JPS6486432A - Proximity type image tube - Google Patents

Proximity type image tube

Info

Publication number
JPS6486432A
JPS6486432A JP24455787A JP24455787A JPS6486432A JP S6486432 A JPS6486432 A JP S6486432A JP 24455787 A JP24455787 A JP 24455787A JP 24455787 A JP24455787 A JP 24455787A JP S6486432 A JPS6486432 A JP S6486432A
Authority
JP
Japan
Prior art keywords
sealing
pressure
copper
ring
flange
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
JP24455787A
Other languages
Japanese (ja)
Inventor
Kozo Ichikawa
Minoru Tsuchikawa
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP24455787A priority Critical patent/JPS6486432A/en
Publication of JPS6486432A publication Critical patent/JPS6486432A/en
Pending legal-status Critical Current

Links

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

PURPOSE:To keep off any pollution due to alkaline metals and secure such a seal that is excellent in reliability as well as to aim at preventing a photoelectron emission function from deteriorating by hermetically sealing a light input window and a tube body in such a way as to press a copper flange in a vacuum. CONSTITUTION:In a tube body 101, a coppery sealing flange 11 is brazed to an insulating structure, and a sealing flange 10 brazed with a ring 10a consisting of an iron-nickel alloy and a ring 10b consisting of copper is welded to a light input window 12 by frit glass 7. After a photoelcetron emission surface 8 is formed in a vacuum chamber, these sealing flanges 10 and 11 are pressurized and rolled by a pressure ring 20 and sealed under pressure. This pressure ring 20 is removed after this pressure sealing. Thus, a new copper surface appears on a joining plane between these copper sealing franges 10 and 11 and sealed under pressure, so that any influence of pollution due to alkaline metals is brought to nothing and a highly reliable seal comes possible and, what is more, owing to cold pressure-contact, any deterioration in a photoelectron emission function is preventable.
JP24455787A 1987-09-28 1987-09-28 Proximity type image tube Pending JPS6486432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24455787A JPS6486432A (en) 1987-09-28 1987-09-28 Proximity type image tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24455787A JPS6486432A (en) 1987-09-28 1987-09-28 Proximity type image tube

Publications (1)

Publication Number Publication Date
JPS6486432A true JPS6486432A (en) 1989-03-31

Family

ID=17120481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24455787A Pending JPS6486432A (en) 1987-09-28 1987-09-28 Proximity type image tube

Country Status (1)

Country Link
JP (1) JPS6486432A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017730A (en) * 1989-03-27 1991-05-21 Central Glass Company, Limited Process of preparing bis (trifluoromethylphenyl) methanol

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017730A (en) * 1989-03-27 1991-05-21 Central Glass Company, Limited Process of preparing bis (trifluoromethylphenyl) methanol

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