GB568981A - Improvements in or relating to optical apparatus - Google Patents

Improvements in or relating to optical apparatus

Info

Publication number
GB568981A
GB568981A GB1699543A GB1699543A GB568981A GB 568981 A GB568981 A GB 568981A GB 1699543 A GB1699543 A GB 1699543A GB 1699543 A GB1699543 A GB 1699543A GB 568981 A GB568981 A GB 568981A
Authority
GB
United Kingdom
Prior art keywords
refractive index
light
bodies
incident
cube
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
GB1699543A
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.)
HORACE WILLIAM LEE
Scophony Ltd
Original Assignee
HORACE WILLIAM LEE
Scophony 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 HORACE WILLIAM LEE, Scophony Ltd filed Critical HORACE WILLIAM LEE
Priority to GB1699543A priority Critical patent/GB568981A/en
Publication of GB568981A publication Critical patent/GB568981A/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
    • G02B27/108—Beam splitting or combining systems for sampling a portion of a beam or combining a small beam in a larger one, e.g. wherein the area ratio or power ratio of the divided beams significantly differs from unity, 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
    • G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

568,981. Light beam dividing apparatus. SCOPHONY, Ltd., ADAMS, A. E., LEE, H. W., JONES, P. L. F., and WIKKENHAUSER, G. Oct. 15, 1943, No. 16995. [Class 97 (i)] A device for dividing a beam of light into two beams in different directions, e.g. at right angles to one another, comprises two solid transparent bodies of substantially the same refractive index, having closely adjacent faces separated from one another by a thin layer of transparent material of a different refractive index, the refractive indices and the angle between the surfaces and the incident beam being such that the major part of an incident beam is transmitted through both bodies while a relatively small part is reflected at the surfaces. One embodiment of the invention comprises two right-angled isosceles triangles of extra dense flint glass having their hypotenuse sides cemented by a thin layer of Canada balsam to form a cube. The major portion of a beam of light incident on the cube is transmitted undeviated, while about ¢ of one per cent is deflected in a direction at right angles to the incident beam. The reflecting layer may be a liquid, colloid or a thermosetting material and should preferably differ in refractive index from the transparent bodies by at least 0.1.
GB1699543A 1943-10-15 1943-10-15 Improvements in or relating to optical apparatus Expired GB568981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1699543A GB568981A (en) 1943-10-15 1943-10-15 Improvements in or relating to optical apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1699543A GB568981A (en) 1943-10-15 1943-10-15 Improvements in or relating to optical apparatus

Publications (1)

Publication Number Publication Date
GB568981A true GB568981A (en) 1945-04-30

Family

ID=10087327

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1699543A Expired GB568981A (en) 1943-10-15 1943-10-15 Improvements in or relating to optical apparatus

Country Status (1)

Country Link
GB (1) GB568981A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273367A (en) * 1992-11-30 1994-06-15 Lanarealm Ltd Optical beam splitter block having refractive index of at least 1-8

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273367A (en) * 1992-11-30 1994-06-15 Lanarealm Ltd Optical beam splitter block having refractive index of at least 1-8

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