EP0169861A1 - Ecran a fibres optiques - Google Patents

Ecran a fibres optiques

Info

Publication number
EP0169861A1
EP0169861A1 EP85900649A EP85900649A EP0169861A1 EP 0169861 A1 EP0169861 A1 EP 0169861A1 EP 85900649 A EP85900649 A EP 85900649A EP 85900649 A EP85900649 A EP 85900649A EP 0169861 A1 EP0169861 A1 EP 0169861A1
Authority
EP
European Patent Office
Prior art keywords
light
optical fibers
optical fiber
flat screen
ring
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Withdrawn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
EP85900649A
Other languages
German (de)
English (en)
Inventor
Heiner Stukenbrock
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0169861A1 publication Critical patent/EP0169861A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only

Definitions

  • the invention relates to an optical fiber flat screen.
  • the object of the invention is to make it possible to use highly efficient semiconductor diode lasers of small design in the infrared range for optical fiber flat screens.
  • a light valve designed as a thin-walled hollow cylinder, is placed directly in front of the light entry ends of the optical fibers.
  • the modulated infrared diode laser beam creates a fine grid of transparent and non-transparent zones in accordance with the image content in the light valve.
  • a projection lamp radiates visible light through the light valve into the optical fibers, which can be provided with color filters at the exit end for the purpose of displaying colors.
  • Smectic liquid crystals or iron garnet are suitable as light valve materials whose transparency for visible light can be surface-modulated by focused infrared laser light.
  • the transparency of a light valve ring arranged before the lig inlet ends is superficially modulated by means of a laser beam deviated by a rotating mirror.
  • the fanned out light exit ends of an optical fiber bundle, the densely packed light entry ends of which are never arranged on a screw are illuminated by a projection lamp, form a flat screen.
  • D Transparency of a light valve ring placed in front of the light entry ends is surface-modulated by a laser beam deflected by means of a rotating mirror. ONLY FOR INFORMATION

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Les extrémités écartées de sortie de lumière d'un faisceau de fibres optiques, dont les extrémités d'entrée de lumière serrées et disposées sur une ligne hélicoïdale sont illuminées par une lampe de projection, forment un écran plat. La transparence d'un anneau de soupape de lumière placé avant les extrémités d'entrée de lumière est modulée superficiellement au moyen d'un rayon laser dévié par un miroir tournant.
EP85900649A 1984-01-30 1985-01-29 Ecran a fibres optiques Withdrawn EP0169861A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3403057 1984-01-30
DE3403057 1984-01-30

Publications (1)

Publication Number Publication Date
EP0169861A1 true EP0169861A1 (fr) 1986-02-05

Family

ID=6226232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85900649A Withdrawn EP0169861A1 (fr) 1984-01-30 1985-01-29 Ecran a fibres optiques

Country Status (4)

Country Link
EP (1) EP0169861A1 (fr)
JP (1) JPS61501595A (fr)
AU (1) AU3931485A (fr)
WO (1) WO1985003397A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU680265B2 (en) * 1993-08-18 1997-07-24 Ramasoft3 Pty Limited Optical fibre flat screen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936871A (en) * 1974-05-16 1976-02-03 The United States Of America As Represented By The Secretary Of The Navy Multi-wavelength display system
DE2548589A1 (de) * 1975-10-30 1977-05-05 Heiner Ing Grad Stukenbrock Bildschirm

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8503397A2 *

Also Published As

Publication number Publication date
WO1985003397A2 (fr) 1985-08-01
JPS61501595A (ja) 1986-07-31
AU3931485A (en) 1985-08-09
WO1985003397A3 (fr) 1985-09-12

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19860513