JPS5537708A - Color picture crt inspection device - Google Patents
Color picture crt inspection deviceInfo
- Publication number
- JPS5537708A JPS5537708A JP10913378A JP10913378A JPS5537708A JP S5537708 A JPS5537708 A JP S5537708A JP 10913378 A JP10913378 A JP 10913378A JP 10913378 A JP10913378 A JP 10913378A JP S5537708 A JPS5537708 A JP S5537708A
- Authority
- JP
- Japan
- Prior art keywords
- absorbing layer
- light absorbing
- light
- panel
- crt
- 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
Abstract
PURPOSE: To automatically and precisely measure the pattern width and improve the productivity of the CRT, by magnifying the pattern width of a light absorbing layer through an optical system, then detecting it by a light receving device.
CONSTITUTION: A color picture CRT panel 11 formed with a light absorbing layer is illuminated over the light absorbing layer by the light from a light source 14, and the transmitted or reflected light from the panel is concentrated and the light absorbing layer pattern is magnified by a lens system 15. Then, the magnified pattern is detected by a detector 16, and the spacing between the lens system 15 and the inner wall surface of the panel 11 is measured for adjusting the spacing between the panel 11 and the lens system 15 by a gap adjusting device 19 to make said spacing constant. Then, the pattern width of the light absorbing layer is calculated from the output of the detector 16 by an arithmetic circuit 22. Thus, the pattern width of the light absorbing layer can be measured precisely, and the performance and the productivity of the CRT can be improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10913378A JPS5537708A (en) | 1978-09-07 | 1978-09-07 | Color picture crt inspection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10913378A JPS5537708A (en) | 1978-09-07 | 1978-09-07 | Color picture crt inspection device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5537708A true JPS5537708A (en) | 1980-03-15 |
Family
ID=14502406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10913378A Pending JPS5537708A (en) | 1978-09-07 | 1978-09-07 | Color picture crt inspection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5537708A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5483763A (en) * | 1977-12-16 | 1979-07-04 | Toshiba Corp | Measuring instrument for black stripe size of color cathode-ray tube |
-
1978
- 1978-09-07 JP JP10913378A patent/JPS5537708A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5483763A (en) * | 1977-12-16 | 1979-07-04 | Toshiba Corp | Measuring instrument for black stripe size of color cathode-ray tube |
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