GB1472926A - Refractive device for use in the formation of colour television picture tube screens - Google Patents

Refractive device for use in the formation of colour television picture tube screens

Info

Publication number
GB1472926A
GB1472926A GB1903474A GB1903474A GB1472926A GB 1472926 A GB1472926 A GB 1472926A GB 1903474 A GB1903474 A GB 1903474A GB 1903474 A GB1903474 A GB 1903474A GB 1472926 A GB1472926 A GB 1472926A
Authority
GB
United Kingdom
Prior art keywords
colour television
resin
formation
picture tube
refractive device
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
Application number
GB1903474A
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.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1472926A publication Critical patent/GB1472926A/en
Expired legal-status Critical Current

Links

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
    • H01J29/02—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
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • H01J29/327—Black matrix materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses
    • H01J9/2273—Auxiliary lenses and filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2278—Application of light absorbing material, e.g. between the luminescent areas

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

1472926 Manufacturing colour television tubes RCA CORPORATION 1 May 1974 [2 May 1973] 19034/74 Heading H1D A refractive device (used for correction in the exposure of photo-resist in the course of producing a colour television luminescent screen) includes a layer 22 of a silicone resin which will not decline in transmittance when used with ultra violet light in the 290-400 nm. wavelength range. The silicone resin can be supported on a glass plate 20. The effective surface of the layer 22 can be discontinuous as shown or continuously curved, Fig. 1 (not shown). In the former case the discontinuities can be masked, the masks being on a glass plate spaced from the device, Fig. 3, on the discontinuity surface, Fig. 4, embedded in the resin, Fig. 5, or at the interface of the resin and glass, Fig. 6 (none of these figures shown here).
GB1903474A 1973-05-02 1974-05-01 Refractive device for use in the formation of colour television picture tube screens Expired GB1472926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US356454A US3893750A (en) 1973-05-02 1973-05-02 Cathode-ray tube screening correction lens with a non-solarizing material

Publications (1)

Publication Number Publication Date
GB1472926A true GB1472926A (en) 1977-05-11

Family

ID=23401481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1903474A Expired GB1472926A (en) 1973-05-02 1974-05-01 Refractive device for use in the formation of colour television picture tube screens

Country Status (12)

Country Link
US (1) US3893750A (en)
JP (1) JPS5016549A (en)
AU (1) AU475196B2 (en)
BE (1) BE814360A (en)
BR (1) BR7403501D0 (en)
CA (1) CA1016377A (en)
DE (1) DE2421255B2 (en)
FR (1) FR2228229B1 (en)
GB (1) GB1472926A (en)
IT (1) IT1010922B (en)
NL (1) NL7405487A (en)
SU (1) SU592343A3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52140343U (en) * 1976-04-17 1977-10-24
JPS52143847A (en) * 1976-05-26 1977-11-30 Mitsubishi Electric Corp Optical lens
US4235503A (en) * 1978-05-08 1980-11-25 Condon Chris J Film projection lens system for 3-D movies
IT1115189B (en) * 1978-05-30 1986-02-03 Rca Corp FRESNEL LENS
JPS5649501U (en) * 1979-09-25 1981-05-01
JPS59180502A (en) * 1983-03-30 1984-10-13 Toshiba Electric Equip Corp Light control body
JPS59180506A (en) * 1983-03-30 1984-10-13 Toshiba Electric Equip Corp Light control body
US4650275A (en) * 1983-06-15 1987-03-17 Jones Neal K Thin plastic corrector lenses for optical systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279340A (en) * 1964-03-19 1966-10-18 Rca Corp Art of making color-phosphor mosaic screens
US3486825A (en) * 1965-05-10 1969-12-30 Bradford Howland Optical test equipment and methods for making and using same

Also Published As

Publication number Publication date
DE2421255B2 (en) 1979-06-21
CA1016377A (en) 1977-08-30
BE814360A (en) 1974-08-16
NL7405487A (en) 1974-11-05
US3893750A (en) 1975-07-08
BR7403501D0 (en) 1974-11-19
SU592343A3 (en) 1978-02-05
AU475196B2 (en) 1976-08-12
AU6845874A (en) 1975-11-06
IT1010922B (en) 1977-01-20
FR2228229A1 (en) 1974-11-29
FR2228229B1 (en) 1977-06-24
JPS5016549A (en) 1975-02-21
DE2421255A1 (en) 1974-11-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee