GB789597A - Improvements relating to optical apparatus for obtaining polarised light - Google Patents

Improvements relating to optical apparatus for obtaining polarised light

Info

Publication number
GB789597A
GB789597A GB2729554A GB2729554A GB789597A GB 789597 A GB789597 A GB 789597A GB 2729554 A GB2729554 A GB 2729554A GB 2729554 A GB2729554 A GB 2729554A GB 789597 A GB789597 A GB 789597A
Authority
GB
United Kingdom
Prior art keywords
polarizing
plane polarized
reflection
layers
transmitted beam
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
GB2729554A
Inventor
James Dyson
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2729554A priority Critical patent/GB789597A/en
Publication of GB789597A publication Critical patent/GB789597A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3066—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state involving the reflection of light at a particular angle of incidence, e.g. Brewster's angle
    • 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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

789,597. Polarizingapparatus. ASSOCIATED ELECTRICAL INDUSTRIES, - Ltd. Sept. 21, 1955 [Sept. 21, 1954], No. 27295/54. Class 97(1) The first reflection of unpolarized incident light at the polarizing angle on.a first surface gives rise to a first plane polarized reflected beam and the partially plane polarized transmitted beam is reflected at the polarizing angle on another surface to give a second plane polarized reflected beam having its plane of polarization perpendicular to that of the first and a transmitted beam which is absorbed. Plane polarized beams II and III are thus obtained from unpolarized beam I by polarizing reflections at 5 and 8 and total reflections at 6 and 7. Preferably, an interference filter is provided at the first polarizing reflection interface 5 and this may consist. of superimposed layers of alternately high and low refractive index, each layer having a thickness equivalent to one quarter of the wavelength of the light used. Alternate layers may have the same refractive index and the filter may consist of two layers of zinc sulphide and one of silica. The transmitted beam from the second polarizing reflection at 8 is absorbed in a plate 4 of black glass which is cemented to the side of rhomboidal prism 3, the apparatus further consisting of a rhomboidal prism 1 and a triangular prism 2. The emergent beams II and III are parallel.
GB2729554A 1954-09-21 1954-09-21 Improvements relating to optical apparatus for obtaining polarised light Expired GB789597A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2729554A GB789597A (en) 1954-09-21 1954-09-21 Improvements relating to optical apparatus for obtaining polarised light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2729554A GB789597A (en) 1954-09-21 1954-09-21 Improvements relating to optical apparatus for obtaining polarised light

Publications (1)

Publication Number Publication Date
GB789597A true GB789597A (en) 1958-01-22

Family

ID=10257257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2729554A Expired GB789597A (en) 1954-09-21 1954-09-21 Improvements relating to optical apparatus for obtaining polarised light

Country Status (1)

Country Link
GB (1) GB789597A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050693A1 (en) * 1998-03-31 1999-10-07 Corning Incorporated Inorganic visible light reflection polarizer
WO2016054206A1 (en) * 2014-09-30 2016-04-07 Li-Cor, Inc. Laser beam stop elements and spectroscopy systems including the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050693A1 (en) * 1998-03-31 1999-10-07 Corning Incorporated Inorganic visible light reflection polarizer
US6654168B1 (en) 1998-03-31 2003-11-25 Corning Incorporated Inorganic visible light reflection polarizer
WO2016054206A1 (en) * 2014-09-30 2016-04-07 Li-Cor, Inc. Laser beam stop elements and spectroscopy systems including the same
US9759655B2 (en) 2014-09-30 2017-09-12 Li-Cor, Inc. Laser beam stop elements and spectroscopy systems including the same

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