US3610992A - Cathode-ray tube having end electrodes of three electrodes connected by helical coil coaxial with tube axis - Google Patents

Cathode-ray tube having end electrodes of three electrodes connected by helical coil coaxial with tube axis Download PDF

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Publication number
US3610992A
US3610992A US846533A US3610992DA US3610992A US 3610992 A US3610992 A US 3610992A US 846533 A US846533 A US 846533A US 3610992D A US3610992D A US 3610992DA US 3610992 A US3610992 A US 3610992A
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United States
Prior art keywords
tube
electrodes
electrode
beams
electrode means
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.)
Expired - Lifetime
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US846533A
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English (en)
Inventor
Senri Miyaoka
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.)
Sony Corp
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Sony Corp
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • 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
    • 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
    • H01J29/48—Electron guns
    • H01J29/51—Arrangements for controlling convergence of a plurality of beams by means of electric field only

Definitions

  • This invention generally relates to cathode-ray tubesand is particularly directed to improvements in the electrostatic lens of such tubes by which the electron beam or beams are focused on the electron-receiving screen of the tube.
  • the above-mentioned spherical aberrations are substantially diminished by providing an auxiliary electrode within the field of electrostatic lens 16a to reduce the angles of the line p (FIG. 3C) of equal potential with'respect to the tube axis x-x and to decrease the potential gradient along such axis, as indicated at P on FIG. 3A, whereby to make the electrostatic lens equivalent to an optical lens L (FIG. 3A) of relatively large diameter and having surfaces with large radii of curvature.
  • FIG. 5 will show the application of the invention to a single-gun, plural-beam cathode-ray tube of the type disclosed in detail in U.S. Pat. No. 3,448,316.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
US846533A 1968-12-19 1969-07-31 Cathode-ray tube having end electrodes of three electrodes connected by helical coil coaxial with tube axis Expired - Lifetime US3610992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9358968 1968-12-19

Publications (1)

Publication Number Publication Date
US3610992A true US3610992A (en) 1971-10-05

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ID=14086463

Family Applications (1)

Application Number Title Priority Date Filing Date
US846533A Expired - Lifetime US3610992A (en) 1968-12-19 1969-07-31 Cathode-ray tube having end electrodes of three electrodes connected by helical coil coaxial with tube axis

Country Status (5)

Country Link
US (1) US3610992A (nl)
DE (1) DE1963810A1 (nl)
FR (1) FR2026595A1 (nl)
GB (1) GB1246198A (nl)
NL (1) NL166575C (nl)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211953A (en) * 1978-03-20 1980-07-08 Rybalko Sergei A Electron beam device with variable beam energy
US4366419A (en) * 1976-07-13 1982-12-28 U.S. Philips Corporation Astigmatic electron lens for a cathode-ray tube
US6696780B1 (en) * 1998-12-21 2004-02-24 Matsushita Electric Industrial Co., Ltd. Electron gun comprising a tubular electrode having a coiled portion formed therein

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185590A (en) * 1937-06-18 1940-01-02 Rca Corp Cathode ray tube
US2567874A (en) * 1948-08-28 1951-09-11 Cage Projects Inc Cathode-ray tube
US2802135A (en) * 1952-08-22 1957-08-06 Rca Corp Traveling wave electron tube
US3176181A (en) * 1959-11-25 1965-03-30 Philips Corp Apertured coaxial tube quadripole lens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185590A (en) * 1937-06-18 1940-01-02 Rca Corp Cathode ray tube
US2567874A (en) * 1948-08-28 1951-09-11 Cage Projects Inc Cathode-ray tube
US2802135A (en) * 1952-08-22 1957-08-06 Rca Corp Traveling wave electron tube
US3176181A (en) * 1959-11-25 1965-03-30 Philips Corp Apertured coaxial tube quadripole lens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366419A (en) * 1976-07-13 1982-12-28 U.S. Philips Corporation Astigmatic electron lens for a cathode-ray tube
US4211953A (en) * 1978-03-20 1980-07-08 Rybalko Sergei A Electron beam device with variable beam energy
US6696780B1 (en) * 1998-12-21 2004-02-24 Matsushita Electric Industrial Co., Ltd. Electron gun comprising a tubular electrode having a coiled portion formed therein

Also Published As

Publication number Publication date
FR2026595A1 (nl) 1970-09-18
DE1963810A1 (de) 1970-07-02
NL166575B (nl) 1981-03-16
GB1246198A (en) 1971-09-15
NL6919120A (nl) 1970-06-23
NL166575C (nl) 1981-08-17

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