TW200834060A - Defect inspection apparatus and method for light transmittance material - Google Patents
Defect inspection apparatus and method for light transmittance materialInfo
- Publication number
- TW200834060A TW200834060A TW096147632A TW96147632A TW200834060A TW 200834060 A TW200834060 A TW 200834060A TW 096147632 A TW096147632 A TW 096147632A TW 96147632 A TW96147632 A TW 96147632A TW 200834060 A TW200834060 A TW 200834060A
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- defect inspection
- light transmittance
- inspection apparatus
- polarizer
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
-
- 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
- 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
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Textile Engineering (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A first and a second polarizers are set above and below a running film such as a cross Nicol. By means of irradiating light from a projector and passing through the first polarizer on the film and receiving the light from the second polarizer by a light receiver, the defect of the film is inspected. A band pass filter is set between the first polarizer and the projector. The band pass filter eliminates the light from the projector with a wavelength area of 420nm or less and 700nm or more. The precision of defect inspection is improved, because the light with a needless wavelength area is not incident into the light receiver.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007007028A JP5024935B2 (en) | 2007-01-16 | 2007-01-16 | Device and method for detecting defect of light transmitting member |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200834060A true TW200834060A (en) | 2008-08-16 |
TWI480539B TWI480539B (en) | 2015-04-11 |
Family
ID=39702706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW096147632A TWI480539B (en) | 2007-01-16 | 2007-12-13 | Defect inspection apparatus and method for light transmittance material |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP5024935B2 (en) |
KR (1) | KR101366633B1 (en) |
CN (1) | CN101226158A (en) |
TW (1) | TWI480539B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011033564A (en) * | 2009-08-05 | 2011-02-17 | Sumitomo Chemical Co Ltd | Optical film inspection method |
KR101300132B1 (en) * | 2011-01-31 | 2013-08-26 | 삼성코닝정밀소재 주식회사 | Apparatus for detecting particle in flat glass and detecting method using same |
JP5399453B2 (en) * | 2011-08-31 | 2014-01-29 | 富士フイルム株式会社 | Defect inspection apparatus and method for patterned retardation film, and manufacturing method |
JP5422620B2 (en) * | 2011-08-31 | 2014-02-19 | 富士フイルム株式会社 | Defect detection apparatus and method for patterned retardation film, and manufacturing method |
EP2647949A1 (en) | 2012-04-04 | 2013-10-09 | Siemens VAI Metals Technologies GmbH | Method and device for measuring the flatness of a metal product |
CN102706898A (en) * | 2012-05-30 | 2012-10-03 | 昆山明本光电有限公司 | Texture observer and application method thereof |
JP6156820B2 (en) * | 2013-08-22 | 2017-07-05 | 住友化学株式会社 | Defect inspection apparatus, optical member manufacturing system, and optical display device production system |
DE102015003019A1 (en) | 2015-03-06 | 2016-09-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and device for the optical detection of movement in a biological sample with spatial extent |
CN107024482B (en) * | 2015-12-15 | 2020-11-20 | 住友化学株式会社 | Defect imaging device and method, film manufacturing device and method, and defect inspection method |
JP6924002B2 (en) * | 2016-07-22 | 2021-08-25 | 日東電工株式会社 | Inspection equipment and inspection method |
US10241036B2 (en) * | 2017-05-08 | 2019-03-26 | Siemens Energy, Inc. | Laser thermography |
CN116858141B (en) * | 2023-09-02 | 2023-12-05 | 江苏迪牌新材料有限公司 | Flatness detection device for PVC film |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01263540A (en) * | 1988-04-15 | 1989-10-20 | Hitachi Ltd | Pattern detecting apparatus |
JPH07270325A (en) * | 1994-03-30 | 1995-10-20 | Ricoh Co Ltd | Defect inspector |
JP2003098102A (en) * | 2001-09-25 | 2003-04-03 | Konica Corp | Method and apparatus for inspecting surface |
JP4033443B2 (en) * | 2002-01-22 | 2008-01-16 | 日本化薬株式会社 | Dye-type polarizing film and polarizing plate |
JP4396160B2 (en) * | 2003-07-31 | 2010-01-13 | 住友化学株式会社 | Foreign film inspection method for transparent film |
WO2005015275A1 (en) * | 2003-08-07 | 2005-02-17 | Nippon Kayaku Kabushiki Kaisha | Dye-containing polarizer |
TW200519373A (en) * | 2003-10-27 | 2005-06-16 | Nikon Corp | Surface inspection device and method |
JP2005274156A (en) * | 2004-03-22 | 2005-10-06 | Olympus Corp | Flaw inspection device |
JP2006030962A (en) * | 2004-05-14 | 2006-02-02 | Fuji Photo Film Co Ltd | Optical cellulose acylate film, polarizing plate and liquid crystal display device |
JP2006078426A (en) * | 2004-09-13 | 2006-03-23 | Konica Minolta Holdings Inc | Apparatus and method for inspecting defect |
KR100639371B1 (en) * | 2004-10-07 | 2006-10-26 | 엘지전자 주식회사 | SMS service method in the multimedia playing process in the mobile communication terminal |
JP4613090B2 (en) * | 2005-04-21 | 2011-01-12 | 東芝三菱電機産業システム株式会社 | Inspection device |
JP4960026B2 (en) * | 2006-06-09 | 2012-06-27 | 富士フイルム株式会社 | Film defect inspection apparatus and film manufacturing method |
-
2007
- 2007-01-16 JP JP2007007028A patent/JP5024935B2/en active Active
- 2007-12-13 TW TW096147632A patent/TWI480539B/en not_active IP Right Cessation
-
2008
- 2008-01-08 KR KR1020080001991A patent/KR101366633B1/en active IP Right Grant
- 2008-01-16 CN CNA2008100040516A patent/CN101226158A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN101226158A (en) | 2008-07-23 |
TWI480539B (en) | 2015-04-11 |
KR101366633B1 (en) | 2014-02-24 |
JP2008175565A (en) | 2008-07-31 |
JP5024935B2 (en) | 2012-09-12 |
KR20080067573A (en) | 2008-07-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |