CN203688913U - Anti-ghost head-up display device - Google Patents
Anti-ghost head-up display device Download PDFInfo
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- CN203688913U CN203688913U CN201420025209.9U CN201420025209U CN203688913U CN 203688913 U CN203688913 U CN 203688913U CN 201420025209 U CN201420025209 U CN 201420025209U CN 203688913 U CN203688913 U CN 203688913U
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- front windshield
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- 230000010287 polarization Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000007 visual effect Effects 0.000 abstract description 5
- 239000011521 glass Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
The utility model is suitable for the head-up display technology field and provides an anti-ghost head-up display device mounted in an automobile. The anti-ghost head-up display device comprises projection equipment used for projecting an image to a front windshield of the automobile, wherein the projection equipment is internally provided with a phase modulation sheet used for converting incident light into linearly-polarized light, the anti-ghost head-up display device further comprises a polarizing film arranged in the front windshield, and a transmission direction of the polarizing film is perpendicular to a polarization direction of dominant wavelengths of the linearly-polarized light which rips in the front surface of the front windshield. According to the anti-ghost head-up display device, the phase modulation sheet is arranged in the projection equipment, and the polarizing film is embedded in the front windshield, the transmission direction of the polarizing film is perpendicular to the polarization direction of the dominant wavelengths of the linearly-polarized light which rips in the front surface of the front windshield, so the light ripping into the front windshield is prevented from being reflected by a back surface of the front windshield to an eye, and an anti-ghost effect is realized. The anti-ghost head-up display device has properties of great anti-ghost effect and simple structure, is not limited by the visual line scope, is convenient for application and does not influence attractiveness.
Description
Technical field
The utility model relates to looks squarely display technique field, relates in particular to a kind of head-up display of eliminating ghost image.
Background technology
Use when head up display (HUD), the inside and outside surface of common windshield all can reflected image, and driver can observe two even multiple images.As Fig. 1, the light L0 that light source A sends, reflects in glass front 1, reflected light L1 incides eyes, eyes are regarded the some A1 on the reverse extending line of light L1 as on the picture of light source A, and meanwhile, the light L0 that light source A sends has part and injects glass, rear surface at glass is reflected, reflected light L2 is again through front surface transmission and incide eyes, the picture of human eye using the some A2 on light L2 reverse extending line as light source A, therefore, human eye can be seen two picture A1 and A2, occurs ghost image.
Prior art has proposed following several solutions:
1, paste at the front surface of windshield the reflectance coating that a reflectivity is higher, weaken the reflection of windshield rear surface.The method is the most common, have some effects, but effect is not ideal enough, and the reflectance coating color that simultaneously reflectivity is higher is darker, is attached on windshield not attractive in appearancely, also can affect sight line.
2, Chinese patent application CN101952776A-" display system " proposes a kind of scheme, as Fig. 2, through the phase modulator 114 on transparency carrier 112 reflect, the polarization image P2 of transmission and polarized light S2 and S3 invest beholder simultaneously, be provided with and can lead to P2 in human eye front, every the polarization element 120 of S2, S3, make human eye can only receive P2 light, thereby eliminate ghost phenomena.This system is for the vehicle-mounted limitation that exists while looking squarely device:
Project image onto on windshield if set it as head-up display, still can not really eliminate ghost image.If install onboard as a whole set of system, can realize elimination ghost image, but information not to present on windshield.As using transparency carrier 112 as windshield, phase modulator 114 just need to be accomplished, on windshield, extremely to affect attractive in appearance.In addition the more inconvenient installation of polarizer 120.Above-mentioned limitation makes it be difficult to be applied on car.
3, Chinese patent application CN1101888927A-" curved vehicle windshield of being made up of laminated glass " proposes, and eliminates ghost image by wedge shape thermoplasticity intermediate film.As Fig. 3, due to the effect of wedge film 301, the light L0 sending from A place is after the reflection of glass refraction and rear surface, emergent light L2 is to the deflection of wedge shape thickness end, in driver's sight line, emergent light L2 can be crossing somewhere with the reverse extending line of the light L1 being reflected by glass front, makes driver only see a sub-picture.This technology reality elimination ghost image, but the angle of wedge film is required harsh, there is certain effective visual line of sight in it, exceeds this scope and also can see ghost image, needs customize according to actual conditions in advance in the time that HUD equipment is installed.
Such scheme all not can solve the ghost image problem of looking squarely display system, is necessary to propose a kind of novel ghost image eliminated and head-up display simple in structure.
Utility model content
The purpose of this utility model is to provide a kind of anti-ghost display device at ordinary times, is intended to effectively eliminate ghost image by simple structure, improves the quality that shows image, facilitates driver to grasp clearly in real time driving condition.
The utility model is to realize like this, a kind of anti-ghost head-up display, be installed in automobile, comprise to the projector equipment of the front windshield projects images of described automobile, in described projector equipment, be provided with the phase-modulation sheet that incident light can be converted to linearly polarized light; Also comprise the polaroid that is arranged at described front windshield inside, the transmission direction of described polaroid is vertical with the polarization direction of the predominant wavelength of the linearly polarized light of injecting through the front surface of described front windshield.
Further,
Described projector equipment comprises DLP projector and for the emergent light of described DLP projector being carried out to the catoptron group of multiple reflections.
Described phase-modulation sheet is arranged at the light output end of described catoptron group.
Only partial poolarized light or the linearly polarized light of described catoptron group output.
The anti-ghost head-up display that the utility model provides by arranging phase-modulation sheet in projector equipment, and be embedded in polaroid at front windshield, the transmission direction that makes polaroid is vertical with the polarization direction of predominant wavelength of linearly polarized light of injecting front windshield, stop the light of injecting front windshield to be reflexed to human eye by the rear surface of front windshield, and then eliminate ghost image.This device anti-ghost is effective, and simple for structure, a built-in phase-modulation sheet and be embedded in polaroid at front windshield in projector equipment, all can not cause structural complicated, need be in automobile or front windshield surface increase miscellaneous part, and be not subject to the restriction of visual line of sight, apply convenient and do not affect the appearance.
Brief description of the drawings
Fig. 1 is the structure of head-up display in prior art and the schematic diagram that occurs ghost image;
Fig. 2 is structure and the index path of a kind of display system of the prior art;
Fig. 3 is a kind of structure and index path of looking squarely display system of the prior art;
Fig. 4 is structure and the index path of the anti-ghost head-up display that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 4 shows structure and the index path of the anti-ghost head-up display that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant to the present embodiment.
Refer to Fig. 4, the anti-ghost head-up display that the utility model embodiment provides comprises: projector equipment 101, be placed in automotive interior position, and polaroid 102, embed shield glass 103 inside, be tending towards parallel with the surface of front windshield 103, be appreciated that, the surface of front windshield 103 has certain radian, and polaroid 102 is planar structure, therefore approximate parallel with front windshield 103.In projector equipment 101, be provided with projector 1011, in order to output image, in projector equipment 101, on the path of image transmitting, be also provided with the phase-modulation sheet 104 that incident light can be converted to linearly polarized light, corresponding with phase-modulation sheet 104, the polarization direction of the predominant wavelength of the linearly polarized light that the transmission direction (polarization direction of transmitted light) of polaroid 102 is injected with the front surface 1031 through front windshield 103 is vertical.
The optical principle of this anti-ghost device is: projector 1011 output images in projector equipment 101, after a series of reflections, image beam P0 is through phase-modulation sheet 104, after the modulating action of phase-modulation sheet 104, become the linearly polarized light P1 of fixing polarization direction, the front windshield 103 of this linearly polarized light P1 incident automobile after projector equipment 101 outputs, its incoming position is according to the visual line of sight of looking squarely setting in advance in driver, part linearly polarized light reflects through the front surface 1031 of front windshield 103, form a branch of image beam P2 and enter driver's eyes.Another part linearly polarized light is injected front windshield 103 inside through the front surface 1031 of front windshield 103, form refract light P3, from the characteristic of polarized light, linearly polarized light P1 incides front windshield 103 surfaces, owing to inciding glass by air, be to incide optically denser medium by optically thinner medium, reflected light P2 and refract light P3 are still linearly polarized light (refract light P3 is also denoted as linearly polarized light P3), but polarization direction changes.Its change situation and incident angle, and the refraction coefficient of material is relevant.Because the transmission direction of polaroid 102 is vertical with the polarization direction of the predominant wavelength of linearly polarized light P3, the major part of linearly polarized light P3 is blocked, cannot see through polaroid 102, and the linearly polarized light that only has little amount sees through polaroid 102, the light seeing through is denoted as linearly polarized light P4, this part linearly polarized light P4 reflects and is lost again in the rear surface 1032 of front windshield 103, is minute quantity finally by later surperficial 1032 light that reflect and pass through polaroid 102, negligible.Like this, the linearly polarized light that enters front windshield 103 cannot penetrate front windshield again, can not enter driver's eyes, and driver can only see the sub-picture reflecting through the front surface 1031 of front windshield 103, thereby eliminate ghost image, improved picture quality.
The anti-ghost head-up display that the utility model embodiment provides by arranging phase-modulation sheet 104 in projector equipment 101, and be embedded in polaroid 102 at front windshield 103, make the polarization direction of the linearly polarized light P3 predominant wavelength that the transmission direction of polaroid 102 injects with the front surface 1031 from front windshield vertical, stop the light of injecting front windshield 103 to be reflexed to human eye by the rear surface 1032 of front windshield 103, and then eliminate ghost image.This device anti-ghost is effective, and simple for structure, a built-in phase-modulation sheet 104 and be embedded in polaroid 102 at front windshield 103 in projector equipment 101, all can not cause structural complicated, need be in automobile or front windshield surface increase miscellaneous part, and be not subject to the restriction of visual line of sight, apply convenient and do not affect the appearance.
Further, the projector 1011 in projector equipment 101 can adopt DLP projector, on the transmission path of the output light of this DLP projector, is provided with the catoptron group 1012 of emergent light being carried out to multiple reflections.This phase-modulation sheet 104 is arranged at the light output end of catoptron group 1012, is positioned on the reflected light path of last sheet catoptron.The image that projector 1011 is exported, after catoptron group 1012 multiple reflections, may be partial poolarized light, may be also linearly polarized light.And no matter be which kind of light, it is linearly polarized light after phase-modulation sheet 104.
Further, DLP projector comprises light source, and this light source can be specifically LASER Light Source, and this LASER Light Source can produce the partial poolarized light of proximal line polarization.Be appreciated that DLP projector also comprises other functional structures, the present embodiment describes in detail no longer one by one.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. an anti-ghost head-up display, is installed in automobile, it is characterized in that, comprises to the projector equipment of the front windshield projects images of described automobile, is provided with the phase-modulation sheet that incident light can be converted to linearly polarized light in described projector equipment; Also comprise the polaroid that is arranged at described front windshield inside, the transmission direction of described polaroid is vertical with the polarization direction of the predominant wavelength of the linearly polarized light of injecting through the front surface of described front windshield.
2. anti-ghost head-up display as claimed in claim 1, is characterized in that, described projector equipment comprises DLP projector and for the emergent light of described DLP projector being carried out to the catoptron group of multiple reflections.
3. anti-ghost head-up display as claimed in claim 2, is characterized in that, described phase-modulation sheet is arranged at the light output end of described catoptron group.
4. anti-ghost head-up display as claimed in claim 2 or claim 3, is characterized in that, only partial poolarized light or the linearly polarized light of described catoptron group output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025209.9U CN203688913U (en) | 2014-01-15 | 2014-01-15 | Anti-ghost head-up display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025209.9U CN203688913U (en) | 2014-01-15 | 2014-01-15 | Anti-ghost head-up display device |
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| Publication Number | Publication Date |
|---|---|
| CN203688913U true CN203688913U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420025209.9U Expired - Lifetime CN203688913U (en) | 2014-01-15 | 2014-01-15 | Anti-ghost head-up display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792662A (en) * | 2014-01-15 | 2014-05-14 | 深圳市矽韦氏科技有限公司 | Double-image-eliminating head-up display device |
| CN104608695A (en) * | 2014-12-17 | 2015-05-13 | 杭州云乐车辆技术有限公司 | Vehicle-mounted electronic rearview mirror head-up displaying device |
| US9946064B1 (en) * | 2017-01-20 | 2018-04-17 | E-Lead Electronic Co., Ltd. | Anti-ghosting reflection device and a display system with the same |
| US10845593B2 (en) | 2017-09-25 | 2020-11-24 | Samsung Electronics Co., Ltd. | Display device for displaying virtual images |
| CN113272714A (en) * | 2019-02-15 | 2021-08-17 | 麦克赛尔株式会社 | Vehicle information display device and vehicle information display system |
| CN115128814A (en) * | 2016-09-06 | 2022-09-30 | 麦克赛尔株式会社 | Head-up display |
-
2014
- 2014-01-15 CN CN201420025209.9U patent/CN203688913U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792662A (en) * | 2014-01-15 | 2014-05-14 | 深圳市矽韦氏科技有限公司 | Double-image-eliminating head-up display device |
| CN103792662B (en) * | 2014-01-15 | 2016-08-17 | 深圳点石创新科技有限公司 | A kind of anti-ghost head-up display |
| CN104608695A (en) * | 2014-12-17 | 2015-05-13 | 杭州云乐车辆技术有限公司 | Vehicle-mounted electronic rearview mirror head-up displaying device |
| CN115128814A (en) * | 2016-09-06 | 2022-09-30 | 麦克赛尔株式会社 | Head-up display |
| CN115128814B (en) * | 2016-09-06 | 2023-09-15 | 麦克赛尔株式会社 | Head-up display |
| US9946064B1 (en) * | 2017-01-20 | 2018-04-17 | E-Lead Electronic Co., Ltd. | Anti-ghosting reflection device and a display system with the same |
| US10845593B2 (en) | 2017-09-25 | 2020-11-24 | Samsung Electronics Co., Ltd. | Display device for displaying virtual images |
| CN113272714A (en) * | 2019-02-15 | 2021-08-17 | 麦克赛尔株式会社 | Vehicle information display device and vehicle information display system |
| CN113272714B (en) * | 2019-02-15 | 2023-09-08 | 麦克赛尔株式会社 | Vehicle information display device and vehicle information display system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN DIANSHI INNOVATION TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN SIVISION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Nanshan District South Road four Keyuan Road West R4 innovation building A 409B Patentee after: SHENZHEN DIANSHI INNOVATION TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District South Road four Keyuan Road West R4 innovation building A 409B Patentee before: SHENZHEN SIVISION TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |