GB1080563A - Improvements relating to beam splitting optical systems - Google Patents

Improvements relating to beam splitting optical systems

Info

Publication number
GB1080563A
GB1080563A GB7646/64A GB764664A GB1080563A GB 1080563 A GB1080563 A GB 1080563A GB 7646/64 A GB7646/64 A GB 7646/64A GB 764664 A GB764664 A GB 764664A GB 1080563 A GB1080563 A GB 1080563A
Authority
GB
United Kingdom
Prior art keywords
mirror
image
aperture
transmission
lens
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
GB7646/64A
Inventor
Irederick George Humph Elphick
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
Priority to GB1711/63A priority Critical patent/GB1076571A/en
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB7646/64A priority patent/GB1080563A/en
Publication of GB1080563A publication Critical patent/GB1080563A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/1013—Beam splitting or combining systems for splitting or combining different wavelengths for colour or multispectral image sensors, e.g. splitting an image into monochromatic image components on respective sensors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/143—Beam splitting or combining systems operating by reflection only using macroscopically faceted or segmented reflective surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Image Signal Generators (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

1,080,563. Colour television cameras. ELECTRIC & MUSICAL INDUSTRIES Ltd. Feb. 24, 1964 [Feb. 23, 1963], No. 7646/64. Divided out of 1,076,571. Heading H4F. [Also in Division G2] An optical system for use in a colour television camera comprises a primary lens 5, a mirror 6 which splits a beam emergent from said lens into a transmitted beam and a reflected beam, and an adjustable aperture 18 effective on one of the latter beams, the transmission to reflection ratio of the mirror 6 being varied from the centre of the mirror to the periphery thereof so that the light transmitted through the aperture 18 depends on the size of the aperture to a smaller extent than if the mirror had a constant uniform transmission to reflection ratio. In a modification, the transmission to reflection ratio of the mirror 6 is varied with adjustment of the aperture 18. The mirror 6 is positioned adjacent the exit aperture of the primary lens 8. The beam reflected therefrom passes through an adjustable diaphragm to form an image I 1 on a photo-cathode 1, this image being translated into a luminance signal. The image I 2 formed by the transmitted beam is transferred to the targets 2, 3, 4 of three vidicons by a transfer lens 8 and two dichroic mirrors 9, 10. The mirror 6 may be provided with a greater reflection to transmission ratio at its centre so that the majority of light in the axial rays emerging from the lens 5 goes to form the image I 1 , and so that most of the light in the annular rays goes to form the image I 2 , The roles of the reflected and transmitted beams may be reversed when the variation of the reflection to transmission ratio of the mirror will also be reversed.
GB7646/64A 1963-02-23 1963-02-23 Improvements relating to beam splitting optical systems Expired GB1080563A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1711/63A GB1076571A (en) 1963-02-23 1963-01-15 Improvements relating to colour television cameras
GB7646/64A GB1080563A (en) 1963-02-23 1963-02-23 Improvements relating to beam splitting optical systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7646/64A GB1080563A (en) 1963-02-23 1963-02-23 Improvements relating to beam splitting optical systems

Publications (1)

Publication Number Publication Date
GB1080563A true GB1080563A (en) 1967-08-23

Family

ID=9837099

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1711/63A Expired GB1076571A (en) 1963-02-23 1963-01-15 Improvements relating to colour television cameras
GB7646/64A Expired GB1080563A (en) 1963-02-23 1963-02-23 Improvements relating to beam splitting optical systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1711/63A Expired GB1076571A (en) 1963-02-23 1963-01-15 Improvements relating to colour television cameras

Country Status (1)

Country Link
GB (2) GB1076571A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2023338A1 (en) * 1968-11-14 1970-08-21 Marconi Co Ltd
GB2214145A (en) * 1988-02-22 1989-08-31 Ian Sydney Crawford Rear-view mirror having non-reflective portions

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814866A (en) * 1987-03-04 1989-03-21 Mcdonnell Douglas Corporation Schlieren color television image aperturing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2023338A1 (en) * 1968-11-14 1970-08-21 Marconi Co Ltd
GB2214145A (en) * 1988-02-22 1989-08-31 Ian Sydney Crawford Rear-view mirror having non-reflective portions

Also Published As

Publication number Publication date
GB1076571A (en) 1967-07-19

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