FR2263569A1 - Character display apparatus with two electrode systems - has light beam directed at one of two fluid-crystal cell walls - Google Patents

Character display apparatus with two electrode systems - has light beam directed at one of two fluid-crystal cell walls

Info

Publication number
FR2263569A1
FR2263569A1 FR7407645A FR7407645A FR2263569A1 FR 2263569 A1 FR2263569 A1 FR 2263569A1 FR 7407645 A FR7407645 A FR 7407645A FR 7407645 A FR7407645 A FR 7407645A FR 2263569 A1 FR2263569 A1 FR 2263569A1
Authority
FR
France
Prior art keywords
light beam
crystal cell
fluid
display apparatus
character display
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
FR7407645A
Other languages
French (fr)
Other versions
FR2263569B1 (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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7407645A priority Critical patent/FR2263569A1/en
Priority to CH253375A priority patent/CH591095A5/xx
Priority to JP50027585A priority patent/JPS50155193A/ja
Priority to DE19752509867 priority patent/DE2509867A1/en
Publication of FR2263569A1 publication Critical patent/FR2263569A1/en
Application granted granted Critical
Publication of FR2263569B1 publication Critical patent/FR2263569B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1393—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching

Abstract

The angle of incidence of the light beam is inclined in relation to the boundary surface between the first fluid crystal cell wall and the fluid crystal film, so that this angle is smaller than the limiting angle in the case of the first potential difference, the light beam penetrating the film after diffraction, and greater than the limiting angle in the case of the second potential difference, the light beam undergoing total reflection on the boundary surface. There is also a projection screen which is arranged on any one of the diffracted and reflected paths followed by the lith beam.
FR7407645A 1974-03-06 1974-03-06 Character display apparatus with two electrode systems - has light beam directed at one of two fluid-crystal cell walls Granted FR2263569A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7407645A FR2263569A1 (en) 1974-03-06 1974-03-06 Character display apparatus with two electrode systems - has light beam directed at one of two fluid-crystal cell walls
CH253375A CH591095A5 (en) 1974-03-06 1975-02-28
JP50027585A JPS50155193A (en) 1974-03-06 1975-03-06
DE19752509867 DE2509867A1 (en) 1974-03-06 1975-03-06 DEVICE FOR DISPLAYING SIGNS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7407645A FR2263569A1 (en) 1974-03-06 1974-03-06 Character display apparatus with two electrode systems - has light beam directed at one of two fluid-crystal cell walls

Publications (2)

Publication Number Publication Date
FR2263569A1 true FR2263569A1 (en) 1975-10-03
FR2263569B1 FR2263569B1 (en) 1977-09-23

Family

ID=9135934

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407645A Granted FR2263569A1 (en) 1974-03-06 1974-03-06 Character display apparatus with two electrode systems - has light beam directed at one of two fluid-crystal cell walls

Country Status (4)

Country Link
JP (1) JPS50155193A (en)
CH (1) CH591095A5 (en)
DE (1) DE2509867A1 (en)
FR (1) FR2263569A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350621A1 (en) * 1976-05-04 1977-12-02 Itt Nematic liq. crystal display cell - comprises film of liq. crystal between two electrodes and solid, transparent material covering one surface
EP0015139A1 (en) * 1979-02-21 1980-09-03 Sperry Corporation Electro-optical switching matrix
EP0377498A2 (en) * 1989-01-03 1990-07-11 Raytheon Company Deflector for an optical beam including refractive means

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023741A1 (en) * 1979-08-02 1981-02-11 Koninklijke Philips Electronics N.V. Electrophoretic image display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350621A1 (en) * 1976-05-04 1977-12-02 Itt Nematic liq. crystal display cell - comprises film of liq. crystal between two electrodes and solid, transparent material covering one surface
EP0015139A1 (en) * 1979-02-21 1980-09-03 Sperry Corporation Electro-optical switching matrix
EP0377498A2 (en) * 1989-01-03 1990-07-11 Raytheon Company Deflector for an optical beam including refractive means
EP0377498A3 (en) * 1989-01-03 1991-05-02 Raytheon Company Deflector for an optical beam including refractive means

Also Published As

Publication number Publication date
CH591095A5 (en) 1977-09-15
FR2263569B1 (en) 1977-09-23
DE2509867A1 (en) 1975-09-11
JPS50155193A (en) 1975-12-15

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Legal Events

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