CN100426021C - Visual inspection lighting device based on reflective light and transmission light - Google Patents
Visual inspection lighting device based on reflective light and transmission light Download PDFInfo
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- CN100426021C CN100426021C CNB2006100928468A CN200610092846A CN100426021C CN 100426021 C CN100426021 C CN 100426021C CN B2006100928468 A CNB2006100928468 A CN B2006100928468A CN 200610092846 A CN200610092846 A CN 200610092846A CN 100426021 C CN100426021 C CN 100426021C
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- light
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- lighting device
- emission part
- transmitted light
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
-
- 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
- G01N21/8803—Visual inspection
-
- 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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/33—Acousto-optical deflection devices
- G02F1/335—Acousto-optical deflection devices having an optical waveguide structure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to a visual checking lighting device, which is based on reflective light and transmission light. Wherein, it is characterized in that: the upper part of frame (1) is arranged with the light emitter (2) for emitting light and the incline mirror (3) opposite to the emitter; the lower part of frame is arranged with the incline transmission light mirror (5) for checking object; and a Fresnel lens (6) is arranged between the mirror and the transmission light mirror.
Description
Technical field
The present invention relates to be used for the lighting device of the various inspection objects of visual examination such as polarizing coating and crystal liquid substrate etc., particularly relate to visual inspection lighting device based on reflected light and transmitted light both sides.
Background technology
In the routine inspection that is used for detecting such as the defective of inspection objects such as polarizing coating, under most situation, use has been equipped with the transmission illuminator of milky acrylic acid diffusion sheet in three-color fluorescent lamp, carry out visual examination so that use from above-mentioned fluorescent light emission through the scattered light that aforesaid propylene acid diffusion sheet also sees through above-mentioned inspection object.
On the other hand, patent documentation 1 has been described following method: the optical sheet that will constitute by the laminated polarizing reflector plate shines thereon light, so that according to checking defective from the light of above-mentioned optical sheet reflection as checking object obliquely.
[patent documentation 1] spy opens the 2001-116925 communique
But, use the routine inspection of the transmission illuminator that possesses fluorescent light to have following problem:
1) in three-color fluorescent lamp, used the lighting device of milky acrylic acid diffusion sheet can only be used for inspection based on transmitted light.
2) since with fluorescent-lamp-use in illumination, so when checking, can not be the color that is suitable for the different wave length of various defect types with the face variable color.On the other hand, the only scattered light of fluorescent light can not shine for defective and observe the converging light in addition of effective scattered light.Moreover, because this light is dispersed,, can not carry out the inspection under the abundant illumination level so 2 powers of distance descend between illumination and above-mentioned light source and the above-mentioned inspection object inversely proportionally.
3) in the illumination of fluorescent light, colour temperature is 3000 to 5000 ° of K, can not obtain the light of 6000 ° of K that approach sunshine of being suitable for checking.
4) in the illumination of fluorescent light, above-mentioned color rendering degree, promptly represent the outward appearance of color or poor index (Ra) is about 88.Like this, when observing defective, defective visibility and color low visibility, defective is leaked and is looked the rate height.
5) in inspection, can not distinguish the upright position (concavo-convex) of defective according to the type of the defective of checking object based on transmitted light.Moreover, owing to can only use scattered light, so miss small defective easily.
Summary of the invention
The objective of the invention is to solve the above problems.
In order to solve the above problems, the present invention proposes a kind of visual inspection lighting device based on reflected light and transmitted light, it is characterized in that: configuration is used for the light emission part of emissive lighting light and the catoptron of the inclination faced with above-mentioned smooth emission part in the top of shell, the transmitted light catoptron of the inclination of checking object is equipped with in configuration in the bottom of above-mentioned shell, disposes Fresnel lens between above-mentioned catoptron and above-mentioned transmitted light catoptron.
Moreover the present invention proposes above-mentioned structure, wherein, disposes above-mentioned smooth emission part and above-mentioned catoptron at left and right sides, simultaneously above-mentioned transmitted light mirror arrangement is become its visualization one side to be positioned at the place ahead.
Moreover the present invention proposes above-mentioned structure, wherein, the scattering liquid crystal sheet is set on the upper surface of above-mentioned Fresnel lens.
Moreover the present invention proposes above-mentioned structure, wherein, above-mentioned smooth emission part is connected with the light source of installing outside above-mentioned shell through optical fiber, and above-mentioned smooth emission part is set to have the lens combination of amplifying beam functions.
Moreover the present invention proposes above-mentioned structure, and wherein, above-mentioned smooth emission part has zoom function.
Moreover the present invention proposes above-mentioned structure, and wherein, above-mentioned smooth emission part can be installed the variable color optical filter.
Moreover the present invention proposes above-mentioned structure, and wherein, above-mentioned light source is the short arc metal halid lamp.
In above-mentioned structure, utilize mirror reflects from the illumination light of light emission part emission and shine on the Fresnel lens.Utilize Fresnel lens to make this optical convergence, this converging light shines on the inspection object on the transmitted light catoptron.Shine the illumination light of checking on the object and be reflected, advance to the direction of the observer's who is positioned at shell the place ahead eyes.Thereby, but the observer can come observation and inspection object and its defective of procuratorial work according to reflected light.
Since reflected light is used for visual examination, the upright position (concavo-convex) of defective can be distinguished according to the type of defective, in addition, because this light is not scattered light, so can easily detect small defective yet.
On the other hand, under the situation of checking the object light-permeable, the illumination light that shines on the inspection object through Fresnel lens sees through the inspection object and by the transmitted light mirror reflects, through checking object, is presented on eyes the place ahead of observer once more.Like this, not only can carry out, and can carry out inspection based on transmitted light based on catoptrical inspection.
As mentioned above, owing to shine the converging light that the illumination light checked on the object has been assembled by Fresnel lens, so, can utilize visualization to carry out good inspection no matter irradiation distance how, all can obtain constant illumination level on the inspection object.
Moreover the left and right sides in the top of above-mentioned shell disposes above-mentioned smooth emission part and above-mentioned catoptron, and configuration transmitted light catoptron in the bottom of above-mentioned shell makes its visualization one side be positioned at the place ahead simultaneously.Like this, above-mentioned illumination light does not shine directly on the eyes, can not produce harmful effect to eyes.
Be provided with on the upper surface of above-mentioned Fresnel lens in the structure of scattering liquid crystal sheet, above-mentioned scattering liquid crystal sheet can be a light-scattering state from the transmittance Status Change as required, thereby also scattered light can be used for visual examination.In this case, because illumination light sees through above-mentioned Fresnel lens after by the scattering of above-mentioned scattering liquid crystal sheet, so, also assembled by above-mentioned Fresnel lens although the illumination light that shines on the inspection object is a scattered light.Thereby, can prevent that the illumination that causes because of irradiation distance from descending.
If above-mentioned smooth emission part is connected with the light source of installing outside above-mentioned shell and above-mentioned smooth emission part is set to have the lens combination of amplification beam functions through optical fiber, then the degree of freedom Gao Bingke of An Zhuaning easily changes to ultraviolet light or infrared light etc. with above-mentioned light source from visible light.
If above-mentioned smooth emission part has zoom function, then can suitably regulate the range of exposures of illumination light according to the size of above-mentioned inspection object.
Moreover, if above-mentioned smooth emission part can be installed the variable color optical filter, then can select the color of light source, so that be suitable for the inspection of the defective and the inspection purpose of above-mentioned inspection object.
Moreover, if the short arc metal halid lamp that average color rendering degree is high then can strengthen defective visibility as the light source of illumination light, reduce defective and leak the rate of looking.
Description of drawings
Fig. 1 is the schematic sectional view of front one side that the embodiment of visual inspection lighting device of the present invention is shown.
Fig. 2 is the sectional view along the A-A line of Fig. 1.
Fig. 3 is the sectional view along the B-B line of Fig. 1 that is used for schematically illustrating the adjusting action of transmitted light catoptron.
Fig. 4 is the sectional view along the C-C line of Fig. 3 that is used for schematically illustrating the adjusting action of catoptron.
Fig. 5 is the sectional view that is shown schematically in the structure that the scattering liquid crystal sheet is set on the Fresnel lens.
Embodiment
Hereinafter with reference to accompanying drawing the pattern of the present invention that realizes is described.
Fig. 1 is the schematic cross sectional view of front one side that the embodiment of visual inspection lighting device of the present invention is shown.Fig. 2 is the sectional view along the A-A line of Fig. 1.Fig. 3 is used for schematically illustrating that mirror regulates the sectional view along the B-B line of Fig. 1 of action.Fig. 4 is used for schematically illustrating that mirror regulates the sectional view along the C-C line of Fig. 3 of action.
In these figure, symbol 1 expression forms the shell of the case shape of front openings.On the top of shell 1, in the left side of figure the light emission part 2 that is used for emissive lighting light is installed, on the right side of figure the catoptron 3 of inclination is installed, make it face light emission part 2.As shown in Figure 4, the frame portion 4 of catoptron 3 is installed rotatably in shell 1, so that its pitch angle is adjustable.But,, can keep this pitch angle constant by after suitably having regulated above-mentioned pitch angle with the relative position relation of light emission part 2.
In the bottom of shell 1, the transmitted light catoptron 5 that tilts is configured to its visualization one side is positioned at the place ahead.Moreover, in above-mentioned shell, configuration Fresnel lens 6 between catoptron 3 and transmitted light catoptron 5.As shown in Figure 3, can make frame portion 7 rotation of transmitted light catoptron 5 and move,, can suitably regulate the visualization direction so that can regulate its pitch angle at any time.The pitch angle governor motion can be arbitrarily.
In above-mentioned structure, be exaggerated through the illuminating bundle that optical fiber 9 propagates into light emission part 2 from light source 8, this light beam irradiates of having amplified is to the catoptron 3.Utilize the illumination light of catoptron 3 reflections, shine then on the Fresnel lens 6 from 2 emissions of light emission part.Utilize Fresnel lens 6 to assemble these light, this converging light shines on the inspection object 10 on the transmitted light catoptron 5.
Shine illumination light inspected object 10 reflections checked on the object 10 as described above and advance to the observer's in the place ahead that is positioned at shell 1 eyes direction.Thereby the observer can check that object 10 is to check its defective according to this viewed in reflected light.
On the other hand, checking that object 10 as polarizing coating etc. like that under the situation of light-permeable, shine the illumination light of checking on the object 10 through Fresnel lens 6 and see through inspection object 10 arrival transmitted light catoptrons 5, by its reflection, see through once more and check object 10, be presented on eyes the place ahead of observer.Like this, under the situation of checking object 10 light-permeables, not only can carry out, and can carry out inspection based on transmitted light based on catoptrical inspection.
As mentioned above, be the converging light of having assembled by Fresnel lens 6 owing to shine the illumination light of checking on the object 10, so, can utilize visualization to carry out good inspection no matter irradiation distance how, all can obtain constant illumination on inspection object 10.
Moreover left and right sides configuration light emission part 2 and catoptron 3 on shell 1 top at the bottom of shell 1 configuration transmitted light catoptron 5, make its visualization one side be positioned at the place ahead simultaneously.Like this, above-mentioned illumination light does not shine directly on the eyes, can not produce harmful effect to eyes.As shown in Figure 2, the upper opening with shadow shield 11 covering shells 1 can further improve preventing above-mentioned dysgenic effect.
As mentioned above, in the present invention, as schematically illustrated among Fig. 5, scattering liquid crystal sheet 12 can be set on the upper surface of Fresnel lens 6.In the present embodiment, if for example apply control voltage etc. as required, can be light-scattering state from the transmittance Status Change then with scattering liquid crystal sheet 12, can carry out visual examination like this based on scattered light.
In this case, because illumination light sees through Fresnel lens 6 by 12 scatterings of scattering liquid crystal sheet and thereafter, so though shine illumination light on the inspection object 10 and be scattered but still can be assembled by Fresnel lens 6.Thereby, can prevent that the illumination that causes because of irradiation distance from descending.
In embodiment described above, light emission part 2 is connected with the light source of installing in the outside of shell 18 through optical fiber 9.Like this, the degree of freedom Gao Bingke of installation easily changes to ultraviolet light or infrared light etc. with above-mentioned light source from visible light.
Moreover, if will be such as the average color rendering degree of short arc metal halid lamp etc. high light source is as light source 8, then can strengthen defective visibility, reduce defective and leak the rate of looking, because expression color rendering degree be the index (Ra) of color visibility of light source under the situation of metal halid lamp up to about 95, and this index of fluorescent light is about 88.
Moreover, if light emission part 2 has zoom function, then can suitably regulate the range of exposures of illumination light according to the size of checking object 10.
Moreover, if the light emission part can be installed the variable color optical filter, then can select the color of light source, so that be suitable for the inspection of the defective and the inspection purpose of above-mentioned inspection object.
Simultaneously, in the present invention, except key element described above, also universal amplifier, benchmark polaroid and low-pressure sodium lamp can be installed.Like this, can provide the lighting device that can carry out more senior visual examination.In the front of said apparatus, be that above-mentioned universal amplifier and said reference polaroid are installed in observer's front.Above-mentioned low-pressure sodium lamp is installed on light emission part 2.
Because the present invention has said structure, therefore, according to reflected light and transmitted light, not only can carry out the visual examination of polarizing coating, crystal liquid substrate etc., and can carry out the visual examination of printed article master, bionics etc.Moreover, if light source is suitably for example changed to ultraviolet or infrared lamp from visible lamp, then above-mentioned illumination light can be used for the growth of natural food of agriculture field and the growth of livestock products, also can be used for semi-conductive exposure device, can provide lighting device with low cost with premium properties.
Claims (7)
1. visual inspection lighting device based on reflected light and transmitted light is characterized in that:
Configuration is used for the light emission part of emissive lighting light and the catoptron of the inclination faced with above-mentioned smooth emission part in the top of shell, that check object and the transmitted light catoptron right inclination of above-mentioned mirror surface are equipped with in configuration thereon in the bottom of above-mentioned shell, dispose Fresnel lens between above-mentioned catoptron and above-mentioned transmitted light catoptron.
2. the visual inspection lighting device based on reflected light and transmitted light described in claim 1 is characterized in that:
In above-mentioned smooth emission part and the above-mentioned catoptron one is configured in the right side and another is configured in the left side, simultaneously above-mentioned transmitted light mirror arrangement is become its visualization one side to be positioned at the place ahead.
3. the visual inspection lighting device based on reflected light and transmitted light described in claim 1 is characterized in that:
The scattering liquid crystal sheet is set on the upper surface of above-mentioned Fresnel lens.
4. the visual inspection lighting device based on reflected light and transmitted light described in claim 1 is characterized in that:
Above-mentioned smooth emission part is connected with the light source of installing outside above-mentioned shell through optical fiber, above-mentioned smooth emission part is set to have the lens combination of amplifying beam functions.
5. the visual inspection lighting device based on reflected light and transmitted light described in claim 1 is characterized in that:
Above-mentioned smooth emission part has zoom function.
6. the visual inspection lighting device based on reflected light and transmitted light described in claim 1 is characterized in that:
Above-mentioned smooth emission part can be installed the variable color optical filter.
7. the visual inspection lighting device based on reflected light and transmitted light described in claim 4 is characterized in that:
Above-mentioned light source is the short arc metal halid lamp.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-178290 | 2005-06-17 | ||
| JP2005178290 | 2005-06-17 | ||
| JP2005178290A JP2006349576A (en) | 2005-06-17 | 2005-06-17 | Lighting system for visual inspection by reflected light and transmitted light |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1880983A CN1880983A (en) | 2006-12-20 |
| CN100426021C true CN100426021C (en) | 2008-10-15 |
Family
ID=37519246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100928468A Expired - Fee Related CN100426021C (en) | 2005-06-17 | 2006-06-16 | Visual inspection lighting device based on reflective light and transmission light |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2006349576A (en) |
| KR (1) | KR100873057B1 (en) |
| CN (1) | CN100426021C (en) |
| TW (1) | TW200702658A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592812B (en) * | 2009-06-23 | 2012-05-23 | 友达光电（苏州）有限公司 | Display panel and pixel defect check method thereof |
| CN103803125A (en) * | 2014-02-24 | 2014-05-21 | 江苏新美星包装机械股份有限公司 | LED lamp inspection device in beverage production line |
| CN109459877B (en) * | 2018-08-15 | 2021-04-06 | 中国电子科技集团公司第五十五研究所 | Display screen band frame attaching method, attaching device and display thereof |
| CN110907474A (en) * | 2019-12-10 | 2020-03-24 | 江苏奥蓝工程玻璃有限公司 | Defect collecting device for glass coating visual inspection |
| CN116359230B (en) * | 2023-05-26 | 2023-08-29 | 北京博兴远志科技有限公司 | Permanent magnet surface concave-convex defect detection system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11295242A (en) * | 1998-04-10 | 1999-10-29 | Matsushita Electric Ind Co Ltd | X-ray substrate inspection equipment and visible light reflective film for x-ray |
| JP2001116925A (en) * | 1999-10-20 | 2001-04-27 | Sumitomo Chem Co Ltd | Method of inspecting optical sheet |
| JP2004101403A (en) * | 2002-09-11 | 2004-04-02 | Tokyo Seimitsu Co Ltd | Visual inspection device |
| JP2004163664A (en) * | 2002-11-13 | 2004-06-10 | Dainippon Printing Co Ltd | Method of inspecting cholesteric liquid crystal layer, inspection apparatus therefor and method of manufacturing cholesteric liquid crystal layer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07272679A (en) * | 1994-03-31 | 1995-10-20 | Toshiba Lighting & Technol Corp | Short-arc metal halide lamp, discharge lamp lighting device, and liquid crystal projector |
| JP3201922B2 (en) * | 1995-03-03 | 2001-08-27 | 東芝機械株式会社 | Electron beam drawing device and stage position measuring device |
| JPH09222396A (en) * | 1996-02-19 | 1997-08-26 | Toray Ind Inc | Defect inspection method and device |
| JP2925539B1 (en) * | 1998-07-10 | 1999-07-28 | オリンパス光学工業株式会社 | Lighting equipment for macro inspection |
| KR100400455B1 (en) * | 2001-04-26 | 2003-10-01 | 엘지전자 주식회사 | lighting apparatus for inspected board |
| KR100738741B1 (en) * | 2002-05-31 | 2007-07-12 | 올림푸스 가부시키가이샤 | Macro illumination apparatus |
| KR100508190B1 (en) * | 2003-11-11 | 2005-08-17 | 주식회사 에이디피엔지니어링 | A Flood Light for appearance inspection of LCD surface |
-
2005
- 2005-06-17 JP JP2005178290A patent/JP2006349576A/en active Pending
-
2006
- 2006-06-01 TW TW095119425A patent/TW200702658A/en unknown
- 2006-06-16 CN CNB2006100928468A patent/CN100426021C/en not_active Expired - Fee Related
- 2006-06-16 KR KR1020060054202A patent/KR100873057B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11295242A (en) * | 1998-04-10 | 1999-10-29 | Matsushita Electric Ind Co Ltd | X-ray substrate inspection equipment and visible light reflective film for x-ray |
| JP2001116925A (en) * | 1999-10-20 | 2001-04-27 | Sumitomo Chem Co Ltd | Method of inspecting optical sheet |
| JP2004101403A (en) * | 2002-09-11 | 2004-04-02 | Tokyo Seimitsu Co Ltd | Visual inspection device |
| JP2004163664A (en) * | 2002-11-13 | 2004-06-10 | Dainippon Printing Co Ltd | Method of inspecting cholesteric liquid crystal layer, inspection apparatus therefor and method of manufacturing cholesteric liquid crystal layer |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060132476A (en) | 2006-12-21 |
| KR100873057B1 (en) | 2008-12-11 |
| JP2006349576A (en) | 2006-12-28 |
| CN1880983A (en) | 2006-12-20 |
| TW200702658A (en) | 2007-01-16 |
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