EP2329310A2 - Anzeigeeinrichtung, transparentes abbildungselement sowie verfahren zur herstellung eines transparenten abbildungselements - Google Patents
Anzeigeeinrichtung, transparentes abbildungselement sowie verfahren zur herstellung eines transparenten abbildungselementsInfo
- Publication number
- EP2329310A2 EP2329310A2 EP09781846A EP09781846A EP2329310A2 EP 2329310 A2 EP2329310 A2 EP 2329310A2 EP 09781846 A EP09781846 A EP 09781846A EP 09781846 A EP09781846 A EP 09781846A EP 2329310 A2 EP2329310 A2 EP 2329310A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- display device
- imaging element
- transparent
- holographic
- 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- Withdrawn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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
- G02B2027/0109—Head-up displays characterised by optical features comprising holographic elements comprising details concerning the making of holograms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/013—Head-up displays characterised by optical features comprising a combiner of particular shape, e.g. curvature
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/015—Head-up displays characterised by mechanical features involving arrangement aiming to get less bulky devices
Definitions
- the invention relates to a itatiei ⁇ cardi, in particular a head-up Dispiay, which is used for information display in motor vehicle windshields. Furthermore, the invention relates to a transparent imaging element and a method for producing a transparent imaging element, which is particularly suitable for a display device, such as a head-up display.
- a transparent imaging element is, for example, a transparent pane made of, for example, glass or plastic, it being possible to image an image with the aid of the pane.
- the transparent imaging element has a carrier element, such as the disc itself.
- the carrier element is provided with holographic-optical elements reflective layer.
- Such transparent imaging elements are used in display devices, such as head-up displays.
- the transparent figurative element is the windshield of a motor vehicle.
- an imaging device such as a projector
- optical elements such as lenses and mirrors
- the beam path passes through a complex optical system of lenses and mirrors, which also in the Depending on the optical system, the viewer sees the image at a suitable distance outside the windshield,
- a complex optical system of lenses and mirrors which also in the Depending on the optical system, the viewer sees the image at a suitable distance outside the windshield.
- Radiation is also reflected to the observer disturbing on the outside of the windshield and the observer thus doubly sees the BMd slightly offset, it is known to attach a Keiifoiie between the layers of the laminated glass.
- Another disadvantage is that due to the provision of a reflective layer, the angle of incidence is identical to the Ausfaüswinkel and therefore the position of the projector is fixed.
- a major problem with known head-up displays is the curvature of the windshield. It is necessary to compensate for the curvature of the windshield by the optical system. Due to the manufacturing process of the windscreens, however, they do not have exactly the same curvatures. This has the consequence that the optical system must be adapted to the curvature of the respective windshield. For this purpose, the windshields are extensively measured and sorted into categories or lots of similar curvatures. Tuned to this are several optical systems that must be assigned to the windshield of the corresponding curvature. For example, it is also problematic to replace the windshield, as this may result in a distortion of the image due to the changed curvature. Accordingly, the optical system must be readjusted or even replaced if necessary. Another problem is that the curvature of the windshield often changes during installation, which in turn can cause distortions. The above problem is not only with windshields but also with any other curved support elements that are used as an imaging element for an imaging system.
- the object of the invention is to provide an improved display device that can be operated in particular with simpler and therefore less expensive imaging devices. It is another object of the invention to provide an improved transparent imaging element and a corresponding production method.
- the object is achieved by a display device according to claim 1, a transparent imaging element according to claim 7 and a method for producing a transparent Abbiidungselements according to claim 21.
- the transparent imaging element according to the invention which is particularly suitable for display devices, such as head-up displays and the like, has a transparent carrier element.
- the transparent carrier element is, for example, a glass, plastic, composite pane or the like.
- a layer is connected to the transparent carrier element for reflection of an image.
- the layer is an exposed layer, wherein an at least one holographic-optical element is formed by the exposure.
- the layer exposed for this purpose is photosensitive, wherein an exposure takes place for example with a laser.
- the exposure forms the at least one holographic-optical element.
- an interference pattern is generated in the layer.
- the holographic-optical elements can also be formed by other methods, such as embossing or electron beam lithography , After the optionally required fixing or curing of the layer, a holographic-optical element is formed which reflects light incident on the layer in a defined wavelength and angular range.
- the carrier element can be curved together with the not yet exposed layer or a not yet exposed layer can be applied to a curved carrier element, wherein the exposure of the layer takes place in a curved position.
- a suitable interference pattern is generated by the Beuchten. In this case, the generated interference pattern thus has the same optical imaging properties, in particular even with local changes in curvature and unevenness.
- the carrier element may also be a film, which is then applied to the pane, in particular glued, after the coating has been applied to complete the imaging element, for example.
- the film is exposed in a curvature corresponding to the curvature of the disk or dgh to which the film is applied. Since it is necessary in this case to know the exact curvature of the disc or the like, it is particularly preferred that the layer to be exposed is arranged directly on a surface of the carrier element, wherein the carrier element in particular to the essential element, such as Slice of picture element itself, trades.
- the exposure of the layer is preferably such that the layer reflects the incident light Weileniden- and / or angle specific.
- the layer may be formed as a holographic mirror, as a hollow or Wöibspiege! acts, which preferably has magnifying properties.
- the layer is exposed with two opposing point light sources, each generating a spherical wave.
- the layer to be exposed is thus arranged between the two light sources. Possibly. can the two Point light sources are arranged at different angles to the normal of the carrier, ie to produce an independent of the Oberfiambaenreflex angle-specific Refietation. These are then an off-axis concave mirror or an off-axis mirror.
- the imaging element of the display device has a holographic-optical element which at the same time reflects and images the image in the direction of a viewer.
- the image plane for the viewer is preferably clearly outside the support element of the holographic-optical element, i. especially clear outside the windshield.
- an image within, i. related to the viewer in front of the support element, such as the windshield done.
- the at least one holographic-optical element additionally has imaging properties. This is preferably a magnifying image.
- the transparent imaging element is a windshield for a head-up display, it is therefore particularly preferable to carry out the exposure only after the windshield has been installed in the motor vehicle.
- a corresponding exposure of the layer it is preferably possible by a corresponding exposure of the layer to integrate a holographic lens in the holographic element. This is advantageous, in particular, when using the transparent imaging element in a marking device, since in this way one between the imaging device and the imaging device provided optical system can be simplified or possibly even completely eliminated.
- the layer to be exposed within the carrier element in particular as an intermediate layer of a laminated glass or the like.
- This has the advantage that the layer is particularly protected against mechanical damage.
- a material for the layer which can be fixed without contact after the inspection. The fixation of such material takes place for example by heat.
- a material that does not need to be fixed after exposure For example, the use of photopolymers is suitable here.
- a depiction device which is in particular a head-up display for motor vehicles, has a substantially transparent imaging element.
- the display device has a biology device, which is in particular a display, such as an LC, LED or OLED display.
- an image is generated, which is preferably emitted in the direction of the transparent imaging element or in the direction of the coated region of the carrier element.
- at least one holographic-optical element is connected to the imaging element. This serves to reflect the image in the direction of a viewer.
- the imaging element preferably has a transparent carrier element which is connected to an exposed layer for forming the at least one holographic-optical element.
- the imaging element is advantageously developed in particular as described above. Between the imaging element and the imaging element, a holographic lens may be arranged to enlarge the image. According to the invention, it is preferred that no optical system, in particular no optical mirrors or optical lenses, is provided between the imaging device and the imaging element. Due to the inventively designed transparent imaging element, a simply constructed display device can be realized. In particular, it is possible for the imaging device, such as the LCD, to be arranged laterally offset from the region of the transparent imaging element in which imaging takes place. The lateral offset can be compensated by a corresponding embodiment of the interference pattern. The arrangement of the imaging device is thus much more flexible, so that the construction of the dashboard is easier.
- a further significant advantage of the imaging element according to the invention is that it can be defined, in particular within narrow limits, which wavelength range is reflected and transcribed. This ensures that in the corresponding wavelength range, the incident light is reflected to a large extent.
- This has the advantage that the imaging device can be illuminated by a weaker illumination device compared to known head-up displays and dg. As a result, the energy consumption of the display device can be significantly reduced. This is particularly advantageous in the construction of head-up displays for motor vehicles. It is also possible to define that multiple wavelength ranges are reflected.
- a transparent support member such as a glass, plastic or composite disc or a corresponding film
- the layer is used to form a holographic-optical element.
- This can be done, for example, by exposure, Embossing or electron beam lithography done.
- the carrier element can be curved or the layer can be applied to the already curved carrier element.
- the formation of the layer for forming holographic-optical elements in a curved state of the carrier element can take place. In this way, according to the invention, a diffractive structure can be produced in the layer whose optical properties are independent of the curvature of the support element.
- the support element is brought together with the layer to be exposed before exposure in its final form, in particular installed.
- the exposure of the layer is preferably carried out, as described above, with the aid of a plurality of interfering light sources for generating an interference pattern. This may be wavelength and / or angle specific, so that only light in a corresponding wavelength and / or angular range is reflected.
- the material used may preferably be fixed without contact and, in a particularly preferred embodiment, self-fixing after exposure, so that an additional fixing step is eliminated.
- the material comprises photopolymers.
- Fig. 1 is a schematic diagram of a display device according to the invention, and Fig.2 u. 3 schematic representations for the production of holographic-optical elements in a photosensitive layer.
- a head-up display for motor vehicles is a head-up display for motor vehicles.
- the display device has an imaging element 10, which is a windshield in the illustrated embodiment.
- the windshield made of laminated glass is thus the support element 12 of the imaging element 10.
- a layer 14 is disposed within the support member 12.
- the layer 14 is arranged in reality so that it runs parallel to an inner side 16 of the disk 12, the layer 14 is shown curved in Fig. 1 for clarity. This indicates that the at least one holographic-optical element is formed in the layer in such a way that it acts as a concave mirror, so that an enlargement of the image is achieved.
- the image is generated by an imaging device 18, which in the illustrated embodiment is an LCD.
- the LCD 18 emits the image, as indicated by the beam path 20, in the direction of the at least one holographic-optical element formed by the layer 14. Due to the at least one holographic-optical element 14, the incident radiation 20 is reflected in the direction of an observer 24 in accordance with an indicated radiation 22.
- two point light sources 28, 30 can be provided to form a hollow mirror according to FIG. 2.
- the two point light sources are arranged opposite to each other in the illustrated embodiment, so that the Layer 14, in which the interference pattern is generated, between the two point light sources 28, 30 is arranged.
- it is the design of a regular concave mirror, so that the two point light sources 28, 30 are arranged on a common axis 32 and the axis 32 is perpendicular to the layer 14.
- the LCD 18 Due to the formation of an off-axis concave mirror, it is possible to arrange the LCD 18 in a head-up display laterally offset from the area in which the layer 14 is provided.
- the point light sources 28, 30 By arranging the point light sources 28, 30 at an angle to each other, it is possible to form an angle-selective hologram.
- a hologram By such a hologram, light incident on the hologram is reflected only in a predetermined angular range.
- a wavelength-selective concave mirror By selecting corresponding wavelength ranges of the point light sources 28, 30, it is possible to form a wavelength-selective concave mirror.
- Such a hologram then only reflects light in a defined, predetermined wavelength range.
- it is possible to define a plurality of angular and wavelength ranges In particular, by the definition of multiple wavelength ranges, it is possible to provide the viewer with multicolor information.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Holo Graphy (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Instrument Panels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810039737 DE102008039737A1 (de) | 2008-08-26 | 2008-08-26 | Anzeigeeinrichtung, transparentes Abbildungselement sowie Verfahren zur Herstellung eines transparenten Abbildungselements |
PCT/EP2009/060544 WO2010026032A2 (de) | 2008-08-26 | 2009-08-14 | Anzeigeeinrichtung, transparentes abbildungselement sowie verfahren zur herstellung eines transparenten abbildungselements |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2329310A2 true EP2329310A2 (de) | 2011-06-08 |
Family
ID=41719576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09781846A Withdrawn EP2329310A2 (de) | 2008-08-26 | 2009-08-14 | Anzeigeeinrichtung, transparentes abbildungselement sowie verfahren zur herstellung eines transparenten abbildungselements |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2329310A2 (de) |
DE (1) | DE102008039737A1 (de) |
WO (1) | WO2010026032A2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015101687A1 (de) | 2015-02-05 | 2016-08-11 | Carl Zeiss Jena Gmbh | Verfahren und Vorrichtungen zur Dateneinspiegelung |
DE102015116408A1 (de) | 2015-09-28 | 2017-03-30 | Carl Zeiss Jena Gmbh | Vorrichtung zur Datenprojektion |
CH712659A1 (de) * | 2016-07-08 | 2018-01-15 | V-Zug Ag | Generierung eines Garprozesses. |
DE102016113518A1 (de) | 2016-07-21 | 2018-01-25 | Carl Zeiss Jena Gmbh | Vorrichtungen zur Dateneinspiegelung |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3940204A (en) * | 1975-01-23 | 1976-02-24 | Hughes Aircraft Company | Optical display systems utilizing holographic lenses |
DE3532120A1 (de) * | 1985-09-10 | 1987-03-19 | Ver Glaswerke Gmbh | Windschutzscheibe mit einer reflektierenden einrichtung zur einspiegelung von optischen signalen in das gesichtsfeld des fahrers |
DE3712663A1 (de) * | 1987-04-14 | 1988-10-27 | Holtronic Gmbh | Anzeigesystem zum moeglichst akkommodationsfreien ablesen von informationen bei auf fernsicht eingestelltem auge |
GB2260420A (en) * | 1991-10-09 | 1993-04-14 | Pilkington Plc | Producing of laminated structures with holograms |
JP2587676Y2 (ja) * | 1992-01-07 | 1998-12-24 | 矢崎総業株式会社 | 車両用表示装置 |
DE4445555C2 (de) * | 1993-12-24 | 2002-07-18 | Hyundai Autonet Co | Blickfeld-Darstellungsgerät für Fahrzeuge |
DE19927712A1 (de) * | 1998-12-02 | 2000-06-08 | Hsm Gmbh | Holografisches Display-System zur Darstellung von Information |
DE19930710C2 (de) * | 1999-07-02 | 2003-06-12 | Eads Deutschland Gmbh | Bilddarstellungssystem und -verfahren für Fahrzeuge |
DE102004009422A1 (de) * | 2004-02-24 | 2005-09-08 | Metronic Ag | Verfahren und Vorrichtung zum Aufbringen von diffraktiven Elementen auf Oberflächen |
JP2006162798A (ja) * | 2004-12-03 | 2006-06-22 | Konica Minolta Photo Imaging Inc | 光学デバイス、映像表示装置およびヘッドマウントディスプレイ |
JP2007058095A (ja) * | 2005-08-26 | 2007-03-08 | Fujifilm Corp | ホログラム記録方法、ホログラム記録材料、光記録媒体、光記録媒体への記録方法、3dディスプレイホログラム、及び3dディスプレイホログラムの製造方法 |
-
2008
- 2008-08-26 DE DE200810039737 patent/DE102008039737A1/de not_active Withdrawn
-
2009
- 2009-08-14 EP EP09781846A patent/EP2329310A2/de not_active Withdrawn
- 2009-08-14 WO PCT/EP2009/060544 patent/WO2010026032A2/de active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
WO2010026032A3 (de) | 2010-10-07 |
WO2010026032A2 (de) | 2010-03-11 |
DE102008039737A1 (de) | 2010-04-01 |
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