GB1287407A - Improvements in or relating to optical systems for colour television cameras - Google Patents

Improvements in or relating to optical systems for colour television cameras

Info

Publication number
GB1287407A
GB1287407A GB57720/68A GB5772068A GB1287407A GB 1287407 A GB1287407 A GB 1287407A GB 57720/68 A GB57720/68 A GB 57720/68A GB 5772068 A GB5772068 A GB 5772068A GB 1287407 A GB1287407 A GB 1287407A
Authority
GB
United Kingdom
Prior art keywords
colour
mirror
beam splitter
reflected
epidiascope
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
GB57720/68A
Inventor
Peter John Pyke
Denis Gordon Perkins
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
Original Assignee
EMI 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 filed Critical EMI Ltd
Priority to GB57720/68A priority Critical patent/GB1287407A/en
Publication of GB1287407A publication Critical patent/GB1287407A/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
    • H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
    • H04N23/13—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with multiple sensors
    • H04N23/16—Optical arrangements associated therewith, e.g. for beam-splitting or for colour correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

1287407 Television EMI Ltd 5 Dec 1969 [5 Dec 1968] 57720/68 Heading H4F In a colour television camera comprising an optical system, e.g. as shown in Specification 1,149,522, wherein a beam splitter divides incoming light into a reflected portion, and a transmitted portion which subsequently is analysed into component colour images for colour pick-up tubes, the reflected light is transmitted towards an epidioscope instead of the normal luminance tube and the beam splitter is reduced in reflectance to about 5%, so that when a mirror is disposed before and facing the optical system, and the epidiascope is operated, e.g. in conjunction with a test chart light therefrom passes back along the system, and is reflected by the mirror, and passed by the beam splitter to the colour pick-up tubes. The mirror may be mounted in a turret together with an optical filler, rotation of the turret causing a switch to operate the epidiascope.
GB57720/68A 1968-12-05 1968-12-05 Improvements in or relating to optical systems for colour television cameras Expired GB1287407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB57720/68A GB1287407A (en) 1968-12-05 1968-12-05 Improvements in or relating to optical systems for colour television cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB57720/68A GB1287407A (en) 1968-12-05 1968-12-05 Improvements in or relating to optical systems for colour television cameras

Publications (1)

Publication Number Publication Date
GB1287407A true GB1287407A (en) 1972-08-31

Family

ID=10479884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57720/68A Expired GB1287407A (en) 1968-12-05 1968-12-05 Improvements in or relating to optical systems for colour television cameras

Country Status (1)

Country Link
GB (1) GB1287407A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327690A1 (en) * 1975-10-09 1977-05-06 Philips Nv TELEVISION CAMERA

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327690A1 (en) * 1975-10-09 1977-05-06 Philips Nv TELEVISION CAMERA

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees