CN101876753A - The blending illumination system of head-up display - Google Patents
The blending illumination system of head-up display Download PDFInfo
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- CN101876753A CN101876753A CN 201010201532 CN201010201532A CN101876753A CN 101876753 A CN101876753 A CN 101876753A CN 201010201532 CN201010201532 CN 201010201532 CN 201010201532 A CN201010201532 A CN 201010201532A CN 101876753 A CN101876753 A CN 101876753A
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Abstract
The present invention discloses a head-up display that comprises blending illumination system.Mixed light unit provides the light source of an abundant homogeneous to the reflective display unit.Surround lighting is collected in the collecting optical opticas unit, and with its guiding mixed light unit.Simultaneously, the light that sends of electric driving light source also is directed to mixed light unit.One or more optical elements lead mixed light unit so that homogenising with surround lighting and light source light.Light focusing unit receives even mixed light and exports polymerization light to a polarizing beam splitter.Utilize the information of an electric signal source, the reflective display modulation is also transmitted back polarizing beam splitter from the light of polarizing beam splitter.Polarized light sees through projection lens unit and sets up an image on windshield.
Description
[technical field]
The present invention relates generally to head-up display (head-up display), particularly the illuminator of head-up display.
[background technology]
Head up display (HUD) is with the system of image projection on a visible surface, the position at this visible surface place allows the observer to remain a posture, the height of display or instrument panel roughly becomes level with observer's eyes, the attitude that allows the observer remain to look squarely, and do not need to bow to watch.Head-up display can be used for the material circumstance that various environment such as motor vehicles, aircraft, the helmet and other observer can not disperse it to watch attentively.
Although head-up display is applicable to this environment, distinguish under the bright light environments optical condition that sometimes image can be very difficult.Therefore, the display that need be able under high ambient light condition, watch easily.Before this, aspect the surround lighting of collecting head-up display many effort are being arranged.WO 95/13557 is an example of this head-up display, and it uses a surround lighting light source in display, and its projection image is on windshield.Equally, at United States Patent (USP) 4,997,263 and 7,430,349 li of United States Patent (USP)s, also be polymerization surround lighting and another light source.Although all be to use surround lighting and another light source, the former has lower surround lighting collection efficiency, and the latter relates to complicated collection optical fiber.In addition, these two light sources of these two patent polymerizations but all do not provide a uniform source of light to be used for showing.
Therefore, need to improve the light source of head-up display, make it can either provide enough display brightness can provide a uniform source of light to be used for showing again, under high ambient light condition, clearly watch so that can allow.
[summary of the invention]
The present invention is a head up display (HUD), surround lighting that its utilization comes from the outside and the image that is used to throw light on and is projected from the visible light of electric light source.It comprises light harvesting unit, the first beam-shaping optical unit, the second beam-shaping optical unit, mixed light unit, light focusing unit, polarization beam apparatus (PBS), reflective display unit, projecting cell, light-diffusing film and a light source.According to the position of each assembly, can optionally use catoptron to change the light path warp.In addition, it can also comprise a brightness booster and a pre-device (pre-polarizer) partially.
Surround lighting is collected from the external world in the light harvesting unit, and with its axle that is directed to the light harvesting unit again, makes it drop in the predetermined cone angle (cone angle).In first embodiment of the invention, the wherein axle of light harvesting unit and the spindle balance and the coincidence of the first beam-shaping optical device, the light of being integrated by the light harvesting unit is directly imported in the first beam-shaping optical unit.In second embodiment of the invention, wherein the axle of the axle of light harvesting unit and the first beam-shaping optical device is not a balance, and the light of being integrated by the light harvesting unit is directed in the beam-shaping optical unit by a reflector element.The function of the first beam-shaping optical unit is the surround lighting that collimation is collected, and by a catoptron with its mixed light unit that leads.
Pass the beam-shaping optical unit from the visible light of light source and be used for collimation.Subsequently, the collimated light of beam-shaping optical unit is directed to mixed light unit by a catoptron.
All light that mixed light unit is mixed and the homogenising mixed light unit is interior, and control the scattering angle that will be projected to the mixed light on the reflective display unit, make the reflective display unit receive even illumination.Then, the mixed light that comes out from mixed light unit is directed to light focusing unit, then its with photoconduction to PBS.
If comprise a pre-device partially, the optimum position of its installation should be between light focusing unit and PBS.Pre-device partially make only have PBS to stop the light of polarization state to be through towards meeting.Therefore, will on PBS, be reflected to the reflective display unit from the pre-transmitted light of device partially.At PBS, the light with special polarization is reflected fully, and the light of cross polarization is through.Then, the light arrival reflective display unit that is reflected and leaves PBS.The reflective display unit, it has a vision signal to import as it between the operation operating period, rotates modulating the incident light by polarization.Reflected light has comprised that PBS stops polarization state and the PBS light by polarization state.The light of PBS by polarization state is only arranged, as image light, just can be transferred to projection lens unit, the result by PBS, to diffusion barrier, it forms a true picture and is reflected on the windshield and enters the observer visual field projection lens unit then from image of vision signal projection.
[description of drawings]
Fig. 1 describes a head-up display that merges surround lighting of one embodiment of the invention.
Fig. 2 describes an outside synoptic diagram that merges the head-up display of surround lighting of one embodiment of the invention.
Fig. 3 describes the optical device synoptic diagram in the head-up display embodiment of the present invention.
Fig. 4 describes the internal structure of Fig. 2 head-up display.
Fig. 5 is an outside synoptic diagram that merges the head-up display of surround lighting of another embodiment of the present invention.
Fig. 6 describes the internal structure of Fig. 5 head-up display.
[detailed Description Of The Invention]
In the accompanying drawing, duplicate numbers is represented identical or similar feature in each synoptic diagram.Fig. 1 describes the synoptic diagram of a head-up display 10 of one embodiment of the invention.As shown in Figure 1, the present invention collects surround lighting to be used for strengthening the display brightness in the head-up display.The visible light of surround lighting and electric driving light source such as light emitting diode (LED) or laser diode condenses together, and is used for forming the image that a width of cloth has the level of highlighting.
When the present invention is used for the described vehicle of Fig. 1, an image 20 that is formed by head up display (HUD) unit 10 will be projected on the diffusion barrier 220, and be reflected on the windshield 30, and it allows the driver see then.Selectively, the HUD unit can be installed in the top of instrument panel, because can constitute minimum obstacle to the visual field of driver's front end like this.In addition, the HUD unit also can be placed in other correct position of vehicle, as partly or wholly being installed on the instrument panel car body top etc.
The outside synoptic diagram of HUD unit 10 as shown in Figure 2.Surround lighting enters unit 10 by window 40, and the outlet of projection optical device is at projector window 50.Because the compact design of HUD unit 10, the installation after sale on vehicle very letter are finished with holding.In this case, HUD 10 can form part navigation/gps system, and it can be installed on any vehicle with holding in letter.
The optical device synoptic diagram that is used for one embodiment of the invention is described in Fig. 3.As shown in Figure 3, surround lighting and from the light of light source such as one or more LED/ laser is aggregated to form a single uniform source of light and is used in the HUD.Surround lighting 100 enters collecting optical opticas unit 110, then selectively, by mirror 120 reflections, carries out shaping by the first beam-shaping optical unit 130 again.Surround lighting is collected in collecting optical opticas unit 110, and guides it to make in its cone angle that drops on an appointment again.Collecting optical opticas unit 110 can be selected from various optical devices, as photoconduction, non-spherical lens and Fresnel lens.But this tabulation is not restrictive, any can collect effectively and delivery context light can replenish to the optical devices of HUD and is used for the present invention.
Beam-shaping optical unit 130 can comprise one group of conjugated lens (conjugated lenses) or TIR lens.The purpose of beam-shaping optical unit 130 is surround lightings that collimation is assembled before light is directed to light mixing device.
Another light source 140 is used to launch light, so that the surround lighting polymerization of collecting with collecting optical opticas unit 110.Light source 140 can be a monochromatic LED, multi-colored led, laser, incandescent lamp, Halogen lamp LED, arc lamp or the illuminator of any other sufficient light liquid crystal cell or any combination of above illuminator.
Then, the light of light source 140 enters the second beam-shaping optical unit 150.When using an optional feedback control system, the light intensity of light source is to adjust according to the ambient light intensity of collecting.The purpose of the second beam-shaping optical unit is at the light with photoconduction collimated light source before mixed light unit 170.
The arrangement of catoptron 160 and make the light of light source 140 and the surround lighting of collection be directed to mixed light unit 170 towards meeting.Catoptron 160 can comprise level crossing, curved mirror, right-angle prism or a plurality of above lens and/or a plurality of above combination of lenses.Catoptron 160 can be an individual unit or as two or more separate units.Catoptron also can be replaced by right-angle prism or other optical device, as long as it can change direction of light.
For liquid crystal cell, the uniformity coefficient of incident light is very important, and mixed light unit 170 can be selected from various devices, if light and surround lighting that it can hybrid light source 140, and export a full and uniform light beam.This class device includes but not limited to integration optical wand (integrating rod) or grand focal length optical collector (macrofocal concentrator).The example of grand focal length optical collector comprises compound parabolic concentrator (CPC), compound ellipsoid condenser (CEC) and Composite Double curved surface condenser (CHC).But, any can evenly mix these two light sources and provide one evenly the optical element of output can replenish as mixed light unit 170 of the present invention.For the further homogenising of the light of enhance ambient light and light source 140, utilize mixer, the sidewall of mixed light unit can diversity ground reflected light.In mixed light unit, gathering and surround lighting collimation with mix from the collimated light of light source 140.The function of mixed light element is to mix and homogenising all light in the mixed light element, and control will be projected to the spread angle of the mixed light on the reflective display unit.As a result, from mixed light element output only by full and uniformization.
Then, the mixed light that comes out from mixed light element 170 enters in the light focusing unit 180.Light focusing unit 180 can comprise one group of conjugated lens or one group of free-form surface lens.Selectively, if pre-device (pre-polarizer) is partially arranged, to pre-device partially, otherwise mixed light is directed to polarizing beam splitter (PBS) 190 in case come out to light focusing unit from light focusing unit 180 with hybrid lightguide.
The arrangement of pre-device partially and make only have PBS to stop the light of polarization state (blockpolarization) to be through towards meeting.Therefore, see through the pre-light of device partially and will on PBS, be reflected to reflective display unit 200.
On PBS 190, the light with special polarization is reflected fully, and the light with cross polarization is through.Polarization can be line style, round or cholesteric (cholesteric).The example of line style polarizer comprises polymer multi-layer polarizing coating (polymeric multiple layer polarizing film) or wire-grid polarizer (wire grid polarizer) is arranged.Will be noted that, use cholesteric polarizer also may need to introduce four partial wave delayers, so as between line style and round polarization convert light.For example, if the reflective display unit moves on the line style polarized light, and the light of light source also is linear polarization, and cholesteric polarizer can have one four partial wave retardation layer on its front surface so, so that reenter the surface that is mapped to cholesteric polarizer after making the light circular polarization.In addition, four partial wave delayers propagate into the reflected image display unit after can making the linear polarization of reflected light again.If from the only circular polarization of light source, in the input of reflected image display unit, one four partial wave delayer can be arranged so, thereby make the light polarization of cholesteric polarizer reflection.In addition, PBS 190 can be smooth or crooked on one or more directions.
Light with prevention polarization state (block polarization) of PBS will be reflected on PBS 190, and will advance to reflective display unit 200.The reflective display unit can be a LCD (LCD) unit, handles (DLP) display or any other suitable display unit as liquid crystal on silicon (LCoS) display, digital light.When the present invention moves, a vision signal is input to reflective display unit 200, this vision signal may be from a GPS unit, navigation elements, one or more dash unit (as velograph, sillometer, fuel level gauge), airborne computer or anyly can produce the device that suitable vision signal is used for the reflective display unit and produce.Reflective display unit 200 can ground, space modulating the incident light by the polarization rotation.Reflected light comprises that PBS stops polarization state and PBS to pass through the light of polarization state (pass polarizations).Only PBS 190 as image light, will be transferred to projector unit 210 by the light of polarization state by PBS.
As shown in Figure 1, projector unit 210 projected image light are on diffusion barrier 220.Diffusion barrier can be connected to projector unit.A real mirror image will form by diffusion barrier, and this substantial mirror image will be reflected on windshield and enters the observer visual field.The use that is appreciated that diffusion barrier 220 is optionally, reflective display 200 and projection optical device can be set so that directly a suitable images directly is shown on the windshield from projector unit 210.
Fig. 4 describes the internal configurations of the optical element of Fig. 2 head-up display 10.Fig. 4 element is similar to those elements shown in Figure 3, shown in the corresponding elements number.
Fig. 5 describes the outside synoptic diagram of a horizontal embodiment 10 of head-up display of the present invention.As embodiment before, surround lighting enters window 40, and image light is to come out from projection mouth 50.Fig. 6 is described in the optical element configuration of head-up display 10 inside.Fig. 6 element is similar to those elements shown in Figure 3, shown in the corresponding elements number.As shown in Figure 6, the configuration that is used for the collecting optical opticas device 110 of surround lighting allows HUD highly to be lower than the height of Fig. 2 HUD.This embodiment is specially adapted to be installed on the Vehicular instrument panel after sale, because it more can provide better view.
Should be appreciated that the physical location of said elements of the present invention and towards adjusting to change size of images, brightness and sharpness.
Although the present invention has described the head up display (HUD) unit that is used to show relevant driving information such as car speed, engine speed (rpm) and GPS (GPS) data that aims at the motor vehicles design in context, should be appreciated that, the present invention is equally applicable to the head-up display under other vehicles connotation, as aircraft and boats and ships.In addition, the present invention is equally applicable to other situation that need strengthen illumination, as helmet display unit or micro projector.
Although described the particular embodiment of the present invention, should be appreciated that the present invention is not subject to concrete structure described herein, from making various modifications, change and variation to it significantly with foregoing description.These modifications, change and conversion are counted as the part of the scope of the invention of setting forth in the claims.
Claims (19)
1. blending illumination system that is used for head-up display comprises:
A mixed light unit is used to provide the reflective display unit of the light source of an abundant homogeneous (homogenous) to head-up display;
A collecting optical opticas unit is used to collect surround lighting, and with the surround lighting guiding mixed light unit of collecting;
An electric driving light source is used to launch the light that will be directed to mixed light unit;
One or more optical elements are used for photoconduction that the surround lighting that will collect and electric driving light source send to mixed light unit, and the light that makes the surround lighting collected and electric driving light source send is incided mixed light unit fully.
2. the blending illumination system of head-up display according to claim 1, also comprise the beam-shaping optical device, it is positioned between collecting optical opticas unit and the one or more optical element, is used for the light that the surround lighting that will collect and electric driving light source send and is indicated to mixed light unit.
3. the blending illumination system of head-up display according to claim 1, also comprise the beam-shaping optical device, it is positioned between electric driving light source and the one or more optical element, is used for the light that the surround lighting that will collect and electric driving light source send and guides to mixed light unit.
4. the blending illumination system of head-up display according to claim 1, wherein mixed light unit is an integration optical wand.
5. the blending illumination system of head-up display according to claim 1, wherein mixed light unit is a grand focal length condenser.
6. the blending illumination system of head-up display according to claim 1, wherein the collecting optical opticas unit is an optics light pipe.
7. the blending illumination system of head-up display according to claim 1, wherein the collecting optical opticas unit is a non-spherical lens.
8. the blending illumination system of head-up display according to claim 1, wherein the collecting optical opticas unit is a Fresnel lens.
9. the blending illumination system of head-up display according to claim 1, wherein electric driving light source is one or more LED or one or more laser diode.
10. head-up display that comprises blending illumination system comprises:
A mixed light unit is used to provide the reflective display unit of the light source of an abundant homogeneous (homogenous) to head-up display;
A collecting optical opticas unit is used to collect surround lighting and with the surround lighting guiding mixed light unit of collecting;
An electric driving light source is used to launch the light that will be directed to mixed light unit;
One or more optical elements are used for the light that the surround lighting that will collect and electric driving light source send and are directed to mixed light unit, and the light that makes the surround lighting collected and electric driving light source send is incided mixed light unit fully;
A light focusing unit, it receives the light that is sent by mixed uniformly collection surround lighting and electric driving light source, and output polymerization light to a polarizing beam splitter;
A reflective display is used to receive the light from polarizing beam splitter, and utilizes the information of an electric signal source, is provided with the light of modulation from polarizing beam splitter, and this reflective display also is configured to light modulated reflected back polarizing beam splitter;
A projection lens unit is used for the projection light modulated to produce an image at windshield.
11. the head-up display that comprises blending illumination system according to claim 10 also comprises a diffusion barrier, is used to receive the light modulated from projection lens unit, and light modulated is reflexed on the windshield.
12. the head-up display that comprises blending illumination system according to claim 10, wherein reflective display is liquid crystal on silicon (LCoS) display or a digital optical processing (DLP) display.
13. the head-up display that comprises blending illumination system according to claim 10, also comprise the beam-shaping optical device, it is placed between collecting optical opticas unit and the one or more optical element, is used for the light that the surround lighting that will collect and electric driving light source send and is directed to mixed light unit.
14. the head-up display that comprises blending illumination system according to claim 10, also comprise the beam-shaping optical device, it is placed between electric driving light source and the one or more optical element, is used for the light that the surround lighting that will collect and electric driving light source send and is directed to mixed light unit.
15. the head-up display that comprises blending illumination system according to claim 10, wherein electric driving light source are one or more LED or one or more laser diode.
16. the head-up display that comprises blending illumination system according to claim 10, wherein the collecting optical opticas unit is optics light pipe, non-spherical lens or a Fresnel lens.
17. the head-up display that comprises blending illumination system according to claim 10, wherein mixed light unit is an integration optical wand or a grand focal length condenser.
18. a motor vehicle navigation system that comprises head-up display comprises one according to the described blending illumination system of claim 10.
19. a motor vehicle navigation system that comprises head-up display comprises one according to the described blending illumination system of claim 10, wherein navigational system comprises GPS.
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| CN2010102015323A CN101876753B (en) | 2010-06-03 | 2010-06-03 | Mixed illumination system of head-up display |
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| CN103998971A (en) * | 2011-12-15 | 2014-08-20 | 矢崎总业株式会社 | Head-up display device |
| CN104199188A (en) * | 2014-09-01 | 2014-12-10 | 望新（上海）科技有限公司 | Vehicle HUD light source system |
| CN104737059A (en) * | 2012-10-24 | 2015-06-24 | 日本精机株式会社 | Head-up display device |
| CN104755993A (en) * | 2012-08-30 | 2015-07-01 | 欧普汀温特公司 | Optical device comprising an optical waveguide and method for manufacturing such a device |
| TWI509287B (en) * | 2014-06-19 | 2015-11-21 | Lu Ho | Head up display |
| CN105807847A (en) * | 2014-12-30 | 2016-07-27 | 中国舰船研究设计中心 | Ship navigation information display apparatus used for inwards tilted front wall of cab |
| CN106547094A (en) * | 2016-11-25 | 2017-03-29 | 刘涛 | The equipment that new line shows is realized using shield glass |
| CN106796352A (en) * | 2014-10-16 | 2017-05-31 | 日本精机株式会社 | Head-up display |
| CN107085306A (en) * | 2017-06-15 | 2017-08-22 | 杭州太若科技有限公司 | Display device, augmented reality equipment and the head-up display of augmented reality equipment |
| CN107209369A (en) * | 2014-12-05 | 2017-09-26 | 法雷奥舒适驾驶助手公司 | Head-up display with adjustable observation window |
| CN107422477A (en) * | 2016-05-23 | 2017-12-01 | Lg电子株式会社 | Vehicle head-up display |
| CN107850789A (en) * | 2015-09-01 | 2018-03-27 | 欧姆龙株式会社 | Display device |
| CN109643019A (en) * | 2016-08-29 | 2019-04-16 | 京瓷株式会社 | Liquid crystal display panel, liquid crystal display device, display device, moving body and light supply apparatus |
| CN109901295A (en) * | 2017-12-08 | 2019-06-18 | 苏州苏大维格光电科技股份有限公司 | Optical waveguide film, head up display and head-up-display system |
| CN111886534A (en) * | 2018-03-28 | 2020-11-03 | 株式会社理光 | Control device, display system, moving object, control method, and recording medium |
| WO2021226772A1 (en) * | 2020-05-11 | 2021-11-18 | 上海欧菲智能车联科技有限公司 | Surround view display method and apparatus, computer device, and storage medium |
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| US9244276B2 (en) | 2011-12-15 | 2016-01-26 | Yazaki Corporation | Head-up display device |
| CN103998971A (en) * | 2011-12-15 | 2014-08-20 | 矢崎总业株式会社 | Head-up display device |
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| CN107422477A (en) * | 2016-05-23 | 2017-12-01 | Lg电子株式会社 | Vehicle head-up display |
| CN109643019A (en) * | 2016-08-29 | 2019-04-16 | 京瓷株式会社 | Liquid crystal display panel, liquid crystal display device, display device, moving body and light supply apparatus |
| CN109643019B (en) * | 2016-08-29 | 2021-06-22 | 京瓷株式会社 | Liquid crystal panel, liquid crystal display device, moving object, and light source device |
| CN106547094A (en) * | 2016-11-25 | 2017-03-29 | 刘涛 | The equipment that new line shows is realized using shield glass |
| CN107085306A (en) * | 2017-06-15 | 2017-08-22 | 杭州太若科技有限公司 | Display device, augmented reality equipment and the head-up display of augmented reality equipment |
| CN107085306B (en) * | 2017-06-15 | 2023-07-04 | 优奈柯恩(北京)科技有限公司 | Display device of augmented reality equipment, augmented reality equipment and head-up display |
| CN109901295A (en) * | 2017-12-08 | 2019-06-18 | 苏州苏大维格光电科技股份有限公司 | Optical waveguide film, head up display and head-up-display system |
| CN111886534A (en) * | 2018-03-28 | 2020-11-03 | 株式会社理光 | Control device, display system, moving object, control method, and recording medium |
| WO2021226772A1 (en) * | 2020-05-11 | 2021-11-18 | 上海欧菲智能车联科技有限公司 | Surround view display method and apparatus, computer device, and storage medium |
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