GB716268A - Improvements in or relating to cameras - Google Patents

Improvements in or relating to cameras

Info

Publication number
GB716268A
GB716268A GB19088/52A GB1908852A GB716268A GB 716268 A GB716268 A GB 716268A GB 19088/52 A GB19088/52 A GB 19088/52A GB 1908852 A GB1908852 A GB 1908852A GB 716268 A GB716268 A GB 716268A
Authority
GB
United Kingdom
Prior art keywords
image
camera
converter
view
finder
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
GB19088/52A
Inventor
Frank Runcorn Trott
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB19088/52A priority Critical patent/GB716268A/en
Publication of GB716268A publication Critical patent/GB716268A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

716,268. Television. ELECTRIC & MUSICAL INDUSTRIES, Ltd. July 14, 1953 [July 29, 1952], No. 19088/52. Class 40 (3) A television camera 1 is provided with an electronic image-converter 6, the scene to be viewed being projected through the lens turret 5 on to the photo-cathode 7 and the resulting image on the luminescent 8 being projected on to the sensitive surface 3 of the camera pick-up tube 2 and also being arranged to constitute the image for the camera view-finder 10. As shown, a halfsilvered mirror 9 is disposed between screen 8 and the view-finder and co-operates with a further mirror 12 to project the image on to surface 3. Figs. 2 and 3 (not shown) illustrate two other ways in which the image-converter, camera tube and view-finder may be disposed within the camera case. An iris diaphragm may be provided between the image-converter and surface 3. The image-converter may project an enlarged image in the view-finder and may also provide a marginal field of view. Suitable deflecting fields may be employed to shift the electronic image in the converter to permit the effective field of view of the camera to be changed without interfering with the camera scanning. The converter may be pulsed to enable transient or rapidly changing phenomena to be observed whilst still operating the camera tube under normal storage conditions. It is stated that the colour response of the sensitive surface of the camera tube and the screen of the image-converter may be matched to improve the signal-to-noise ratio.
GB19088/52A 1952-07-29 1952-07-29 Improvements in or relating to cameras Expired GB716268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB19088/52A GB716268A (en) 1952-07-29 1952-07-29 Improvements in or relating to cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19088/52A GB716268A (en) 1952-07-29 1952-07-29 Improvements in or relating to cameras

Publications (1)

Publication Number Publication Date
GB716268A true GB716268A (en) 1954-09-29

Family

ID=10123584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19088/52A Expired GB716268A (en) 1952-07-29 1952-07-29 Improvements in or relating to cameras

Country Status (1)

Country Link
GB (1) GB716268A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986599A (en) * 1957-03-06 1961-05-30 Betr Slaboratorium Fur Rundfun Electronic viewfinder and focusing arrangement
FR2458188A1 (en) * 1979-05-29 1980-12-26 Victor Company Of Japan VIEWFINDER FOR TELEVISION CAMERA

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986599A (en) * 1957-03-06 1961-05-30 Betr Slaboratorium Fur Rundfun Electronic viewfinder and focusing arrangement
FR2458188A1 (en) * 1979-05-29 1980-12-26 Victor Company Of Japan VIEWFINDER FOR TELEVISION CAMERA

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