GB503222A - Improvements in light-dividing prism systems for colour photography or the like - Google Patents

Improvements in light-dividing prism systems for colour photography or the like

Info

Publication number
GB503222A
GB503222A GB2403937A GB2403937A GB503222A GB 503222 A GB503222 A GB 503222A GB 2403937 A GB2403937 A GB 2403937A GB 2403937 A GB2403937 A GB 2403937A GB 503222 A GB503222 A GB 503222A
Authority
GB
United Kingdom
Prior art keywords
rays
light
colour photography
angles
reflecting
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
GB2403937A
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.)
COLORTONE CORP
Original Assignee
COLORTONE CORP
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 COLORTONE CORP filed Critical COLORTONE CORP
Priority to GB2403937A priority Critical patent/GB503222A/en
Publication of GB503222A publication Critical patent/GB503222A/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
    • G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

503,222. Colour photography. TATE, F. R. (Colortone Corporation) Sept. 2, 1937, No. 24039. [Class 97 (i)] In a light-dividing system for colour photography, comprising a compound prism block 11 having two internal semi-reflecting surfaces 17, 18, and laterally-disposed reflecting-prisms 15, 13 receiving the rays reflected by the surfaces 17, 18 respectively, so that the system produces three parallel beams of emergent rays the surfaces 17, 18, and the reflecting surfaces 13a, 15a of the prisms 13, 15, are inclined to the axis of the system at such angles, less than 44‹ 58<1>, that all rays in each convergent cone of light from any point in a field of view whose image is obtained, are incident upon the surfaces 13a, 15a at angles greater than the critical angles of total reflection for the glass used. The inclinations of these surfaces depend on the maximum angle of the said cone of rays and may be as little as 36‹ for rays whose angle of incidence on the surface 10 is as much as 15‹. The lateral rays pass through glass blocks 14, 16 to ensure that all three images are co-planar. Filters 22, 23, 24 are provided on the exit surfaces of the system. To prevent the passage of unwanted rays, the system may be provided with screens 25, 26, 27, 29, 30, 31.
GB2403937A 1937-09-02 1937-09-02 Improvements in light-dividing prism systems for colour photography or the like Expired GB503222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2403937A GB503222A (en) 1937-09-02 1937-09-02 Improvements in light-dividing prism systems for colour photography or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2403937A GB503222A (en) 1937-09-02 1937-09-02 Improvements in light-dividing prism systems for colour photography or the like

Publications (1)

Publication Number Publication Date
GB503222A true GB503222A (en) 1939-04-03

Family

ID=10205402

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2403937A Expired GB503222A (en) 1937-09-02 1937-09-02 Improvements in light-dividing prism systems for colour photography or the like

Country Status (1)

Country Link
GB (1) GB503222A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502392A (en) * 1945-05-22 1950-03-28 Hooker Electrochemical Co Fluids for hydraulic and dielectric uses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502392A (en) * 1945-05-22 1950-03-28 Hooker Electrochemical Co Fluids for hydraulic and dielectric uses

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