JPS563939A - Exposure apparatus for forming fluorescent screen of color picture tube - Google Patents

Exposure apparatus for forming fluorescent screen of color picture tube

Info

Publication number
JPS563939A
JPS563939A JP7945879A JP7945879A JPS563939A JP S563939 A JPS563939 A JP S563939A JP 7945879 A JP7945879 A JP 7945879A JP 7945879 A JP7945879 A JP 7945879A JP S563939 A JPS563939 A JP S563939A
Authority
JP
Japan
Prior art keywords
light
plate
distribution
axis
face plate
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.)
Pending
Application number
JP7945879A
Other languages
Japanese (ja)
Inventor
Kenji Nojima
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7945879A priority Critical patent/JPS563939A/en
Publication of JPS563939A publication Critical patent/JPS563939A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

PURPOSE:To improve the yield of color picture tubes and lengthen the life of a super high-pressure mercury lamp, by providing a light transmittable plate in nonparallel to a sealed surface of a face plate perpendicular to a picture tube axis and rotating said plate about an axis which is parallel with said axis. CONSTITUTION:A light transmittable plate 8 is provided at an angle of alpha with respect to a sealed surface of a face plate 4 in such a manner that a light distribution from a light source 7 is corrected to be a desired distribution through a correcting filter 13 and its light path is corrected by a lens 14. Light 15 which has been passed through the thus-formed optical system travels further through an opening hole of a shadow gril 2 provided inside the face plate 4 and reaches the inner surface of plate 4. This light transmittable plate 8 is held at a predetermined angle of alpha by a turning ring 9 and turned by a transmission mechanism such as pulley 11 and drive belt 10, using a motor 12 as its power source. Accordingly, the distribution of light intensity becomes narrower and its tolerance in a mass-production increases, resulting in an improved yield and a prolonged life of a marcury lamp which is weak to vibrations.
JP7945879A 1979-06-20 1979-06-20 Exposure apparatus for forming fluorescent screen of color picture tube Pending JPS563939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7945879A JPS563939A (en) 1979-06-20 1979-06-20 Exposure apparatus for forming fluorescent screen of color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7945879A JPS563939A (en) 1979-06-20 1979-06-20 Exposure apparatus for forming fluorescent screen of color picture tube

Publications (1)

Publication Number Publication Date
JPS563939A true JPS563939A (en) 1981-01-16

Family

ID=13690431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7945879A Pending JPS563939A (en) 1979-06-20 1979-06-20 Exposure apparatus for forming fluorescent screen of color picture tube

Country Status (1)

Country Link
JP (1) JPS563939A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168581U (en) * 1982-05-04 1983-11-10 株式会社豊田自動織機製作所 Heald frame for selvedge weaving on a loom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168581U (en) * 1982-05-04 1983-11-10 株式会社豊田自動織機製作所 Heald frame for selvedge weaving on a loom

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