EP1664901A1 - Device for the representation of optical information by means of a virtual image in particular in a motor vehicle - Google Patents
Device for the representation of optical information by means of a virtual image in particular in a motor vehicleInfo
- Publication number
- EP1664901A1 EP1664901A1 EP04766564A EP04766564A EP1664901A1 EP 1664901 A1 EP1664901 A1 EP 1664901A1 EP 04766564 A EP04766564 A EP 04766564A EP 04766564 A EP04766564 A EP 04766564A EP 1664901 A1 EP1664901 A1 EP 1664901A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical element
- refractive
- mirror surface
- mirror
- refractive optical
- 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- Withdrawn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
- 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
Definitions
- the invention relates to a device for displaying optical information using a virtual image, in particular in a motor vehicle.
- Devices of this type are known from the prior art, the optical information in the form of light beams being perceivable from an image-forming device via at least one mirror surface as a virtual image in front of, behind or in a windshield, the light beams resulting in a beam path.
- the image generation device can consist, for example, of an electron tube, a liquid crystal display (LCD) with an associated light source or organic light emitting diodes (OLED).
- the prior art uses an optical system with a plurality of spatially arranged mirrors with free-form surfaces.
- the mirror or mirrors must correct the influence of the curvature of the windshield on the image in such a way that the driver can perceive an undistorted image.
- the mirror or mirrors enlarge the image of the image generation device. Since the windshield contours usually have complex, non-symmetrical surfaces with variable curvatures and are therefore also referred to as free-form surfaces, the surfaces of the mirror or mirrors must also be designed as free-form surfaces.
- a disadvantage of the currently known devices is that they require a large amount of space, which when using the device as a head-up Display in a motor vehicle is only available to a limited extent, since the device is preferably arranged in the cockpit and the cockpit must provide a large number of functional elements of the motor vehicle, such as conventional instrumentation, installation space for the on-board electronics and space for ventilation ducts.
- the object of the invention is therefore to provide a device for displaying optical information by means of a virtual image, in particular in front of, behind or on a surface, in particular the windshield of a motor vehicle, which has a lower volume requirement than the known head-up displays with mirror optics ,
- a refractive element is arranged in the beam path after the image-forming device and in front of the mirror surface, and the light beams of the image-forming device reach the mirror surface from the refractive element, and are reflected back by the mirror surface into the refractive element and from there reach the surface, in particular the windshield, directly or via further optical elements.
- the refractive optical element can be made of a glass or a light-conducting plastic. Due to its refractive index and the additional active glass or plastic surface, the refractive element generates additional degrees of freedom in optics optimization and a reduction in the effective optical path length. This allows the required installation space to be significantly minimized with the same optical performance.
- the installation space can be further reduced if the mirror surface is arranged on the refractive element. If the refractive element is delimited by the mirror surface on at least one side, the construction is even more compact and the position between the refractive element and the mirror surface is clearly defined.
- a further reduction in the optically effective path length can be achieved by arranging one or more light-conducting components in the beam path in front of and / or behind the refractive element, each of which has an optically denser medium than air. If there is a further mirror surface in the beam path and one or more light-conducting components with one or more optically denser media than air are arranged between the mirror surfaces, the optically effective path length of the beam path can be further shortened.
- diffractive optical element or holographic optical element is arranged in the beam path, chromatic errors of the refractive elements can be corrected in a comparatively simple manner.
- DOE diffractive optical elements
- HOE holographic optical elements
- the diffractive optical element or the holographic optical element is particularly advantageously arranged in the beam path directly in front of the refractive element, ideally directly on the refractive element.
- FIG. 1 shows a head-up display known from the prior art
- Figure 2 shows a head-up display according to the invention in a first embodiment
- FIG. 3 shows section A from FIG. 2
- FIG. 4 shows a head-up display according to the invention in a second embodiment
- Figure 5 shows an inventive head-up display in a third embodiment.
- FIG. 1 shows an image generation device 1 consisting of a light source 2 and an LCD 3, which is irradiated by the light source 2.
- Light rays LS pass from the LCD 3 to a mirror 4, are reflected by the mirror 4 to a mirror 5, which reflects the light rays to a mirror 6, which in turn emits the light rays LS against a windshield WS.
- a driver whose eye is labeled E can perceive a virtual image P behind the windshield WS.
- the components 1 to 6 described above are mounted in a cockpit C, which has a light exit opening 0.
- the device according to the invention in the exemplary embodiment of a head-up display has, in FIG. 2, the image generating device 1 from FIG. 1, consisting of the light source 2 and the LCD 3.
- a refractive optical element 7 is provided on one side with a mirror surface 8.
- a diffractive optical element 9 is arranged on the side opposite the mirror surface 8.
- the head-up display has the mirror 6 with a mirror surface 6a.
- the light beams LS generated in the imaging device 1 penetrate the diffractive optical element 9, the refractive optical element 7 and are reflected back from the mirror surface 8a into the refractive optical element 7 and leave the refractive optical element 7 through the diffractive optical element 9 in the direction of the mirror 6 with the mirror surface 6a, from which they are then reflected onto the windshield WS , so that a motorist can perceive a virtual image P outside the windshield WS with his eye E.
- FIG. 3 shows the refractive optical element 7, on one side of which the mirror surface 8 is attached.
- the diffractive optical element 9 or a holographic optical element (HOE) is arranged on the side of the refractive optical element 7 opposite the mirror surface 8.
- the refractive optical element 7 forms with the mirror surface 8 a so-called catadioptric mirror, in the present exemplary embodiment in the manner of a manganese reflector.
- the diffractive optical element 9 corrects chromatic errors of the refractive optical element 7.
- a light beam LS is refracted for the first time when it enters the refractive optical element 7, then reflected on the mirror surface 8 and refracted again when it exits.
- FIG. 4 differs from FIG. 2 in that a refractive optical element 7a is arranged between mirror surfaces 8a and 8b and is additionally guided in the beam path, which is formed by the light beams LS, in the direction of the image forming device 1 and there with an active glass surface 7c in Direction of the imaging device 1 is completed.
- the material of the refractive optical element 7a can consist of a glass or a light-conducting plastic.
- the third exemplary embodiment in FIG. 5 is partially a combination of the exemplary embodiments from FIGS. 2 and 4.
- the refractive optical element 7 has a mirror surface 8 and a diffractive optical element 9.
- a refractive optical element 7b is arranged in front of the diffractive optical element 9 and has approximately the dimensions of the refractive optical element 7a. In contrast to the refractive optical element 7a, no mirror surfaces are attached directly to the refractive optical element 7b.
- the light beams LS which are emitted by the image forming device 1, first penetrate the refractive optical element 7b, the diffractive optical element 9, the refractive optical element 7 and are transmitted from the mirror surface 8 through the refractive optical element 7, the diffractive optical element 9 the refractive optical element 7b reflects in the direction of the mirror 6.
- the different configurations of the active glass surface 7d and the mirror 6 thus allow an additional desired or necessary adaptation of the beam path.
- the refractive optical element 7b is also possible to assemble from several individual parts with different optical refractive indices in order to adapt the beam path accordingly.
- the invention is not only applicable to the head-up displays described above.
- Glass types or plastic with good light-conducting properties can be used as the material for the refractive optical elements 7, 7a, 7b.
- the mirror surfaces 8, 8a, 8b discrete mirrors with corresponding mirror surfaces can also be used. However, this generally requires a little more space and requires additional assembly work.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Instrument Panels (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003144688 DE10344688A1 (en) | 2003-09-25 | 2003-09-25 | Device for displaying optical information by means of a virtual image, in particular in a motor vehicle |
PCT/EP2004/051866 WO2005031439A1 (en) | 2003-09-25 | 2004-08-20 | Device for the representation of optical information by means of a virtual image in particular in a motor vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1664901A1 true EP1664901A1 (en) | 2006-06-07 |
Family
ID=34384294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04766564A Withdrawn EP1664901A1 (en) | 2003-09-25 | 2004-08-20 | Device for the representation of optical information by means of a virtual image in particular in a motor vehicle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1664901A1 (en) |
DE (1) | DE10344688A1 (en) |
WO (1) | WO2005031439A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005029583A1 (en) * | 2005-06-25 | 2007-01-04 | Carl Zeiss Jena Gmbh | Optical unit for a head-up display |
DE102007007162A1 (en) | 2007-02-09 | 2008-08-14 | GM Global Technology Operations, Inc., Detroit | Holographic information display |
DE102007047232A1 (en) * | 2007-10-02 | 2009-04-16 | Linos Photonics Gmbh & Co. Kg | Head-up display for motor vehicle |
DE102008020858B4 (en) * | 2008-04-25 | 2012-09-13 | Carl Zeiss Ag | Projection system for an optical display device and head-mounted display with such |
DE102009002189A1 (en) * | 2009-04-03 | 2010-10-14 | Linos Photonics Gmbh & Co. Kg | Head-up display for displaying information to driver of vehicle e.g. car, has reflecting surface formed between reflection polarization foil and light source, and reflecting light reflected from polarization foil to light valve |
DE102010027357B4 (en) * | 2010-07-16 | 2017-04-06 | Audi Ag | Transparent display device for a motor vehicle |
DE102011075884A1 (en) | 2011-05-16 | 2012-11-22 | Robert Bosch Gmbh | HUD with holographic optical elements |
DE112013003876A5 (en) | 2012-08-04 | 2015-04-16 | Johnson Controls Gmbh | Head-Up Display |
CN108107575A (en) * | 2016-11-25 | 2018-06-01 | 矽创电子股份有限公司 | Optical imaging device |
DE102021128366A1 (en) | 2021-10-29 | 2023-05-04 | Bayerische Motoren Werke Aktiengesellschaft | Mirror head-up display with hybrid optical elements |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3216308A (en) * | 1961-10-05 | 1965-11-09 | Marvin J Northcutt | Aircraft landing sight including collimating mangin mirror and corrector lens |
JPH0616136B2 (en) * | 1986-11-14 | 1994-03-02 | 矢崎総業株式会社 | Automotive holographic display system |
JP2705245B2 (en) * | 1989-09-27 | 1998-01-28 | キヤノン株式会社 | Head-up display device |
DE69119017T2 (en) * | 1990-09-20 | 1996-11-14 | Fujitsu Ltd | Image display device |
US5991084A (en) * | 1998-02-04 | 1999-11-23 | Inviso | Compact compound magnified virtual image display with a reflective/transmissive optic |
US6262848B1 (en) * | 1999-04-29 | 2001-07-17 | Raytheon Company | Head-up display |
-
2003
- 2003-09-25 DE DE2003144688 patent/DE10344688A1/en not_active Ceased
-
2004
- 2004-08-20 EP EP04766564A patent/EP1664901A1/en not_active Withdrawn
- 2004-08-20 WO PCT/EP2004/051866 patent/WO2005031439A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2005031439A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10344688A1 (en) | 2005-05-12 |
WO2005031439A1 (en) | 2005-04-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2006042814A1 (en) | Device for representing optical information by means of a virtual image, in particular in a motor vehicle | |
DE102005017207A1 (en) | Projection unit for a head-up display | |
DE102018203292A1 (en) | Display image projection system | |
EP2195695A2 (en) | Head-up display, particularly for a motor vehicle | |
DE102011075205A1 (en) | Display device for vehicle, has housing with outer wall, in which outlet opening is arranged, while imager for generating image information is arranged inside housing, where optical element is arranged inside housing | |
DE102020106160A1 (en) | Arrangement for the suppression of reflections in a windshield display system and windshield display system | |
DE102018201002B4 (en) | Backlight unit and head-up display device | |
DE102017130376B4 (en) | Display device as a head-up display with simple eyebox displacement | |
EP1664901A1 (en) | Device for the representation of optical information by means of a virtual image in particular in a motor vehicle | |
DE112022001911T5 (en) | Image projection device | |
DE102018205148B4 (en) | Augmented Reality Representation Glasses | |
DE102016225994A1 (en) | Projection device for a motor vehicle and method for displaying a virtual image for a driver of a motor vehicle | |
DE4323571A1 (en) | Head=up display system for motor vehicle - has hologram reflecting light from display unit in roof to windscreen to provide virtual image | |
DE102012202637A1 (en) | Projection head for a laser projector | |
DE202020106107U1 (en) | Camera for a vehicle | |
DE102018205371A1 (en) | Vehicle display device | |
DE102010062634A1 (en) | Head-up display comprises projection unit for vehicle, where image forming unit is provided for emitting rays of image which is displayed, where optical elements comprises two mirrors | |
DE102017212540A1 (en) | Projection display device with a display in several display levels | |
DE102016223381A1 (en) | Display device and visual field display system for a motor vehicle and method for operating such | |
DE102016218582A1 (en) | Projection display device with a display in several display levels | |
DE10204976A1 (en) | periscope | |
DE102019131730A1 (en) | Field of view display device for a vehicle | |
DE102023107275B3 (en) | Compact projection unit with a directional diffuser to suppress parasitic image, as well as field of view display device and vehicle | |
EP2894507A1 (en) | Telescope with prism inversion system | |
DE102018117940A1 (en) | Sending unit for an optical object detection device and corresponding optical object detection device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20060315 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MAYER, RALF Inventor name: LIND, BRITTA Inventor name: LUDEWIG, BERND Inventor name: KLEIN, WERNER |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTINENTAL AUTOMOTIVE GMBH |
|
17Q | First examination report despatched |
Effective date: 20081104 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20141111 |