GB1428180A - Thermal image converter - Google Patents

Thermal image converter

Info

Publication number
GB1428180A
GB1428180A GB1756673A GB1756673A GB1428180A GB 1428180 A GB1428180 A GB 1428180A GB 1756673 A GB1756673 A GB 1756673A GB 1756673 A GB1756673 A GB 1756673A GB 1428180 A GB1428180 A GB 1428180A
Authority
GB
United Kingdom
Prior art keywords
screen
thermal image
modulate
converter
image converter
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
GB1756673A
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB1756673A priority Critical patent/GB1428180A/en
Priority to JP49040096A priority patent/JPS5048825A/ja
Priority to NL7404895A priority patent/NL7404895A/xx
Priority to FR7412856A priority patent/FR2225838A1/fr
Priority to CA197,402A priority patent/CA995726A/en
Priority to US459972A priority patent/US3898461A/en
Priority to DE19742417825 priority patent/DE2417825A1/en
Publication of GB1428180A publication Critical patent/GB1428180A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • H01J31/54—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output in which the electron ray or beam is reflected by the image input screen on to the image output screen

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

1428180 Image converter tubes DEFENCE SECRETARY OF STATE FOR 7 May 1974 [12 April 1973] 17566/73 Heading H1D A thermal image converter incorporates a pyroelectric screen 2, e.g. of tri-glycine sulphate, upon which the thermal image is incident through the germanium window 4 and an infrared transparent, positively-biased, electrode layer 7, e.g. of graphite, to modulate the reflection from the opposite side 15 of the screen of the flood beam from the electron gun 8, the reflected beam being diverted by a transverse magnetic field provided by a pair of coils 11 on to the fluorescent viewing screen 19. To prevent fading of the display due to progressive charge equalization over the surface 15 of the screen 2 when viewing a stationary scene, either the converter is moved about, or a chopper is employed to modulate the received image. The cylindrical anode 12 is maintained in position in the envelope by spring tangs 20, the other parts being supported from the anode by insulators 21.
GB1756673A 1973-04-12 1973-04-12 Thermal image converter Expired GB1428180A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB1756673A GB1428180A (en) 1973-04-12 1973-04-12 Thermal image converter
JP49040096A JPS5048825A (en) 1973-04-12 1974-04-10
NL7404895A NL7404895A (en) 1973-04-12 1974-04-10
FR7412856A FR2225838A1 (en) 1973-04-12 1974-04-11
CA197,402A CA995726A (en) 1973-04-12 1974-04-11 Thermal image converters
US459972A US3898461A (en) 1973-04-12 1974-04-11 Thermal image converters
DE19742417825 DE2417825A1 (en) 1973-04-12 1974-04-11 HEAT RADIATION IMAGER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1756673A GB1428180A (en) 1973-04-12 1973-04-12 Thermal image converter

Publications (1)

Publication Number Publication Date
GB1428180A true GB1428180A (en) 1976-03-17

Family

ID=10097433

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1756673A Expired GB1428180A (en) 1973-04-12 1973-04-12 Thermal image converter

Country Status (7)

Country Link
US (1) US3898461A (en)
JP (1) JPS5048825A (en)
CA (1) CA995726A (en)
DE (1) DE2417825A1 (en)
FR (1) FR2225838A1 (en)
GB (1) GB1428180A (en)
NL (1) NL7404895A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032783A (en) * 1975-06-09 1977-06-28 Hughes Aircraft Company Pyroelectric radiation sensor and imaging device utilizing same
US4300047A (en) * 1979-03-12 1981-11-10 Kureha Kagaku Kogyo Kabushiki Kaisha Method and apparatus for detecting infrared rays and converting infrared rays to visible rays

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2288766A (en) * 1937-09-24 1942-07-07 Rca Corp Radiant energy receiving device
US3014148A (en) * 1958-04-21 1961-12-19 United Aircraft Corp Infrared photo-imaging device
US3324329A (en) * 1965-07-22 1967-06-06 Hughes Aircraft Co Infrared image converter and display tube
US3590254A (en) * 1969-11-26 1971-06-29 Walter Wysoczanski Infrared image converter
US3684996A (en) * 1970-04-13 1972-08-15 Barnes Eng Co High-sensitivity, long-time-constant thermistor bolometer
FR2137164B1 (en) * 1971-05-14 1973-05-11 Thomson Csf

Also Published As

Publication number Publication date
CA995726A (en) 1976-08-24
JPS5048825A (en) 1975-05-01
DE2417825A1 (en) 1974-10-31
FR2225838A1 (en) 1974-11-08
US3898461A (en) 1975-08-05
NL7404895A (en) 1974-10-15

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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