GB1159818A - Light Source. - Google Patents

Light Source.

Info

Publication number
GB1159818A
GB1159818A GB53166/66A GB5316666A GB1159818A GB 1159818 A GB1159818 A GB 1159818A GB 53166/66 A GB53166/66 A GB 53166/66A GB 5316666 A GB5316666 A GB 5316666A GB 1159818 A GB1159818 A GB 1159818A
Authority
GB
United Kingdom
Prior art keywords
light
degrees
lens
configuration
axis
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
GB53166/66A
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.)
National Video Corp
Original Assignee
National Video 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 National Video Corp filed Critical National Video Corp
Publication of GB1159818A publication Critical patent/GB1159818A/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
    • H01J9/2274—Light sources particularly adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

1,159,818. Lamps. NATIONAL VIDEO CORP. 28 Nov., 1966 [10 Dec., 1965], No. 53166/66. Heading F4R. [Also in Divisions G2 and H1] Light source apparatus for use in lighthouse structures for forming phosphor dot patterns in shadow mask colour TV tubes comprises a source of light 40 (e.g. a mercury arc lamp at prime focus 41) within a housing including reflector 31, preferably elliptically shaped, and a lens positioned in opening 50, the configuration of the lens being such as to cause the light directed toward the edges of the tube face to be of substantially greater intensity than the light directed toward the centre of the tube face. Preferably the configuration and refractive index of the lens is such as to produce a cardiod radiation pattern (Fig. 6a, not shown). In embodiments, the maximum amount of light is deflected by no more then 45 degrees, e.g. 35 to 45 degrees from axis 42, the angle of the entry surface (155, Fig. 4, not shown), of a quartz lens is 18 degrees 30 minutes to the longitudinal axis for 3650Š radiation, and the exit surface, chosen to intersect the narrowest portion of the emergent beam, may be at 30 to 45 degrees to axis 42. The entry surface may be extended (to point 58, Fig. 4, not shown) to form a cone-shaped configuration yielding less light parallel to axis 42 compared with the truncated cone configuration; intermediate variations allow control of the light distribution.
GB53166/66A 1965-12-10 1966-11-28 Light Source. Expired GB1159818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US513033A US3380354A (en) 1965-12-10 1965-12-10 Light source for shadow mask tubes

Publications (1)

Publication Number Publication Date
GB1159818A true GB1159818A (en) 1969-07-30

Family

ID=24041631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53166/66A Expired GB1159818A (en) 1965-12-10 1966-11-28 Light Source.

Country Status (5)

Country Link
US (1) US3380354A (en)
DE (1) DE1462871B2 (en)
FR (1) FR1504229A (en)
GB (1) GB1159818A (en)
NL (1) NL6616697A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249661A (en) * 1990-09-22 1992-05-13 Samsung Electronic Devices Colour cathode ray tube screen exposure apparatus.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452657A (en) * 1966-07-18 1969-07-01 William J G Cox Multiple pin-hole camera
US3509802A (en) * 1966-12-29 1970-05-05 Sylvania Electric Prod Cathode ray tube exposure optics
US4152154A (en) * 1970-06-05 1979-05-01 U.S. Philips Corporation Method of optically projecting a pattern of substantially circular apertures on a photosensitive layer by rotating light source

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941457A (en) * 1954-09-15 1960-06-21 Rca Corp Apparatus for use in the manufacture of mosaic screens for color-kinescopes, etc.
BE544830A (en) * 1955-02-01
US2942099A (en) * 1958-04-11 1960-06-21 Rca Corp Optical projection system
US3211067A (en) * 1962-06-15 1965-10-12 Rauland Corp Method of exposing a multi-color target structure
US3259038A (en) * 1963-12-27 1966-07-05 Sylvania Electric Prod Light attenuator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249661A (en) * 1990-09-22 1992-05-13 Samsung Electronic Devices Colour cathode ray tube screen exposure apparatus.
GB2249661B (en) * 1990-09-22 1994-11-23 Samsung Electronic Devices Colour cathode ray tube screen exposure apparatus

Also Published As

Publication number Publication date
DE1462871A1 (en) 1969-01-23
US3380354A (en) 1968-04-30
NL6616697A (en) 1967-06-12
FR1504229A (en) 1967-12-01
DE1462871B2 (en) 1972-05-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees