FR2323279A2 - Coloured document reproduction equipment - has thermo-optical system to reproduce simultaneously three chrominance elements of document - Google Patents
Coloured document reproduction equipment - has thermo-optical system to reproduce simultaneously three chrominance elements of documentInfo
- Publication number
- FR2323279A2 FR2323279A2 FR7527328A FR7527328A FR2323279A2 FR 2323279 A2 FR2323279 A2 FR 2323279A2 FR 7527328 A FR7527328 A FR 7527328A FR 7527328 A FR7527328 A FR 7527328A FR 2323279 A2 FR2323279 A2 FR 2323279A2
- Authority
- FR
- France
- Prior art keywords
- document
- thermo
- coloured
- equipment
- optical system
- 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
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
- G02F1/132—Thermal activation of liquid crystals exhibiting a thermo-optic effect
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3164—Modulator illumination systems using multiple light sources
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
An equipment for the thermo-optical projection or reproduction of coloured documents is used to obtain the copy at distance. It provides teleprojection or telereprography of documents. The equipment, produces copies by three stages. The first stage records the three chrominances of the document. The second stage projects the three chrominance pictures onto a receiving surface. The third stage erases the three pictures. The equipment has a laser (10) deflectors (12, 13) and a focal lens (11). It also has three mirrors (141-3) three glass-electrode cells (201-3) and three light bulbs (301-3). The cells are connected to a controller (40) to analyse the picture to be produced. the three components of the picture are projected onto a screen (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7527328A FR2323279A2 (en) | 1975-09-05 | 1975-09-05 | Coloured document reproduction equipment - has thermo-optical system to reproduce simultaneously three chrominance elements of document |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7527328A FR2323279A2 (en) | 1975-09-05 | 1975-09-05 | Coloured document reproduction equipment - has thermo-optical system to reproduce simultaneously three chrominance elements of document |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2323279A2 true FR2323279A2 (en) | 1977-04-01 |
FR2323279B2 FR2323279B2 (en) | 1981-12-31 |
Family
ID=9159676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7527328A Granted FR2323279A2 (en) | 1975-09-05 | 1975-09-05 | Coloured document reproduction equipment - has thermo-optical system to reproduce simultaneously three chrominance elements of document |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2323279A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0258927A2 (en) * | 1986-08-22 | 1988-03-09 | North American Philips Corporation | Display system |
EP0547601A2 (en) * | 1991-12-17 | 1993-06-23 | Texas Instruments Incorporated | Color display system using spatial light modulators |
-
1975
- 1975-09-05 FR FR7527328A patent/FR2323279A2/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0258927A2 (en) * | 1986-08-22 | 1988-03-09 | North American Philips Corporation | Display system |
EP0258927A3 (en) * | 1986-08-22 | 1991-01-09 | North American Philips Corporation | Display system |
EP0547601A2 (en) * | 1991-12-17 | 1993-06-23 | Texas Instruments Incorporated | Color display system using spatial light modulators |
EP0547601A3 (en) * | 1991-12-17 | 1993-10-13 | Texas Instruments Incorporated | Color display system using spatial light modulators |
Also Published As
Publication number | Publication date |
---|---|
FR2323279B2 (en) | 1981-12-31 |
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