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FR2334255A1 - Stereoscopic viewing spectacles with varying lens transmission - has each lens comprising cell with light transmission varied in accordance with applied voltage - Google Patents

Stereoscopic viewing spectacles with varying lens transmission - has each lens comprising cell with light transmission varied in accordance with applied voltage

Info

Publication number
FR2334255A1
FR2334255A1 FR7622647A FR7622647A FR2334255A1 FR 2334255 A1 FR2334255 A1 FR 2334255A1 FR 7622647 A FR7622647 A FR 7622647A FR 7622647 A FR7622647 A FR 7622647A FR 2334255 A1 FR2334255 A1 FR 2334255A1
Authority
FR
France
Prior art keywords
lens
cell
light transmission
transmission
stereoscopic viewing
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.)
Granted
Application number
FR7622647A
Other languages
French (fr)
Other versions
FR2334255B3 (en
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.)
EMI Group Ltd
Original Assignee
Thorn 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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Publication of FR2334255A1 publication Critical patent/FR2334255A1/en
Application granted granted Critical
Publication of FR2334255B3 publication Critical patent/FR2334255B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/207—Image signal generators using stereoscopic image cameras using a single 2D image sensor
    • H04N13/211—Image signal generators using stereoscopic image cameras using a single 2D image sensor using temporal multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Liquid Crystal (AREA)
  • Eyeglasses (AREA)

Abstract

The stereoscopic viewing spectacles, to give a two- dimensional image the appearance of a three-dimensional object, has each lens (11) formed by a cell with a crystal positioned between two transparent electrodes. The cell responds to a control voltage applied between the electrodes to vary the light transmission characteristic. The frames of the spectacles have elements(16) for providing periodic alternating voltages for the control electrodes of the respective cells, such that the light transmission through the lenses (11) is varied differentially at 25 cycles per second. Pref. each crystal is a spiral nematic crystal, each cell positioned between two optical polarisers.
FR7622647A 1975-07-23 1976-07-23 Stereoscopic viewing spectacles with varying lens transmission - has each lens comprising cell with light transmission varied in accordance with applied voltage Granted FR2334255A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3085775 1975-07-23

Publications (2)

Publication Number Publication Date
FR2334255A1 true FR2334255A1 (en) 1977-07-01
FR2334255B3 FR2334255B3 (en) 1979-04-13

Family

ID=10314221

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7622647A Granted FR2334255A1 (en) 1975-07-23 1976-07-23 Stereoscopic viewing spectacles with varying lens transmission - has each lens comprising cell with light transmission varied in accordance with applied voltage

Country Status (8)

Country Link
JP (1) JPS5217839A (en)
BE (1) BE844321A (en)
DE (1) DE2632483A1 (en)
DK (1) DK334176A (en)
FR (1) FR2334255A1 (en)
IT (1) IT1067387B (en)
LU (1) LU75436A1 (en)
NL (1) NL7608087A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000825A1 (en) * 1982-08-09 1984-03-01 Kisuezemi Innovacios Iroda Method of recording and reproducing visual information for three-dimensional reproduction, apparata for recording and reproducing three-dimensional pictures

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155917A (en) * 1980-05-06 1981-12-02 Matsushita Electric Ind Co Ltd Three-dimensional video reproducer
DE3214021A1 (en) * 1982-04-16 1983-10-20 Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten Device for generating and representing three-dimensional images
JPS59190788A (en) * 1983-04-13 1984-10-29 Fuotoron:Kk Stereoscopic television receiver
CA1241419A (en) * 1983-08-26 1988-08-30 Paul Milgram Apparatus for influencing the presentation of visual information
FR2569281B1 (en) * 1984-08-16 1986-12-05 France Etat Armement SELF-CONTAINED SUPPLY DEVICE FOR AN OBSERVATION DEVICE, PARTICULARLY WITH A STEREOSCOPIC EFFECT
DE3829011A1 (en) * 1988-08-26 1990-03-08 Fraunhofer Ges Forschung Device for producing and presenting in particular three-dimensional pictures (images)
SE467324B (en) * 1990-10-10 1992-06-29 Gabriel Daniel Dorobantu OPTICAL DEVICE, EXAMPLE IN THE FORM OF 3D GLASSOEGON, WHICH USED A THREE-DIMENSIONAL ILLUSION CAN BE RECEIVED FROM A TWO-DIMENSIONAL IMAGE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000825A1 (en) * 1982-08-09 1984-03-01 Kisuezemi Innovacios Iroda Method of recording and reproducing visual information for three-dimensional reproduction, apparata for recording and reproducing three-dimensional pictures

Also Published As

Publication number Publication date
IT1067387B (en) 1985-03-16
NL7608087A (en) 1977-01-25
DK334176A (en) 1977-01-24
DE2632483A1 (en) 1977-02-10
BE844321A (en) 1976-11-16
FR2334255B3 (en) 1979-04-13
LU75436A1 (en) 1977-03-01
JPS5217839A (en) 1977-02-10

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Legal Events

Date Code Title Description
ST Notification of lapse