US2330604A - Cathode ray tube - Google Patents

Cathode ray tube Download PDF

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Publication number
US2330604A
US2330604A US414411A US41441141A US2330604A US 2330604 A US2330604 A US 2330604A US 414411 A US414411 A US 414411A US 41441141 A US41441141 A US 41441141A US 2330604 A US2330604 A US 2330604A
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Prior art keywords
cathode ray
ray tube
end wall
messner
tube
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Expired - Lifetime
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US414411A
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Messner Maximilian
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    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/34—Luminescent screens provided with permanent marks or references

Definitions

  • Cathode ray tubes which are provided with scales or coordinate systems or the like in order to serve as a measuring equipment.
  • the scales or coordinate systems are arranged in front of the tube or painted on the bulb thereof.
  • Fig. 1 is a sectional view showing one embodiment of the invention
  • 1ig. 2 is a plan View of the .arrangement represented in Fig. 1.
  • the bottom 2 is surrounded with an annularl casing 4 in which vglow lamps 5 are arranged to illuminate the bottom 2 by rays entering itlaterally, whereby the drawing 1, 8 or any other representation will be distinctly visible, the casing 4 preventing the lamps 5 from shining in other directions.
  • vglow lamps 5 are arranged to illuminate the bottom 2 by rays entering itlaterally, whereby the drawing 1, 8 or any other representation will be distinctly visible, the casing 4 preventing the lamps 5 from shining in other directions.
  • the light enteringthe bottom 2 is given a colour diiferent from the colour of the light emitted by screen 3. This expedient will add to the visibilityof the drawing in the bottom 2.
  • a cathode ray tube having a translucent end wall, a scale on the inner side of said wall, a fluorescent screen at said end wall, and illuminating means to illuminate said end wall exclusively in a direction laterally thereof.
  • a cathode ray tube according to claim 1 in which a casing prevents rays from said illuminating means from reaching said end wall from other than said lateral direction.

Description

sept. 2s, 1943. M. MESSNER Y 2,330,604
CATHODE RAY -TUBE Filed Oct. 10, 1941 Patented Sept. 28, 1943 cATHoDE RAY TUBE Maximilian Messner, Berlin, Germany; vested in the Alien Property Custodian Application October 10, 1941, Serial No. 414,411
In Germany April 26, 1940 (Cl. Z50-164) 2 Claims.
Cathode ray tubes are known which are provided with scales or coordinate systems or the like in order to serve as a measuring equipment. In prior devices the scales or coordinate systems are arranged in front of the tube or painted on the bulb thereof. These arrangements are defective inasmuch as parallactical errors in observation may arise, especially if the glass of which the bulb consists is of a certain thickness.
The invention has for its object to overcome this drawback and consists in certain features of novelty which will appear from the following description and the accompanying drawing,A in which Fig. 1 is a sectional view showing one embodiment of the invention,1ig. 2 is a plan View of the .arrangement represented in Fig. 1.
The bottom 2 is surrounded with an annularl casing 4 in which vglow lamps 5 are arranged to illuminate the bottom 2 by rays entering itlaterally, whereby the drawing 1, 8 or any other representation will be distinctly visible, the casing 4 preventing the lamps 5 from shining in other directions. Y
Preferably, the light enteringthe bottom 2 is given a colour diiferent from the colour of the light emitted by screen 3. This expedient will add to the visibilityof the drawing in the bottom 2. Y
What is claimed is:
1. A cathode ray tube having a translucent end wall, a scale on the inner side of said wall, a fluorescent screen at said end wall, and illuminating means to illuminate said end wall exclusively in a direction laterally thereof.
2. A cathode ray tube according to claim 1 in which a casing prevents rays from said illuminating means from reaching said end wall from other than said lateral direction.
MAXIMIHAN MEssNER.
US414411A 1940-04-26 1941-10-10 Cathode ray tube Expired - Lifetime US2330604A (en)

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DE2330604X 1940-04-26

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US2330604A true US2330604A (en) 1943-09-28

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428818A (en) * 1944-11-20 1947-10-14 Simons Harry Davis Photographic apparatus
US2446674A (en) * 1944-02-18 1948-08-10 Bell Telephone Labor Inc Cathode-ray device mounting
US2465354A (en) * 1946-03-16 1949-03-29 Standard Telephones Cables Ltd Oscillograph
US2487817A (en) * 1945-06-07 1949-11-15 Lubin William Method for producing coordinate screens for cathode-ray oscilloscopes
US2494992A (en) * 1943-04-02 1950-01-17 Westinghouse Electric Corp Cathode-ray tube
US2605434A (en) * 1949-12-08 1952-07-29 John H Homrighous Single beam three color cathoderay tube
US2615087A (en) * 1944-04-17 1952-10-21 Rines Robert Harvey Color television system
US2655836A (en) * 1945-12-10 1953-10-20 Chalmers W Sherwin Reflection plotting device
US2657133A (en) * 1948-09-10 1953-10-27 Weingarten Joseph Electron tube marking
US2665419A (en) * 1952-01-23 1954-01-05 Millard E Van Orden Television receiver
US2669708A (en) * 1949-04-28 1954-02-16 Du Mont Allen B Lab Inc Adjacent area illuminator for cathode-ray tubes
US2717995A (en) * 1951-08-23 1955-09-13 Raytheon Mfg Co Reflection type indicating device
US2721900A (en) * 1950-06-29 1955-10-25 Bell Telephone Labor Inc Non-linear encoded transmission
US2854659A (en) * 1952-12-13 1958-09-30 Du Mont Allen B Lab Inc Plotting device
US2954427A (en) * 1953-05-12 1960-09-27 Robert D Covely Visual display system
US3207936A (en) * 1961-08-21 1965-09-21 Tektronix Inc Electron beam display device
US3268659A (en) * 1963-06-13 1966-08-23 Tektronix Inc Apparatus for edge lighting internal graticule of cathode ray tube
US3274421A (en) * 1961-12-26 1966-09-20 Sylvania Electric Prod Read-out device having bonding material between a face panel and a cover panel
US3281618A (en) * 1963-11-01 1966-10-25 Tektronix Inc Graticule lighting structure

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494992A (en) * 1943-04-02 1950-01-17 Westinghouse Electric Corp Cathode-ray tube
US2446674A (en) * 1944-02-18 1948-08-10 Bell Telephone Labor Inc Cathode-ray device mounting
US2615087A (en) * 1944-04-17 1952-10-21 Rines Robert Harvey Color television system
US2428818A (en) * 1944-11-20 1947-10-14 Simons Harry Davis Photographic apparatus
US2487817A (en) * 1945-06-07 1949-11-15 Lubin William Method for producing coordinate screens for cathode-ray oscilloscopes
US2655836A (en) * 1945-12-10 1953-10-20 Chalmers W Sherwin Reflection plotting device
US2465354A (en) * 1946-03-16 1949-03-29 Standard Telephones Cables Ltd Oscillograph
US2657133A (en) * 1948-09-10 1953-10-27 Weingarten Joseph Electron tube marking
US2669708A (en) * 1949-04-28 1954-02-16 Du Mont Allen B Lab Inc Adjacent area illuminator for cathode-ray tubes
US2605434A (en) * 1949-12-08 1952-07-29 John H Homrighous Single beam three color cathoderay tube
US2721900A (en) * 1950-06-29 1955-10-25 Bell Telephone Labor Inc Non-linear encoded transmission
US2717995A (en) * 1951-08-23 1955-09-13 Raytheon Mfg Co Reflection type indicating device
US2665419A (en) * 1952-01-23 1954-01-05 Millard E Van Orden Television receiver
US2854659A (en) * 1952-12-13 1958-09-30 Du Mont Allen B Lab Inc Plotting device
US2954427A (en) * 1953-05-12 1960-09-27 Robert D Covely Visual display system
US3207936A (en) * 1961-08-21 1965-09-21 Tektronix Inc Electron beam display device
US3274421A (en) * 1961-12-26 1966-09-20 Sylvania Electric Prod Read-out device having bonding material between a face panel and a cover panel
US3268659A (en) * 1963-06-13 1966-08-23 Tektronix Inc Apparatus for edge lighting internal graticule of cathode ray tube
US3281618A (en) * 1963-11-01 1966-10-25 Tektronix Inc Graticule lighting structure

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