CN109445099A - A kind of HUD light path system for cooperating polarisation sunglasses to use and eliminating ghost image - Google Patents
A kind of HUD light path system for cooperating polarisation sunglasses to use and eliminating ghost image Download PDFInfo
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- CN109445099A CN109445099A CN201811365800.8A CN201811365800A CN109445099A CN 109445099 A CN109445099 A CN 109445099A CN 201811365800 A CN201811365800 A CN 201811365800A CN 109445099 A CN109445099 A CN 109445099A
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- 239000011521 glass Substances 0.000 claims abstract description 41
- 230000010287 polarization Effects 0.000 claims description 37
- 238000002310 reflectometry Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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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- 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
- G02B2027/0192—Supplementary details
- G02B2027/0196—Supplementary details having transparent supporting structure for display mounting, e.g. to a window or a windshield
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
Abstract
本发明涉及HUD技术领域，具体公开了一种可配合偏光墨镜使用并消除重影的HUD光路系统，包括光源模组和反射模组，所述光源模组出射P偏振光，所述反射模组包括设于HUD内的反射镜模组和能够反射P光、透射S光的汽车风挡玻璃。其有益效果在于：采用至少包括玻璃内表面、P光反射层和玻璃外表面该三层结构的汽车风挡玻璃，可以反射P光透射S光，驾驶员佩戴偏光墨镜的时候HUD出射的P光不会被过滤，图像不会变暗，因此观察图像时没有影响，且本发明对风挡玻璃的内外表面角度无要求，可以是楔形玻璃也可以是平行玻璃，制作难度降低，成本低。反射P光的风挡玻璃配合P光出射的HUD，图像投影时不会产生重影，对HUD内部的光路及结构设计要求也较低。
The invention relates to the technical field of HUD, and specifically discloses a HUD optical path system that can be used with polarized sunglasses and eliminates ghosting, comprising a light source module and a reflection module, wherein the light source module emits P polarized light, and the reflection module It includes a mirror module set in the HUD and a car windshield glass that can reflect P light and transmit S light. Its beneficial effect is: adopting the automobile windshield glass with at least the three-layer structure of the inner surface of the glass, the P light reflection layer and the outer surface of the glass, the P light can be reflected and the S light can be transmitted, and the P light emitted by the HUD when the driver wears polarized sunglasses is not. It will be filtered, and the image will not be darkened, so there is no influence on the observation of the image, and the present invention has no requirement on the angle of the inner and outer surfaces of the windshield glass. The windshield glass that reflects P light and the HUD that emits P light will not produce ghost images during image projection, and the requirements for the optical path and structural design inside the HUD are also lower.
Description
Technical field
The present invention relates to HUD technical fields, more particularly to one kind, and polarisation sunglasses can be cooperated to use and eliminate the HUD light of ghost image
Road system.
Background technique
Light injects glass from air, can generate refraction (transmission), reflex, refraction light and reflected light in glass surface
Ratio and incident angle have relationship, and known to the relation curve of intensity reflectance and incidence angle as shown in Figure 1: incident angle is got over
Greatly, reflected light is more, and the ratio of P light and S light is in variation, as shown in Fig. 2, when incident angle reaches cloth in reflected light
This spy angle i of scholar0When, reflected light is essentially S light, and P light all transmits, as incident angle further increases, reflected light ratio
Regular meeting further increases, but the reflection ratio of S light is promoted faster.
In the practical application of windscreen formula HUD (also referred to as WHUD), when HUD transmitted light windshield incidence angle about
When between 55 °~65 °, region hardly reflected P light herein.
The working principle of polarisation sunglasses is also based on the principle of Brewster reflection, as shown in figure 3, apart from distant
When, coarse road surface looks as mirror surface, if reflected sunlight also will form dazzle, pavement reflecting is essentially big
Angle reflected light, S polarized light account for very big ratio, and an important function of sunglasses is to filter the S light of road reflection, therefore block
It is consistent with road surface S light direction to cut polarization direction.
Common windshield cooperation HUD work, windshield reflected light are S light, and S light is when driver wears sunglasses
It is filtered, influences driver and observe image.Common windshield uses common PVB, and glass surfaces externally and internally is parallel, main picture
With secondary as separating, it is easy to cause ghost image, such as Fig. 4.For ghost problems, wedge-shaped PVB, the thickness of top glass is can be used in windshield
Degree is greater than the thickness of bottom glass, and main picture is overlapped with secondary picture, such as Fig. 5, but wedge of glass processing is limited by technique, and cost of manufacture is high
It is high, and wedge angle can design HUD and generate constraint, promote design difficulty.
Wedge of glass eliminates ghost image, can only go to eliminate for a certain angle, can not completely eliminate throwing in entire view field
Shadow, and wedge of glass can claim to the projector distance of HUD, promote design difficulty.
Summary of the invention
The present invention, which provides one kind, can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image, and the technology of solution is asked
When topic is common windshield cooperation HUD work, the S light of surface reflection is filtered when driver wears sunglasses, shadow
It rings driver and observes image, and the material because of common windshield causes ghost phenomena to be difficult to simply and effectively eliminate with structure.
In order to solve the above technical problems, the present invention provides one kind and polarisation sunglasses can be cooperated to use and eliminate the HUD light of ghost image
Road system, including light source module group and reflection mould group, the light source module group are emitted P-polarized light, and the reflection mould group includes being set to HUD
Interior reflecting mirror mould group and can reflected P light, transmit the automobile wind shield glass of S light.
Specifically, the automobile wind shield glass is three-decker, including interior surfaces of glass, P reflection layer and glass appearance surface
Face, the P reflection layer is 5%~20% to the reflectivity of P light, to guarantee translucency > 70% of glass.
In the preferred embodiment of the present invention, the light source module group is TFT mould group, and the TFT mould group uses 90 ° of polarisations
TFT, light polarization direction is consistent with the reflection light polarization direction of the P reflection layer namely the polarization of TFT emergent light for outgoing
Direction is parallel with TFT short side direction.
In another preferred embodiment of the invention, the light source module group is TFT mould group, and the TFT mould group is inclined using 0 °
The TFT of light, the surface TFT of 0 ° of polarisation are equipped with half slide, outgoing light polarization direction and the P reflection layer
Reflect that light polarization direction is consistent namely the polarization direction of TFT emergent light is parallel with TFT short side direction.
In another preferred embodiment of the invention, the light source module group is PGU.
Preferably, micro- throwing PGU is DLP, and the image surface increase of the DLP has a P light polarization plate, for transmiting P light,
To guarantee that it is consistent with the reflection light polarization direction of the P reflection layer that it is emitted light polarization direction.
Another preferred, micro- throwing PGU is LCOS, and the LCOS is projected using P light, is emitted light polarization direction and institute
State P reflection layer reflection light polarization direction is consistent namely the polarization direction of the LCOS emergent light and image short side direction it is flat
Row.
One kind provided by the invention can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image, using at least wrapping
The automobile wind shield glass for including interior surfaces of glass, the P reflection layer and glass outer surface three-decker, can be with reflected P light transmission S
Light, the P light of HUD outgoing not will be filtered when driver wears polarisation sunglasses, and image will not be dimmed, therefore when observation image
It does not influence, and surfaces externally and internally angle no requirement (NR) of the present invention to windshield, can be wedge of glass and be also possible to parallel glass
Glass, manufacture difficulty reduces, at low cost.The HUD of the windshield cooperation P light outgoing of reflected P light, when image projection, will not generate weight
Shadow, to inside HUD optical path and Structural Design Requirement it is relatively low.
Detailed description of the invention
Fig. 1 is the graph of relation of intensity reflectance provided by the invention and incidence angle；
Fig. 2 is the light path principle figure of Brewster's law provided by the invention；
Fig. 3 is the light path principle figure of polarisation sunglasses work provided by the invention；
Fig. 4 is the light path principle figure provided by the invention that ghost image is generated using common PVB type windshield；
Fig. 5 is the light path principle figure provided by the invention that do not generate ghost image using wedge shape PVB type windshield；
Fig. 6 is that one kind provided in an embodiment of the present invention can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image
Light channel structure figure；
Fig. 7 is the structure and operation principles figure of windshield in Fig. 6 embodiment provided by the invention.
Fig. 8 be in Fig. 6 embodiment provided by the invention windscreen glass applications on HUD, the reality that driver is watched with sunglasses
Existing effect picture.
Specific embodiment
Embodiments of the present invention are specifically illustrated with reference to the accompanying drawing, embodiment is only given for illustrative purposes,
It can not be interpreted as limitation of the invention, including attached drawing is only for reference and illustrates use, not constitute and the invention patent is protected
The limitation of range, because on the basis of not departing from spirit and scope of the invention many changes can be carried out to the present invention.
Polarisation sunglasses can be cooperated to use the embodiment of the invention provides one kind and eliminate the HUD light path system of ghost image, light
Line structure figure is as shown in fig. 6, include light source module group 1 and reflection mould group 2, the light source module group 1 is emitted P-polarized light, the reflection
Mould group 2 include reflecting mirror mould group 21 in the HUD and can reflected P light, transmit the automobile wind shield glass 22 of S light.
Specifically, the automobile wind shield glass 22 is outside three-decker, including interior surfaces of glass, P reflection layer and glass
Surface, as shown in fig. 7, the structure and operation principles of windshield 22 in Fig. 6 embodiment provided by the invention are clearly presented,
If applying the windshield 22 on HUD, when driver watches HUD image with sunglasses, viewing effect such as Fig. 8 institute
Show.The P reflection layer need to control between 5%~20% the reflectivity of P light, with translucency > 70% to guarantee glass.
In the present embodiment, the light source module group 1 is TFT mould group, and the TFT mould group uses the TFT of 90 ° of polarisations, goes out
Penetrate that light polarization direction is consistent with the reflection light polarization direction of the P reflection layer namely polarization direction and the TFT of TFT emergent light
Short side direction is parallel.
In another preferred embodiment of the invention, the light source module group 1 is TFT mould group, and the TFT mould group is inclined using 0 °
The surface TFT of the TFT of light, 0 ° of polarisation are equipped with half slide, to guarantee that it is emitted light polarization direction and the P light is anti-
Penetrate layer reflection light polarization direction is consistent namely the polarization direction of TFT emergent light is parallel with TFT short side direction, can will polarize
State selects 90 °, i.e., S polarized light is changed to P-polarized light.
In another preferred embodiment of the invention, the light source module group 1 is micro- throwing PGU.
In the present embodiment, it is preferred that the image surface increase that micro- throwing PGU is DLP described in DLP has a P light polarization plate,
For transmiting P light, to guarantee that its outgoing light polarization direction is consistent with the reflection light polarization direction of the P reflection layer, can incite somebody to action
Natural light is converted to the outgoing of P light.
Another preferred, micro- throwing PGU is LCOS, and the LCOS is projected using P light, is emitted light polarization direction and institute
State P reflection layer reflection light polarization direction is consistent namely the polarization direction of the LCOS emergent light and image short side direction it is flat
Row.
One kind provided in an embodiment of the present invention can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image, use
It, can be with reflected P light including at least the automobile wind shield glass of interior surfaces of glass, the P reflection layer and glass outer surface three-decker
S light is transmitted, the P light of HUD outgoing not will be filtered when driver wears polarisation sunglasses, and image will not be dimmed, therefore observe
It is not influenced when image, and surfaces externally and internally angle no requirement (NR) of the present invention to windshield, can be wedge of glass and be also possible to
Parallel glass, manufacture difficulty reduces, at low cost.The HUD of the windshield cooperation P light outgoing of reflected P light, when image projection, will not
Generate ghost image, to inside HUD optical path and Structural Design Requirement it is relatively low.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (7)
1. one kind can cooperate polarisation sunglasses to use and eliminate the light path system of WHUD ghost image, including light source module group and reflection mould group,
It is characterized in that, the light source module group is emitted P-polarized light, the reflection mould group includes reflecting mirror mould group and energy in HUD
Enough reflected P light, the automobile wind shield glass for transmiting S light.
2. one kind as described in claim 1 can cooperate polarisation sunglasses to use and eliminate the light path system of WHUD ghost image, feature
Be: the automobile wind shield glass is three-decker, including interior surfaces of glass, P reflection layer and glass outer surface, the P light
Reflecting layer is 5%~20% to the reflectivity of P light, to guarantee translucency > 70% of glass.
3. one kind as claimed in claim 2 can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image, feature exists
In: the light source module group is TFT mould group, and the TFT mould group uses the TFT of 90 ° of polarisations, outgoing light polarization direction and the P
The reflection light polarization direction of reflection layer is consistent namely the polarization direction of TFT emergent light is parallel with TFT short side direction.
4. one kind as claimed in claim 2 can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image, feature exists
In: the light source module group is TFT mould group, and the TFT mould group uses the TFT of 0 ° of polarisation, and the surface TFT of 0 ° of polarisation is equipped with two
/ mono- slide, with guarantee its be emitted light polarization direction with the reflection light polarization direction of the P reflection layer consistent namely TFT
The polarization direction of emergent light is parallel with TFT short side direction.
5. one kind as described in claim 1 can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image, feature exists
In: the light source module group is micro- throwing PGU.
6. one kind as claimed in claim 5 can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image, feature exists
In: micro- throwing PGU is DLP, and the image surface increase of the DLP has a P light polarization plate, for transmiting P light, to guarantee its outgoing
Light polarization direction is consistent with the reflection light polarization direction of the P reflection layer.
7. one kind as claimed in claim 5 can cooperate polarisation sunglasses to use and eliminate the HUD light path system of ghost image, feature exists
In: micro- throwing PGU is LCOS, and the LCOS is projected using P light, and outgoing light polarization direction is anti-with the P reflection layer
Penetrate that light polarization direction is consistent namely the polarization direction of the LCOS emergent light is parallel with image short side direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018106309248 | 2018-06-19 | ||
| CN201810630924.8A CN108594438A (en) | 2018-06-19 | 2018-06-19 | A kind of HUD light path systems for coordinating polarisation sunglasses to use and eliminating ghost image |
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| CN109445099A true CN109445099A (en) | 2019-03-08 |
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| CN201810630924.8A Pending CN108594438A (en) | 2018-06-19 | 2018-06-19 | A kind of HUD light path systems for coordinating polarisation sunglasses to use and eliminating ghost image |
| CN201811365800.8A Pending CN109445099A (en) | 2018-06-19 | 2018-11-16 | A kind of HUD light path system for cooperating polarisation sunglasses to use and eliminating ghost image |
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| CN201810630924.8A Pending CN108594438A (en) | 2018-06-19 | 2018-06-19 | A kind of HUD light path systems for coordinating polarisation sunglasses to use and eliminating ghost image |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115280217A (en) * | 2020-12-14 | 2022-11-01 | Jvc建伍株式会社 | Display device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031977A (en) * | 2019-03-18 | 2019-07-19 | 惠州市华阳多媒体电子有限公司 | A kind of Double-Screen Display System based on polarization spectro |
| CN109870813A (en) * | 2019-03-18 | 2019-06-11 | 惠州市华阳多媒体电子有限公司 | A kind of AR-HUD light path system using PBS polarization spectro piece |
| CN113671698B (en) * | 2020-05-15 | 2022-07-29 | 华为技术有限公司 | Head-up display system and image display method based on head-up display system |
| CN114063284A (en) * | 2020-07-30 | 2022-02-18 | 未来（北京）黑科技有限公司 | Image sources, head-up displays, and transportation equipment |
| CN114137725A (en) * | 2020-09-04 | 2022-03-04 | 未来（北京）黑科技有限公司 | A head-up display system capable of displaying three-dimensional images |
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| CN115280217B (en) * | 2020-12-14 | 2024-03-08 | Jvc建伍株式会社 | Display device |
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| CN108594438A (en) | 2018-09-28 |
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