JPS5231760A - Method of detecting decreased thickness of glass bulbs for braun tubes - Google Patents
Method of detecting decreased thickness of glass bulbs for braun tubesInfo
- Publication number
- JPS5231760A JPS5231760A JP10694175A JP10694175A JPS5231760A JP S5231760 A JPS5231760 A JP S5231760A JP 10694175 A JP10694175 A JP 10694175A JP 10694175 A JP10694175 A JP 10694175A JP S5231760 A JPS5231760 A JP S5231760A
- Authority
- JP
- Japan
- Prior art keywords
- decreased thickness
- glass bulbs
- detecting decreased
- braun tubes
- bulbs
- 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 Instruments Using Mechanical Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
PURPOSE: To put special marks such as concave and convex corresponding to allowable thickness reduction protions beforehand on the surface of glas bulbs and detect the changes of these marks thereby easily assessing the thickness reduction by a simple method.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10694175A JPS5231760A (en) | 1975-09-05 | 1975-09-05 | Method of detecting decreased thickness of glass bulbs for braun tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10694175A JPS5231760A (en) | 1975-09-05 | 1975-09-05 | Method of detecting decreased thickness of glass bulbs for braun tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5231760A true JPS5231760A (en) | 1977-03-10 |
Family
ID=14446396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10694175A Pending JPS5231760A (en) | 1975-09-05 | 1975-09-05 | Method of detecting decreased thickness of glass bulbs for braun tubes |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5231760A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62131451A (en) * | 1985-12-04 | 1987-06-13 | Hitachi Ltd | Fully automatic whole-number inspection system for reinforced cathode-ray tube |
-
1975
- 1975-09-05 JP JP10694175A patent/JPS5231760A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62131451A (en) * | 1985-12-04 | 1987-06-13 | Hitachi Ltd | Fully automatic whole-number inspection system for reinforced cathode-ray tube |
US4850921A (en) * | 1985-12-04 | 1989-07-25 | Hitachi, Ltd. | Full automatic total inspection system for implosion-protected cathode-ray tube |
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