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EP0514083A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Display system

Assignee: Victor Company of Japan Ltd
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Filing: 1992-05-07
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Granted: —
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Expires: 2012-05-07
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Abstract

Abstract The present invention offers a display system for displaying information comprising a linear array of N light-emitting devices emitting light of predetermined wavelength, the devices are arranged respectively with N pixels, a stream of the information is divided into pieces each of which containing the N pixels, and the N light-emitting devices are caused to emit N light beams simultaneously in a form of array during a given period for every divided piece of the information, the every divided piece of information may correspond to one line of a frame of picture, the N light beams are intensity-modulated respectively with the divided piece of the information, the N light beams are deflected simultaneously in a direction perpendicular to a direction of the array of the N light beams, and a spatial light modulator having a photo-conductive layer and a light modulation layer interposed between a pair of electrodes, the photoconductive layer is responsive to the deflected N light beams incident thereto through a focusing lens as a writing light, and a reading light of visible wavelength which is shorter than the predetermined wavelength of the emitted light from the linear array of the N light-emitting devices, the reading light irradiates the photomodulation layer of the spatial light modulator to read out and display the written information thereon.

Inventors

  • 👤 Toshio Konno
  • 👤 Shintaro Nakagaki
  • 👤 Ichiro Negishi
  • 👤 Tetsuji Suzuki
  • 👤 Fujiko Tatsumi
  • 👤 Ryusaku Takahashi
  • 👤 Keiichi Maeno

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 16:01
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/001; G09G3/002; G09G3/02

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 238 words
A display system for displaying information comprising: a linear array of N light-emitting devices emitting light of a predetermined wavelength, the N light-emitting devices being arranged correspondingly with N pixels, a stream of the information being divided into pieces each of which containing the N pixels; means for causing the N light-emitting devices to simultaneously emit N light beams in a form of array during a given period for every piece of the information, the N light beams being intensity-modulated respectively with a divided piece of the information; deflecting means for deflecting the N light beams simultaneously in a direction perpendicular to a direction of the array of the N light beams; a spatial light modulator having a photoconductive layer and a photomodulation layer interposed between two electrodes, the photoconductive layer being made of a photoconductive material that sensitively responds to an incidental light emitted from the linear array of the N light-emitting devices and deflected by said deflecting means ; focusing means which focuses the N light beams deflected by said deflecting means as writing light onto the photoconductive layer of the spatial light modulator; and means for irradiating the photomodulation layer of the spatial light modulator with a reading light of visible wavelength which is shorter than said predetermined wavelength of the light emitted from the linear array of the N light-emitting devices for reading out and displaying the information written on the spatial light modulator.
Claim 2
Dependent Claim 28 words
The display system of claim 1, wherein the light modulation layer of the spatial light modulator comprises a homeotropically oriented liquid crystal having an electrically controlled birefringence effect.

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