JPS56166452A - Detecting method for distortion defect of transparent plate - Google Patents
Detecting method for distortion defect of transparent plateInfo
- Publication number
- JPS56166452A JPS56166452A JP7033380A JP7033380A JPS56166452A JP S56166452 A JPS56166452 A JP S56166452A JP 7033380 A JP7033380 A JP 7033380A JP 7033380 A JP7033380 A JP 7033380A JP S56166452 A JPS56166452 A JP S56166452A
- Authority
- JP
- Japan
- Prior art keywords
- light
- image
- screen
- glass
- inspected
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
PURPOSE:To make the sight-through distortion inspection automatic, by projecting the image of the light having passed through an object being inspected on a screen, and electrically processing said transmitted light image. CONSTITUTION:Glass 1 as an object to be inspected moves on conveyor rollers 2. Below the rollers 2, a reflecting mirror 3 is disposed in an inclining position, while above them, a screen 4 is disposed in an inclining position. When the glass 1 moving on the rollers 2 reaches a given position, the light beam L from a light source 5 passes through the glass 1, and the image of said transmitted light is projected on the screen 4. The incident angle phi of the light beam L is more than 30 deg., the length (a) of the light-projected part on the object 1' to be inspected is to be more than 40mm., and the opening angle phi of the light beam is to be within a range of from -15 deg. to +15 deg.. The nozzle 6 jets out air in order to clean the surface of the reflecting mirror 3 at all times. The transmitted light image on the screen 4 is converted into an electrical signal by means of an image pickup apparatus 7 and processed in an apparatus 9 which is controlled by means of a computer 8 and processes the video signal. The result is displayed on a monitor 10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7033380A JPS56166452A (en) | 1980-05-27 | 1980-05-27 | Detecting method for distortion defect of transparent plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7033380A JPS56166452A (en) | 1980-05-27 | 1980-05-27 | Detecting method for distortion defect of transparent plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56166452A true JPS56166452A (en) | 1981-12-21 |
JPS6312250B2 JPS6312250B2 (en) | 1988-03-18 |
Family
ID=13428385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7033380A Granted JPS56166452A (en) | 1980-05-27 | 1980-05-27 | Detecting method for distortion defect of transparent plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56166452A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2556097A1 (en) * | 1983-12-01 | 1985-06-07 | Nippon Sheet Glass Co Ltd | APPARATUS FOR SEARCHING FOR DISTORTIONS IN A GLASS PLATE |
JPS61162708A (en) * | 1985-01-11 | 1986-07-23 | Inax Corp | Apparatus for detecting surface flaw of member |
JPS62200206A (en) * | 1986-02-27 | 1987-09-03 | Toyo Denshi Kk | Apparatus for detecting edge of transparent matter |
JPS6381202A (en) * | 1986-09-24 | 1988-04-12 | Mazda Motor Corp | Detection of defective primer coating |
JP2020020657A (en) * | 2018-07-31 | 2020-02-06 | 株式会社リコー | Stereo camera device, stereo camera system, and moving object |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100838655B1 (en) * | 2006-10-27 | 2008-06-16 | (주)쎄미시스코 | Quality tester of glass board and method thereof |
-
1980
- 1980-05-27 JP JP7033380A patent/JPS56166452A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2556097A1 (en) * | 1983-12-01 | 1985-06-07 | Nippon Sheet Glass Co Ltd | APPARATUS FOR SEARCHING FOR DISTORTIONS IN A GLASS PLATE |
JPS61162708A (en) * | 1985-01-11 | 1986-07-23 | Inax Corp | Apparatus for detecting surface flaw of member |
JPS62200206A (en) * | 1986-02-27 | 1987-09-03 | Toyo Denshi Kk | Apparatus for detecting edge of transparent matter |
JPS6381202A (en) * | 1986-09-24 | 1988-04-12 | Mazda Motor Corp | Detection of defective primer coating |
JP2020020657A (en) * | 2018-07-31 | 2020-02-06 | 株式会社リコー | Stereo camera device, stereo camera system, and moving object |
Also Published As
Publication number | Publication date |
---|---|
JPS6312250B2 (en) | 1988-03-18 |
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