US2099749A - Electron tube - Google Patents

Electron tube Download PDF

Info

Publication number: US2099749A
Authority: US; United States
Prior art keywords: electron; electrode; aperture; cathode ray; tube
Prior art date: 1933-05-30
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

Application number

US673572A

Other languages

English (en)

Inventor

Richard T Orth

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.)

RCA Corp

Original Assignee

RCA 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.)

1933-05-30

Filing date

1933-05-30

Publication date

1937-11-23

1933-05-30 Application filed by RCA Corp filed Critical RCA Corp

1933-05-30 Priority to US673572A priority Critical patent/US2099749A/en

1934-05-09 Priority to FR773088D priority patent/FR773088A/fr

1934-05-30 Priority to GB33409/35A priority patent/GB440390A/en

1934-05-30 Priority to GB16175/34A priority patent/GB439492A/en

1937-11-23 Application granted granted Critical

1937-11-23 Publication of US2099749A publication Critical patent/US2099749A/en

1954-11-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

230000000694 effects Effects 0.000 description 13
238000010894 electron beam technology Methods 0.000 description 9
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238000012986 modification Methods 0.000 description 3
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230000005686 electrostatic field Effects 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
239000011810 insulating material Substances 0.000 description 2
238000000034 method Methods 0.000 description 2
238000003466 welding Methods 0.000 description 2
238000004804 winding Methods 0.000 description 2
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239000000463 material Substances 0.000 description 1
229910052751 metal Inorganic materials 0.000 description 1
239000002184 metal Substances 0.000 description 1
229910052750 molybdenum Inorganic materials 0.000 description 1
239000011733 molybdenum Substances 0.000 description 1
230000005693 optoelectronics Effects 0.000 description 1
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ACXGJHCPFCFILV-UHFFFAOYSA-M sodium;2-(4-chloro-2-methylphenoxy)acetate;3,6-dichloro-2-methoxybenzoic acid Chemical compound [Na+].COC1=C(Cl)C=CC(Cl)=C1C(O)=O.CC1=CC(Cl)=CC=C1OCC([O-])=O ACXGJHCPFCFILV-UHFFFAOYSA-M 0.000 description 1

Images

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
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation

Definitions

the annular face 45 of the cathode sleeve 31 is coated with a thermionically active substance prior to the assembly operation so that upon heating the cathode member by the application of current to the terminals 35 and 36 of the filament 34 electrons are emitted from the activated surface of the annular face 45 to form an electron beam 46.
This electron beam 46 is suitably controlled, limited and focused by the electrodes 49, 411, 48 and 33.
the electrode member 40 tends to spread the cathode ray beam 46 with any increase in negative potential.
the anode element 33 has a fixed aperture 3
the electrode 33 will collect any of the electrons which may have been spread out to cover a larger area than that of the aperture 3
modulation of the cathode ray beam may be accomplished without changing its diameter or boundaries.
the luminescent spot produced upon the fluorescent screen structiu'e 4 will then be of uniform size, that is, the boundaries will at all times remain constant, regardless of the modulating voltages impressed thereon.

Landscapes

Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Storage Of Web-Like Or Filamentary Materials (AREA)
Moulding By Coating Moulds (AREA)

US673572A 1933-05-30 1933-05-30 Electron tube Expired - Lifetime US2099749A (en)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
US673572A US2099749A (en)	1933-05-30	1933-05-30	Electron tube
FR773088D FR773088A (fr)	1933-05-30	1934-05-09	Tubes électroniques
GB33409/35A GB440390A (en)	1933-05-30	1934-05-30	Improvements in or relating to cathode ray apparatus
GB16175/34A GB439492A (en)	1933-05-30	1934-05-30	Improvements in or relating to cathode ray apparatus

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US673572A US2099749A (en)	1933-05-30	1933-05-30	Electron tube

Publications (1)

Publication Number	Publication Date
US2099749A true US2099749A (en)	1937-11-23

Family

ID=24703192

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US673572A Expired - Lifetime US2099749A (en)	1933-05-30	1933-05-30	Electron tube

Country Status (3)

Country	Link
US (1)	US2099749A (fr)
FR (1)	FR773088A (fr)
GB (2)	GB439492A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2583500A (en) *	1948-11-25	1952-01-22	Cathodeon Ltd	Cathode-ray tube
US2617060A (en) *	1950-05-02	1952-11-04	Hartford Nat Bank & Trust Co	Cathode-ray tube
US2690517A (en) *	1952-09-30	1954-09-28	Rca Corp	Plural beam electron gun
US2986668A (en) *	1957-12-23	1961-05-30	Gen Dynamics Corp	Cathode ray tube optical system
US3163794A (en) *	1960-06-20	1964-12-29	Philco Corp	Deflection yoke with separable portions for crt with constricted neck
US4207490A (en) *	1977-04-15	1980-06-10	U.S. Philips Corporation	Shadow mask having apertures divided into symmetrical halves by isolated conductors

1933
- 1933-05-30 US US673572A patent/US2099749A/en not_active Expired - Lifetime
1934
- 1934-05-09 FR FR773088D patent/FR773088A/fr not_active Expired
- 1934-05-30 GB GB16175/34A patent/GB439492A/en not_active Expired
- 1934-05-30 GB GB33409/35A patent/GB440390A/en not_active Expired

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2583500A (en) *	1948-11-25	1952-01-22	Cathodeon Ltd	Cathode-ray tube
US2617060A (en) *	1950-05-02	1952-11-04	Hartford Nat Bank & Trust Co	Cathode-ray tube
US2690517A (en) *	1952-09-30	1954-09-28	Rca Corp	Plural beam electron gun
US2986668A (en) *	1957-12-23	1961-05-30	Gen Dynamics Corp	Cathode ray tube optical system
US3163794A (en) *	1960-06-20	1964-12-29	Philco Corp	Deflection yoke with separable portions for crt with constricted neck
US4207490A (en) *	1977-04-15	1980-06-10	U.S. Philips Corporation	Shadow mask having apertures divided into symmetrical halves by isolated conductors

Also Published As

Publication number	Publication date
GB439492A (en)	1935-12-02
GB440390A (en)	1935-12-30
FR773088A (fr)	1934-11-10

Publication	Publication Date	Title
US2211613A (en)	1940-08-13	Cathode ray tube
US2569872A (en)	1951-10-02	Electron discharge tube
US2457175A (en)	1948-12-28	Projection cathode-ray tube
US2138928A (en)	1938-12-06	Electron discharge device
US2111231A (en)	1938-03-15	Recording device
US2540621A (en)	1951-02-06	Electron gun structure
US2852716A (en)	1958-09-16	Cathode ray tube and electron gun therefor
US2099749A (en)	1937-11-23	Electron tube
US2139678A (en)	1938-12-13	Electron discharge device
US2185590A (en)	1940-01-02	Cathode ray tube
US2223908A (en)	1940-12-03	Cathode ray tube
US3213311A (en)	1965-10-19	Electron discharge device
US2341764A (en)	1944-02-15	Cathode ray tube system
US3011090A (en)	1961-11-28	Plural beam tube
US2877369A (en)	1959-03-10	Electron beam tube
US2189583A (en)	1940-02-06	Cathode ray device
US2686884A (en)	1954-08-17	Space charge controlled X-ray tube
US2176199A (en)	1939-10-17	Electron-discharge tube
US2202631A (en)	1940-05-28	Cathode ray tube
US4506191A (en)	1985-03-19	Light source cathode ray tube
US2104566A (en)	1938-01-04	Electron tube
US2269115A (en)	1942-01-06	Cathode-ray tube
US2592242A (en)	1952-04-08	Electron gun and mounting therefor
US3363961A (en)	1968-01-16	Cathode arrangement of an electron microscope for reducing the occurrence of virtualcathodes
US3032674A (en)	1962-05-01	Electron gun structure for cathode ray tube

US2099749A - Electron tube - Google Patents

Info

Links

Images

Classifications

Definitions

Landscapes

Priority Applications (4)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24703192

Family Applications (1)

Country Status (3)

Cited By (6)

Cited By (6)

Also Published As

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