JPS554850A - Electron gun - Google Patents

Electron gun

Info

Publication number
JPS554850A
JPS554850A JP7790078A JP7790078A JPS554850A JP S554850 A JPS554850 A JP S554850A JP 7790078 A JP7790078 A JP 7790078A JP 7790078 A JP7790078 A JP 7790078A JP S554850 A JPS554850 A JP S554850A
Authority
JP
Japan
Prior art keywords
length
ranges
grid
setting
focus voltage
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.)
Granted
Application number
JP7790078A
Other languages
Japanese (ja)
Other versions
JPH029427B2 (en
Inventor
Masaya Takenobu
Osamu Baba
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7790078A priority Critical patent/JPS554850A/en
Publication of JPS554850A publication Critical patent/JPS554850A/en
Publication of JPH029427B2 publication Critical patent/JPH029427B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain pictures that have high resolution and high sharpness, by setting the dimensions of each electrode forming electron lenses within specified prescribed ranges.
CONSTITUTION: The length L5 of the fifth grid 5 is set within ranges decided in accordance with an expression I that the spherical aberration of uni-potential type electron lenses formed at the fourthWthe sixth grids 4W6 becomes smaller and can lower focus voltage Ef as much as possible. The length L6 of the sixth grid 6 can freely be set comparatively, but it is set in approximate extent that satisfies L6/D≥1 in order to prevent effect to the electric fields of lens ranges from the screen side. The length L4 of the fourth grid 4 is set so that L4≤L3<L5 be formed in Ef/Eb≤ 0.33 in response to a focus voltage ratio Ef/Eb. Thus, pictures that have high resolution and high sharpness can be obtained by setting the length of each electrode within prescribed ranges.
COPYRIGHT: (C)1980,JPO&Japio
JP7790078A 1978-06-26 1978-06-26 Electron gun Granted JPS554850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7790078A JPS554850A (en) 1978-06-26 1978-06-26 Electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7790078A JPS554850A (en) 1978-06-26 1978-06-26 Electron gun

Publications (2)

Publication Number Publication Date
JPS554850A true JPS554850A (en) 1980-01-14
JPH029427B2 JPH029427B2 (en) 1990-03-01

Family

ID=13646942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7790078A Granted JPS554850A (en) 1978-06-26 1978-06-26 Electron gun

Country Status (1)

Country Link
JP (1) JPS554850A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5577503U (en) * 1978-11-15 1980-05-28

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075360A (en) * 1973-11-05 1975-06-20
JPS5075359A (en) * 1973-11-05 1975-06-20

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075360A (en) * 1973-11-05 1975-06-20
JPS5075359A (en) * 1973-11-05 1975-06-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5577503U (en) * 1978-11-15 1980-05-28
JPS57961Y2 (en) * 1978-11-15 1982-01-08

Also Published As

Publication number Publication date
JPH029427B2 (en) 1990-03-01

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