US2160434A - Television apparatus - Google Patents

Television apparatus Download PDF

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Publication number
US2160434A
US2160434A US91403A US9140336A US2160434A US 2160434 A US2160434 A US 2160434A US 91403 A US91403 A US 91403A US 9140336 A US9140336 A US 9140336A US 2160434 A US2160434 A US 2160434A
Authority
US
United States
Prior art keywords
envelope
screen
tube
glass
view
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
Application number
US91403A
Other languages
English (en)
Inventor
Harris Huston
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.)
Corning Glass Works
Original Assignee
Corning Glass Works
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
Priority to BE421879D priority Critical patent/BE421879A/xx
Application filed by Corning Glass Works filed Critical Corning Glass Works
Priority to US91403A priority patent/US2160434A/en
Priority to GB25246/36A priority patent/GB470885A/en
Priority to FR822251D priority patent/FR822251A/fr
Application granted granted Critical
Publication of US2160434A publication Critical patent/US2160434A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/861—Vessels or containers characterised by the form or the structure thereof

Definitions

  • Mly invention relates to improvements in television apparatus and the like, and particularly to the improvement of the optical fidelity of such apparatus.
  • envelopes for cathode ray tubes used in television receivers to display images translated from picture signals received, by blowing the envelopes to the desired contour.
  • shape of the envelope usually is that of a funnel, closed at the large end to form a screen upon which the images are displayed; and having the electrical elements constituting an electron gun for developing a cathode ray and for directing the same at the screen to produce images thereon, mounted in the stem.
  • the iconoscope tube which serves as a means for viewing scenes for television transmission and similar applications, and which is composed of an envelope containing an electron gun focused on a photosensitive signal plate Within the tube to develop picture signals in accordance with reflections received on the photosensitive signal plate of objects or scenes within View of a window comprising a part of the tube envelope structure.
  • An object of the present invention is to transmit and reproduce pictures and views with fidelity.
  • my invention embodies a cathode ray tube envelope having a screen portion on which picture signals will be developed with perfect fidelity; also, an iconoscope tube envelope having a window therein through which light, reflected from objects or scenes within view of the window, will pass without distortion.
  • Fig. 1 is a side view of a cathode ray tube having an envelope embodying this invention
  • Fig. 2 is a side view, in section, of the blown and pressed parts of the envelope shown in Fig. 10 1 before they are sealed together;
  • Fig. 3 is a side view of an iconoscope tube having an envelope embodying this invention.
  • Fig. 4 is a view, similar to Fig. 2', of the parts of an iconoscope tube envelope embodying this invention.
  • Fig. 5 is an end view of the intermediate part of the envelope shown in Fig. 4.
  • the envelope is com.- posed of a blown glass body portion [0, the large end of which is carefully ground and sanded to free it of any metallic inclusions, and then welded or fused to a similarly prepared surface of a saucer-like pressed glass part II having a concaVo-convex screen or rounded area l2 in which the mass of glass is of uniform thickness and curvature throughout.
  • the screen may be of plano-parallel configuration, but the concavo-convex configuration gives the exposed surface of the screen greater resistance to frac- 30 ture, and also corrects distortion caused by the changing curvature of the field with distance away from the cathode when a plano-parallel screen is used.
  • An electron gun I3 of any known form is sealed in the neck of the envelope and is directed toward the screen area l2 in the usual 35 manner.
  • the iconoscope tube envelope comprises a main body in the form of a cylinder l6, the one end of which is ground, sanded and then welded or fused to a similarly prepared surface of a saucer-like part of pressed glass or the like having a plane-parallel screen or window area l8 within its wall areas l9 and 20.
  • the lower wall area 20 has a protuberance 2
  • a glass envelope which includes two separately fabricated hollow parts one of which is adapted to transmit light generated within the 5 envelope, said parts being arranged in juxtaposed relation and fused together at their adjoining edges and the light transmitting part being so shaped that the larger portion thereof is in a plane remotely disposed with respect to the 10 line of juncture of the respective parts.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
US91403A 1936-07-18 1936-07-18 Television apparatus Expired - Lifetime US2160434A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE421879D BE421879A (xx) 1936-07-18
US91403A US2160434A (en) 1936-07-18 1936-07-18 Television apparatus
GB25246/36A GB470885A (en) 1936-07-18 1936-09-16 Improvements in or relating to electronic apparatus for television systems and the like
FR822251D FR822251A (fr) 1936-07-18 1937-05-26 Perfectionnements apportés aux appareils électroniques pour télévision, et dispositifs du même genre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91403A US2160434A (en) 1936-07-18 1936-07-18 Television apparatus

Publications (1)

Publication Number Publication Date
US2160434A true US2160434A (en) 1939-05-30

Family

ID=22227587

Family Applications (1)

Application Number Title Priority Date Filing Date
US91403A Expired - Lifetime US2160434A (en) 1936-07-18 1936-07-18 Television apparatus

Country Status (4)

Country Link
US (1) US2160434A (xx)
BE (1) BE421879A (xx)
FR (1) FR822251A (xx)
GB (1) GB470885A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695477A (en) * 1949-12-19 1954-11-30 Hartford Nat Bank & Trust Co Method of manufacturing cathode-ray tubes
US2697311A (en) * 1949-12-19 1954-12-21 Polan Ind Inc Method of making glass tube envelopes
DE947719C (de) * 1949-09-13 1956-08-23 Philips Nv Elektronenstrahlroehre mit einem rechteckigen, gewoelbten Glasschirm, der an einem metallenen Pyramidenstumpf angeschmolzen ist
US2785820A (en) * 1952-06-28 1957-03-19 Owens Illinois Glass Co Controlling implosions in cathode ray and other tubes
US3326621A (en) * 1961-01-19 1967-06-20 Nygorden Per Johan Berggren De Catadioptric imaging systems
US6727640B2 (en) * 2000-05-15 2004-04-27 Matsushita Electric Industrial Co., Ltd. Glass bulb for a cathode-ray tube and a cathode-ray tube device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947719C (de) * 1949-09-13 1956-08-23 Philips Nv Elektronenstrahlroehre mit einem rechteckigen, gewoelbten Glasschirm, der an einem metallenen Pyramidenstumpf angeschmolzen ist
US2695477A (en) * 1949-12-19 1954-11-30 Hartford Nat Bank & Trust Co Method of manufacturing cathode-ray tubes
US2697311A (en) * 1949-12-19 1954-12-21 Polan Ind Inc Method of making glass tube envelopes
US2785820A (en) * 1952-06-28 1957-03-19 Owens Illinois Glass Co Controlling implosions in cathode ray and other tubes
US3326621A (en) * 1961-01-19 1967-06-20 Nygorden Per Johan Berggren De Catadioptric imaging systems
US6727640B2 (en) * 2000-05-15 2004-04-27 Matsushita Electric Industrial Co., Ltd. Glass bulb for a cathode-ray tube and a cathode-ray tube device

Also Published As

Publication number Publication date
FR822251A (fr) 1937-12-24
BE421879A (xx)
GB470885A (en) 1937-08-24

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