CN104166238A - Apparatus and method for projecting an image information in a field of view of a vehicle occupant of a vehicle - Google Patents

Apparatus and method for projecting an image information in a field of view of a vehicle occupant of a vehicle Download PDF

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Publication number
CN104166238A
CN104166238A CN201410202035.3A CN201410202035A CN104166238A CN 104166238 A CN104166238 A CN 104166238A CN 201410202035 A CN201410202035 A CN 201410202035A CN 104166238 A CN104166238 A CN 104166238A
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China
Prior art keywords
optical
visual
image information
eye
occupant
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CN201410202035.3A
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Chinese (zh)
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CN104166238B (en
Inventor
G.比贝尔格
J.豪斯
D.格里姆
F.帕霍利克
U.博斯多夫
B.赫措格
S.施泰因科格勒
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罗伯特·博世有限公司
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Priority to DE102013208971.6A priority patent/DE102013208971A1/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • G02B27/0149Head-up displays characterised by mechanical features
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • G02B27/0101Head-up displays characterised by optical features
    • G02B2027/0123Head-up displays characterised by optical features comprising devices increasing the field of view

Abstract

The invention relates to a device for projecting image information in a field of view of a vehicle occupant (106) of a vehicle (100). The device is provided with an optical system (108) having at least one optical element (112) for projecting the image information to a combiner surface (104) and a means (114) for moving said optical system (108) to adjust the projection of the image information to an eye position (122) of the vehicle occupant (106) such that the vertical position or the look-down angle remains essentially constant.

Description

For image information being projected to the apparatus and method in the occupant's of vehicle the visual field
Technical field
The present invention relates to a kind of for image information being projected to the occupant's of vehicle a kind of corresponding device and method in the visual field.
Background technology
Visual field display be a kind of can be by the display in the occupant's of information inputs vehicle the visual field.For example can be by the information inputs driver's of vehicle assisted system the visual field.Visual field display is also with this title of HUD or known referred to as HUD.Visual field display illuminates transparent face or window face with frame, thereby the light microscopic face of the reflection of this information is reflexed in the observer's who observes through transparent face eyes.With respect to the display packing of traditional instrumentation plate, visual field display has following advantage, and observer will eye not remove from real traffic conditions, just can obtain the information of being passed on by visual field display.
In the prior art, in order to make vertical image adaptation driver's vertical eye locations, the primary mirror of upset visual field display in the analog visual field display (HUD) of noncontact.This is a kind of simple solution, but wherein makes the setting of eye position associated with the variation (depression angle LDA) at the right angle with respect to road surface.
DE 10 2,007 047232 A1 have described a kind of visual field display for motor vehicle, and it has projecting unit, and this projecting unit has for the image composer of generating virtual image with for observing the combiner of virtual image.
Summary of the invention
Under this background, utilization the present invention proposes according to described in independent claims, a kind of for image information being projected to the occupant's of vehicle the device in the visual field and a kind of for image information being projected to the occupant's of vehicle the corresponding method in the visual field, the method is used this device.Favourable structural scheme is by providing in corresponding dependent claims and following explanation.
Occupant, especially driver's eye-level may be subject to its stature and simultaneously or be alternatively subject to the impact of its seat position.Visual field display can so provide image information, makes driver regardless of eye-level and/or eye position in the situation that, to obtain image information, and the projection of image information in other words can adapt to the position of eyes.If the projection of image information has adapted to the position of eyes, compare so driver eyes can in corresponding large scope (eye movement scope) and determine thus, corresponding large-sized optical system of visual field display saved structure space.Can use in an advantageous manner described design proposal to create the large visual field in the compactness of structure space.
Can use described design proposal for the visual field display of different characteristic.For example, this scheme is also suitable for the large visual field display in the visual field (English: field of view, FOV).Can in the main visual field driver, add the extraneous information in true Driving Scene by so-called augmented reality (English: augmented reality, or abbreviation AR) via windshield at this.With the typical application example of the visual field display of augmented reality for example have that pedestrian's mark, the circuit at the instruction of detouring, night navigate accurately, visual spacing alarm, deviation alarm or ACC(adaptive cruise control system) spacing setting, that is to say and in the time travelling by automatic cruising instrument, set spacing.
Comprise for the device that image information is projected to the occupant's of vehicle the visual field:
Optical system, it has at least one for the optical element to combinatorial surface projected image information; And
For the mechanism of moving optical system, thereby make the projection of image information adapt to occupant's eye position.
Vehicle can have visual field display.Visual field display also can be interpreted as visual field display device or be interpreted as an alternative direction of visual lines display device.Visual field display can be interpreted as HUD (Head-up Display) or referred to as HUD.Visual field display can be interpreted as a kind of direction of visual lines that can be used for the information of the information of image information form, for example driver assistance system to add occupant in car display instrument in the visual field in other words.Described occupant can be the driver of vehicle.Optical system can be interpreted as multiple optical elements.Optical element can be interpreted as the medium for guiding light or light being turned to.That optical element can be designed to is printing opacity or reflective, be for example designed to lens, minute surface or diffraction element.Optical system can limit the layout of optical element.In addition, optical system can have at least two for the optical element to combinatorial surface projected image information.This optical system can be described to the overall optical device between image composer and combinatorial surface.This optical system can be configured to the image information being provided by image composer to be directed on combinatorial surface.Can be so-called colligator, windshield or independent combiner at this combinatorial surface.Combinatorial surface can be a part for vehicle, wherein can arrange visual field display.The described device for the visual field that image information projected to the occupant of vehicle can form light path between image composer and combinatorial surface.Optical system can be called as photoelectricity machine assembly with the combination of the mechanism for mobile.Can observe virtual image by combinatorial surface and the overall system being used as on the optical element of optical amplifier device.These optical elements can also comprise the windshield of vehicle except minute surface.Wherein combinatorial surface can combine the virtual image of visual field display and surrounding environment.
In addition can be configured to along moving track moving optical system for the mechanism of moving optical system.Moving track can be straight line or be approximately straight line.So just moving optical system linearly.Moving track can be bending track as an alternative.Therefore, this optical system can be round a some rotation.For example, optical system can be round the central point rotation of optical element.Can be very favourable by Linear-moving and in rotary moving combining.In addition, moving track can be curve shape arbitrarily, thereby makes projection adapt to the shape of combinatorial surface.Can realize mobile or pass by the rolling guiding piece or the sliding guide that are arranged on described device side.The light path of image information moves following advantage is provided along moving track, even if can adapt to combinatorial surface and simultaneous adaptation occupant's eye position.
Described design proposal of passing along track provides following advantage, passes by substantially parallel, and virtual image can be remained on constant position.In one embodiment, if desired for the effect of bending windshield can be proofreaied and correct passing.
Also advantageously, so construct moving track, thereby passing when optical system, displays image information on constant position vertical substantially.
Also advantageously, so construct moving track, thereby in the time passing optical system, substantially with vertical constant visual angle (depression angle) displays image information.
Also advantageously, optical system has a kind of housing, is arranging at least two optical elements in this housing.Utilize this housing for example optical system can be configured to prevent dust.Housing can have shrouding disc, can be towards the direction guiding light beam of combinatorial surface by shrouding disc.Can integrated dressing table in this housing.Mechanism for moving optical system also can be arranged in housing at least in part.For mobile mechanism can be configured to mobile in housing described at least two optical elements or be configured to housing to move together with described at least two optical elements.
In addition, optical system can have a kind of housing, and this housing also has shrouding disc except optical element.In addition, this device can also have dressing table.Dressing table can be interpreted as a kind of surface that is preferably sub-black, it is mirror-reflection in shrouding disc, if design so agley shrouding disc, thereby make occupant all can only see a mirror image of dressing table at any point of shrouding disc, the combination of shrouding disc and dressing table has just avoided ambient light in luminous shrouding disc internal reflection reliably so.Otherwise this reflex likely can greatly be disturbed described occupant.
In addition, optical system can also have so a kind of housing, and this housing also has image composer except optical element.
In addition, described device can also have the mechanism for one of them optical element of at least two optical elements of moving optical system.The minute surface so for example can overturn.So for example can pass image composer.Can be called the internal adjustment mechanism of single optical module or element for the mechanism of mobile at least one optical element.The movement of at least one optical element can substantially be synchronizeed and realize with the movement of this optical system.The operation that the movement of at least one optical element can be independent of optical system realizes, thereby for example obtains the tolerance compensating for combinatorial surface.
In addition, described device can also have flexible mechanical connection portion, for the supporting structure of optical system and this device being coupled together and simultaneously or couple together with instrument panel as an alternative.Described device can be connected with the supporting structure in car under the state packing in car.This device can be connected with the instrument panel in car under the state packing in car.Described supporting structure can be a kind of instrument panel.Described device can be provided with the flexible zone of transition towards instrument panel.In the time that described device has packed in car, can utilize flexible zone of transition to compensate this device and the supporting structure spacing changing that moves due to device.Flexible zone of transition can be the plate body that can pass, for example, as the situation in elevator door.This has following advantage, and this system has not allowed opening to make inside contaminated or impaired.
Also advantageously, optical system comprises the image source for image information is provided.If pictcure generator is a part for optical system, it just can move thereupon together.This just can make structural form compacter.
Wherein said device can comprise the mechanism for move image source corresponding to the movement of optical system.So for example can pass image composer with respect at least two of this device optical element.Image composer can with described device synchronizing moving, thereby make from image composer through optical element to combinatorial surface and adapt to occupant's eye position towards the light path of automotive occupant direction.
In addition, can be corresponding to the movement of optical system and simultaneously or the demonstration of adjusting as an alternative image source corresponding to the movement of image source.The demonstration of described image source can be interpreted as the image information demonstrating in image source or projected by image source as an alternative.So, for example, can pass, image in rotation, distortion or Zoom display content or image source shows.The demonstration of image source can be manipulated by control gear described below.By adjusting the demonstration of image source, the demonstration that can be advantageously occupant in conjunction with the moving influence of optical system.
Also advantageously, described device comprises control gear, and this control gear has interface for reading eye position signal and the interface for the control signal of output mobile optical system.Wherein eye position signal can represent occupant's eye position.The control signal that control gear is configured to read at least one eye position signal and sends moving optical system.Eye position signal can be corresponding by having, provide for the picture pick-up device of identifying head position or identifying as an alternative the assessment unit of eye position.Eye position signal can be customized for certain automotive occupant.For example can or identify occupant and corresponding eye position signal is provided by face recognition by key, input code.
Also advantageously, described device comprises control gear, and this control gear has the interface of the operation behavior for obtaining occupant.Wherein this control gear can be configured to the mechanism for moving optical system according to operation behavior commander.In one embodiment, occupant can manually make the projection of image information adapt to the eye position of automotive occupant.So the mode that electronic external mirror having indicator light can be set to be similar to realizes the operation behavior that control gear is set.
Control gear can be interpreted as a kind of electrical equipment here, and its can processes sensor signal and sends control signal and/or data-signal according to sensor signal.Control gear can have interface, and this interface can form according to hardware and/or software construction.In the structure of hardware type, these interfaces can be for example parts for so-called ASIC system, the various functions that it has comprised controller.But also possible, these interfaces are intrinsic integrated circuit or form by independently constructing element at least in part.In the structure of software type, these interfaces can be software modules, and they are for example together with other software modules and be stored on microcontroller.
A kind of for comprising the following steps by thering is the method that image information projects the occupant's of vehicle the visual field by least two optical systems for the optical element to combinatorial surface projected image information:
Moving optical system, thus make the projection of image information adapt to occupant's eye position.
In other words, description be to pass visual field displays along how much orbital curves of determining, can make highly to adapt to whereby different drivers' eye position, or be that different seat positions regulates highly.Also this process is called to " intelligent mobile " (Smart Shifting) below.So select orbital curve here, thus make picture material for each position exactly projection to the scene front of travelling really.Therefore, for all shift positions of visual field display can both with the rectangular situation of road surface shape under see picture material.This is also referred to as English concept " look down angle ", or is called for short LDA.This is especially for showing that AR information (" Augmented Reality " augmented reality) is most important.
In the unit that needs to be passed, namely in optical system, can arrange one or more optical element and arrangenent diagram image source simultaneously or as an alternative.Optical element advantageously can be so set, make can both form non-warping as far as possible, image clearly for middle diverse location.
According to a kind of embodiment, in the visual field display that can show at augmented reality, use described device.The rolling guiding piece or the sliding guide that are connected on side in this peace can be configured to realize the passing to optical system.In one embodiment, shrouding disc and dressing table can be integrated in photoelectricity machine assembly.Optical system in other words optical system can in the situation that using housing or box, be closed with the combination (also can be called photoelectricity machine assembly) for the mechanism of moving optical system and be for example therefore prevent dust or be waterproof as an alternative.From described housing can be along the moving direction of optical system, namely realize forward and backward the flexible zone of transition of for example leading to the instrument panel of vehicle.In one embodiment, the zone of transition of described flexibility can comprise the plate body that can pass, and this plate body is similar to sliding door.In a kind of alternative embodiment, the zone of transition of described flexibility can be configured to corrugated tube.
In another embodiment, for example can be by utilizing picture pick-up device or personalized the head tracking being undertaken by key, face recognition etc. to complete passing mobile control.Internal adjustment to single optical module, for example overturn primary mirror or pass image composer and substantially can synchronize with passing, but for example also can be designed to independently extraly as position compensation tolerance, and simultaneously or as the shape tolerance balancing that is chosen as windshield.
An advantage of the invention is and structure space customer requirement smooth as far as possible and that the visual field is large as far as possible can be combined.Wherein can both guarantee the visuality of image information for the very large body size of difference.Driver's eyes here can be mobile in the eye movement scope (Eyebox, EB) of regulation.Advantageously, can affect and reduce in other words the structure space that visual field display needs by the present invention.
Brief description of the drawings
Exemplarily elaborate the present invention by accompanying drawing below.Wherein:
Fig. 1 shows the vehicle having according to the visual field display of a kind of embodiment of the present invention;
Fig. 2 shows according to the schematic diagram of the visual field display of a kind of embodiment of the present invention;
Fig. 3 shows the schematic diagram of visual field display;
Fig. 4 to 7 shows according to the schematic diagram of the visual field display of embodiments of the invention;
Fig. 8 shows according to the visual field display of a kind of embodiment of the present invention 102 and the comparison diagram of visual field display that there is no adjustable optical system;
Fig. 9 show according to a kind of embodiment of the present invention, for image information being projected to the occupant's of vehicle the process flow diagram of method 900 in the visual field;
Figure 10 and 11 shows according to the schematic diagram of the variation of eye position a kind of embodiment of the present invention, occupant and variation that therefore cause and angle road surface (depression angle LDA); And
The road that Figure 12 shows the image analog according to the contact of a kind of embodiment of the present invention covers.
Below in the explanation of the preferred embodiments of the present invention, for shown in different accompanying drawings and the element that plays similar effect use identical or similar Reference numeral, saved the repeat specification to these elements at this.
Embodiment
Fig. 1 shows the vehicle 100 having according to the visual field display 102 of a kind of embodiment of the present invention.This vehicle 100 has windshield 104.Occupant 106 is positioned at vehicle.In the embodiment shown, visual field display 102 comprises optical system 108 and image composer 110.Windshield 104 is as the combinatorial surface 104 of visual field display 102.This combinatorial surface is using visual field display 102(HUD) virtual image and surrounding environment combine: make visual field display 102(HUD by surface reflection) image mirror as virtual image, also guaranteed to see the surrounding environment of vehicle 100 as this combinatorial surface of transparent glass simultaneously.In the embodiment shown, optical system 108 has two optical elements 112.Optical system 108 is connected with the mechanism 114 for moving optical system 108.Mechanism 114 for moving optical system 108 is configured to move this optical system 108 along moving track.
Mechanism 114 for moving optical system 108 is connected with control gear 116.That this control gear 116 comprises is not shown further, for reading the interface of eye position signal 118 and for sending the interface of control signal 120 of moving optical system 108.Eye position signal 118 is representing occupant 106 eye position 122.In the embodiment shown, in vehicle 100, arranging alternatively picture pick-up device 124.This picture pick-up device 124 is configured to send the eye position signal 118 of the eye position 122 that is representing occupant 106.Occupant 106 sees the surrounding environment in vehicle 100 fronts through windshield 104.The image information showing by visual field display 102 projects in occupant 106 the visual field via windshield 104 in the time that image display 102 moves.
One aspect of the present invention is to be coupled to pass and rotates in other words multiple optical elements.In the analog visual field display of contact, virtual image should not change on height in the time setting eye movement scope (eyebox).In the time that in the display of the visual field, combiner or primary mirror are reversed simply, this virtual image can in height change and can not guarantee picture analog demonstration of desired that contact in the time of the demonstration of augmented reality.
According to a kind of embodiment, are so a kind of visual field displays 102 at the visual field display 102 shown in Fig. 1, it is in order to adapt to driver 106 the multiple optical elements 112 of eye position 122 coupling ground machinery adjustment.In one embodiment, can be using optical system 108 as supporting multiple optical elements 112 of visual field display 102, for example two machine assemblies to four minute surfaces are passed.In one embodiment, the passing substantial linear of optical system 108 ground is realized.In one embodiment, optical system 108 is also supporting image source 110, for example the have powerful connections display of lamp.In a kind of embodiment further not setting forth, optical system 108 is also supporting (servo-actuated) shrouding disc.In one embodiment, the described device that especially comprises optical system 108 seals substantially dustproofly.In addition in one embodiment, single optical element 112, for example first minute surface 112 of looking towards combinatorial surface along projection axes from occupant can singlely extraly be adjusted with respect to machine assembly (preferably rotatably), especially also can be coupled or beam coupling with passing mechanically moving, this means the movement of optical system along moving track.Additionally, in one embodiment, image source 110 can optical system 108 interior couplings be passed or overturn.Image in image source show can be additionally with pass mobile coupling by software adjust, for example, pass, rotation or convergent-divergent.In one embodiment, machine assembly, namely optical system 108 can with respect to around, be especially provided with flexible mechanical connection portion, for example, be provided with corrugated tube or be similar to the plate section of passing of elevator door with respect to instrument panel surface.
Fig. 2 illustrates according to the schematic diagram of the visual field display 102 of a kind of embodiment of the present invention.The quiescent conditions for occupant's predetermined eye position at the embodiment shown in Fig. 2.Visual field display 102 can be the visual field display 102 of having described in Fig. 1.Optical system 108 comprises an image composer 110 and two optical elements 112.The image information being provided by image composer 110 project on combinatorial surface 104 by two optical elements 112 and therefrom mirror-reflection in occupant's the visual field.Combinatorial surface 104 can be the windshield of vehicle as described in Fig. 1.From image composer 110 through the light path 226 of optical element 112 and combinatorial surface 104 shown which eye position in which radian position, can show exactly the image information being shown by visual field display 102 in other words at.Primary mirror is rotated in this embodiment, and this can cause the variation of the angle (depression angle LDA) with respect to road surface and be unfavorable for contacting analog demonstration.The region that occupant's eyes must be positioned at can be called as eye movement scope.In order to increase eye movement scope, can utilize larger minute surface to obtain static solution, this has the vertical configuration space requirement of raising.Shown in embodiment Fig. 3 below.
Fig. 3 shows the schematic diagram of visual field display 102.Compare at the visual field display 102 shown in Fig. 2, this embodiment has larger optical element 112, makes thus the scope that is called as eye movement scope increase, and for the image information providing can be provided, driver's eyes should be within the scope of this.Spacing between eye position below visual field display is in the time packing state into and the eye position above visual field display is in the time packing state into for example can have 70mm.Compare at the embodiment shown in Fig. 2 the minute surface that the solution requirement of this class static state is larger and therefore there is larger vertical configuration space requirement.In other words, Fig. 3 shows the not static solution of " intelligent mobile " of one, and it has larger minute surface and the corresponding larger vertical ductility with desired structure space.
Fig. 4 shows according to the schematic diagram of the visual field display 102 of a kind of embodiment of the present invention.Show moving track 328, can moving optical system 108 along this moving track.In the embodiment shown in fig. 4, moving track 328 is straight lines, and optical system can be moved linearly.Fig. 5 shows the Linear-moving visual field display 102 shown in Fig. 4 afterwards.
In other words, Fig. 4 shows the side view of the strong simplification of visual field display 102.Windshield 104 is as the combinatorial surface 104 of visual field display 102.Can find out, how the visual field display box with optical element 112 causes the change of eye position along the single-minded passing of linear orbital curve 328.At this, it is essential for " augmented reality ", occupant's visual angle remains unchanged.
Fig. 5 shows according to the schematic diagram of the visual field display 102 of a kind of embodiment of the present invention.Show moving track 328, can moving optical system 108 along this moving track.Compare the schematic diagram shown in Fig. 4,70mm is for example upwards passed in the region that eye position that simply delineate by light path, occupant can place.Linearity still less of optical system 108 pass cause eye movement scope passing amount still less.
Fig. 6 shows according to the schematic diagram of the visual field display 102 of a kind of embodiment of the present invention.Windshield 104 in other words combinatorial surface 104 is bending.Show two positions of optical system 108.Between the two positions, this optical system is passed by linearity and optical element 112 overturns around its central point, thus the curvature of compensation windshield, and make the projection of image information adapt to occupant's eye position.Optical element 112 is connected with the mechanism 630 of at least one optical element 112 of at least two optical elements 112 for moving optical system 108.
In other words, Fig. 6 shows the schematic diagram with bending windshield 104.Show the schematic diagram for " intelligent mobile " principle of bending windshield 104.In order to compensate the curvature of windshield, except passing visual field display box, the first minute surface optical element 112 in other words that can also correspondingly overturn, thus make the angle (LDA) with respect to road surface all keep constant for all eye movement range position.
Fig. 7 shows according to the schematic diagram of the visual field display 102 of a kind of embodiment of the present invention.Windshield 104 in other words combinatorial surface 104 is bending as in Fig. 6.Shown primary importance is equivalent to the situation described in Fig. 4.For the projection that makes image information adapts to higher eye position, in the second place, optical system 108 is passed linearly and is rotated round the central point of optical element.This make on the whole whole optical device along bending track in other words bending moving track 732 be passed.In an illustrated embodiment, optical system is round the central point rotation upset in other words of optical element that is directly arranged in combinatorial surface front in light path.
In the embodiment shown in fig. 7, the passing of visual field display box and rotation stack, make the angle (LDA) with respect to road surface still in all eye movement range position, all keep constant.In principle, the passing of visual field display box not necessarily must realize linearly or flatly, but can adapt to concrete structure space situation.
Fig. 8 shows according to the visual field display of a kind of embodiment of the present invention 102 and the comparison diagram of visual field display that there is no adjustable optical system.Visual field display 102 can be the visual field display 102 described in aforementioned figures.Show primary importance 834, the second place 836 and the 3rd position 838 of the optical system of visual field display 102, wherein the optical system of visual field display 102 is passed linearly between position 834,836 and 838.For identical scope, the namely approximate needed structure of the eye movement scope space Reference numeral 840 of size of the possible eye position that obtains occupant in the situation that there is no adjustable optical system represents.Crucial region 842 interferes with the steering column of vehicle in this case.Be able at this clear and definite, by adjustable optical system can save structure space.
In other words, Fig. 8 illustrates visual field display at intelligent mobile and the structure space not needing intelligent mobile in the situation that comparatively.Primary importance 834 covers nethermost eye movement range position, and eye movement range position and the 3rd position 838 in the middle of the second place 836 covers cover uppermost eye movement range position.The in the situation that of intelligent mobile not, optical element, especially minute surface must design along vertical significantly larger, could cover all eye movement range position simultaneously.This is possible especially in the problem of bringing structure space in the region of steering column.Therefore, win structure space advantageous particularly in the critical area of steering column.
Fig. 9 show according to a kind of embodiment of the present invention, for image information being projected to the occupant's of vehicle the process flow diagram of method 900 in the visual field.The method can be utilized to be had at least two optical systems for the optical element as described in aforementioned figures to combinatorial surface projected image information and implements.The method 900 has the step 902 of moving optical system, thereby makes the projection of image information adapt to occupant's eye position.
Figure 10 shows according to the occupant's of a kind of embodiment of the present invention eye position and changes and the therefore schematic diagram of variation that cause and angle road surface (depression angle LDA).Vehicle 100 has windshield 104.In this vehicle, have occupant not shown further, its eyes can be in different eye position 122.The virtual image 1045 of looking from occupant is shown at vehicle front along travel direction.For the embodiment shown in Figure 10, can so design the rotation of the optical system (representing with Reference numeral 108 there) of describing in aforementioned figures and that carry out or the alternative passing of carrying out simultaneously, thereby make in the time that eye position 122 changes, keep constant with respect to the angle on road surface.Therefore, attach troops to a unit in the first view directions 1044a of the first eye position 1046a with attach troops to a unit in the second view directions 1044b of the second eye position 1046b and attach troops to a unit in the 3rd view directions 1044c parallel orientation of the 3rd eye position 1046c.So make with respect to the angle on road surface, namely LDA or depression angle is constant in the time that eye position 122 is different.
Figure 11 shows according to the schematic diagram of eye position variation a kind of embodiment of the present invention, occupant and variation that therefore cause and angle road surface (depression angle LDA).Vehicle 100 has windshield 104.In this vehicle, have occupant not shown further, its eyes can be in different eye position 122.The virtual image of looking from occupant is shown at vehicle front along travel direction.For the embodiment shown in Figure 11, can so design the rotation of the optical system (representing with Reference numeral 108 there) of describing in aforementioned figures and that carry out or the alternative passing of carrying out simultaneously, thereby make in the time that eye position 122 changes, the upright position of virtual image 1045 in space keeps constant.Therefore, attach troops to a unit in the first view directions 1044a of the first eye position 1046a with attach troops to a unit crossing in a point at virtual image 1045 in the second view directions 1044b of the second eye position 1046b and the 3rd view directions 1044c that attaches troops to a unit in the 3rd eye position 1046c.At this, view directions also always can be interpreted as the optical axial from virtual image.
Observe at the embodiment shown in Figure 10 and Figure 11, the feasible program shown in the two kinds in other words any mixed form between embodiment or transition scheme is all possible.Mainly be can both realize the certain covering to road for all positions of eye movement scope in other words for all eye positions in this target.
In the limit of large virtual image pitch (we in the situation that be approximately 15m), both of these case almost cannot be distinguished (with the spacing EB=15m of virtual image.EB adjusts rate range: vertical, and 40-100mm).
Figure 12 shows according to road a kind of embodiment of the present invention, that contact analog image and covers.Vehicle 100 is on running rail 1248.In this vehicle, have occupant not shown further, this occupant represents with Reference numeral 106 in aforementioned figures.Occupant's eyes in specific eye position 122 and this vehicle there is windshield 104, this windshield works in the display of the visual field.Show virtual image 1045 at virtual image at distance 1250 places in occupant's eye position front.The height 1252 that eye position 122 exceeds running rail 1248 represents local horizon 1254.The boundary of occupant's field range is limited by the upper limit 1256 in the visual field and the lower limit 1258 in the visual field.Scope between the upper limit 1256 and the lower limit 1258 in the visual field can be expressed as the vertical visual field 1260 or for the abbreviation of English concept " field of view ", i.e. vertical FOV.Provide and contact analog demonstration by the minimum coverage distance 1262 of virtual image 1045 by lower limit 1258 and the intersection point of running rail 1248.Provide the largest coverage distance 1264 in the visual field by the upper limit 1256 and the intersection point of running rail 1248.In Figure 12, clearly define the angle 1266 with respect to road surface or running rail 1248.Angle 1266 with respect to road surface is determined by the angle between the centre position 1268 between local horizon 1254 and the upper limit 1256 and lower limit 1258.
Contacting analog demonstration is covered between the lower limit 1258 in the visual field and the intersection point of running rail 1248 and the upper limit in the visual field 1256 and the intersection point of running rail 1248 and is provided by the road of virtual image 1045.
Described and in the accompanying drawings shown in embodiment only exemplarily selected.Different embodiment can fully or about single feature combine mutually.An embodiment also can supplement the feature of another embodiment.In addition can repeat according to method step of the present invention, and carry out according to being different from described order.
If an embodiment comprises that the "and/or" between First Characteristic and Second Characteristic connects, so just explanation, this embodiment not only has First Characteristic according to a kind of embodiment and also has Second Characteristic, and has in other embodiments or only First Characteristic or only have Second Characteristic.

Claims (15)

1. for image information being projected to occupant's (106) the device in the visual field of vehicle (100), wherein said device has following characteristics:
Optical system (108), it has at least one for project the optical element (112) of described image information to combinatorial surface (104); And
For the mechanism (114) of mobile described optical system (108), to make the projection of described image information adapt to the eye position (122) of described occupant (106).
2. according to device claimed in claim 1, the wherein said mechanism (114) for mobile described optical system (108) is configured to move described optical system (108) along moving track.
3. according to device claimed in claim 2, wherein described moving track of structure like this, makes in the time passing described optical system (108), described image information substantially vertical constant position show.
4. according to device claimed in claim 2, wherein so construct described moving track, make in the time passing described optical system (108), described image information shows with vertical constant visual angle (depression angle) substantially.
5. according to the device described in any one of the preceding claims, wherein said optical system (108) has at least two for project the optical element (112) of described image information to combinatorial surface (104).
6. according to the device described in any one of the preceding claims, wherein said optical system (108) has housing, is arranging described at least one optical element (112) in described housing.
7. according to the device described in any one of the preceding claims, wherein said optical system (108) has housing, and described housing also has shrouding disc except described optical element (112).
8. according to the device described in any one of the preceding claims, wherein said optical system (108) has housing, and described housing also has image composer (110) except described optical element (112).
9. according to the device described in any one of the preceding claims, it has the mechanism (114) at least one optical element (112) of described at least two optical elements (112) of mobile described optical system (108).
10. according to the device described in any one of the preceding claims, it has flexible mechanical connection portion, for described optical system (108) and the joint area of the supporting structure of described device and/or the instrument panel of described device are got up.
11. according to the device described in any one of the preceding claims, and wherein said optical system (108) comprises the image source (110) for described image information is provided.
12. according to device claimed in claim 6, and it has the mechanism that moves described image source (110) corresponding to the movement of described optical system (108).
13. according to the device described in any one in claim 6 to 7, wherein can adjust corresponding to the movement of described optical system (108) and/or described image source (110) demonstration of described image source (110).
14. according to the device described in any one of the preceding claims, it has control gear (116), described control gear has interface for reading eye position signal (118) and for sending the interface of control signal (120) of mobile described optical system (108), wherein said eye position signal (118) is representing the eye position (122) of described occupant (106).
15. for projecting image information the method in the occupant's of vehicle the visual field, described method is by optical system (108), described optical system has at least two for project the optical element (112) of described image information to combinatorial surface (104), and wherein said method comprises the following steps:
Mobile (902) described optical system (108), to make the projection of described image information adapt to the eye position (122) of described occupant (106).
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