CN209086550U - A kind of naked eye 3D-HUD display device - Google Patents

Abstract

The utility model discloses a kind of naked eye 3D-HUD display device, including 3D rendering display device and HUD ray machine, the 3D rendering display device includes lighting system, display module and spectro-grating, has transparent medium between the display module and spectro-grating；The naked eye 3D-HUD display device generates pictorial element by display module, the image in display module passes through transparent medium and spectro-grating simultaneously, pass through HUD ray machine again, the HUD information of display is finally projected directly at human visual system, it is merged by human visual system with traffic condition, forms the 3D 3 D visible region in the visual field.The utility model is by spectro-grating in conjunction with HUD ray machine, make driver's direct viewing to stereo-picture, and HUD or stereoscopic display HUD can be shown by plane of free switching according to different demands, image information is accurately incorporated into actual traffic road conditions, the safety of driving is improved.

Description

A kind of naked eye 3D-HUD display device

Technical field

The utility model belongs to automobile product technical field, and in particular to a kind of naked eye 3D-HUD display device.

Background technique

HUD full name is Head Up Display, and Chinese is called head up display, is to make user straight without diverting sb.'s attention The display for checking the information superpositions such as running information navigation is connect, many high-end vehicles have been configured at present, it is by information of vehicles It is projected by screen, is shown in front of driver two meters or so, such driver just does not have to bow to check vehicle when driving Or navigation information.

Either common HUD technology or AR-HUD technology is so that display is shown image using the principle of reflection Amplification is presented in access customer eye, but the image actually seen is all flat image, makes the virtual image and practical scenery of display It can not effectively combine, greatly reduce user experience.

The shortcomings that current vehicle-mounted HUD is to have a single function, and projection distance is short, and the information of vehicles of display is relatively fewer, in automobile Instrument content is had existed, the function with automobile repeats, although there is navigation, display is 2D image, and it is not three-dimensional enough, it is right Not vivid enough the embodiment of running information.

Utility model content

In order to solve the drawbacks described above of the prior art, the utility model provides a kind of naked eye 3D-HUD display device.

The above-mentioned purpose of the utility model is realized by following technical proposals:

A kind of naked eye 3D-HUD display device, including 3D rendering display device and HUD ray machine,

The 3D rendering display device includes lighting system, display module and spectro-grating, the display module and light splitting There is transparent medium between grating；The naked eye 3D-HUD display device generates pictorial element by display module, while showing mould Image in group passes through transparent medium and spectro-grating, then by HUD ray machine, is finally projected directly at the HUD information of display Human visual system is merged by human visual system with traffic condition, and the 3D 3 D visible region in the visual field is formed.

Further, the spectro-grating is the grating that changeable plane shows HUD or stereoscopic display HUD, user according to It is that plane shows HUD or stereoscopic display HUD that different demands, which carry out free switching by electric-controlled switch mode,.

The utility model is using technical solution bring advantageous effects as above: the utility model will be by that will be divided light Grid are combined with HUD ray machine, and driver's right and left eyes is made to receive the image with certain parallax, can direct viewing to perspective view Picture, and according to different demands HUD and stereoscopic display HUD can be shown with free switching plane, image information is accurately combined In actual traffic road conditions, perception of the driver for practical driving environment is enhanced, the safety of driving, Er Qie are improved In the case of not needing stereoscopic display HUD, plane can be switched to zero loss original resolution and show HUD.The utility model may be used also In conjunction with ADAS system so that the information display effect of this enhancing be easier driver is allowed to set up it is this for automatic Pilot The new trust for driving function is also that the automobile intelligent in future drives, unmanned provides an important technical conditions.This is practical Novel spectro-grating can also be compatible with conventional H UD ray machine, and economic production is good, at low cost.

Detailed description of the invention

In order to illustrate more clearly of the utility model embodiment, the required attached drawing of embodiment will be made below simple It introduces, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, skill common for this field For art personnel, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is the structural framing figure of the utility model naked eye 3D-HUD display device；

Fig. 2 is the principle schematic diagram of naked eye 3D-HUD display device described in the utility model one embodiment；

Fig. 3 is the principle schematic diagram of naked eye 3D-HUD display device described in another embodiment of the utility model；

Fig. 4 is the principle schematic diagram of naked eye 3D-HUD display device described in another embodiment of the utility model；

Fig. 5 is the image formation by rays schematic illustration of the utility model naked eye 3D-HUD display device；

Fig. 6 is the 3D rendering display device structure schematic diagram that the utility model one embodiment provides；

Fig. 7 (a) and Fig. 7 (b) is that the spectro-grating that the utility model one embodiment provides is being not powered on form and is being powered Schematic diagram under form；

Fig. 8 is the structural schematic diagram and liquid crystal molecule for the liquid crystal lenticular sheet that the utility model one embodiment provides Deflect schematic diagram.

Wherein, 1- position of human eye, 2- windshield, the first reflecting mirror of 3-, 4- display module, the second reflecting mirror of 5-, 6- points Light grating, 7- transparent medium, 8- lighting system, the 9- spectro-grating virtual image, the 10- display module virtual image, 11- third reflecting mirror.

Specific embodiment

Here, it is to be noted that, the utility model relates to function, method etc. be only the prior art conventional adaptation Using.Therefore, improvement of the utility model for the prior art, the connection relationship being substantially between hardware, rather than it is directed to function Can, although method itself namely the utility model be related to some functions, method, but and do not include and propose to function, method itself Improvement.Description of the utility model for function, method is in order to better illustrate the utility model, preferably to manage Solve the utility model.

The utility model is described in detail with reference to the accompanying drawings and examples, herein by the reality being described with reference to the drawings Example is applied to be exemplary, it is intended to for explaining the utility model, and should not be understood as limiting the present invention, i.e., it is described Embodiment be the utility model a part of the embodiment, instead of all the embodiments, in the absence of conflict, in the application Embodiment and embodiment in feature can be combined with each other.

A kind of naked eye 3D-HUD display device provided by the utility model, main technical schemes are using special designing 3D rendering display device, and combine HUD ray machine (HUD ray machine can be W type HUD ray machine, can also be c-type ray machine), it can it realizes Driver watches the HUD imaging system with stereo display effect.

As shown in Figure 1, a kind of structural framing figure of naked eye 3D-HUD display device provided by the utility model, mainly includes Inductor system, image control processing system, 3D rendering display device, HUD ray machine and human visual system.Wherein, inductor System is connected with image control processing system, and image control processing system is connected with 3D rendering display device.Inductor system System is sent to image control processing system for receiving external information and user behavior data.Image control processing system pair The external information and user behavior data received carries out processing output virtual image to 3D rendering display device, the image of display Right and left eyes are needed to can receive identical image or different according to different at the amplification virtual image in front of human eye by HUD ray machine Image.

Inductor system includes infrared sensor, gravity sensor, pressure sensor, photosensitive sensors or to environment, row One of sensor for detection is a variety of, can be according to specifically needing to select corresponding sensor.

Image control processing system includes CPU, GPU etc., can be to the external information and user behavior data (one received The virtual image of series such as oil mass, speed per hour, vehicle condition, environmental aspect, pavement behavior, the navigation information of camera acquisition etc.) Processing is extracted, and whether stereoscopic display HUD is needed according to user, carries out row's figure according to spectro-grating again, and be output to 3D rendering display device (display module).

As shown in Figures 2 to 6, the 3D rendering display device of the utility model design mainly includes lighting system 8, display mould Group 4 and spectro-grating 6, have transparent medium 7 between the display module 4 and spectro-grating 6.Wherein, transparent medium 7 is selected high saturating The transparent medium of light rate, for controlling spectro-grating at a distance from display module pixel, as transparent medium can select glass, One of PMMA, PC or air are also possible to vacuum.Display module can select TFT display screen, DLP display screen or LCOS One of display screen.

As shown in figure 5, the main operational principle of the utility model naked eye 3D-HUD display device is: raw by display module Image at pictorial element, while in display module passes through transparent medium and spectro-grating, then by HUD ray machine, will finally show The HUD information shown is projected directly at human visual system, is merged by human visual system with traffic condition, forms the visual field Interior 3D 3 D visible region.

The HUD ray machine of the utility model design is W type HUD ray machine or c-type HUD ray machine.

When HUD ray machine is W type HUD ray machine, as shown in Fig. 2, W type HUD ray machine mainly includes the first reflecting mirror 3, second Reflecting mirror 5 and windshield 2, spectro-grating 6 is thrown incoming image and is mapped on the second reflecting mirror 5 by the first reflecting mirror 3, then leads to It crosses the second reflecting mirror 5 to project on windshield 2, the HUD information of display is projected directly at human eye eventually by windshield 2 Vision system is merged by human visual system with traffic condition, and the 3D 3 D visible region in the visual field is formed.3D is schemed As display device, the first reflecting mirror 3 and the second reflecting mirror 5 are set to the lower section of windshield 2, to avoid sight is blocked.

When HUD ray machine is c-type HUD ray machine, shown in Fig. 3, Fig. 4, c-type HUD ray machine mainly includes third reflecting mirror 11, described Spectro-grating 6 is thrown incoming image and is directly projected to human visual system by third reflecting mirror 11, passes through human visual system It is merged with traffic condition, forms the 3D 3 D visible region in the visual field.

Further, the first reflecting mirror described above is plane mirror, spherical reflector, non-spherical reflector or freedom One of curved reflector, the second reflecting mirror and third reflecting mirror are spherical reflector, non-spherical reflector or free form surface Reflecting mirror.

The embodiment of W type HUD ray machine described above or c-type HUD ray machine is only a part of the embodiment of the utility model, and It is non-that it is limited.Further, number of mirrors included in the W type HUD ray machine or c-type HUD ray machine can also be three A, four or more combination, the independent assortment that those of ordinary skill in the art are carried out according to the actual situation, these are all It should belong to the protection scope of the utility model.

Further, the visible area width that the utility model is formed is 80~160cm, is highly 35~70cm.It is described Display HUD information, which is broadly divided into out, shields and enters screen, shields receive image parallactic by row's figure adjustment right and left eyes into screen effect distance out To realize.

A preferred embodiment as the utility model keeps user free to realize the different demands of user Switching surface HUD and stereoscopic display HUD, i.e., need right and left eyes to can receive identical image or different figure according to different Picture, the utility model spectro-grating show the grating of HUD or stereoscopic display HUD using changeable plane, and user is according to different need Asking and carrying out free switching by electric-controlled switch mode is that plane shows HUD or stereoscopic display HUD.

In the present embodiment, the spectro-grating can select liquid lens grating, liquid crystal slit grating or liquid crystal lens One of grating, when using such grating, driver does not need viewing stereoscopic effect and only needs to cut by electric-controlled switch mode It changes, 2D effect will not lose resolution ratio when watching, the safety more conducively driven.In addition, the spectro-grating can also be selected Common slit grating, lenticular sheet, trapezoidal grating or triangular grating etc. are one such, when using such grating, Driver does not need viewing stereoscopic effect, then allows right and left eyes to receive identical image, it is (above-mentioned that screen resolution has partial loss Common slit grating, lenticular sheet, trapezoidal grating or triangular grating can be very good protection light if having filling Grid shape prevents from being destroyed, and as the grating for not having filling, the two can reach identical spectrophotometric result).

In the present embodiment, the electrode material of spectro-grating is mainly ITO but it is also possible to be other transparent electrode materials, It is mainly preferred according to oriented layer frictional direction, corresponding polaroid polarization direction and electrode pattern, the utility model implementation Using the following two kinds, i.e. liquid crystal slit grating and liquid crystal lens grating.Wherein, the basic principle of liquid crystal slit grating are as follows: not Original state in the case where energization can be according to needing to be set as light transmission or opaque, liquid crystal molecule after energization at electrode Deflection just becomes opaque after being powered, in lighttight feelings such as electrode original state light transmission by original state inverse change Become normal slit grating beam splitting under condition and see 3D effect, light transmission situation is that 2D is shown, no resolution loss.Such as Fig. 7 (a) and figure Shown in 7 (b), liquid crystal lens grating selects liquid crystal lenticular sheet, the basic principle is that: it is not powered on situation in this way Under, liquid crystal molecule does not deflect, and shows state for 2D, the inconsistent electric field of entire liquid crystal layer distribution intensity, liquid crystal after being powered Molecule deflection angle is inconsistent, generates refringence and is divided to play lens effect, and right and left eyes reception is made not share the same light Line.Fig. 8 show the structural schematic diagram of liquid crystal lenticular sheet and its in energization liquid crystal molecule deflection schematic diagram.

The above are using liquid crystal grating implementation method, there are also set color changing material using electricity and do electrode implementation to be cut It changes, this kind of mode is directly changed electrode color and realizes slit grating effect.

In another preferred embodiment of the utility model, d is placed at a certain distance for display module and spectro-grating, institute D is stated to determine by following formula:

D=n*ls-n*lv

=n*ls-n*f* (D*l ' s-le*P '-pitch)/(D+P '-pitch)/[f+ (D*l ' s-le*P '-pitch)/(D +P'-pitch)]；

Wherein, n is refractive index of transparent medium (selecting medium to determine by design), and ls is display module distance HUD ray machine Distance (being determined by selection ray machine), lv are the distance of spectro-grating distance HUD ray machine, and f is HUD ray machine focal length (by the HUD selected Optical-mechanical system determines), D is people's eye pupil pitch of holes, and l ' s is display module virtual image distance (by selecting HUD ray machine to determine), and le is eye For eyeball to the distance (being determined by vehicle situation itself) of HUD ray machine, P '-pitch is that the display module pixel virtual image period is (aobvious by selecting Show that mould group and Designing vision point determine, general two viewpoints vertical display grating covers 2 main pixels but it is also possible to be multiple pixels).

Further, spectro-grating parameter is calculated by following formula:

Spectro-grating virtual image distance l ' v-------l ' v=(D*l ' s-le*P '-pitch)/(D+P '-pitch)；

Spectro-grating is from HUD ray machine distance lv------

Lv=f* (D*l ' s-le*P '-pitch)/(D+P '-pitch)/[f+ (D*l ' s-le*P '-pitch)/(D+P '- pitch)]；

Spectro-grating virtual image period L '-pitch are as follows:

L '-pitch=P '-pitch* [le+ (D*l ' s-le*P '-pitch)/(D+P '-pitch)]/(le+l ' s).

Further, spectro-grating design parameter is as follows:

Display module pixel row's figure period P-pitch=ls/l ' s*P '-pitch；

The placement distance of display module and spectro-grating is d:

D=n*ls-n*lv=n*ls-n*f* (D*l ' s-le*P '-pitch)/(D+P '-pitch)/[f+ (D*l ' s-le* P'-pitch)/(D+P'-pitch)]；

Spectro-grating period L-pitch are as follows:

L-pitch=L '-pitch*lv/l ' v=P '-pitch* [le+ (D*l ' s-le*P '-pitch)/(D+P '- pitch)]/(le+l’s)*f*(D*l’s-le*P’-pitch)/(D+P’-pitch)/[f+(D*l’s-le*P’-pitch)/(D +P’-pitch)]/(D*l’s-le*P’-pitch)/(D+P’-pitch)。

It is general more using being fv=d if it is lenticulation then grating focal length 0.5d < fv < 2d itself.

To guarantee that eyes can see different images, both spectro-grating can be correctly divided, spectro-grating virtual image period and display The mould group pixel virtual image period should meet following relationship:

L '-pitch/P '-pitch=(le+lv ')/(le+ls ')

Screen can be obtained by above-mentioned relation formula and the aerial placement distance d of grating is empty:

D=n*d is empty.

But it because most ray machines in practical applications need different HUD optical-mechanical systems using off-axis design, calculates Distance lv, ls of d out, display module, spectro-grating and distance HUD ray machine have slight difference, need design and simulation true Periodical repair positive divisor k, different HUD optical-mechanical system k is also not necessarily equal.

It can be obtained by upper formula, spectro-grating and display module distance d, the period L-pitch of spectro-grating, display module Pixel row's figure period P-pitch.

Finally, being obtained most by display module pixel row figure period p-pitch in conjunction with spectro-grating angle and viewpoint number Row's figure period eventually, and row's figure is carried out using routine naked eye 3d algorithm.

In the present invention, viewpoint number is that design is determining, and usually 2~9, spectro-grating tilt angle is by passing through Determination is tested, general is preferably 0 ° or 60~80 °.

The above are the preposition grating of HUD (i.e. grating is shown in front of screen in TFT) design methods, compare normal naked eye 3D display Device screen periods L-pitch is less than P-pitch, and the screen periods L-pitch of general HUD naked eye 3D display device is less than row's figure Pixel period P-pitch, it is just opposite with normal naked eye 3D display device.HUD postposition grating is designed also according to similar approach, and one As postposition grating HUD naked eye 3D display device screen periods L-pitch be greater than row figure pixel period P-pitch, with common postposition Both naked eye 3D display device and preposition HUD display are opposite.

The way of the utility model naked eye 3D combination HUD optical technology, is amplified, image superposition by HUD.Naked eye type 3D skill The maximum advantage of art is to get rid of the constraint of glasses, does not need wearing spectacles, is capable of the visual enjoyment of significant increase 3D viewing With drive to experience, meanwhile, and the environmental sensor and GPS data of driver assistance system, map data and drive dynamic number According to establishing close net connection.

In conclusion according to the principle of naked eye 3D, to realize the function of 3D-HUD, necessary not only for hard

The support of part, it is also necessary to which software carries out particular algorithm processing to the image of display.3D effect in the utility model Algorithm needs the display image to right and left eyes to scheme period, spectro-grating tilt angle and view according to row using row's nomography Points are arranged, while the parallax size of two width figures is adjusted according to the actual environment position that needs are superimposed.Such as by above public It is 6 that formula, which calculates pixel p itch, and tilt angle is 0 °, then first arranges three pixel left figure images, then arranges three pixel right figure figures Picture arranges repeatedly, and suitably can be to left and right figure resolution processes to horizontal resolution according to the size of screen point resolution ratio Screen half, then according to distance to be shown is needed, appropriate offset two images position achievees the purpose that adjust parallax.

When naked eye 3D is that human eye is seen to the same direction, the image different into people's right and left eyes, and image are projected

Visual difference effect is generated in human eye, after human eye synthesizes final image by the image that brain sees two eyes Just stereoscopic effect is generated, therefore two pictures to be shown must be synthesized one by algorithm by software, and by adjusting calculation Method realizes the distance of the image of display, size, and shift length could finally realize 3D- along with special smooth film is by refraction HUD function.In order to realize 3D-HUD navigation feature, software allows for parsing navigation information, according to algorithm, believes navigation Breath carries out synthesis and shows.In order to adapt to the brightness of environment light under outdoor environment, software also wants that display backlight can be automatically adjusted.

3D-HUD technology has used enhancing perspective plane, generates pictorial element by digital micromirror elements, while being imaged on curtain Image pass through the final directive windshield of reflecting mirror.Display information after enhancing can directly be incident upon user's field-of-view angle Road on show three-dimensional 3D rendering, and then merged with traffic condition.

In the description of the present application, it is to be understood that term " first ", " second " etc. are used for description purposes only, without It can be interpreted as indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic.In the utility model In description, the meaning of " plurality " is two or more, unless otherwise specifically defined.

In this application unless specifically defined or limited otherwise, the terms such as term " connected ", " connection ", " fixation " are answered It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be electrical connection；It can be with It is to be connected directly, the connection inside two elements or the phase of two elements can also be can be indirectly connected through an intermediary Interaction relationship.For the ordinary skill in the art, it can understand that above-mentioned term is practical at this as the case may be Concrete meaning in novel.

In the specification of the utility model, numerous specific details are set forth.It is to be appreciated, however, that the reality of the utility model Applying example can practice without these specific details.In some instances, well known method is not been shown in detail, is System and technology, so as not to obscure the understanding of this specification.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, system, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and is necessarily directed to identical embodiment or example.Moreover, specific features, system, material or the feature of description can be with It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into Row combination and combination.

Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations. Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that, It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc. With replacement, and these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution The spirit and scope of scheme.

Claims (10)

1. a kind of naked eye 3D-HUD display device, including 3D rendering display device and HUD ray machine, which is characterized in that

The 3D rendering display device includes lighting system, display module and spectro-grating, the display module and spectro-grating Between have transparent medium；

The naked eye 3D-HUD display device generates pictorial element by display module, while the image in display module passes through thoroughly Bright medium and spectro-grating, then by HUD ray machine, the HUD information of display is finally projected directly at human visual system, is passed through Human visual system is merged with traffic condition, forms the 3D 3 D visible region in the visual field.

2. naked eye 3D-HUD display device according to claim 1, which is characterized in that

The spectro-grating is the grating that changeable plane shows HUD or stereoscopic display HUD.

3. naked eye 3D-HUD display device according to claim 2, which is characterized in that

The spectro-grating is one of liquid lens grating, liquid crystal slit grating or liquid crystal lens grating.

4. naked eye 3D-HUD display device according to claim 1, which is characterized in that

The HUD ray machine is W type HUD ray machine or c-type HUD ray machine；

When HUD ray machine is W type HUD ray machine, the W type HUD ray machine includes the first reflecting mirror, the second reflecting mirror and the glass that keeps out the wind Glass, the 3D rendering display device, the first reflecting mirror and the second reflecting mirror are set to below windshield, to avoid view is blocked Line；Spectro-grating is thrown incoming image and is mapped on the second reflecting mirror by first reflecting mirror, then is thrown by the second reflecting mirror It is mapped on windshield, the HUD information of display is projected directly at human visual system eventually by windshield；

When HUD ray machine is c-type HUD ray machine, the c-type HUD ray machine includes third reflecting mirror, and the third reflecting mirror will be divided light Grid throw incoming image and are directly projected to human visual system.

5. naked eye 3D-HUD display device according to claim 2, which is characterized in that

The naked eye 3D-HUD display device further includes inductor system and image control processing system, the sense

Device system is answered to be connected with image control processing system, described image control processing system is connected with 3D rendering display device It connects；

The inductor system is sent to image control processing system for receiving external information and user behavior data；

Described image control processing system for handling the external information and user behavior data that receive, and according to Whether family needs stereoscopic display HUD, carries out row's figure according to spectro-grating, and be output to display module.

6. naked eye 3D-HUD display device according to claim 1, which is characterized in that

The transparent medium selects the transparent medium of high transparency, for control spectro-grating and display module pixel away from From.

7. naked eye 3D-HUD display device according to claim 1, which is characterized in that

The display module is one of TFT display screen, DLP display screen or LCOS display screen.

8. naked eye 3D-HUD display device according to claim 4, which is characterized in that

First reflecting mirror is one in plane mirror, spherical reflector, non-spherical reflector or free-form surface mirror Kind；Second reflecting mirror and third reflecting mirror are spherical reflector, non-spherical reflector or free-form surface mirror.

9. naked eye 3D-HUD display device according to claim 5, which is characterized in that

The inductor system includes infrared sensor, gravity sensor, pressure sensor, photosensitive sensors or to environment, row One of sensor for detection is a variety of.

10. naked eye 3D-HUD display device according to claim 5, which is characterized in that

The spectro-grating is arranged at a certain angle, the angle ranging from 0 ° or 60~80 °.