GB622484A - Electron-optical device - Google Patents

Electron-optical device

Info

Publication number
GB622484A
GB622484A GB24067/46A GB2406746A GB622484A GB 622484 A GB622484 A GB 622484A GB 24067/46 A GB24067/46 A GB 24067/46A GB 2406746 A GB2406746 A GB 2406746A GB 622484 A GB622484 A GB 622484A
Authority
GB
United Kingdom
Prior art keywords
screen
focussing
cathode
tube
fluorescent screen
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
GB24067/46A
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.)
APPLIC TELEPHONIQUES SOC D
Original Assignee
APPLIC TELEPHONIQUES SOC D
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 APPLIC TELEPHONIQUES SOC D filed Critical APPLIC TELEPHONIQUES SOC D
Publication of GB622484A publication Critical patent/GB622484A/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
    • H01J31/506—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output tubes using secondary emission effect

Landscapes

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

Abstract

622,484. Discharge apparatus. SOC. D'APPLICATIONS TELEPHONIQUES. Aug. 13, 1946, No. 24067. Convention date, Sept. 11, 1944. [Class 39 (i)] An electronic tele scope comprises E photo-electric cathode 2 on the wall of an electronic tube 1, a concave mirror 3 focussing ar image on to the inwardly-directed surface of the cathode, secondary electron-emitting electrodes 5, focussing electrodes 4, 6, 7, a fluorescent screen 8 and a second concave mirror 11, focussing the image on screen 8 into an eye-piece (not shown). The fluorescent screen 8 may be transparent or opaque. A screen 9 may be mounted on mirror 3 to exclude visible radiation and pass infra-red radiation. The Specification as open to inspection under Sect. 91 also comprises concave mirrors which are integral parts of the tube, flared parts being plated to form specular surfaces, and the whole is enclosed in a tube provided with an eye-piece. The photo-cathode and fluorescent screen are arranged at the focal points of the mirrors. This subject-matter does not appear in the Specification as accepted.
GB24067/46A 1944-09-11 1946-08-13 Electron-optical device Expired GB622484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR906923T 1944-09-11

Publications (1)

Publication Number Publication Date
GB622484A true GB622484A (en) 1949-05-03

Family

ID=9405955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24067/46A Expired GB622484A (en) 1944-09-11 1946-08-13 Electron-optical device

Country Status (2)

Country Link
FR (1) FR906923A (en)
GB (1) GB622484A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350919A (en) * 1977-09-19 1982-09-21 International Telephone And Telegraph Corporation Magnetically focused streak tube

Also Published As

Publication number Publication date
FR906923A (en) 1946-02-25

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