FR2257922A1 - Method of forming multiple visual images - has transmitting and reflecting sheet in image beam path - Google Patents

Method of forming multiple visual images - has transmitting and reflecting sheet in image beam path

Info

Publication number
FR2257922A1
FR2257922A1 FR7401207A FR7401207A FR2257922A1 FR 2257922 A1 FR2257922 A1 FR 2257922A1 FR 7401207 A FR7401207 A FR 7401207A FR 7401207 A FR7401207 A FR 7401207A FR 2257922 A1 FR2257922 A1 FR 2257922A1
Authority
FR
France
Prior art keywords
visual images
transmitting
images
image
beam path
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.)
Withdrawn
Application number
FR7401207A
Other languages
French (fr)
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.)
PERSONNET
Original Assignee
PERSONNET
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 PERSONNET filed Critical PERSONNET
Priority to FR7401207A priority Critical patent/FR2257922A1/en
Publication of FR2257922A1 publication Critical patent/FR2257922A1/en
Withdrawn legal-status Critical Current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
    • G02B27/1066—Beam splitting or combining systems for enhancing image performance, like resolution, pixel numbers, dual magnifications or dynamic range, by tiling, slicing or overlapping fields of view
    • 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
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

A method is described whereby multi-visual images may be projected from a single source on to one or several screens. The technique uses a thin transparent sheet of material (2), with parallel faces, interposed in the light beam (1) from a cine or still projector. One image is transmitted directly through the sheet on to one screen (3) and a symmetrical image is reflected along a path (4) on to another screen (5). Several of the sheets may be placed in the light path to obtain several images on a corresponding number of screens. Variation of the angle (ALPHA) allows trick effects and variation of angle (BETA) allows changing images to be produced. Uses include all kinds of image projection and illuminated advertisements.
FR7401207A 1974-01-14 1974-01-14 Method of forming multiple visual images - has transmitting and reflecting sheet in image beam path Withdrawn FR2257922A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7401207A FR2257922A1 (en) 1974-01-14 1974-01-14 Method of forming multiple visual images - has transmitting and reflecting sheet in image beam path

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7401207A FR2257922A1 (en) 1974-01-14 1974-01-14 Method of forming multiple visual images - has transmitting and reflecting sheet in image beam path

Publications (1)

Publication Number Publication Date
FR2257922A1 true FR2257922A1 (en) 1975-08-08

Family

ID=9133455

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7401207A Withdrawn FR2257922A1 (en) 1974-01-14 1974-01-14 Method of forming multiple visual images - has transmitting and reflecting sheet in image beam path

Country Status (1)

Country Link
FR (1) FR2257922A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683161A (en) * 1995-05-25 1997-11-04 Minolta Co., Ltd. Projecting optical device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683161A (en) * 1995-05-25 1997-11-04 Minolta Co., Ltd. Projecting optical device

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Legal Events

Date Code Title Description
ST Notification of lapse