US2544690A - Color television - Google Patents

Color television Download PDF

Info

Publication number
US2544690A
US2544690A US718364A US71836446A US2544690A US 2544690 A US2544690 A US 2544690A US 718364 A US718364 A US 718364A US 71836446 A US71836446 A US 71836446A US 2544690 A US2544690 A US 2544690A
Authority
US
United States
Prior art keywords
screen
fluorescent
electrons
color television
faces
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
US718364A
Other languages
English (en)
Inventor
Stanley J Koch
Robert E Rutherford
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.)
Allen B du Mont Laboratories Inc
Original Assignee
Allen B du Mont Laboratories Inc
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 FR957706D priority Critical patent/FR957706A/fr
Application filed by Allen B du Mont Laboratories Inc filed Critical Allen B du Mont Laboratories Inc
Priority to US718364A priority patent/US2544690A/en
Priority to GB33826/47A priority patent/GB655681A/en
Application granted granted Critical
Publication of US2544690A publication Critical patent/US2544690A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours

Definitions

  • This, invention relates to color television. It relates particularly to color television in which provision is made for transmitting the three colors red, blue and green simultaneously.
  • Each gun 4 is a source of light, that is, one gun
  • the invention may be understood from the excites the red fluorescent material on faces 5, description in connection with the accompanying another gun excites the green fluorescent madrawings in which: 7 l5 terial on faces 6, and the third gun excites the Fig. l is a side view of an illustrative embodiblue fluorescent material on faces 1.
  • Fig. l is a side view of an illustrative embodiblue fluorescent material on faces 1.
  • Fig. 3 is a plan view of enlarged elements showand l of the screen 3 to produce colored pictures. ing a screen for said tube.
  • This arrangement can, by keying in the known Fig. 4 is an edge view of Fig. 3. way, also be used with sequential colored tele- Fig. 5 is a plan view on an enlarged scale showvision systems by applying the proper color seing a small portion of Fig. 3. quence to the grids of the respective cathode-ray Fig. 6 is a cross section on a larger scale along tube guns 4. the line aa of Fig. 5 showing the aluminum It will be understood from this description that backing of the fluorescent screen. the angle at which the electrons strike the 7 s an edge view of a modification of fluorescent surfaces 5, 6 and 1, is critical.
  • Fig. 4. 3O electrons from guns 4 should strike their respec- In he drawin s referenc ch ra er 1 indi a s tive surfaces in a direction that is perpendicular a glass nvelop r u upon the i i f c 2 of or substantially perpendicular to these surfaces which is located a screen 3 to be described more i der t btain the best results. in detail below.
  • This screen 3 may be placed It has been found to be advantageous to apply upon the inside face 2 of the tube I or the screen a Very thin layer 9 (Fig. 6) of evaporated aluy be embodied in the inside Surface of the minum to the fluorescent surfaces 5, 6 and l. face 2.
  • each one of the faces 5, 6 and l, is at layers are used the guns can be brought closer approximately 90 to each of the other two faces. together and in this way the need for correction for the registry of the patterns due to the various angles of the guns is decreased.
  • a further advantage of the aluminizing using the reflection phenomena of the aluminum surface allows the tube to be viewed from a greater angle than otherwise would be the case, that is, the group of facets 'beinggmirrored by the aluminum reflects the lightjfromzthe opposite facets. .
  • surfaces which produce green light will also :be reflected from the other surfaces 6 and I so that the viewer from the far side who would not otherwise see the equal area of the green facet sees by reflection the desired amount :of the green color. This applies-to all three colorsso that there is not only a larger viewing angle for registering the proper colors, but there is also a better mixing of the colors .by reflection of the various lights within the facets themselves.
  • This larger viewing angle can be improvedby providing lenses 8 (Fig.2?) on the front side ofthe screenshownin Fig. 3,-each lens being the size of a group of three colors represented ,by reference characters 5,-6.and I.
  • This improvement in the viewing angle comesabout by .virtue of the .ability of the lenses to assist in the concentrationiof the three beams of light from the three sets of facets 5, 6, and 1 into one .beamof light maintaining "a goodcolor balance over a wider ,angle than is, possible without the lenses.
  • a color selection screen embossments on said screen; facets. on said embossments; said embossments jbeingarranged so that eachfacet on eachembossmentis substantially parallel ,to
  • a corresponding faceton adjacent embossments whereby a plurality of .groups .of surfaces is formed; a fluorescentcoating on said screen, said coating beingcomposedof diiferentmaterials on said groups .ofv surfaces, each .of said materials beingadapted to..emit' light ofa dilferent color than the othersof said materials whenexcited by electrons; and ametallicllayer ,coveringsaid fluorescent coating, .said metallic layer being permeable .to electrons that. strike it essentially perpendicularly .and impermeable .to electrons striking it substantially tangentially.
  • a ffluorescent screen comprising a lightpermeable plate embossed on onesurface with trihedral protuberances so arranged that each side of each of said protuberances is substantially parallel to one side of all other of said protuberances whereby the said surface is divided into three sets of substantially parallel planes; three types of fluorescent coatings, one type on each of said sets of planes, each of said types of coating ,having a naturalfluorescense in one of :the; three'-primary colors when excited-by electrons; and a metallic coating over said fluorescent coatings, said metallic coating being permeable to electrons only when struck thereby at an angle substantially normal to the plane thereof.
  • a fluorescent screen comprising a lightpermeableplateembossed on one surface with trihedral protuberances so arranged that each sideofzeach of; said protuberances is substantially parallel to one side of all other of said protuberances whereby the'said surface is divided into three-sets of substantially parallel planes; three types of fluorescent coatings, one type on each of said-setsof planeseachof said types of coatinghaving a natural fluorescence in ,oneof the three primary colors when excited by electrons; and a metalliccoating over saidffluorescent coatings, said metallic coating being permeable to electronsonly when struck thereby at an angle substantially normal to the, plane thereof; and a plurality of essentially coplanar lenses on the othersurface of said plate,.each of said lenses covering an area of the plate substantiallyequal to thearea of one of said trihedral protuberances.
  • a cathode ray tube having a fluorescent screen and a plurality of electron guns for generating electron beams for scanning said screen, one side of said screen beingembossed forming aplurality of, sets of fluorescent surfaces angularly disposed with respect to each other and positioned to be struck respectively by individual ones of said electron beams, and a metallic coating, over said fluorescent. screen,.said coating being permeable to electrons only when struck thereby at an angle substantially normal to the plane thereof.

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
US718364A 1946-12-26 1946-12-26 Color television Expired - Lifetime US2544690A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR957706D FR957706A (US06373033-20020416-M00071.png) 1946-12-26
US718364A US2544690A (en) 1946-12-26 1946-12-26 Color television
GB33826/47A GB655681A (en) 1946-12-26 1947-12-22 Improvements in or relating to color television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US718364A US2544690A (en) 1946-12-26 1946-12-26 Color television

Publications (1)

Publication Number Publication Date
US2544690A true US2544690A (en) 1951-03-13

Family

ID=24885821

Family Applications (1)

Application Number Title Priority Date Filing Date
US718364A Expired - Lifetime US2544690A (en) 1946-12-26 1946-12-26 Color television

Country Status (3)

Country Link
US (1) US2544690A (US06373033-20020416-M00071.png)
FR (1) FR957706A (US06373033-20020416-M00071.png)
GB (1) GB655681A (US06373033-20020416-M00071.png)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2577368A (en) * 1950-02-14 1951-12-04 Charles Doerr Color television receiving apparatus
US2605434A (en) * 1949-12-08 1952-07-29 John H Homrighous Single beam three color cathoderay tube
US2606303A (en) * 1951-02-17 1952-08-05 Bramley Jenny Color television tube and process
US2622220A (en) * 1949-03-22 1952-12-16 Technicolor Motion Picture Television color screen
US2633547A (en) * 1950-06-30 1953-03-31 Rca Corp Two-sided electron-sensitive screen
US2677073A (en) * 1947-12-02 1954-04-27 Du Mont Allen B Lab Inc Control device for simultaneous color television
US2692532A (en) * 1951-04-04 1954-10-26 Chromatic Television Lab Inc Cathode ray focusing apparatus
US2769111A (en) * 1951-07-25 1956-10-30 Philco Corp Optical system
US2930930A (en) * 1957-05-03 1960-03-29 Kaiser Ind Corp Electronic device
US3011090A (en) * 1952-06-24 1961-11-28 Rca Corp Plural beam tube
US3136917A (en) * 1960-03-14 1964-06-09 Dick Co Ab Electrostatic writing means
US3184630A (en) * 1960-07-12 1965-05-18 Geer Charles Willard Three-dimensional display apparatus
US3226596A (en) * 1963-06-21 1965-12-28 Kasperowicz Henry Flat color cathode ray tube
EP0127678A1 (en) * 1982-12-13 1984-12-12 Battelle Development Corporation Providing patterns

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029639A (en) * 1931-12-24 1936-02-04 Schlesinger Kurt Braun tube
US2083203A (en) * 1932-10-01 1937-06-08 Schlesinger Kurt Braun tube
US2121356A (en) * 1934-02-02 1938-06-21 Telefunken Gmbh Electron tube
GB508037A (en) * 1937-12-24 1939-06-26 Kolster Brandes Ltd Colour television system
US2170944A (en) * 1937-05-29 1939-08-29 Bell Telephone Labor Inc Multicathode ray discharge device
US2180957A (en) * 1936-03-04 1939-11-21 Telefunken Gmbh Electronic device
US2195489A (en) * 1937-10-26 1940-04-02 Rca Corp Television transmitting tube
US2201245A (en) * 1936-11-17 1940-05-21 Firm Fernseh Aktien Ges Cathode ray projection tube
US2280191A (en) * 1939-09-30 1942-04-21 Hazeltine Corp Cathode-ray signal-reproducing unit
US2289978A (en) * 1940-11-30 1942-07-14 Rca Corp Television picture tube screen
US2310863A (en) * 1941-01-25 1943-02-09 Rca Corp Luminescent screen
US2312792A (en) * 1941-08-14 1943-03-02 Farnsworth Television Color television system
US2337980A (en) * 1941-04-26 1943-12-28 Du Mont Allen B Lab Inc System for color television receivers
GB562168A (en) * 1942-07-25 1944-06-21 John Logie Baird Improvements in colour television
US2367277A (en) * 1938-01-20 1945-01-16 Henroteau Francois Char Plerre Method and apparatus for frequency changing
USRE22734E (en) * 1938-02-03 1946-03-19 Television receiving system
US2415311A (en) * 1942-05-13 1947-02-04 Rauland Corp Cathode-ray tube projector

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029639A (en) * 1931-12-24 1936-02-04 Schlesinger Kurt Braun tube
US2083203A (en) * 1932-10-01 1937-06-08 Schlesinger Kurt Braun tube
US2121356A (en) * 1934-02-02 1938-06-21 Telefunken Gmbh Electron tube
US2180957A (en) * 1936-03-04 1939-11-21 Telefunken Gmbh Electronic device
US2201245A (en) * 1936-11-17 1940-05-21 Firm Fernseh Aktien Ges Cathode ray projection tube
US2170944A (en) * 1937-05-29 1939-08-29 Bell Telephone Labor Inc Multicathode ray discharge device
US2195489A (en) * 1937-10-26 1940-04-02 Rca Corp Television transmitting tube
GB508037A (en) * 1937-12-24 1939-06-26 Kolster Brandes Ltd Colour television system
US2367277A (en) * 1938-01-20 1945-01-16 Henroteau Francois Char Plerre Method and apparatus for frequency changing
USRE22734E (en) * 1938-02-03 1946-03-19 Television receiving system
US2280191A (en) * 1939-09-30 1942-04-21 Hazeltine Corp Cathode-ray signal-reproducing unit
US2289978A (en) * 1940-11-30 1942-07-14 Rca Corp Television picture tube screen
US2310863A (en) * 1941-01-25 1943-02-09 Rca Corp Luminescent screen
US2337980A (en) * 1941-04-26 1943-12-28 Du Mont Allen B Lab Inc System for color television receivers
US2312792A (en) * 1941-08-14 1943-03-02 Farnsworth Television Color television system
US2415311A (en) * 1942-05-13 1947-02-04 Rauland Corp Cathode-ray tube projector
GB562168A (en) * 1942-07-25 1944-06-21 John Logie Baird Improvements in colour television

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677073A (en) * 1947-12-02 1954-04-27 Du Mont Allen B Lab Inc Control device for simultaneous color television
US2622220A (en) * 1949-03-22 1952-12-16 Technicolor Motion Picture Television color screen
US2605434A (en) * 1949-12-08 1952-07-29 John H Homrighous Single beam three color cathoderay tube
US2577368A (en) * 1950-02-14 1951-12-04 Charles Doerr Color television receiving apparatus
US2633547A (en) * 1950-06-30 1953-03-31 Rca Corp Two-sided electron-sensitive screen
US2606303A (en) * 1951-02-17 1952-08-05 Bramley Jenny Color television tube and process
US2692532A (en) * 1951-04-04 1954-10-26 Chromatic Television Lab Inc Cathode ray focusing apparatus
US2769111A (en) * 1951-07-25 1956-10-30 Philco Corp Optical system
US3011090A (en) * 1952-06-24 1961-11-28 Rca Corp Plural beam tube
US2930930A (en) * 1957-05-03 1960-03-29 Kaiser Ind Corp Electronic device
US3136917A (en) * 1960-03-14 1964-06-09 Dick Co Ab Electrostatic writing means
US3184630A (en) * 1960-07-12 1965-05-18 Geer Charles Willard Three-dimensional display apparatus
US3226596A (en) * 1963-06-21 1965-12-28 Kasperowicz Henry Flat color cathode ray tube
EP0127678A1 (en) * 1982-12-13 1984-12-12 Battelle Development Corporation Providing patterns
US4494865A (en) * 1982-12-13 1985-01-22 Battelle Development Corporation Providing patterns
EP0127678A4 (en) * 1982-12-13 1985-12-30 Battelle Development Corp PRODUCTION OF PATTERNS.

Also Published As

Publication number Publication date
FR957706A (US06373033-20020416-M00071.png) 1950-02-24
GB655681A (en) 1951-08-01

Similar Documents

Publication Publication Date Title
US2544690A (en) Color television
US2480848A (en) Color television device
US2633547A (en) Two-sided electron-sensitive screen
US2728024A (en) Cathode-ray tubes of the lenticular grill variety
US2755402A (en) Color kinescopes of the masked-target dot-screen variety
US2595548A (en) Picture reproducing apparatus
US2579705A (en) Color television system
US2567714A (en) Cathode-ray tube
US5856725A (en) Shadow mask with edge slots configuration
GB857451A (en) Improvements in and relating to image-reproducing cathode ray tube apparatus
US4654559A (en) Flat color cathode-ray tube
US4720655A (en) Flat color cathode-ray tube with phosphor index stripes
US2612614A (en) Cathode-ray tube for color television systems
US2685660A (en) Television tube
US3633058A (en) Color picture tube with rectangular hall shadow mask
US4220892A (en) Phosphor screen for modular flat panel display device
US2740065A (en) Cathode ray display tubes
US3408456A (en) Method for providing high definition colored television image
US3344301A (en) Subtractive type color cathode ray tube having overlapping color phosphor areas
USRE26251E (en) Cathode ray tube having a color- selection electrode with large apertures
US3952225A (en) Cathode-ray tube having phosphor screen interposed between composite mesh and reflective layer
US2967262A (en) Multi-color display tube
US2858233A (en) Method of forming a multi-color screen on the image plate of a color television tube and product
US2791626A (en) Color kinescope
US3443139A (en) Color cathode ray tube with radiation-emitting strip-like indexing areas having serrated edges