CN108761797A - A kind of projection module applied to WHUD - Google Patents
A kind of projection module applied to WHUD Download PDFInfo
- Publication number
- CN108761797A CN108761797A CN201810855755.8A CN201810855755A CN108761797A CN 108761797 A CN108761797 A CN 108761797A CN 201810855755 A CN201810855755 A CN 201810855755A CN 108761797 A CN108761797 A CN 108761797A
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- CN
- China
- Prior art keywords
- whud
- projection
- tft
- image source
- even screen
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000003287 optical effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 241001424688 Enceliopsis Species 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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)
- Instrument Panels (AREA)
Abstract
The present invention relates to WHUD technical fields, specifically disclose a kind of projection module applied to WHUD, including image source, projection objective, even screen, and the light that the image source is sent out projects after projection objective projection on the even screen.A kind of projection module applied to WHUD provided by the invention, increase projection objective and even screen between speculum group in existing image source (LED backlight of TFT and the TFT), the TFT pictures being emitted are copied on even screen, because the even screen is placed on original light source position, the drop shadow effect of entire WHUD is not influenced, on this basis, even screen is broken up the inverse sunlight gathered on its surface using heat safe diffuser plate, make that the TFT in image source can not be reached along the sunlight that light path inversely enters, to avoid TFT from being damaged.
Description
Technical field
The present invention relates to WHUD technical fields more particularly to a kind of projection modules applied to WHUD.
Background technology
Windscreen formula head up display (windshield HUD abbreviation WHUD) is set as a kind of routine of driving assistance system
It sets, plays an important role for driving display, WHUD display screens directly use the windshield of automobile, display effect more one
Body, it helps moulding is arranged.
When the WHUD of big FOV is irradiated by a large amount of sunrays, part sunray inversely focuses on the TFT of outgoing light source
Bring amount of heat in surface so that image source temperature quickly increases, and to seriously affect the service life of TFT, or even directly burns out
TFT。
Invention content
The technical issues of present invention provides a kind of projection module applied to WHUD, solution is that the WHUD of big FOV is by big
When measuring sunray irradiation, part sunray inversely focuses on the surfaces TFT of outgoing light source, brings amount of heat so that as
Source temperature quickly increases, and to seriously affect the service life of TFT, or even directly burns out TFT.
In order to solve the above technical problems, the present invention provides a kind of projection module applied to WHUD, is set in WHUD, including
Image source, projection objective, even screen, the light that the image source is sent out project the even light after projection objective projection
On screen.
Preferably, the image source includes the LED backlight of TFT and the TFT.
Preferably, the even screen is heat safe diffuser plate.
Preferably, speculum group, dust-proof LENS are additionally provided in the WHUD, the light projected from the even screen passes through institute
It states speculum group reflection and penetrates the dust-proof LENS and reach on the windshield of automobile and be imaged.
Preferably, the speculum group includes plane mirror and curved reflector, the light projected from the even screen
It is reflected into the curved reflector by the plane mirror, the curved reflector is further reflected into described dust-proof
LENS。
Preferably, the projection coefficient of the projection objective is 1:1.
A kind of projection module applied to WHUD provided by the invention, in the existing image source (LED backlight of TFT and the TFT
Source) increase projection objective and even screen between speculum group, the picture that image source is emitted is copied on even screen, because will
The even screen is placed on original light source position, is not influenced on the drop shadow effect of entire WHUD, on this basis, even optical screen
Curtain is broken up the inverse sunlight gathered on its surface using heat safe diffuser plate, makes not arriving along the sunlight that light path inversely enters
Up to the TFT in image source, to avoid TFT from being damaged.
Description of the drawings
Fig. 1 is a kind of light channel structure figure of projection module applied to WHUD provided in an embodiment of the present invention；
Fig. 2 is the light channel structure figure of the WHUD of projection module applied to WHUD provided in an embodiment of the present invention a kind of.
Specific implementation mode
Embodiments of the present invention are specifically illustrated below in conjunction with the accompanying drawings, 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 to use, and does not constitute to patent protection of the present invention
The limitation of range can carry out many changes because on the basis of not departing from spirit and scope of the invention to the present invention.
A kind of projection module 1 applied to WHUD provided in an embodiment of the present invention, light channel structure is as shown in Figure 1, include
Image source 11, projection objective 12, even screen 13, the light that the image source 11 is sent out project after the projection of the projection objective 12
Onto the even screen 13.The projection coefficient of the projection objective 12 is 1:1, the picture that TFT image sources 11 are emitted can be replicated
Onto even screen 13, to not influence the drop shadow effect of entire WHUD.
As a preferred embodiment of the present invention, the image source 11 includes that the LED of the TFT11-1 and TFT11-1 is carried on the back
Light source 11-2.The even screen 13 is preferably by heat safe diffuser plate, so as to by the inverse sun gathered on its surface
Light is broken up, and makes that the TFT11-1 in image source 11 can not be reached along the sunlight that light path inversely enters.
It is applied in WHUD in projection module 1 provided in this embodiment, with reference to the light channel structure of figure 2, in the WHUD also
It should be equipped with speculum group 2, dust-proof LENS3, the light projected from the even screen 13 is reflected by the speculum group 2 and worn
The dust-proof LENS3 is reached on the windshield 4 of automobile and is imaged thoroughly.More specifically, the speculum group 2 includes plane reflection
Mirror 21 and curved reflector 22, the light projected from the even screen 13 are reflected into the curved surface by the plane mirror 21
Speculum 22, the curved reflector 22 are further reflected into the dust-proof LENS3.
A kind of projection module 1 applied to WHUD provided in an embodiment of the present invention, in existing image source 11 (TFT11-1 and institute
State the LED backlight 11-2 of TFT11-1) increase projection objective 12 and even screen 13 between speculum group 2, by TFT11-1
The picture of outgoing copies on even screen 13, because the even screen 13 is placed on original light source position, to entire WHUD
Drop shadow effect do not influence, on this basis, even screen 13 using heat safe diffuser plate by it is inverse gather its surface too
Sunlight is broken up, and makes that the TFT11-1 in TFT11-1 image sources 11 can not be reached along the sunlight that light path inversely enters, to avoid
TFT11-1 is damaged.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (6)
1. a kind of projection module applied to WHUD is set in WHUD, which is characterized in that including image source, projection objective, even optical screen
Curtain, the light that the image source is sent out project after projection objective projection on the even screen.
2. a kind of projection module applied to WHUD as described in claim 1, it is characterised in that：The image source include TFT and
The LED backlight of the TFT.
3. a kind of projection module applied to WHUD as claimed in claim 1 or 2, it is characterised in that：The even screen is
Heat safe diffuser plate.
4. a kind of projection module applied to WHUD as described in claim 1, it is characterised in that：It is additionally provided in the WHUD anti-
Microscope group, dust-proof LENS are penetrated, the light projected from the even screen reflects by the speculum group and penetrates the dust-proof LENS
It reaches on the windshield of automobile and is imaged.
5. a kind of projection module applied to WHUD as described in claim 1, it is characterised in that：The speculum group includes flat
Face speculum and curved reflector, it is anti-that the light projected from the even screen by the plane mirror is reflected into the curved surface
Mirror is penetrated, the curved reflector is further reflected into the dust-proof LENS.
6. a kind of projection module applied to WHUD as described in claim 1, it is characterised in that：The projection of the projection objective
Coefficient is 1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810855755.8A CN108761797A (en) | 2018-07-31 | 2018-07-31 | A kind of projection module applied to WHUD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810855755.8A CN108761797A (en) | 2018-07-31 | 2018-07-31 | A kind of projection module applied to WHUD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108761797A true CN108761797A (en) | 2018-11-06 |
Family
ID=63968263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810855755.8A Pending CN108761797A (en) | 2018-07-31 | 2018-07-31 | A kind of projection module applied to WHUD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108761797A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017026675A (en) * | 2015-07-16 | 2017-02-02 | パナソニックＩｐマネジメント株式会社 | Head-up display |
| TWM544002U (en) * | 2017-02-15 | 2017-06-21 | E-Lead Electronic Co Ltd | Narrow angle dispersion piece head-up display device |
| JP2017134105A (en) * | 2016-01-25 | 2017-08-03 | アルプス電気株式会社 | On-vehicle display device |
| CN206523704U (en) * | 2017-02-13 | 2017-09-26 | 怡利电子工业股份有限公司 | Narrow angle diffusion sheet new line display device |
| CN107683433A (en) * | 2015-06-17 | 2018-02-09 | 株式会社电装 | Head-up display |
| CN107735718A (en) * | 2015-06-26 | 2018-02-23 | 株式会社电装 | Head-up display |
| TWI622505B (en) * | 2017-02-15 | 2018-05-01 | E Lead Electronic Co Ltd | Narrow-angle diffuser head-up display device |
-
2018
- 2018-07-31 CN CN201810855755.8A patent/CN108761797A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107683433A (en) * | 2015-06-17 | 2018-02-09 | 株式会社电装 | Head-up display |
| CN107735718A (en) * | 2015-06-26 | 2018-02-23 | 株式会社电装 | Head-up display |
| JP2017026675A (en) * | 2015-07-16 | 2017-02-02 | パナソニックＩｐマネジメント株式会社 | Head-up display |
| JP2017134105A (en) * | 2016-01-25 | 2017-08-03 | アルプス電気株式会社 | On-vehicle display device |
| CN206523704U (en) * | 2017-02-13 | 2017-09-26 | 怡利电子工业股份有限公司 | Narrow angle diffusion sheet new line display device |
| TWM544002U (en) * | 2017-02-15 | 2017-06-21 | E-Lead Electronic Co Ltd | Narrow angle dispersion piece head-up display device |
| TWI622505B (en) * | 2017-02-15 | 2018-05-01 | E Lead Electronic Co Ltd | Narrow-angle diffuser head-up display device |
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