JPS56128551A - Electron gun - Google Patents

Electron gun

Info

Publication number
JPS56128551A
JPS56128551A JP3180580A JP3180580A JPS56128551A JP S56128551 A JPS56128551 A JP S56128551A JP 3180580 A JP3180580 A JP 3180580A JP 3180580 A JP3180580 A JP 3180580A JP S56128551 A JPS56128551 A JP S56128551A
Authority
JP
Japan
Prior art keywords
parts
electrode
lens
potential
electron lens
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
JP3180580A
Other languages
Japanese (ja)
Inventor
Kozo Tateishi
Jun Nishida
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3180580A priority Critical patent/JPS56128551A/en
Publication of JPS56128551A publication Critical patent/JPS56128551A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun

Abstract

PURPOSE:To obtain an electron lens of axially asymmetry, by forming protrusive and hollowed parts engageable to each other in end parts at a face-to-face position of cylindrical electrodes constituting the electron lens. CONSTITUTION:In case of using three cylindrical electrodes, protrusive parts 6, 7 and hollowed parts 8, 9 are provided in oppositely facing parts respectively between the first electrode 1 and the second electrode 2 and the second electrode 2 and the third electrode 3. Said protrusive parts 6, 7 and hollowed parts 8, 9 can from axially asymmetrical potential distribution in the vicinity of the oppositely facing parts and hole parts of the electrodes constituting an electron lens to present an axially asymmetrical electron lens havIng performance of tetrode lens. When UPF operating said electron lens, the first electrode 1 and the third electrode 3 are connected to be of the same potential, then slightly higher potential of the intermediate electrode 2 than said potential operates the lens as a diverging lens in an X-Z plane and a focusing lens in a Y-Z plane, while slightly lower potential of the intermediate electrode 2 operates the lens to display opposite quality.
JP3180580A 1980-03-12 1980-03-12 Electron gun Pending JPS56128551A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3180580A JPS56128551A (en) 1980-03-12 1980-03-12 Electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3180580A JPS56128551A (en) 1980-03-12 1980-03-12 Electron gun

Publications (1)

Publication Number Publication Date
JPS56128551A true JPS56128551A (en) 1981-10-08

Family

ID=12341297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3180580A Pending JPS56128551A (en) 1980-03-12 1980-03-12 Electron gun

Country Status (1)

Country Link
JP (1) JPS56128551A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559950A1 (en) * 1984-02-20 1985-08-23 Sony Corp CATHODE RAY TUBE
EP0173086A2 (en) * 1984-07-27 1986-03-05 Hitachi, Ltd. Electron gun for color picture tube
JPS6199249A (en) * 1984-10-18 1986-05-17 Matsushita Electronics Corp Picture tube apparatus
EP0241218A2 (en) * 1986-04-03 1987-10-14 Mitsubishi Denki Kabushiki Kaisha Cathode ray tube apparatus
JPH0246633A (en) * 1988-08-08 1990-02-16 Toshiba Corp Color picture tube device
JP2019080978A (en) * 2013-08-09 2019-05-30 ボストン サイエンティフィック サイムド，インコーポレイテッドＢｏｓｔｏｎ Ｓｃｉｅｎｔｉｆｉｃ Ｓｃｉｍｅｄ，Ｉｎｃ． Medical device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559950A1 (en) * 1984-02-20 1985-08-23 Sony Corp CATHODE RAY TUBE
EP0173086A2 (en) * 1984-07-27 1986-03-05 Hitachi, Ltd. Electron gun for color picture tube
JPS6199249A (en) * 1984-10-18 1986-05-17 Matsushita Electronics Corp Picture tube apparatus
JPH0360147B2 (en) * 1984-10-18 1991-09-12 Matsushita Electronics Corp
EP0241218A2 (en) * 1986-04-03 1987-10-14 Mitsubishi Denki Kabushiki Kaisha Cathode ray tube apparatus
US4886999A (en) * 1986-04-03 1989-12-12 Mitsubishi Denki Kabushiki Kaishi Cathode ray tube apparatus with quadrupole electrode structure
JPH0246633A (en) * 1988-08-08 1990-02-16 Toshiba Corp Color picture tube device
JP2019080978A (en) * 2013-08-09 2019-05-30 ボストン サイエンティフィック サイムド，インコーポレイテッドＢｏｓｔｏｎ Ｓｃｉｅｎｔｉｆｉｃ Ｓｃｉｍｅｄ，Ｉｎｃ． Medical device
US11801090B2 (en) 2013-08-09 2023-10-31 Boston Scientific Scimed, Inc. Expandable catheter and related methods of manufacture and use

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