EP2941672A1 - Systeme de signalisation holographique comprenant une unite de generation d'au moins une image holographique - Google Patents
Systeme de signalisation holographique comprenant une unite de generation d'au moins une image holographiqueInfo
- Publication number
- EP2941672A1 EP2941672A1 EP13814887.9A EP13814887A EP2941672A1 EP 2941672 A1 EP2941672 A1 EP 2941672A1 EP 13814887 A EP13814887 A EP 13814887A EP 2941672 A1 EP2941672 A1 EP 2941672A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holographic
- light
- guide plate
- light guide
- plate
- 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- Withdrawn
Links
- 230000011664 signaling Effects 0.000 title claims abstract description 25
- 230000001427 coherent effect Effects 0.000 claims abstract description 5
- 238000005516 engineering process Methods 0.000 claims description 11
- 239000013307 optical fiber Substances 0.000 claims description 6
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 238000002513 implantation Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000005693 optoelectronics Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 241001311547 Patina Species 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002082 metal nanoparticle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2286—Particular reconstruction light ; Beam properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/525—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data
- B60Q1/535—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data to prevent rear-end collisions, e.g. by indicating safety distance at the rear of the vehicle
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/0402—Recording geometries or arrangements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/0402—Recording geometries or arrangements
- G03H1/0408—Total internal reflection [TIR] holograms, e.g. edge lit or substrate mode holograms
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0028—Light guide, e.g. taper
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2223/00—Optical components
- G03H2223/16—Optical waveguide, e.g. optical fibre, rod
Definitions
- the present invention relates to a holographic signaling system comprising a unit for generating at least one holographic image, to perform a signal that can be seen by an observer.
- this holographic system is adapted to the signaling issued from a vehicle carrying the system, for the attention of the driver occupying a vehicle that follows the carrier vehicle.
- the object of the present invention is in particular to improve the systems of the prior art or to propose an alternative solution to the known systems.
- the object of the invention is a signaling system comprising a unit for generating at least one holographic image for performing a signaling that can be seen by an observer.
- the holographic image generation unit comprises a support, a light guide plate and a translucent holographic stage, the light guide plate being on the one hand interposed between the support and the plate and on the other hand connected to a light inlet so that the light arriving through said inlet enters said plate by its edge.
- the light guide plate makes it possible to let the light go out at a fixed angle by illuminating the holographic plate that makes it possible to generate the holographic image.
- the light guide plate is plasmonic technology;
- ⁇ The light guide plate is dielectric networks;
- the light input is connected to a laser source, the light input being connectable to the laser source by an optical fiber;
- the thickness of the light guide plate is substantially between 1 millimeter and 4 millimeters;
- the cumulative thickness of the support, the light guide plate and the holographic plate of the unit is less than 1 centimeter;
- the light guide plate is shaped to illuminate the holographic plate over its entire surface by a beam of light of uniform intensity.
- the invention also relates to a motor vehicle comprising on the one hand a body with visible parts of the outside of the vehicle and on the other hand a signaling system comprising a generating unit of at least a holographic image to make a signage that can be seen by an observer.
- the system is in accordance with the invention having its holographic image generation unit associated with one of the parts of the bodywork.
- the body portion is a body panel portion to a rear face of the vehicle.
- FIG. 1 is a schematic perspective side view of a signaling system according to the invention
- FIG. 2 is a view of the type of FIG. 1 for a variant of the system according to the invention.
- Figure 3 is a schematic perspective view of three quarters rear and top of a vehicle equipped with said variant of the system according to the invention.
- the reference 1 0 designates a signaling system according to the invention.
- This system is for example intended to equip a carrier vehicle for signaling to an observer.
- the observer is in the carrier vehicle or is an occupant of another vehicle located behind the carrier vehicle.
- the signaling system 1 0 comprises a unit 1 2 for generating at least one holographic image 1 3 likely to constitute the signaling.
- the unit 1 2 of holographic image generation ( Figure 1) comprises a support 14, a light guide plate 1 6 integral with the support and a holographic plate 1 8 which is translucent and is integral with the guide plate light.
- the direction designated as longitudinal corresponds to the direction perpendicular to the plate and the plate.
- a light source 20 supplies light 20L to the holographic image generation unit 12, this light 20L being a laser beam.
- the support 14 is flat and it may have flanges to fix between them the plate 1 6 and the plate 1 8 and the light source 20. It may for example be installed on a part of the automobile body as a panel or other equivalent bodywork component visible from outside the vehicle.
- a light inlet 22 is provided on the edge 16T of the light guide plate 16, downstream of the light source 20, so that the light 20L arriving through said inlet 22 enters said plate by its edge 16T.
- the light input 22 is directly connected to the light source 20.
- the light guide plate 16 makes the light go out in the plate 18 at a fixed angle A, for example 56 degrees relative to the longitudinal direction.
- the light guide plate has the property of providing a coherent beam, collimated and with said fixed angle to the holographic plate.
- the holographic plate 18 is translucent and allows to generate, from the light emerging from the light guide plate, a beam 18H out of said platen and determining the holographic image 13 visible by the observer.
- the holographic plate 18 has a protection vis-à-vis the external environment, for example by a polymer film.
- the support may, for example with its not shown edges, also act as a protective element, particularly with respect to moisture, for the holographic patina 18 forming with the outer protection a sealed assembly.
- the cumulative thickness of the support 14, the light guide plate 16 and the holographic plate 18 of the unit 12 is less than a few centimeters, for example of the order of 1 centimeter or less than a 1 centimeter.
- the thickness of the light guide plate 16 is substantially 3 millimeters. More generally, the thickness of the light guide plate 16 is of the order of 1 millimeter to a few millimeters, for example being substantially between 1 millimeter and 4 millimeters. Thickness values can be for example 20% larger or 20% smaller.
- the whole of this hologram rendering system is more compact, because it is thinner than it would be if it included optical devices such as lenses and a mirror, instead of the light guide plate 16
- optical devices such as lenses and a mirror
- the light guide plate 16 serves as a restitution device.
- the light guide plate 16 must illuminate the holographic plate 18 over its entire surface by a light beam of uniform intensity, the width and the length of the plate 16 and the plate 18 being substantially identical.
- This beam is coherent with its light waves having the same phase, collimated with its parallel rays, monochromatic with its rays having a single wavelength, for example at 633 nanometers, and with a precise angle (for example 56 ° degrees in l air) relative to the normal of the holographic plate.
- the luminance at the input of the holographic stage must be sufficient, for example of the order of 3000 cd / m 2 to satisfy the regulation in the case of automobile signaling.
- the light guide plate 16 is illuminated by its edge 16T by the laser source 20L 20L and the light comes out of the light guide plate at the fixed angle by being coherent, monochromatic, collimated and of identical width to the holographic plate 18 of the unit 1 1 for generating the holographic image.
- optoelectronic technology allows in particular the implementation of guided optical technologies and the use of plasmonic resonance (plasmon) for the distribution, the light guidance and the phase control of the light waves.
- the reduction of the light from the laser source can be obtained off and / or in the light guide plate using an optical demultiplexer which is of known type.
- the optoelectronic devices implemented within the light guide plate may also comprise a light re-amplification to compensate for the losses due to the light guide, this re-amplification may for example be similar to that of lasers.
- the system 10 makes it possible to propose a new architecture for the relief image display system.
- the new architecture is based on the use in unit 12 of optoelectronic and plasmonic technologies.
- the thickness of the plate 16 does not exceed a few millimeters.
- the thickness of the system is reduced to facilitate its implementation in various environments. Such an implantation corresponds for example to a surface integration of an automobile body.
- the plasmonic technology proposed for the light guide plate 16 is already known for example for guiding light in telecommunication optical fibers or for ultra-fast photo-detectors. It consists in influencing the light wave by acting on its electromagnetic component, by the implementation of a dielectric material, for example Si3N4, and metal nanoparticles, for example gold or silver. These nanoparticles resonate with the light wave. The whole can be achieved by conventional manufacturing techniques in microelectronics.
- the plasmonic technology is used in an unusual way to achieve an illuminating plate, according to the need for restitution of a transmission hologram.
- the arrangement of the light source 20, the light guide plate 16 and the holographic plate is in a global architecture that allows an optimization of the thickness of an image display system.
- the light guide plate 16 may advantageously be produced according to a collective manufacturing process, such as semiconductor-based electronic components.
- the dielectric network technology replaces or is associated with plasmonic technology.
- This dielectric network technology is known per se for uses other than in a holographic unit according to the invention.
- the dielectric network technology is used in an unusual way to make an illuminating plate, according to the need for restitution of a transmission hologram.
- the light input 22 is connected to the source 20 of light by an optical fiber 20P. So, the light source 20, which can be bulky, is offset with respect to the holographic image generation unit 12.
- the connector 22R comprises the input light 22 for feeding the holographic image generation unit.
- the light source 20, producing a laser beam is placed at a distance from the light guide plate. It allows to bring the light, at one or more points of entry of the light guide plate, by means of one or more optical fibers. This offset can make it possible to use a non-miniaturized laser source, which is therefore potentially less expensive, and placed in a protected place in which space is not restricted, without affecting the overall thickness of the system.
- FIG. 3 represents the principle of an exemplary implantation of the holographic signaling system 10 according to the invention at the rear of a vehicle 40.
- the system is in conformity with that represented in FIG. 2, which allows the support 14 is associated with the body 40C of the vehicle and use a light source remote from the unit 12 comprising said support.
- the unit 12 has about the size of 15 cm x 30 cm. It is in front of a driver who follows the vehicle, for example on the flap of the trunk 44 just beside the left rear light 42.
- the light source 20 is installed protected inside the trunk and it does not need to be particularly compact.
- the signaling could also be for example at the front of the vehicle or on its sides, by siting in the appropriate location of the unit at the front or on the sides of the vehicle.
- the signaling could also be for example inside the vehicle, by siting at the appropriate location of the unit in the passenger compartment of the vehicle.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Holo Graphy (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1350105A FR3000811B1 (fr) | 2013-01-07 | 2013-01-07 | Systeme de signalisation holographique comprenant une unite de generation d'au moins une image holographique |
PCT/EP2013/077258 WO2014106584A1 (fr) | 2013-01-07 | 2013-12-18 | Systeme de signalisation holographique comprenant une unite de generation d'au moins une image holographique |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2941672A1 true EP2941672A1 (fr) | 2015-11-11 |
Family
ID=47833291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13814887.9A Withdrawn EP2941672A1 (fr) | 2013-01-07 | 2013-12-18 | Systeme de signalisation holographique comprenant une unite de generation d'au moins une image holographique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2941672A1 (fr) |
CN (1) | CN105431786A (fr) |
FR (1) | FR3000811B1 (fr) |
WO (1) | WO2014106584A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201510525D0 (en) * | 2015-06-16 | 2015-07-29 | Jaguar Land Rover Ltd | Vehicular signalling system and method |
DE102015011815A1 (de) | 2015-09-09 | 2017-03-09 | Audi Ag | Verfahren zum Vorschlagen einer Positionierung mindestens eines Gegenstands |
FR3046829B1 (fr) * | 2016-01-15 | 2020-08-28 | Peugeot Citroen Automobiles Sa | Dispositif d’eclairage a guides de lumiere couples a des moyens d’emission de photons |
DE102016117969B4 (de) * | 2016-09-23 | 2022-09-22 | Carl Zeiss Jena Gmbh | Leuchteinrichtung für Fahrzeuge |
DE102016117967B4 (de) | 2016-09-23 | 2024-09-12 | Carl Zeiss Jena Gmbh | Leuchteinrichtung für ein Fahrzeug |
FR3061461B1 (fr) * | 2017-01-03 | 2020-06-19 | Valeo Vision | Systeme d'avertissement lumineux pour vehicule automobile et procede d'avertissement lumineux |
GB2595452B (en) * | 2020-05-21 | 2022-10-26 | Jaguar Land Rover Ltd | Illumination device, method and system |
GB2609762B (en) * | 2020-05-21 | 2023-08-30 | Jaguar Land Rover Ltd | Illumination device, method and system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4737001A (en) * | 1987-01-06 | 1988-04-12 | Hughes Aircraft Company | Holographic indicator for determining vehicle perimeter |
WO2011108138A1 (fr) * | 2010-03-04 | 2011-09-09 | 日本電気株式会社 | Élément optique, appareil de source de lumière et appareil d'affichage du type à projection |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5745266A (en) * | 1996-10-02 | 1998-04-28 | Raytheon Company | Quarter-wave film for brightness enhancement of holographic thin taillamp |
WO2005103771A1 (fr) * | 2004-04-23 | 2005-11-03 | Parriaux Olivier M | Dispositif de diffraction optique à haute performance |
US20110216408A1 (en) * | 2010-03-05 | 2011-09-08 | Chang-Ching Tsai | Linearly polarized light converter |
CN102360090A (zh) * | 2011-09-30 | 2012-02-22 | 中国科学院上海光学精密机械研究所 | 宽带金属介电反射光栅 |
CN102495442B (zh) * | 2011-11-11 | 2013-12-25 | 中国科学院上海光学精密机械研究所 | 金属介电反射光栅的设计方法 |
-
2013
- 2013-01-07 FR FR1350105A patent/FR3000811B1/fr active Active
- 2013-12-18 EP EP13814887.9A patent/EP2941672A1/fr not_active Withdrawn
- 2013-12-18 CN CN201380069784.7A patent/CN105431786A/zh active Pending
- 2013-12-18 WO PCT/EP2013/077258 patent/WO2014106584A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4737001A (en) * | 1987-01-06 | 1988-04-12 | Hughes Aircraft Company | Holographic indicator for determining vehicle perimeter |
WO2011108138A1 (fr) * | 2010-03-04 | 2011-09-09 | 日本電気株式会社 | Élément optique, appareil de source de lumière et appareil d'affichage du type à projection |
US20130033678A1 (en) * | 2010-03-04 | 2013-02-07 | Nec Corporation | Optical element, light source device, and projection display device |
Non-Patent Citations (1)
Title |
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See also references of WO2014106584A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105431786A (zh) | 2016-03-23 |
FR3000811A1 (fr) | 2014-07-11 |
FR3000811B1 (fr) | 2015-01-30 |
WO2014106584A1 (fr) | 2014-07-10 |
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