CN106168710A - Head-up-display system and there is the automobile of head-up-display system - Google Patents
Head-up-display system and there is the automobile of head-up-display system Download PDFInfo
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- CN106168710A CN106168710A CN201610862856.9A CN201610862856A CN106168710A CN 106168710 A CN106168710 A CN 106168710A CN 201610862856 A CN201610862856 A CN 201610862856A CN 106168710 A CN106168710 A CN 106168710A
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- head
- display system
- light
- phase compensation
- projection unit
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The embodiment of the invention discloses a kind of head-up-display system, it includes projection unit and phase compensation portion, described projection unit is used for projecting image, the optical axis in described phase compensation portion is predetermined angular with the polarization direction of described projection unit emergent light, so that the emergent light of described projection unit is changed into elliptically polarized light after passing described phase compensation portion.The embodiment of the present invention additionally provides a kind of automobile with head-up-display system, including above-mentioned head-up-display system.Utilize the embodiment of the present invention that line polarized light is changed into elliptically polarized light, it is to avoid emergent light is all stopped by polarised light glasses, eliminate driver and wear the impact of polarized light sunglasses observation HUD display content.
Description
Technical field
The present embodiments relate to automobile technical field, be specifically related to a kind of head-up-display system and there is the display system that comes back
The automobile of system.
Background technology
Along with the progress of society, the development of science and technology, vehicle-mounted head-up display (Head Up Display, HUD) is the most extensive
It is applied on automobile.Vehicle-mounted head-up display device can by travel speed current for automobile, direction, when boat the information such as information, road conditions,
The front driver is shown, it is to avoid driver bows and checks relevant information, accomplishes eyeing on road, so that drive by HUD
Sail safer.
At present, the emergent light of existing vehicle-mounted head-up display is line polarized light.Inventor is realizing the process of invention
Middle discovery, when driver wears polarized light sunglasses, if the polarization direction of emergent light is horizontal direction, polarized light sunglasses
Using vertical polaroid, vertical polaroid can only be by the polarized light of vertical direction, and the polarized light of horizontal direction is all by partially
The light sunglasses that shakes stops, does not enters the eyes of driver, does not observes the display content of HUD, there is potential safety hazard.
Summary of the invention
The embodiment of the present invention provides a kind of head-up-display system and has the automobile of head-up-display system, is turned by line polarized light
Become elliptically polarized light, it is to avoid emergent light is all stopped by polarised light glasses, eliminate driver and wear the observation of polarized light sunglasses
The impact of HUD display content.
Embodiment of the present invention one head-up-display system, it includes projection unit and phase compensation portion, and described projection unit is used for
Projection image, the optical axis in described phase compensation portion is predetermined angular with the polarization direction of described projection unit emergent light, so that described
The emergent light of projection unit is changed into elliptically polarized light after passing described phase compensation portion.
Alternatively, described phase compensation portion is quarter wave plate.
Alternatively, wherein, described predetermined angular is θ, 0 ＜ θ ＜ 90 °.
Alternatively, wherein, θ=45 °.
Alternatively, wherein, described phase compensation portion is phase compensation film or liquid crystal film.
Alternatively, wherein, described optical axis is parallel with the surface of described phase compensation film or liquid crystal film.
Alternatively, described head-up-display system also includes the protective cover for protecting projection unit, wherein, described phase compensation
Portion is fitted on described protective cover, and the emergent light of projection unit passes protective cover, passes from described phase compensation portion.
Alternatively, described head-up-display system also includes the radiation shield for reflecting projection unit emergent light, wherein, described phase
Position compensation section is fitted on described radiation shield, and the emergent light of described projection unit reflects through described radiation shield, from described phase compensation
Portion passes.
The embodiment of the present invention also provides for a kind of vehicle with head-up-display system, and it includes arbitrary described new line
Display system.
Alternatively, described head-up-display system is arranged in driver's cabin, is positioned at the front of driver's seat.
Head-up-display system that the embodiment of the present invention provides and there is the automobile of head-up-display system mend by arranging phase place
Repaying portion, projection unit emergent light is converted into elliptically polarized light, when driver wears polarized light sunglasses, elliptically polarized light is formed
Image cannot be stopped completely by polarized light sunglasses so that projection image enter driver's eyes, to observe the display of HUD
Content, eliminates driver and wears the impact of polarized light sunglasses observation HUD display content, improve the safety driven..
Accompanying drawing explanation
Fig. 1 is the decomposition texture schematic diagram of the linearly polarized photon that the embodiment of the present invention provides.
Fig. 2 is the fundamental diagram of the head-up-display system that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, technical scheme is described in detail.
When Ray Of Light is injected in aeolotropic crystal, due to birefringence, this bundle light to be split into two bundles along not Tongfang
To the broken line propagated.It is all polarized light that birefringent two-beam line occurs.Occurring in birefringent two-beam line, when change into
The light that when penetrating direction, spread speed does not changes is referred to as ordinary ray, represents with o；It is fixed that another Ray Of Light does not observe refraction
Rule, when incident ray direction changes, its spread speed changes the most therewith, and the refractive index of light is different, and this bundle light is referred to as very
Light, represents with e, as shown in Figure 1.
In aeolotropic crystal, there are some particular orientation, these particular orientation do not occur birefringence, i.e. seeks
Ordinary ray is identical with spread speed with the special ray direction of propagation, and these particular orientation are referred to as the optical axis of crystal.There is an optical axis
Crystal uniaxial crystal, have the crystal of two optical axises biaxial crystal.For biaxial crystal, the two-beam line after birefringence is very
Light.
A branch of natural light is incident with the optical axis direction being perpendicular to uniaxial crystal, and mutually perpendicular two bundles of produced vibration plane are partially
Shake the most incoherent.Because the most just being produced by the different molecular in light source and atom, there is no fixing phase contrast, institute
Not interfere.But after a branch of monochromatic polarized light is by disdiaclast, produced two bundle polarized light are can phase
Do.
When a branch of line polarized light is perpendicular to the optical axis incidence of crystal, produce two bundle polarized light, i.e. o light and e light.Make line inclined
The shake direction of vibration MM ' of light and the optical axis CC ' of crystal has angle θ (θ ≠ 0).Then, on the surface of crystal, amplitude is A's
Line polarized light is decomposed into the o light that amplitude is Ao=Asin θ and the e light that amplitude is Ae=Acos θ, and now o light and e light have phase
Same phase place, as shown in Figure 1.In line polarized light enters crystal, though o light is propagated in identical direction with e light, but the speed of propagation
Degree difference, thus create phase contrast.Owing to o light is different with the phase contrast of e light and synthesize different polarized light, such as circular polarization
Light, elliptically polarized light.The phase contrast of o light and e light is determined by the thickness of two-beam refractive index in crystal and crystal.Make No,
Ne is respectively o light and the refractive index of e light, and d is the thickness of crystal, and λ is o light and the wavelength of e light, and produced phase contrast is
Then
Wherein, d (No-Ne) is o light and the optical path difference of e light.
The thickness changing crystal can get o light and the e light of out of phase difference.WhenDuring for the odd-multiple of pi/2, can produce
Circularly polarized light；WhenElliptically polarized light all can be produced when not being the integral multiple of pi/2.The vibration end points of circularly polarized light is in the biography of light
Broadcasting and be projected as a circle on direction, the vibration end points of elliptically polarized light is projected as an ellipse in the direction of propagation of light.Circle is partially
Shake light and elliptically polarized light at every only one of which direction of vibration the most in a flash.Circularly polarized light is the special circumstances of elliptically polarized light, circle
Polarized light falls within the scope of protection of the invention.
First embodiment
Fig. 2 shows the fundamental diagram of the head-up-display system of the embodiment of the present invention, and it includes that projection unit 1 and phase place are mended
Repaying portion 2, described projection unit 1 is used for projecting the polarization of image, the optical axis in described phase compensation portion 2 and described projection unit 1 emergent light
Direction is predetermined angle theta, so that the emergent light of described projection unit 1 is changed into elliptically polarized light after passing described phase compensation portion 2.
In the first embodiment of the present invention, phase compensation portion 2 is quarter wave plate.All o light and e light can be made to produce λ/4 light path
The wave plate of difference is referred to as quarter wave plate.The optical axis uniaxial crystal sheet parallel with crystal face is wave plate.The material of quarter wave plate can be phase place
Compensate film or organic liquor epitaxial, it is possible to use other aeolotropic crystals.
In the first embodiment of the present invention, as in figure 2 it is shown, 0 ＜ θ ＜ 90 °.
Further, when θ=45 °, elliptically polarized light becomes circularly polarized light, i.e. the amplitude A sin θ of o light is equal to e light
Amplitude A cos θ.
As 0 ＜ θ ＜ 45 ° and 45 ＜ θ ＜ 90 °, Asin θ and Acos θ is unequal, is elliptically polarized light.90-360 ° it
Between change identical with 0-90 °, simply the direction of vibration of polarized light is different.
During work, projection unit emergent light vertically injects phase compensation portion 2, and behind phase compensation portion 2, emergent light is changed into
Elliptically polarized light, forms projection image.When driver wears polarized light sunglasses, the image that elliptically polarized light is formed cannot be by
Polarized light sunglasses stops completely so that projection image enters driver's eyes, and to observe the display content of HUD, elimination is driven
The person of sailing wears polarized light sunglasses and observes the impact of HUD display content, improves the safety driven.
Second embodiment
In the second embodiment of the present invention, described head-up-display system is front dress HUD.As in figure 2 it is shown, front dress HUD
The protective cover for protecting projection unit 1 it is provided with, by phase compensation portion 2 directly against being combined on protective cover in projection unit.Projection unit 1
Projection image be incident upon the dead ahead of driver, to facilitate driver to check projection information.Protective cover is a clear glass, throws
Penetrate the emergent light in portion 1 through protective cover, line polarized light generation bireflectance can not be made.
In the second embodiment of the present invention, phase compensation portion 2 uses phase compensation film, and phase compensation film uses bonding side
Formula is fitted on protective cover.The optical axis of phase compensation film is parallel with the surface of phase compensation film, and the quantity of optical axis is one.
When select use quarter wave plate as phase compensation film time, the polarization direction of the optical axis direction of quarter wave plate and projection unit emergent light in
45 ° of angles, now, the amplitude of o light and e light is equal, so that line polarized light is converted into circularly polarized light after quarter wave plate passes.Phase
Position compensates the thickness that also can be selected for other of film, and the phase contrast that o light and e light can be made to produce is the odd-multiple of pi/2, or π/
2 non-integral multiple, if optical path difference is 3 λ/4 etc., now line polarized light is converted into elliptically polarized light.
During work, when the emergent light of projection unit 1 vertically injects phase compensation portion 2, by phase compensation portion 2 by projection unit 1
Emergent light is converted into circularly polarized light by line polarized light so that the light of projection image can be entered into by polarized light sunglasses to be driven
The eyes of the person of sailing, to observe the display content of HUD, eliminate driver and wear polarized light sunglasses observation HUD display content
Impact, improves the safety driven.
In other alternative embodiments of the present invention, phase compensation film can be with direct plating on protective cover, it is possible to make to throw
Penetrate the emergent light of line polarized light in portion after phase compensation film, be changed into circularly polarized light.
3rd embodiment
In the third embodiment of the present invention, described head-up-display system is rear dress HUD.Rear dress HUD has radiation shield, instead
Penetrate the emergent light shielded for reflecting projection unit 1, projection image to be reflexed to the front of driver.The emergent light warp of projection unit 1
After crossing radiation shield reflection, there is not bireflectance, as shown in Figure 2.Phase compensation portion 2 is fitted on radiation shield.
In the third embodiment of the present invention, phase compensation film may be used without organic liquor epitaxial, is coated with on protective cover
Machine liquid crystal film, the optical axis of organic liquor epitaxial is also parallel with the surface of organic liquor epitaxial, and the quantity of optical axis is also one.When sending out
When penetrating portion's emergent light entrance organic liquor epitaxial, there is bireflectance in emergent light in organic liquor epitaxial, produces o light and e light.Due to o
Light is different with e light spread speed in organic liquor epitaxial so that o light and e light produce phase contrast.When phase contrast is the strange of pi/2
During several times, and when the direction of vibration angle of the optical axis of organic liquor epitaxial and emergent light is 45 °, emergent light is penetrated from organic liquor epitaxial
When going out, the amplitude of o light and e light is equal, and line polarized light is converted into circularly polarized light.When phase contrast is pi/2 non-integral multiple, line is inclined
The light that shakes is converted into elliptically polarized light.
During work, when the emergent light of projection unit 1 is reflected screen vertical reflection applying aspect compensation section 2, by phase compensation portion 2
Projection unit 1 emergent light is converted into circularly polarized light by linearly polarized photon so that the light of projection image can by polarized light too
Sun mirror enters into the eyes of driver, to observe the display content of HUD, eliminates driver and wears the observation of polarized light sunglasses
The impact of HUD display content, improves the safety driven.
4th embodiment
Fourth embodiment of the invention additionally provides a kind of automobile with head-up-display system, including any of the above-described embodiment
In head-up-display system.
In fourth embodiment of the invention, alternatively, head-up-display system may be mounted in driver's cabin, is positioned at driver's seat
Dead ahead so that the projection image of projection unit is positioned at the dead ahead of driver, facilitate driver to observe.When driver wears partially
Shake light sunglasses time, elliptically polarized light formed image cannot be stopped completely by polarized light sunglasses so that projection image enter
Driver's eyes, to observe the display content of HUD, eliminates driver and wears polarized light sunglasses observation HUD display content
Impact, improves the safety driven.
Above, being described in detail technical scheme in conjunction with specific embodiments, described is embodied as
Example is adapted to assist in the thought understanding the present invention.The derivation that those skilled in the art make on the basis of the specific embodiment of the invention
Within falling within scope with modification.
Claims (10)
1. a head-up-display system, it is characterised in that include projection unit and phase compensation portion, described projection unit is used for projecting shadow
Picture, the optical axis in described phase compensation portion is predetermined angular with the polarization direction of described projection unit emergent light, so that described projection unit
Emergent light pass described phase compensation portion after be changed into elliptically polarized light.
2. head-up-display system as claimed in claim 1, it is characterised in that described phase compensation portion is quarter wave plate.
3. head-up-display system as claimed in claim 2, it is characterised in that wherein, described predetermined angular is θ, 0 ＜ θ ＜
90°。
4. head-up-display system as claimed in claim 3, it is characterised in that wherein, θ=45 °.
5. the head-up-display system as described in claim 1-4 is arbitrary, it is characterised in that wherein, described phase compensation portion is phase
Position compensates film or liquid crystal film.
6. head-up-display system as claimed in claim 5, it is characterised in that wherein, described optical axis and described phase compensation film
Or the surface of liquid crystal film is parallel.
7. head-up-display system as claimed in claim 5, it is characterised in that described head-up-display system also includes for protecting
The protective cover of projection unit, wherein, described phase compensation portion is fitted on described protective cover, and the emergent light of projection unit is through protection
Cover, passes from described phase compensation portion.
8. head-up-display system as claimed in claim 5, it is characterised in that described head-up-display system also includes for reflecting
The radiation shield of projection unit emergent light, wherein, described phase compensation portion is fitted on described radiation shield, the emergent light of described projection unit
Reflect through described radiation shield, pass from described phase compensation portion.
9. a vehicle with head-up-display system, it is characterised in that include that the new line as described in claim 1-8 is arbitrary shows
Show system.
There is the automobile of head-up-display system the most as claimed in claim 9, it is characterised in that described head-up-display system sets
Put in driver's cabin, be positioned at the front of driver's seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610862856.9A CN106168710A (en) | 2016-09-28 | 2016-09-28 | Head-up-display system and there is the automobile of head-up-display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610862856.9A CN106168710A (en) | 2016-09-28 | 2016-09-28 | Head-up-display system and there is the automobile of head-up-display system |
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| Publication Number | Publication Date |
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| CN106168710A true CN106168710A (en) | 2016-11-30 |
Family
ID=57377199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610862856.9A Pending CN106168710A (en) | 2016-09-28 | 2016-09-28 | Head-up-display system and there is the automobile of head-up-display system |
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Cited By (7)
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| CN110837185A (en) * | 2018-08-16 | 2020-02-25 | 宁波舜宇车载光学技术有限公司 | Head-up display system and head-up display method |
| CN111226160A (en) * | 2017-10-19 | 2020-06-02 | 日东电工株式会社 | Head-up display device |
| CN111226158A (en) * | 2017-10-19 | 2020-06-02 | 日东电工株式会社 | Head-up display device |
| CN111295615A (en) * | 2017-11-01 | 2020-06-16 | 株式会社村上开明堂 | Image display system |
| CN111742254A (en) * | 2018-02-09 | 2020-10-02 | 伊奎蒂公司 | Image light guide with circular polarizer |
| US11215821B2 (en) | 2017-10-19 | 2022-01-04 | Nitto Denko Corporation | Head-up display device |
| WO2022012027A1 (en) * | 2020-07-13 | 2022-01-20 | 南京微纳科技研究院有限公司 | Target imaging method and apparatus, electronic device, and storage medium |
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Effective date of registration: 20180312 Address after: 100026 Beijing city Chaoyang District Yaojieyuan Road No. 105, No. 3 Building 8 layer 909 Applicant after: Music Automotive (Beijing) Co., Ltd. Address before: 100025 Beijing city Chaoyang District Yaojieyuan Road No. 105, No. 3 Building 10 layer 1102 Applicant before: Music Holdings (Beijing) Limited Applicant before: Smart car technology (Beijing) Co., Ltd. |
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Effective date of registration: 20180906 Address after: 511458 9, Nansha District Beach Road, Guangzhou, Guangdong, 9 Applicant after: Hengda Faraday future intelligent vehicle (Guangdong) Co., Ltd. Address before: 100026 8 floor 909, 105 building 3, Yao Yuan Road, Chaoyang District, Beijing. Applicant before: Music Automotive (Beijing) Co., Ltd. |
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Effective date of registration: 20190313 Address after: 100015 Building No. 7, 74, Jiuxianqiao North Road, Chaoyang District, Beijing, 001 Applicant after: FAFA Automobile (China) Co., Ltd. Address before: 511458 9, Nansha District Beach Road, Guangzhou, Guangdong, 9 Applicant before: Hengda Faraday future intelligent vehicle (Guangdong) Co., Ltd. |
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