JPS56110040A - Light-projecting device for inspection of surface of body - Google Patents
Light-projecting device for inspection of surface of bodyInfo
- Publication number
- JPS56110040A JPS56110040A JP1289580A JP1289580A JPS56110040A JP S56110040 A JPS56110040 A JP S56110040A JP 1289580 A JP1289580 A JP 1289580A JP 1289580 A JP1289580 A JP 1289580A JP S56110040 A JPS56110040 A JP S56110040A
- Authority
- JP
- Japan
- Prior art keywords
- convex lens
- reflecting mirror
- ray
- image
- defects
- 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.)
- Pending
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
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8901—Optical details; Scanning details
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- 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)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
PURPOSE:To detect accurately defects such as cracks and scratches on the surface of a body by combination of at least two optical elements having condensing property with a reflecting mirror arranged in the middle of these elements. CONSTITUTION:The reflecting mirror 3 is placed at a prescribed position in relation to the 2nd convex lens 2 and one to one image thereof is formed at a point 6 apart therefrom at the same distance on the opposite side. And, parallel incident rays 7 in the 1st convex lens 1 are converged at the focus 5 of the 1st convex lens 1 and the diameter of the rays becomes minimum. The ray reflected by the reflecting mirror 3 is refrected by the 2nd convex lens 2 and forms an image of beam waist at a point 8. This optical system being employed for the light-projecting device 10, normal reflected ray 12 and a irregularly reflected ray 14 are detected by detectors 11, 13 and 13' and the ratio of the luminous energy of normal reflection to that of irregular reflection is found by an operation device 15, whereby the presence and absence of defects on the surface of a body A to be inspected are discriminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1289580A JPS56110040A (en) | 1980-02-04 | 1980-02-04 | Light-projecting device for inspection of surface of body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1289580A JPS56110040A (en) | 1980-02-04 | 1980-02-04 | Light-projecting device for inspection of surface of body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56110040A true JPS56110040A (en) | 1981-09-01 |
Family
ID=11818120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1289580A Pending JPS56110040A (en) | 1980-02-04 | 1980-02-04 | Light-projecting device for inspection of surface of body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56110040A (en) |
-
1980
- 1980-02-04 JP JP1289580A patent/JPS56110040A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3814946A (en) | Method of detecting defects in transparent and semitransparent bodies | |
| GB2126712A (en) | Surface flaw inspection apparatus for a convex body | |
| NZ228526A (en) | Measuring curvature of transparent tube by reflection/refraction of incident light | |
| ES8500445A1 (en) | Optical detection of radial reflective defects | |
| US2429331A (en) | Photoelectric apparatus for inspection of paper strips | |
| DE3270640D1 (en) | Off-axis light beam defect detector | |
| JPS54128682A (en) | Automatic detector for foreign matters | |
| US4038554A (en) | Detection of flaws in a moving web of transparent material | |
| JPS56110040A (en) | Light-projecting device for inspection of surface of body | |
| JPS5686340A (en) | Automatic detector for foreign matter | |
| JPH03115844A (en) | Detection of surface defect | |
| JPS57186106A (en) | Inspection device for surface | |
| JPS54124780A (en) | Surface inspection apparatus | |
| JPS57178134A (en) | Specular surface defect observing device | |
| JPS57135343A (en) | Surface defect inspecting device | |
| JPS63208747A (en) | Optical inspecting device | |
| JPH045556A (en) | Method and device for flaw inspection of surface of sphere | |
| JPS54156594A (en) | Seam detector of bottles | |
| CA2062447A1 (en) | Reflective Grain Defect Scanning | |
| JPS6484119A (en) | Object state detector | |
| JPS5648546A (en) | Crack detector | |
| JPS57182604A (en) | Interference measuring device | |
| JPS62280643A (en) | Defect defecting method for planar body | |
| JPS5340584A (en) | Bottle inspector by elliptically focusing system | |
| JPS61186806A (en) | Fault detecting device for transparent body |