting base 30 shown in the figure and fixing them with a silicone adhesive. The wiring work is performed by soldering a wiring wire to the terminal of the light emitting diode 32.
  • LED light emitting diode
  • the macro lens 2 of the CCD camera 1 as shown in the figure is inserted into a hole 30 A formed inside the boss formed in the center of the mounting table 30, and an image is captured and inspection is performed. In addition, the inspection is performed by visual inspection through the hole 3OA.
  • the mounting base 30 Since the mounting base 30 must be provided with a large number of holes 31 with different angles with high precision, not only the processing cost for the mounting base 30 is high, but also the entire device is formed by the arc shape. There was a problem that the size was increased in the direction of penetration of the hole 30A.
  • a light-emitting diode (LED) 32 is inserted into each of the large number of holes 31 and fixed with a silicon adhesive, and a wiring work for soldering the terminals of each light-emitting diode 32 is performed. Therefore, a lot of work time was required, and the assembly cost was extremely high.
  • the heat of the soldering iron is applied to the light emitting diode 32 more than necessary, which causes a problem that the light emitting diode 32 is defective.
  • the light emitting diode 32 In order to concentrate the optical axis 32B of the light emitting diode 32 mounted on the mounting base 30 formed in an arc shape, the light emitting diode 32 must be arranged only on a concentric circle. However, it was difficult to arrange the light emitting diodes on adjacent concentric circles without any gaps, and there was a problem that the light amount could not be increased as desired.
  • the present invention seeks to solve the problem not only to avoid the failure of the light emitting diode due to the heat of the soldering iron, but also to reduce the size of the device and increase the amount of light.
  • Another object of the present invention is to provide a lighting device which is inexpensive and easy to assemble. Disclosure of the invention
  • the lighting device of the present invention spreads a large number of luminous bodies on an annular substrate having an opening formed substantially at the center in a state where an irradiation surface faces forward.
  • a Fresnel lens that collects the irradiation light to be irradiated and has an opening having substantially the same size as the opening is in contact with or close to the irradiation surface of the luminous body.
  • a large number of illuminants can be It can be mounted (spread) with the mounting position, that is, with the irradiation surface facing forward (substantially perpendicular to the surface of the substrate). Since the light emitter can be directly attached to the substrate, wiring work for the light emitting diode as in the conventional case can be eliminated. In addition, since the substrate is flat and a thin Fresnel lens is used, the size of the device in the direction in which the holes penetrate can be reduced.
  • the Fresnel lens is easy to process, it can be easily made into a square or perforated. Further, since the mounting position and the mounting angle of the luminous bodies are not restricted as in the related art, it becomes possible to arrange the adjacent luminous bodies in a dense state.
  • the size of the aperture provided in the substrate and the Fresnel lens is set to a size that can pass through the macro lens of the CCD camera, the image can be visually observed through the hole and the image captured by the CCD camera can be processed. Then, it is projected on a monitor and the like, and inspection and mounting of electronic components can be performed.
  • the luminous bodies can be arranged in a dense state in which a gap generated between them is minimized.
  • a light emitting diode as the light emitter is advantageous in terms of power consumption and heat generation as compared with a halogen lamp.
  • the light emitting diode can be used stably because the light amount does not greatly change over time unlike a halogen lamp.
  • the life of the halogen lamp is short, and the life of the light-emitting diode is remarkably long, and the deterioration speed is slow, although the life of the light-emitting diode is inferior with time.
  • the light emitting diode is strong in switching operation, and can easily perform instantaneous ON-OFF of light in a strobe-like manner.
  • FIG. 1 is a cross-sectional view showing a state in which a Mac aperture lens of a CCD camera is inserted into the center of the lighting device.
  • FIG. 2 is a front view of the lighting device.
  • FIG. 3 is a cross-sectional view of the lighting device.
  • FIG. 4 is a sectional view of a conventional lighting device. BEST MODE FOR CARRYING OUT THE INVENTION
  • This lighting device A casing 3 having an open box shape and having a circular opening 3 A formed at the center of the upper end and having a size in which the macro lens 2 of the CCD camera 1 can be inserted, and inside the casing 3.
  • a light source 4 provided in the camera.
  • the power supply to the light source 4 is performed via a power cable (not shown) connected to the substrate 5 described later.
  • the illuminating device is suitable not only for inspecting products such as substrates in factories and inspection rooms, but also for mounting electronic components on the substrates, but may be used for other purposes. .
  • An image obtained through the macro lens 2 of the CCD camera 1 inserted into the opening 3A may be image-processed and displayed on a monitor or the like, or may be visually observed from the opening 3A.
  • the illuminating device is supported in the state shown in FIG. 1 through another supporting member ⁇ dedicated supporting member.
  • the light source 4 has a square outer shape, and an irradiation surface 6A is directed forward on a ring-shaped substrate 5 having a circular opening 5K formed at the center where the macro lens 2 can be inserted.
  • a large number of light emitting diodes (LEDs) 6 as light emitters are laid out in the same posture in a state (a state perpendicular to the surface 5A of the substrate 5 or a state substantially perpendicular to the surface 5A of the substrate 5).
  • the irradiation light to be irradiated is focused, and one Fresnel lens 7 having a circular opening 7 K having the same size as the opening 5 K is brought into contact with the irradiation surface 6 A of the light emitting diode 6.
  • the optical axis 6 B of the light emitting diode 6 is passed through the Fresnel lens 7 to one point of the irradiation object H.
  • the light can be collected.
  • the irradiation angle of the light emitting diode 9 is set to about 1 °, very intense light can be obtained, but if the irradiation angle is 10 ° or less, the irradiation angle is set to more than 10 °.
  • the Fresnel lens 7 has a circular outer shape, and is formed by cutting a Fresnel lens produced by cutting a ring-shaped groove into a square so as to fit in the casing 1, and the opening 7K is formed.
  • the shape (including the size) of the Fresnel lens 7 is not limited to the shape shown in the figure. May be.
  • the Fresnel lens 7 was placed just before contacting the irradiation surface 6A of the light emitting diode 6, but was placed in contact with it.
  • the Fresnel lens 7 may be arranged close to the irradiation surface 6A of the light emitting diode 6 with a gap between them so as not to hinder the reception of light.
  • the Fresnel lens 7 is preferably made of a heat-resistant resin or the like, but may not necessarily be made of a heat-resistant material depending on the number of the light-emitting diodes 6 and the like.
  • the substrate 5 has the same shape (substantially square as viewed from the front) and the same size as the Fresnel lens 7, but the shape and size of a substantially circular, polygonal, or elliptical shape as viewed from the front are as follows. It can be changed freely.
  • the substrate 5 is arranged in a horizontal (horizontal) posture in which the surface 5A thereof is oriented in a horizontal direction.
  • the substrate 5 is arranged in a vertical (vertical) posture in which the surface is oriented vertically, or in an oblique posture. You may.
  • FIG. 1 and FIG. 3 show the board 5 which is arranged in a straight line in the horizontal direction, passes through the lead wires 6R of the light emitting diode 6, and is soldered.
  • the light emitting diode 6 has a lead wire 6R extending perpendicularly to the substrate 5, and as shown in FIG.
  • the upper and lower (vertical) divisions of the figure are divided into two.
  • the same number (87) on both sides of the dividing line 8 and the light emitting diodes 6 are regularly installed at symmetrical positions.
  • Four (any number of) light emitting diodes 6 are attached.
  • FIG. 2 as shown in FIG. 2, a large number of rows a and b of a group of light-emitting diodes 6 arranged in a straight line in the vertical direction of FIG.
  • the light emitting diodes 6 are arranged in a zigzag pattern so that the center position of each light emitting diode 6 is different in the horizontal direction of the figure.
  • the gap between 6 is minimized.
  • 2M shown in FIG. 2 indicates a groove located at the outermost periphery among a plurality of annular grooves of the Fresnel lens 7.
  • the mounting position of the light emitting diode 6 is not limited to the position shown in FIG. 2, but may be another arrangement.
  • the light emitting diodes 6 may be constituted by light emitting diodes of the same color or light emitting diodes of a plurality of colors.
  • 9 shown in FIG. A spacer serving also as a mounting member is provided at four corners for mounting the substrate 5 at an interval, and 10 is a light emitting diode between which the Fresnel lens 7 is mounted and the substrate 5 is provided. It is a spacer that also serves as a mounting member and is located at the four corners to secure the storage space for 6.
  • the specific configuration of these spacers 9, 10 is not limited to the one shown in the figure. Industrial applicability
  • a special mounting base as in the related art can be provided. Not only can the structure be unnecessary and inexpensive, but also a large number of light emitters can be mounted on the substrate in the same mounting posture, so that the mounting operation can be performed easily and quickly.
  • the mounting position and mounting angle of the luminous bodies are not restricted as in the conventional case, it is possible to arrange the luminous bodies adjacent to each other in a dense state, thereby increasing the spectral amount.
  • the lighting device can emit more intense light.
  • the light-emitting body can be directly attached to the substrate, wiring work for the light-emitting diode as in the related art can be eliminated, and the light-emitting diode does not become defective due to the heat of the soldering iron.
  • the substrate is flat and a thin Fresnel lens is used, the size of the device in the direction in which the holes penetrate can be reduced, and the size of the entire device can be reduced. Further, the Fresnel lens is easy to process, so that it can be easily formed into a square or perforated, which is advantageous in terms of manufacturing.
  • the image captured by the CCD camera can be processed. Can be projected on a monitor, etc., so that, for example, scratches that are overlooked by the naked eye or scratches at a location that is difficult to see with the naked eye can be reliably detected, and there is an advantage that electronic components can be easily mounted.
  • a plurality of rows of light emitter groups arranged in a straight line with respect to a substrate are arranged, and the light emitters are arranged in a staggered manner so that the center positions of the light emitters adjacent to each other are different. This makes it possible to arrange the light emitters in a dense state in which a gap generated between the light emitters is minimized, and it is possible to increase the spectral amount.
  • the surface of the substrate is divided into two by a dividing straight line passing through the center of the substrate, and the light emitting body is symmetrically placed on each of the two divided parts with the dividing straight line interposed therebetween.
  • the use of a light emitting diode as a light emitter is advantageous in terms of power consumption and heat generation as compared with a halogen lamp, and is advantageous in terms of use.
  • the light emitting diode can be used stably because the light quantity does not greatly change with the passage of time unlike an octogen lamp.
  • halogen lamps have a short life and deteriorate with time and become darker, but the life of the light emitting diode is dramatically longer and the deterioration speed is slower, which is advantageous in terms of use.
  • the light-emitting diode is strong in switching operation, and can easily perform strobe-like light ON-OFF, which is not possible with a halogen lamp, thereby saving power.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Led Device Packages (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un illuminateur bon marché comprenant des diodes photoémettrices peu susceptibles de tomber en panne du fait d'une surchauffe du fer de soudage. Cet illuminateur de petites dimensions, qui est capable d'émettre une lumière relativement intense, est facile de montage. En l'occurrence, on prend un grand nombre de photoémetteurs (6) dont les surfaces émettrices (6A) sont tournées vers l'avant, et on les dispose sur un substrat annulaire (5) présentant un orifice (5K) près du centre. Une lentille de Fresnel (7) est disposée au contact des faces émettrices (6A) des émetteurs (6). Cette lentille de Fresnel (7) servant à focaliser la lumière de chaque émetteur (6) présente une ouverture (7K) dont les dimensions sont sensiblement les mêmes que celles de l'ouverture (5K) du substrat.
PCT/JP2001/005156 2000-06-20 2001-06-15 Illuminateur WO2001098706A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001264304A AU2001264304A1 (en) 2000-06-20 2001-06-15 Illuminator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000184719A JP2002008410A (ja) 2000-06-20 2000-06-20 照明装置
JP2000-184719 2000-06-20

Publications (1)

Publication Number Publication Date
WO2001098706A1 true WO2001098706A1 (fr) 2001-12-27

Family

ID=18685130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/005156 WO2001098706A1 (fr) 2000-06-20 2001-06-15 Illuminateur

Country Status (3)

Country Link
JP (1) JP2002008410A (fr)
AU (1) AU2001264304A1 (fr)
WO (1) WO2001098706A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080122927A1 (en) * 2006-02-28 2008-05-29 Sony Corporation Monitoring camera
WO2011076215A1 (fr) 2009-12-21 2011-06-30 Martin Professional A/S Collecteur de lumière à lentilles centrale et périphérique complémentaires asymétriques en rotation
EP1549988B2 (fr) † 2002-10-08 2011-10-05 Karl Kaps GmbH & Co KG Dispositif d'eclairage pour un instrument d'agrandissement optique et instrument d'agrandissement optique
EP2881651A1 (fr) 2013-12-05 2015-06-10 Martin Professional ApS Luminaire en saillie avec une pluralité de microlentilles emballées dans un motif circulaire dense optimisé
EP2881653A1 (fr) 2013-12-05 2015-06-10 Martin Professional ApS Dispositif d'éclairage avec différentes distances entre des sources de lumière et de petites lentilles
CN104696900A (zh) * 2015-03-31 2015-06-10 合肥鑫晟光电科技有限公司 光源装置及对位标记照相识别系统
EP2881650A1 (fr) 2013-12-05 2015-06-10 Martin Professional ApS Collecteur de lumière avec une pluralité de microlentilles fusionnées ayant une puissance optique différente
CN106352288A (zh) * 2015-07-17 2017-01-25 古德里奇照明系统有限责任公司 飞机led灯单元
US9714745B2 (en) 2011-06-29 2017-07-25 Martin Professional Aps Color mixing illumination device
US9732942B2 (en) 2011-06-10 2017-08-15 Martin Professional Aps Color mixing illumination device
US10161598B2 (en) 2016-09-04 2018-12-25 Martin Professional Aps Light fixture comprising light sources, lenslets and a retro-reflector

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Publication number Priority date Publication date Assignee Title
JP2005038605A (ja) 2002-02-12 2005-02-10 Daisei Denki Kk 照明器具
JP2004170858A (ja) * 2002-11-22 2004-06-17 Canon Inc 画像読取装置
JP4493482B2 (ja) * 2004-03-31 2010-06-30 シーシーエス株式会社 光照射装置
JP2007066630A (ja) * 2005-08-30 2007-03-15 Kojima Press Co Ltd 車両用マップランプ装置
JP5276875B2 (ja) * 2008-03-31 2013-08-28 富士フイルム株式会社 フィルム欠陥検査方法及び装置
JP5769102B2 (ja) * 2010-10-07 2015-08-26 タカラベルモント株式会社 医療用照明装置
JP5722605B2 (ja) * 2010-12-08 2015-05-20 株式会社Ihi 水中目視検査装置
JP2013161611A (ja) * 2012-02-03 2013-08-19 Optex Fa Co Ltd 環状照明装置

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US5038258A (en) * 1989-03-02 1991-08-06 Carl-Zeiss-Stiftung Illuminating arrangement for illuminating an object with incident light
US5690417A (en) * 1996-05-13 1997-11-25 Optical Gaging Products, Inc. Surface illuminator with means for adjusting orientation and inclination of incident illumination
US5897195A (en) * 1997-12-09 1999-04-27 Optical Gaging, Products, Inc. Oblique led illuminator device
JPH11195616A (ja) * 1989-02-14 1999-07-21 Nippon Soken Inc 熱処理装置及び熱処理方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11195616A (ja) * 1989-02-14 1999-07-21 Nippon Soken Inc 熱処理装置及び熱処理方法
US5038258A (en) * 1989-03-02 1991-08-06 Carl-Zeiss-Stiftung Illuminating arrangement for illuminating an object with incident light
US5690417A (en) * 1996-05-13 1997-11-25 Optical Gaging Products, Inc. Surface illuminator with means for adjusting orientation and inclination of incident illumination
US5897195A (en) * 1997-12-09 1999-04-27 Optical Gaging, Products, Inc. Oblique led illuminator device

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1549988B2 (fr) † 2002-10-08 2011-10-05 Karl Kaps GmbH & Co KG Dispositif d'eclairage pour un instrument d'agrandissement optique et instrument d'agrandissement optique
US10368038B2 (en) 2006-02-28 2019-07-30 Sony Corporation Monitoring camera
US20080122927A1 (en) * 2006-02-28 2008-05-29 Sony Corporation Monitoring camera
WO2011076215A1 (fr) 2009-12-21 2011-06-30 Martin Professional A/S Collecteur de lumière à lentilles centrale et périphérique complémentaires asymétriques en rotation
WO2011076214A1 (fr) 2009-12-21 2011-06-30 Martin Professional A/S Capteur de lumière à lentille centrale pourvue d'une extension
US10190751B2 (en) 2011-06-10 2019-01-29 Martin Professional Aps Multi-mode illumination device
US9732942B2 (en) 2011-06-10 2017-08-15 Martin Professional Aps Color mixing illumination device
US9714745B2 (en) 2011-06-29 2017-07-25 Martin Professional Aps Color mixing illumination device
US9752748B2 (en) 2013-12-05 2017-09-05 Martin Professional Aps Projecting light fixture with a plurality of lenslets packed in an optimized dense circular pattern
EP2881651A1 (fr) 2013-12-05 2015-06-10 Martin Professional ApS Luminaire en saillie avec une pluralité de microlentilles emballées dans un motif circulaire dense optimisé
US10551028B2 (en) 2013-12-05 2020-02-04 Harman Professional Denmark Aps Illumination device with different distances between light sources and lenslets
US10502391B2 (en) 2013-12-05 2019-12-10 Harman Professional Denmark Aps Light collector with a plurality of lenslets packed in an optimized dense circular pattern
US9217551B2 (en) 2013-12-05 2015-12-22 Martin Professional Aps Light collector with a plurality of merged lenslets having different optical power
EP2881650A1 (fr) 2013-12-05 2015-06-10 Martin Professional ApS Collecteur de lumière avec une pluralité de microlentilles fusionnées ayant une puissance optique différente
EP2881653A1 (fr) 2013-12-05 2015-06-10 Martin Professional ApS Dispositif d'éclairage avec différentes distances entre des sources de lumière et de petites lentilles
EP2881652A1 (fr) 2013-12-05 2015-06-10 Martin Professional ApS Collecteur de lumière avec une pluralité de lentilles emballées dans un motif circulaire dense optimisé
CN104696900A (zh) * 2015-03-31 2015-06-10 合肥鑫晟光电科技有限公司 光源装置及对位标记照相识别系统
US20170032511A1 (en) * 2015-03-31 2017-02-02 Boe Technology Group Co., Ltd. Light source device and alignment mark shooting and recognizing system
US20190259151A1 (en) * 2015-03-31 2019-08-22 Boe Technology Group Co., Ltd. Light source device and alignment mark shooting and recognizing system
WO2016155184A1 (fr) * 2015-03-31 2016-10-06 京东方科技集团股份有限公司 Dispositif de source lumineuse et système d'identification photographique de repère d'alignement
CN106352288A (zh) * 2015-07-17 2017-01-25 古德里奇照明系统有限责任公司 飞机led灯单元
US10161598B2 (en) 2016-09-04 2018-12-25 Martin Professional Aps Light fixture comprising light sources, lenslets and a retro-reflector

Also Published As

Publication number Publication date
AU2001264304A1 (en) 2002-01-02
JP2002008410A (ja) 2002-01-11

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