CN109870813A - A kind of AR-HUD light path system using PBS polarization spectro piece - Google Patents
A kind of AR-HUD light path system using PBS polarization spectro piece Download PDFInfo
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- CN109870813A CN109870813A CN201910202581.XA CN201910202581A CN109870813A CN 109870813 A CN109870813 A CN 109870813A CN 201910202581 A CN201910202581 A CN 201910202581A CN 109870813 A CN109870813 A CN 109870813A
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- polarization spectro
- spectro piece
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Abstract
The present invention relates to AR-HUD technical fields, specifically disclose a kind of AR-HUD light path system using PBS polarization spectro piece, projective module group including being placed in PBS polarization spectro piece bottom, and imaging system composed by the reflection-type diffuser plate as successively putting from left to right, 1/4 slide, the PBS polarization spectro piece, free-form surface mirror, it further include the extinction machanism being placed in above the PBS polarization spectro piece, the free-form surface mirror is placed in the left side of the PBS polarization spectro piece.1/4 slide and PBS polarization spectro piece is added in the present invention between projective module group and reflection-type diffuser plate, imaging ray is by light splitting, the folding between PBS polarization spectro piece, 1/4 slide and reflection-type diffuser plate, to which the imaging of P-polarized light enters human eye, so that the clear image that driver can see having on polarized sunglasses, also significantly reduces the volume of AR-HUD under the premise of guaranteeing imaging effect.
Description
Technical field
The present invention relates to AR-HUD technical field more particularly to a kind of AR-HUD optical path systems using PBS polarization spectro piece
System.
Background technique
The full name of HUD is Head Up Display, i.e. head-up display, is applied on military aircraft earliest.Last century 80
In the age, HUD starts to be applied to automobile, so that driver is in driving procedure it is not necessary that sight is transferred to instrument board or middle control
On, enable driver while guaranteeing normal driving, be concerned about the indices of automobile, promotes the safety and just of driving
Victory.The information that HUD is projected is mainly the driving condition index of automobile, such as speed, oil mass etc. shown on instrument board
Information；Further, designer wishes the target that intelligent driving is realized by HUD, and AR-HUD projector distance is remote, and field angle is big,
Imaging can cover lane or more, combine imaging can with actual environment road conditions, enhance the three-dimensional sense of display.
What automotive windshield was largely reflected through glass at present is S polarized light, transmitting P-type polarisation light, when driver puts on polarisation
When sunglasses (key reflections S polarized light, transmitting P-type polarisation light) because polarized sunglasses block also be exactly S polarized light, institute
Almost not see image, the auxiliary information that driver obtains AR-HUD projection is influenced.
Summary of the invention
The technical issues of present invention provides a kind of AR-HUD light path system using PBS polarization spectro piece, solution is: existing
AR-HUD is when driver is with polarized sunglasses, since its polarized light property causes the driver for wearing polarized sunglasses almost to see not
The image information of clear HUD projection.
In order to solve the above technical problems, the present invention provides a kind of AR-HUD light path system using PBS polarization spectro piece, packet
Include the projective module group for being placed in PBS polarization spectro piece bottom, and the reflection-type diffuser plate by successively putting from left to right, 1/4 glass
Piece, the PBS polarization spectro piece, imaging system composed by free-form surface mirror, further include being placed in the PBS polarization spectro
Extinction machanism above piece, the free-form surface mirror are placed in the left side of the PBS polarization spectro piece；
The projection information of the projective module group outgoing becomes the first P polarization light beam by the PBS polarization spectro piece and S is inclined
Shake light beam；The first P polarization light beam is got on the extinction machanism through the PBS polarization spectro piece；The S polarized light
Beam is transformed into the first P using 1/4 slide and the reflection-type diffuser plate after PBS polarization spectro piece reflection
Light beam is simultaneously successively reflected through the free-form surface mirror and windshield through the PBS polarization spectro piece, in human eye
Imaging.
Further, it is added in the inner surface of the windshield outside P-polarized light reflection interlayer or inner surface and is coated with P polarization
Optical reflection film.
Preferably, 1/4 slide is placed in front of the reflection-type diffuser plate.
Preferably, the projective module group uses DLP projective module group.
It is another preferably, the projective module group use laser or TFT projective module group.
Preferably, the free-form surface mirror is designed as freely overturning in default ± angular range.
A kind of AR-HUD light path system using PBS polarization spectro piece provided by the invention, the light warp that projective module group issues
It is divided into polarised light the first P polarization light beam and S-polarization light beam after crossing PBS polarization spectro piece, due to the saturating P polarization of PBS polarization spectro piece
Light, reflection S polarized light, therefore the first P polarization light beam for passing through the transmission of PBS polarization spectro piece is got on extinction machanism, makes it no longer
Into imaging system, prevent from forming veiling glare.And the S-polarization light beam for passing through the reflection of PBS polarization spectro piece passes through 1/4 slide for the first time
Afterwards, the polarised light for becoming to differ 45 ° with original polarization direction passes through 1/4 slide at second by the reflection of reflection-type diffuser plate
Polarization direction rotates 45 ° again and becomes the second P polarization light beam, reaches free-form surface mirror and is reflected by it on windshield,
Windshield surface is coated with or close to one layer of P polarization optical reflection film, therefore the second P polarization light beam is reflected by windshield, in people
The imaging of eye position；
1/4 slide and PBS polarization spectro piece, imaging ray is added in the present invention between projective module group and reflection-type diffuser plate
By light splitting, the folding between PBS polarization spectro piece, 1/4 slide and reflection-type diffuser plate, so that the imaging of P-polarized light enters
Human eye, so that the clear image that driver can see having on polarized sunglasses, also big under the premise of guaranteeing imaging effect
The earth reduces the volume of AR-HUD.
Detailed description of the invention
Fig. 1 is that a kind of structure of AR-HUD light path system using PBS polarization spectro piece provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is in windshield inner surface provided in an embodiment of the present invention plus P-polarized light reflects the schematic diagram of interlayer；
Fig. 3 is the schematic diagram that P polarization optical reflection film is plated outside windshield inner surface provided in an embodiment of the present invention；
Wherein: projective module group 1, PBS polarization spectro piece 23, extinction machanism 3, reflection-type diffuser plate 21,1/4 slide 22, from
Interlayer 41, P polarization optical reflection film 42 are reflected by curved reflector 24, windshield 4, P-polarized light.
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, attached drawing is only preferred embodiment, and it is only for reference and illustrate use, it does not constitute to this hair
The limitation of bright scope of patent protection, because can be carried out to the present invention many on the basis of not departing from spirit and scope of the invention
Change.
A kind of AR-HUD light path system using PBS polarization spectro piece that inventive embodiments provide, as shown in Figure 1, including
It is placed in the projective module group 1 of 23 bottom of PBS polarization spectro piece, and the reflection-type diffuser plate 21,1/4 by successively putting from left to right
Slide 22, the PBS polarization spectro piece 23, imaging system 2 composed by free-form surface mirror 24, further include be placed in it is described
The extinction machanism 3 of 23 top of PBS polarization spectro piece, the free-form surface mirror 24 are placed in the PBS polarization spectro piece 23
Left side；
The projection information that the projective module group 1 is emitted by the PBS polarization spectro piece 23 become the first P polarization light beam and
S-polarization light beam；The first P polarization light beam is got on the extinction machanism 3 through the PBS polarization spectro piece 23；The S
Light beam is after the PBS polarization spectro piece 23 reflection, using 1/4 slide 22 and the reflection-type diffuser plate 21
It is transformed into the first P polarization light beam and through the PBS polarization spectro piece 23 successively through the free-form surface mirror 24 and windscreen
Glass 4 reflects, in eyes imaging.
In the preferred embodiment, as shown in Fig. 2, needing to be added P-polarized light reflection folder in 4 inner surface of the windshield
Layer 41, or as shown in figure 3, it is coated with P polarization optical reflection film 42 outside 4 inner surface of the windshield, for reflected P polarization
Light.
In the preferred embodiment, 1/4 slide 22 is placed in 21 front of reflection-type diffuser plate.
Preferably, the projective module group 1 uses DLP projective module group, because DLP is small in size, light utilization efficiency is high, and high brightness is high
Resolution ratio is suitble to the limited environment of interior space.The projective module group 1 can also use laser or TFT projective module group, but account for
It is then bigger than the present embodiment with volume.
In the present embodiment, the free-form surface mirror 24 is designed as freely overturning in default ± angular range,
To adapt to the driver of different heights, so that it is obtained best view of seeing and experience.
Referring again to Fig. 1, wherein fine line represents P-polarized light, and dotted line represents S polarized light, and heavy line represents projective module group 1
Emergent ray, arrow direction represents the direction of propagation of light.It is provided by the invention a kind of using PBS polarization spectro piece
AR-HUD light path system, the light that projective module group 1 issues are divided into polarised light the first P polarization light beam after PBS polarization spectro piece 23
With S-polarization light beam, due to the saturating P-polarized light of PBS polarization spectro piece 23, reflection S polarized light, therefore it is saturating to pass through PBS polarization spectro piece 23
The the first P polarization light beam penetrated is got on extinction machanism 3, so that it is not entered back into imaging system 2, is prevented from forming veiling glare.And pass through PBS
The S-polarization light beam that polarization spectro piece 23 reflects after 1/4 slide 22, becomes to differ 45 ° with original polarization direction for the first time
Polarised light becomes the 2nd P rotating 45 ° again by 1/4 slide, 22 polarization direction by second of the reflection of reflection-type diffuser plate 21
Light beam, reach free-form surface mirror 24 simultaneously be reflected by it on windshield 4,4 surface of windshield be coated with or close to
One layer of P polarization optical reflection film 42 (or be equipped with P-polarized light inside windshield and reflect interlayer), therefore the second P polarization light beam passes through wind
It keeps off glass 4 to reflect, be imaged in position of human eye.
1/4 slide 22 and PBS polarization spectro is added in the embodiment of the present invention between projective module group 1 and reflection-type diffuser plate 21
Piece 23, imaging ray is by the folding between PBS polarization spectro piece 23 and 1/4 slide 22, so that the imaging of P-polarized light enters people
Eye, so that the clear image that driver can see having on polarized sunglasses, under the premise of guaranteeing imaging effect also significantly
Ground reduces the volume of AR-HUD.
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 (6)
1. a kind of AR-HUD light path system using PBS polarization spectro piece, which is characterized in that including being placed in PBS polarization spectro piece
The projective module group of bottom, and the reflection-type diffuser plate by successively putting from left to right, 1/4 slide, the PBS polarization spectro
Imaging system composed by piece, free-form surface mirror further includes the extinction machanism being placed in above the PBS polarization spectro piece,
The free-form surface mirror is placed in the left side of the PBS polarization spectro piece；
The projection information of the projective module group outgoing becomes the first P polarization light beam and S polarized light by the PBS polarization spectro piece
Beam；The first P polarization light beam is got on the extinction machanism through the PBS polarization spectro piece；The S-polarization light beam warp
After crossing the PBS polarization spectro piece reflection, it is transformed into the first P polarization using 1/4 slide and the reflection-type diffuser plate
Light beam is simultaneously successively reflected through the free-form surface mirror and windshield through the PBS polarization spectro piece, in eyes imaging.
2. a kind of AR-HUD light path system using PBS polarization spectro piece as described in claim 1, it is characterised in that: described
It is added in the inner surface of windshield outside P-polarized light reflection interlayer or inner surface and is coated with P polarization optical reflection film.
3. a kind of AR-HUD light path system using PBS polarization spectro piece as described in claim 1, it is characterised in that: described
1/4 slide is placed in front of the reflection-type diffuser plate.
4. a kind of AR-HUD light path system using PBS polarization spectro piece as described in claim 1, it is characterised in that: described
Projective module group uses DLP projective module group.
5. a kind of AR-HUD light path system using PBS polarization spectro piece as described in claim 1, it is characterised in that: described
Projective module group uses laser or TFT projective module group.
6. a kind of AR-HUD light path system using PBS polarization spectro piece as described in claim 1, it is characterised in that: described
Free-form surface mirror is designed as freely overturning in default ± angular range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202581.XA CN109870813A (en) | 2019-03-18 | 2019-03-18 | A kind of AR-HUD light path system using PBS polarization spectro piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202581.XA CN109870813A (en) | 2019-03-18 | 2019-03-18 | A kind of AR-HUD light path system using PBS polarization spectro piece |
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| CN109870813A true CN109870813A (en) | 2019-06-11 |
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| CN201910202581.XA Pending CN109870813A (en) | 2019-03-18 | 2019-03-18 | A kind of AR-HUD light path system using PBS polarization spectro piece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908124A (en) * | 2019-12-23 | 2020-03-24 | 浙江水晶光电科技股份有限公司 | HUD light path system, control method thereof and HUD display device |
| US11209653B2 (en) | 2019-12-16 | 2021-12-28 | Acer Incorporated | Near-eye display apparatus |
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| CN104834090A (en) * | 2014-02-11 | 2015-08-12 | 尚立光电股份有限公司 | Head-up display |
| CN108152872A (en) * | 2014-10-10 | 2018-06-12 | 日本化药株式会社 | Optical reflection film and light control film, optical film, functional glass and the head-up display using the optical reflection film |
| CN108594442A (en) * | 2018-06-19 | 2018-09-28 | 惠州市华阳多媒体电子有限公司 | A kind of HUD light path systems reducing TFT sunlights evil |
| CN108594438A (en) * | 2018-06-19 | 2018-09-28 | 惠州市华阳多媒体电子有限公司 | A kind of HUD light path systems for coordinating polarisation sunglasses to use and eliminating ghost image |
| KR20180137789A (en) * | 2017-06-19 | 2018-12-28 | 에스케이텔레콤 주식회사 | Image display apparatus |
| CN109100866A (en) * | 2018-10-22 | 2018-12-28 | 萤欧（上海）汽车科技有限公司 | A kind of vehicle-mounted AR-HUD optical system based on liquid crystal polarized direction rotator |
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2019
- 2019-03-18 CN CN201910202581.XA patent/CN109870813A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834090A (en) * | 2014-02-11 | 2015-08-12 | 尚立光电股份有限公司 | Head-up display |
| CN108152872A (en) * | 2014-10-10 | 2018-06-12 | 日本化药株式会社 | Optical reflection film and light control film, optical film, functional glass and the head-up display using the optical reflection film |
| KR20180137789A (en) * | 2017-06-19 | 2018-12-28 | 에스케이텔레콤 주식회사 | Image display apparatus |
| CN108594442A (en) * | 2018-06-19 | 2018-09-28 | 惠州市华阳多媒体电子有限公司 | A kind of HUD light path systems reducing TFT sunlights evil |
| CN108594438A (en) * | 2018-06-19 | 2018-09-28 | 惠州市华阳多媒体电子有限公司 | A kind of HUD light path systems for coordinating polarisation sunglasses to use and eliminating ghost image |
| CN109100866A (en) * | 2018-10-22 | 2018-12-28 | 萤欧（上海）汽车科技有限公司 | A kind of vehicle-mounted AR-HUD optical system based on liquid crystal polarized direction rotator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11209653B2 (en) | 2019-12-16 | 2021-12-28 | Acer Incorporated | Near-eye display apparatus |
| CN110908124A (en) * | 2019-12-23 | 2020-03-24 | 浙江水晶光电科技股份有限公司 | HUD light path system, control method thereof and HUD display device |
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Application publication date: 20190611 |
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