GB1094193A - Improvements in or relating to colour television camera arrangements - Google Patents

Improvements in or relating to colour television camera arrangements

Info

Publication number
GB1094193A
GB1094193A GB13440/64A GB1344064A GB1094193A GB 1094193 A GB1094193 A GB 1094193A GB 13440/64 A GB13440/64 A GB 13440/64A GB 1344064 A GB1344064 A GB 1344064A GB 1094193 A GB1094193 A GB 1094193A
Authority
GB
United Kingdom
Prior art keywords
mirror
iris
hole
light
area
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
GB13440/64A
Inventor
Norman Neville Parker Smith
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB13440/64A priority Critical patent/GB1094193A/en
Priority to SE2057/65A priority patent/SE318304B/xx
Priority to NL6503957A priority patent/NL6503957A/xx
Priority to FR11358A priority patent/FR1437709A/en
Priority to DE19651472685 priority patent/DE1472685A1/en
Publication of GB1094193A publication Critical patent/GB1094193A/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
    • 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)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

1,094,193. Colour television camera. MARCONI CO. Ltd. Jan. 25, 1965 [April 1, 1964], No. 13440/64. Heading H4F. In a colour television camera light from a subject of transmission is split into two beams by an apertured mirror 4, the light which passes through the central hole 3 being focused on to a luminance camera 2 and the light which is reflected from the annular mirror 4 being split into at least two component colours (three as shown) by dichroic mirrors 5 and 7 and focused on to colour cameras 6, 8 and 9. The mirror 4 is positioned at 45 degrees to the centre ray of the light passing through hole 3 and the area of the hole is approximately half that of the illuminated area of the annular mirror. The arrangement makes maximum use of the light available from the subject of transmission and relies on the fact that it is possible to employ a relatively low standard of definition in the colour cameras so long as a luminance image of good resolution is produced. In live televizing an iris arrangement, Fig. 2 (not shown), is used to adjust the areas of the hole 3 and annular mirror 4. Such an arrangement is described and claimed in Specification 1,094,194 and comprises a hole of adjustable diameter in an approximately planar mirror-iris and a non- reflecting iris concentric with the mirror iris and covering the mirror surface thereof by an extent determined by the adjustment of the non-reflecting iris, the two irises being gangcontrolled so that in all positions of adjustment the ratio of mirror area of the mirror-iris exposed by the non-reflecting iris, to the area of the hole is of a predetermined value, e.g. 2 to 1.
GB13440/64A 1964-04-01 1964-04-01 Improvements in or relating to colour television camera arrangements Expired GB1094193A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB13440/64A GB1094193A (en) 1964-04-01 1964-04-01 Improvements in or relating to colour television camera arrangements
SE2057/65A SE318304B (en) 1964-04-01 1965-02-17
NL6503957A NL6503957A (en) 1964-04-01 1965-03-29
FR11358A FR1437709A (en) 1964-04-01 1965-03-31 Color television camera arrangements
DE19651472685 DE1472685A1 (en) 1964-04-01 1965-03-31 Color television camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13440/64A GB1094193A (en) 1964-04-01 1964-04-01 Improvements in or relating to colour television camera arrangements

Publications (1)

Publication Number Publication Date
GB1094193A true GB1094193A (en) 1967-12-06

Family

ID=10023027

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13440/64A Expired GB1094193A (en) 1964-04-01 1964-04-01 Improvements in or relating to colour television camera arrangements

Country Status (4)

Country Link
DE (1) DE1472685A1 (en)
GB (1) GB1094193A (en)
NL (1) NL6503957A (en)
SE (1) SE318304B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5534924A (en) * 1991-03-05 1996-07-09 Thomson Broadcast Method and device to obtain an element of information on depth in the field seen by picture-shooting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5534924A (en) * 1991-03-05 1996-07-09 Thomson Broadcast Method and device to obtain an element of information on depth in the field seen by picture-shooting device

Also Published As

Publication number Publication date
DE1472685A1 (en) 1968-12-05
SE318304B (en) 1969-12-08
NL6503957A (en) 1965-10-04

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