JPS55117901A - Measuring method for parallel degree of plane plate surface and reverse face - Google Patents
Measuring method for parallel degree of plane plate surface and reverse faceInfo
- Publication number
- JPS55117901A JPS55117901A JP2588279A JP2588279A JPS55117901A JP S55117901 A JPS55117901 A JP S55117901A JP 2588279 A JP2588279 A JP 2588279A JP 2588279 A JP2588279 A JP 2588279A JP S55117901 A JPS55117901 A JP S55117901A
- Authority
- JP
- Japan
- Prior art keywords
- reverse face
- face
- parallel degree
- measuring method
- plate surface
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To cause reflection lights from the surface and the reverse face to interfere each other to make it possible to measure the parallel degree of the surface and the reverse face even for a plate which has such a face roughness that the laser light is scattered by the irradiation face, by performing measurement after coating a transparent thin film on the measured surface.
CONSTITUTION: A photo resistor, etc., are coated on the surface and the reverse face of a measured face, for example, glass plate 12, which is lapped with the grain of the number 2000, by a spinner and is dried, and transparent thin film 13 is coated. After that, laser light 2 is irradiated to observe interference stripes between the reflection light from the surface and the reflection light from the reverse face, thus measuring the parallel degree of the surface and the reverse face.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2588279A JPS55117901A (en) | 1979-03-06 | 1979-03-06 | Measuring method for parallel degree of plane plate surface and reverse face |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2588279A JPS55117901A (en) | 1979-03-06 | 1979-03-06 | Measuring method for parallel degree of plane plate surface and reverse face |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55117901A true JPS55117901A (en) | 1980-09-10 |
Family
ID=12178143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2588279A Pending JPS55117901A (en) | 1979-03-06 | 1979-03-06 | Measuring method for parallel degree of plane plate surface and reverse face |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55117901A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107727009A (en) * | 2017-11-06 | 2018-02-23 | 深圳精创视觉科技有限公司 | Hand-set lid glass quality detection means |
-
1979
- 1979-03-06 JP JP2588279A patent/JPS55117901A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107727009A (en) * | 2017-11-06 | 2018-02-23 | 深圳精创视觉科技有限公司 | Hand-set lid glass quality detection means |
CN107727009B (en) * | 2017-11-06 | 2023-11-24 | 深圳精创视觉科技有限公司 | Quality detection device for mobile phone cover plate glass |
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