JPS5524365A - Pitch measuring device for rectangular hole of shadow mask for color braun tube - Google Patents
Pitch measuring device for rectangular hole of shadow mask for color braun tubeInfo
- Publication number
- JPS5524365A JPS5524365A JP9728178A JP9728178A JPS5524365A JP S5524365 A JPS5524365 A JP S5524365A JP 9728178 A JP9728178 A JP 9728178A JP 9728178 A JP9728178 A JP 9728178A JP S5524365 A JPS5524365 A JP S5524365A
- Authority
- JP
- Japan
- Prior art keywords
- rectangular hole
- shadow mask
- diffracted
- measuring device
- pitch
- 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
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
PURPOSE: To shorten a length of time required for measurement as well as with the measurement correctly performed, by means of measuring the pitch of rectangular hole from a diffracted image obtained by irradiating the laser beam to the rectangular hole to be measured.
CONSTITUTION: Laser beam, oscillated from a laser tube 3, is diffracted by a fixed slit plate 4, further with this diffracted image being diffracted by a slit 13 of the shadow mask to be measured, and the intensity distribution of light is quantized by a detector 5 of diffracted image with a photoarray built in and detected. An arithmetic unit 6, by processing an operation of this output, indicates a pitch of the shadow mask rectangular hole in a digital quantity.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9728178A JPS5524365A (en) | 1978-08-11 | 1978-08-11 | Pitch measuring device for rectangular hole of shadow mask for color braun tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9728178A JPS5524365A (en) | 1978-08-11 | 1978-08-11 | Pitch measuring device for rectangular hole of shadow mask for color braun tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5524365A true JPS5524365A (en) | 1980-02-21 |
Family
ID=14188120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9728178A Pending JPS5524365A (en) | 1978-08-11 | 1978-08-11 | Pitch measuring device for rectangular hole of shadow mask for color braun tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5524365A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5918319U (en) * | 1982-07-28 | 1984-02-03 | 日本開閉器工業株式会社 | Seesaw type switch |
KR970007396A (en) * | 1995-07-21 | 1997-02-21 | 케네쓰 어베이트 | Parabolic laser exploration system and method for shadow mask |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4924489A (en) * | 1972-06-28 | 1974-03-04 |
-
1978
- 1978-08-11 JP JP9728178A patent/JPS5524365A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4924489A (en) * | 1972-06-28 | 1974-03-04 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5918319U (en) * | 1982-07-28 | 1984-02-03 | 日本開閉器工業株式会社 | Seesaw type switch |
KR970007396A (en) * | 1995-07-21 | 1997-02-21 | 케네쓰 어베이트 | Parabolic laser exploration system and method for shadow mask |
US5636029A (en) * | 1995-07-21 | 1997-06-03 | Bmc Industries, Inc. | Elliptical laser probe for shadow mask |
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