GB1335506A - Exposure device for manufacturing a display screen of a colour display cathode ray tube - Google Patents

Exposure device for manufacturing a display screen of a colour display cathode ray tube

Info

Publication number
GB1335506A
GB1335506A GB2102672A GB2102672A GB1335506A GB 1335506 A GB1335506 A GB 1335506A GB 2102672 A GB2102672 A GB 2102672A GB 2102672 A GB2102672 A GB 2102672A GB 1335506 A GB1335506 A GB 1335506A
Authority
GB
United Kingdom
Prior art keywords
lens
axis
produces
manufacturing
ray tube
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
GB2102672A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1335506A publication Critical patent/GB1335506A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Abstract

1335506 Luminescent screens PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 May 1972 [8 May 1971] 21026/72 Heading H1D [Also in Division G2] In a lighthouse for the manufacture of a colour television screen by exposure of a photoresist through a shadow mask, the lens system 8 includes a refractive surface having a stepped profile which divides the lens into annular zones, the transition zones 13-15 between steps being tangential to the light paths. In the arrangement shown the lens system comprises a symmetrical lens 1 which produces a virtual displacement of the light source along the axis which increase with the angle of the rays to the axis, and a stepped lens 12 which produces a virtual displacement of the source normal to the axis in the plane of the drawing which increases with the angle. A motor 18 is provided for moving the lens 12 so that its centre describes a circle of 1À5 mm. radius in order to reduce the effect of residual scattering at the transition regions 13-15. If desired the lens 1 may be made asymmetrical so that it produces part of the required displacement of the light source normal to the axis.
GB2102672A 1971-05-08 1972-05-05 Exposure device for manufacturing a display screen of a colour display cathode ray tube Expired GB1335506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7106346A NL7106346A (en) 1971-05-08 1971-05-08

Publications (1)

Publication Number Publication Date
GB1335506A true GB1335506A (en) 1973-10-31

Family

ID=19813114

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2102672A Expired GB1335506A (en) 1971-05-08 1972-05-05 Exposure device for manufacturing a display screen of a colour display cathode ray tube

Country Status (6)

Country Link
US (1) US3738234A (en)
JP (1) JPS5037496B1 (en)
DE (1) DE2220430C3 (en)
FR (1) FR2137616B1 (en)
GB (1) GB1335506A (en)
NL (1) NL7106346A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154756A (en) * 1980-10-31 1985-09-11 Humphrey Instruments Inc Refractive optical element

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL158650B (en) * 1971-05-14 1978-11-15 Philips Nv METHOD AND DEVICE FOR THE MANUFACTURE OF A DISPLAY OF A COLOR TV DISPLAY TUBE.
US4037936A (en) * 1972-10-18 1977-07-26 Rca Corporation Correcting lens having two effective surfaces
US3828358A (en) * 1972-11-17 1974-08-06 Sony Corp Exposure apparatus for the direct photographic production of a phosphor screen on the face-plate of a color picture tube
JPS4988465A (en) * 1972-12-25 1974-08-23
JPS49106281A (en) * 1973-02-09 1974-10-08
US3782253A (en) * 1973-05-02 1974-01-01 Rca Corp Color television picture tube screening method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE634597A (en) * 1962-07-06
US3279340A (en) * 1964-03-19 1966-10-18 Rca Corp Art of making color-phosphor mosaic screens
US3628850A (en) * 1970-02-24 1971-12-21 Hitachi Ltd Correcting lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154756A (en) * 1980-10-31 1985-09-11 Humphrey Instruments Inc Refractive optical element

Also Published As

Publication number Publication date
DE2220430A1 (en) 1972-11-23
FR2137616A1 (en) 1972-12-29
JPS5037496B1 (en) 1975-12-03
DE2220430C3 (en) 1980-09-25
NL7106346A (en) 1972-11-10
DE2220430B2 (en) 1980-01-24
FR2137616B1 (en) 1980-03-14
US3738234A (en) 1973-06-12

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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