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JPS6424343A - X-ray image tube and its manufacture - Google Patents

X-ray image tube and its manufacture

Info

Publication number
JPS6424343A
JPS6424343A JP18143287A JP18143287A JPS6424343A JP S6424343 A JPS6424343 A JP S6424343A JP 18143287 A JP18143287 A JP 18143287A JP 18143287 A JP18143287 A JP 18143287A JP S6424343 A JPS6424343 A JP S6424343A
Authority
JP
Japan
Prior art keywords
periphery
center
input substrate
vacuum evaporation
evaporation film
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.)
Granted
Application number
JP18143287A
Other languages
Japanese (ja)
Other versions
JP2543895B2 (en
Inventor
Shozo Sato
Takashi Noji
Shigeharu Kawamura
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP62181432A priority Critical patent/JP2543895B2/en
Publication of JPS6424343A publication Critical patent/JPS6424343A/en
Application granted granted Critical
Publication of JP2543895B2 publication Critical patent/JP2543895B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

PURPOSE:To reduce the difference of the output brightness at the center and at the periphery by forming a metallic vacuum evaporation film and making the light reflection rate of the input substrate lower at the center and higher gradually toward the periphery. CONSTITUTION:At the output side of an input substrate 6, or between the input substrate 6 and an input fluorescent screen 8, a metallic vacuum evaporation film 7 is formed. The metallic vacuum evaporation film 7 consists of a metal which can be vacuum-evaporated such as aluminum, nickel, chromium, iron, gold, silver, and the like, or an alloy of them, and the thickness of the metallic vacuum evaporation film 7 is made thicker at the center and thinner gradually to the periphery, in order to make the light reflection rate of the input substrate 6 lower at the center and higher gradually to the periphery. By changing the light reflection rate at the surface of the input substrate 6 at the center and at the periphery, and blackening the periphery, the uniformity of the picture image at the output position can be obtained.
JP62181432A 1987-07-21 1987-07-21 X-ray image tube and method of manufacturing the same Expired - Fee Related JP2543895B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62181432A JP2543895B2 (en) 1987-07-21 1987-07-21 X-ray image tube and method of manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62181432A JP2543895B2 (en) 1987-07-21 1987-07-21 X-ray image tube and method of manufacturing the same

Publications (2)

Publication Number Publication Date
JPS6424343A true JPS6424343A (en) 1989-01-26
JP2543895B2 JP2543895B2 (en) 1996-10-16

Family

ID=16100671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62181432A Expired - Fee Related JP2543895B2 (en) 1987-07-21 1987-07-21 X-ray image tube and method of manufacturing the same

Country Status (1)

Country Link
JP (1) JP2543895B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683388A1 (en) * 1991-10-31 1993-05-07 Thomson Tubes Electroniques RADIOLOGICAL IMAGE INTENSIFIER TUBE WITH IMPROVED RESOLUTION.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683388A1 (en) * 1991-10-31 1993-05-07 Thomson Tubes Electroniques RADIOLOGICAL IMAGE INTENSIFIER TUBE WITH IMPROVED RESOLUTION.
US5315103A (en) * 1991-10-31 1994-05-24 Thomson Tubes Electroniques Radiological image intensifier tube with dyed porous alumina layer

Also Published As

Publication number Publication date
JP2543895B2 (en) 1996-10-16

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees