GB327669A - Method of and means for cinematographic projection - Google Patents

Method of and means for cinematographic projection

Info

Publication number
GB327669A
GB327669A GB478330A GB478330A GB327669A GB 327669 A GB327669 A GB 327669A GB 478330 A GB478330 A GB 478330A GB 478330 A GB478330 A GB 478330A GB 327669 A GB327669 A GB 327669A
Authority
GB
United Kingdom
Prior art keywords
lens
prisms
systems
plano
projection
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
GB478330A
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.)
ERWIN WEISSENSTEIN
HYMAN HARRY SMITH
JOSEPH LECKER
Original Assignee
ERWIN WEISSENSTEIN
HYMAN HARRY SMITH
JOSEPH LECKER
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 ERWIN WEISSENSTEIN, HYMAN HARRY SMITH, JOSEPH LECKER filed Critical ERWIN WEISSENSTEIN
Priority to GB478330A priority Critical patent/GB327669A/en
Publication of GB327669A publication Critical patent/GB327669A/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
    • G02B27/14—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

327,669. Boris, B., (known as Allen, B.), Lecker, J., Smith, H. H., and Weissenstein, E. May 3, 1929. Divided on 327,023. Optical-projection systems.-Two right-angled prisms 9 are arranged as close as possible to the front of the lens 10 of a kinematograph projector, with their reflecting surfaces forming a rightangle and intersecting on the axis of the lens, to divide and reflect the beam to two other and, preferably, larger prisms 11 having reflecting surfaces parallel to those of the prisms 9, and lens systems with axes substantially parallel to the axis of the projection lens, are arranged in front of the prisms 11; the whole combination produces duplicate projected images which may be superposed on a single screen, or may be focussed upon different members of a composite screen of the type described in Specification 327,023. The lens systems may each comprise a plano-convex lens 12 and a concavo-plano lens 13, and the lenses before one or each of the prisms may be adjustable towards and from one another.
GB478330A 1929-05-03 1929-05-03 Method of and means for cinematographic projection Expired GB327669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB478330A GB327669A (en) 1929-05-03 1929-05-03 Method of and means for cinematographic projection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB478330A GB327669A (en) 1929-05-03 1929-05-03 Method of and means for cinematographic projection

Publications (1)

Publication Number Publication Date
GB327669A true GB327669A (en) 1930-04-10

Family

ID=9783718

Family Applications (1)

Application Number Title Priority Date Filing Date
GB478330A Expired GB327669A (en) 1929-05-03 1929-05-03 Method of and means for cinematographic projection

Country Status (1)

Country Link
GB (1) GB327669A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0225721A1 (en) * 1985-11-08 1987-06-16 BRITISH TELECOMMUNICATIONS public limited company Camera optics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0225721A1 (en) * 1985-11-08 1987-06-16 BRITISH TELECOMMUNICATIONS public limited company Camera optics
US4750810A (en) * 1985-11-08 1988-06-14 British Telecommunications Plc Camera optics for producing a composite image from two scenes

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