JPS5537708A - Color picture crt inspection device - Google Patents

Color picture crt inspection device

Info

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
Application number
JP10913378A
Other languages
Japanese (ja)
Inventor
Masakazu Hayashi
Nobushi Suzuki
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 JP10913378A priority Critical patent/JPS5537708A/en
Publication of JPS5537708A publication Critical patent/JPS5537708A/en
Pending legal-status Critical Current

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
JP10913378A 1978-09-07 1978-09-07 Color picture crt inspection device Pending JPS5537708A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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