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 tube

Info

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
Application number
JP9728178A
Other languages
Japanese (ja)
Inventor
Kazunari Hirayama
Shigenobu Miyazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9728178A priority Critical patent/JPS5524365A/en
Publication of JPS5524365A publication Critical patent/JPS5524365A/en
Pending legal-status Critical Current

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
JP9728178A 1978-08-11 1978-08-11 Pitch measuring device for rectangular hole of shadow mask for color braun tube Pending JPS5524365A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4924489A (en) * 1972-06-28 1974-03-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4924489A (en) * 1972-06-28 1974-03-04

Cited By (3)

* Cited by examiner, † Cited by third party
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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