CN108594433A - A kind of high efficiency head up display lighting system using polar biased photoconverter - Google Patents
A kind of high efficiency head up display lighting system using polar biased photoconverter Download PDFInfo
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- CN108594433A CN108594433A CN201810284360.7A CN201810284360A CN108594433A CN 108594433 A CN108594433 A CN 108594433A CN 201810284360 A CN201810284360 A CN 201810284360A CN 108594433 A CN108594433 A CN 108594433A
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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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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The present invention relates to display lighting technical fields, specifically disclose a kind of high efficiency head up display lighting system using polar biased photoconverter, including luminescence unit, and the front of luminescence unit is equipped with collimation lens；Polar biased light birefringent plate, for receiving the light by luminescence unit and collimation lens incidence；Microlens array, for receiving incident P polar biased light and S polar biased light；Polarisation dress changes piece, is set to the light emission side of lens array.Non-polarization light is divided into the light of P polar biased light and S polar biased light by polar biased light birefringent plate and is projected with different angle by the present invention, light is after microlens array optically focused and refraction with equidirectional and symmetric mode projects side by side, the polar biased light for forming same nature by polarisation conversion sheet again imports display, to reduce the loss of light, and display brightness is improved, reduce power consumption.
Description
Technical field
The present invention relates to display lighting technical fields, specifically disclose a kind of high efficiency new line using polar biased photoconverter
Display illumination system.
Background technology
Head up display (Head Up Display, hereinafter referred to as HUD) is by the box body of virtual image optical projection system and photosynthetic
Grow up to be a useful person (Combiner) composition.It is to apply on fighter plane in early days, pilot can pass through light synthesizer and watch front scenery, together
When by device projection the virtual image obtain information watch instrument board without bowing.Due to being constantly progressive for science and technology, more advanced automobile
The system that industry also uses HUD gradually, and in HUD systems, the waste of light source how is reduced, enough brightness is provided, is subtracted
Few power consumption, reduces radiating requirements, the reliability for the HUD systems that concern, under the harsh environmental condition of vehicle systems, it appears especially
It is important.Therefore the design of the lighting system of HUD, which needs to be subject to again careful research and development, can just attain a yet higher goal.
Traditional head up display lighting system includes as shown in Figure 7 and Figure 8：Multiple light emitting sources 60, each hair
Light source 60 is all to cover a upper prefocus cup 601 by a light-emitting diode 602 to be constituted, and send out light source in light-emitting diode 602
Afterwards, light is projected outward via prefocus cup 601；Due to the Lambertian that light-emitting diode 602 is a small area
(Lambertian) light source, luminous intensity is in cosine function (cosine) relationship with light emitting angle, and the work of prefocus cup 601
With being that the light source of the diffusion of light-emitting diode 602 is carried out optically focused, to which the low-angle for forming tool directionality is parallel to be closer to
Large area (the outlet size of prefocus cup) direct light source of light.
One light-guiding pillar 61 is for accommodating above-mentioned light emitting source 60, and light-guiding pillar is that one one four sides is all high reflectance minute surface
Hollow cylinder, using direction in scheming as reference direction, lower section is incidence surface, and top is light-emitting surface, can be by the light of light emitting source 60
Emergent light is mixed via each prefocus cup 601, reaches mixed uniformly effect, and makes light-emitting surface direction of the light from light-guiding pillar 61
It projects.
One diffusion sheet 62 is set to 61 other end of light-guiding pillar（That is light-emitting surface）, the efficiency that adds diffusion sheet 62 is will be by leaded light
The light that 61 light-emitting surface of column projects, spreads appropriate angle and forms uniform area source, be used as useing rear LCD panel 63 as
Backlight and constitute existing lighting system.
And in traditional technology, the light-emitting diode 602 of light emitting source 60 covers a upper prefocus cup 601, and light is through being reflected towards
Before, have the consume of energy when light is through before being reflected towards, after the consume using light when diffusion sheet 62, although illumination light
Line changes homogeneous soft；But therefore therefore the angle of light can also be spread, it is difficult to concentrate on the special angle (visual field of HUD
Angle) and the visual range (Eye-box) of HUD in, this causes the waste of luminosity, and traditional illumination in use to HUD
System white light source reabsorbs the luminous energy of more than half by the polaroid in the liquid crystal display of rear, more reduces light source
Intensity, and light is easy diffusion and is not easy to concentrate, and this is the main disadvantage of traditional technology, therefore HUD needs preferably illumination system
System, just can make HUD more promote quality, more competitive.
Invention content
In order to overcome shortcoming and defect existing in the prior art, polar biased light is used the purpose of the present invention is to provide a kind of
The high efficiency head up display lighting system of converter.
To achieve the above object, the present invention uses following scheme.
A kind of high efficiency head up display lighting system using polar biased photoconverter, including：
An at least luminescence unit, the strength light directive front that can will be sent out；And the front of luminescence unit is equipped with collimation lens；
One polar biased light birefringent plate, for receiving light by luminescence unit and collimation lens incidence, and by the non-polarization of incidence
Collimated ray is divided into the light of P polar biased light and S polar biased light, and two light are projected with different angle respectively；
One group of microlens array, for receiving incident P polar biased light and S polar biased light；The microlens array is transparent cake knot
Structure body, the incidence surface of microlens array and light-emitting surface are in being mutually parallel, and incidence surface and light-emitting surface are equipped with opposite saturating in position
Lens array face；The lens array face is equipped with multiple continuous and compact arranged lens unit, so that P polar biased light and S polar biased light
Optically focused and refraction of the light through first lens unit, symmetrically enter each phase in second lens array face in cross
Corresponding lens unit, and the lens unit in second lens array face changes the direction of light beam, so that P polar biased light and S polar biased
Light is projected with equidirectional and side-by-side configuration；
One polarisation dress changes piece, is set to the light emission side of lens array；The polarisation dress changes piece and is equipped with coating arranged at equal interval, with structure
At with phase-delay characteristic polarisation transition zone and without the transparent area of phase-delay characteristic；The polarisation transition zone and
Transparent area is aligned with the lens unit in microlens array, and one group of polarisation transition zone and transparent area respectively account for a lens unit
The half of area；
Light is respectively formed the polar biased light of same nature after polarisation conversion sheet, is imaged with liquid crystal display.
Further, the lens unit be elongated cylindrical lens, and with the polarisation transition zone of polarisation conversion sheet and light transmission
The position in area is opposite.
Further, the microlens array is an integral molding structure.
Further, the microlens array is made of two pieces of half blocks with lens unit；Two and half block
For symmetrical blocky lens, and the outside of two halves block is protruded to form multiple continuous and close-packed arrays and be mutually aligned saturating
Mirror unit.
Further, the luminescence unit is single light source, and the collimation lens is only one group.
Further, the collimation lens is the array of a plurality of optical elements composition.
Further, the luminescence unit at least two.
Further, the luminescence unit is light-emitting diode.
Further, the polarisation transition zone in the polarisation conversion sheet has half-wave phase lag characteristic, and polarisation is converted
The phase delay axis of piece is in 45 degree with the electric field polarization direction of polar biased light.
Beneficial effects of the present invention：A kind of high efficiency head up display lighting system using polar biased photoconverter is provided,
Non-polarization light is divided into P polar biased light and S polar biased light by polar biased light birefringent plate and is projected with different angle, light is through micro-
Enter the polar biased light importing display that polarisation conversion sheet forms same nature after lens array optically focused and refraction, to reduce light
Loss, and improve display brightness, reduce power consumption.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the dimensional structure diagram of the embodiment of the present invention.
Fig. 3 is the polarisation conversion sheet structural schematic diagram of the embodiment of the present invention.
Fig. 4 is a kind of microlens array structural schematic diagram of the embodiment of the present invention.
Fig. 5 is second of microlens array structural schematic diagram of the embodiment of the present invention.
Fig. 6 is the schematic diagram that the embodiment of the present invention uses light source to illuminate side by side.
Fig. 7 is the light-source system exploded view of traditional head up display.
Fig. 8 is the light-source system assembled sectional view of traditional head up display.
60 light emitting sources
601 prefocus cups
602 light-emitting diodes
61 light-guiding pillars
62 diffusion sheets
63 panels
10 luminescence units
11 collimation lenses
20 polar biased light birefringent plates
30 microlens arrays
30 ' microlens arrays
31 lens array faces
Half blocks of 31A
31 ' lens array faces
310 lens units
32 lens array faces
Half blocks of 32A
32 ' lens array faces
320 lens units
40 polarisation conversion sheets
41 polarisation transition zones
42 transparent areas
50 liquid crystal displays
L light
Ls light
Lp light.
Specific implementation mode
It is a primary object of the present invention to give up the setting of traditional diffusion sheet, avoid waste of energy, reduce brightness
Disadvantage, using a kind of lighting system of brand-new design, structure is mainly equipped with a polar biased light birefringent plate in front of luminescence unit,
The light of P polar biased light and S polar biased light will be divided by the non-polarization collimated ray of luminescence unit incidence first, and respectively with different
Angle projects；Again through one group of microlens array, make the light of P polar biased light and S polar biased light through optically focused and refraction, with equidirectional and
Symmetric mode projects side by side；Again through a polarisation conversion sheet polar biased optical conversion element, by light holotype at the polar biased light of same nature
Line and then importing liquid crystal display imaging, can obtain excellent and efficient light source.
In order to achieve the above objectives, highly preferred embodiment of the present invention can be reached with following mode：
If a luminescence unit, in front of the strength light directive that can will send out；And it is equipped with collimation lens in the front of luminescence unit；Again
If a polar biased light birefringent plate, for receiving light by luminescence unit and collimation lens incidence, and by the non-polarization of the incidence
Collimated ray is divided into the light of P polar biased light and S polar biased light, and projects at different angles respectively；One group of microlens array is used
In receiving the P polar biased light injected and S polar biased light, it is in the lens array face being oppositely arranged that microlens array, which includes two, relatively
Lens array face in being symmetrically set, and be each formed with multiple continuous and compact arranged lens unit respectively, with
Make optically focused and refraction of the light through lens unit of P polar biased light and S polar biased light, second is symmetrically entered in cross thoroughly
The lens unit in lens array face, and each corresponding lens unit on second lens array face can change the side of each light beam
To so that P polar biased light is projected with S polar biased light with equidirectional and side-by-side configuration；One polarisation conversion sheet, set on going out for microlens array
Light side, polarisation conversion sheet are equipped with coating arranged at equal interval, to constitute the polarisation transition zone of tool phase-delay characteristic and not make
Dynamic transparent area, wherein polarisation transition zone and transparent area are aligned with the lens unit in microlens array respectively, and one group inclined
Light transition zone and transparent area respectively account for the half position of a lens unit area；When light is respectively formed together after polarisation conversion sheet
The polar biased light of one property, is imaged with liquid crystal display；Due to the setting of not no diffusion sheet, liquid crystal display can be promoted through measuring
1.3-2 times of the penetrance (general requirements 5%) of device, obtains stronger effective sunlight.
The invention has the advantages that：
1. due to the present invention and traditional diffusion sheet design is not used, light source is not consumed largely, therefore brightness can improve,
And save the energy.
2. due to of the invention first with the light source group throw light of white, and using polar biased light birefringent plate by the non-of incidence
Polar biased collimated light is divided into P polar biased light and S polar biased light, and is projected respectively by different angles；And by microlens array and
The light splitting of polarisation conversion sheet and correspondence, then liquid crystal display use, can promote the penetrance (one of liquid crystal display through measuring
As specification 5%) 1.3-2 times, obtain stronger effective sunlight.
3. the present invention is placed in using strength white LED light source on optical axis, you can implement, it is more simple real compared with the prior art
With saving cost.
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
A kind of high efficiency head up display lighting system using polar biased photoconverter, as depicted in figs. 1 and 2, including：
One luminescence unit 10, for the luminous white light diode (LED) of strength, the strength light L directives front that can will be sent out；Such as figure
Shown in 1 and Fig. 2, luminescence unit 10 is single light source.As shown in 6 figures, luminescence unit 10 or multiple light-emitting diodes；To make
The light can parallel injection forward, one or more collimation lenses 11, collimation lens 11 can be equipped in the front of luminescence unit 10
Optical element quantity can be increased according to actual needs, efficiency in order to balance is commonly designed and the requirement that do not take up space, using one
Or two be common pattern, but in the present embodiment attached drawing only using one as illustrate.
One polar biased light birefringent plate 20, for receiving by the incident light L of luminescence unit 10 and collimation lens 11, and will
The non-polarization collimated ray L of the incidence is divided into light Lp, the Ls of P polar biased light and S polar biased light, and respectively at different angles
It projects.
One group of microlens array 30 is transparent cake structure, and micro- for receiving the P polar biased light injected and S polar biased light
On the incidence surface being mutually set in parallel and light-emitting surface of lens array, equipped in the lens array face 31,32 being oppositely arranged, it is somebody's turn to do
Several continuous and compact arranged lens unit 310,320 is each formed on lens array face 31,32 respectively；As shown in Fig. 2,
Lens unit 310,320 is the rectangular cells of multiple close appositions；Between two lens array faces 31,32 of the microlens array 30
Equipped with light-transmitting materials, and make light Lp, Ls directly passes through；And the microlens array 30 can be integrally formed by transparent material, made
Make and group close will be more convenient；As depicted in figs. 1 and 2, two lens array faces 31,32 of microlens array 30 are with lens list
It is in state facing each other on the basis of member 310,320, which can assemble light Lp, Ls, project corresponding
On the lens unit 320 in lens array face 32, then change by lens unit 320 direction of each light beam, makes P polar biased light and S polar biased
Light is with equidirectional and symmetric mode projects side by side
As shown in Figs. 1-3, a polarisation conversion sheet 40, set on the light emission side of microlens array 30, polarisation conversion sheet 40 is equipped with etc.
Spaced coating, to constitute the polarisation transition zone 41 of tool phase-delay characteristic and not have the transparent area of phase-delay characteristic
42.Polarisation transition zone 41 and transparent area 42 are aligned with the lens unit 310,320 in microlens array 30, and one group of polarisation turns
Change the half position that area 41 and transparent area 42 are respectively directed at 310,320 area of each lens unit in microlens array 30；And this is partially
The coating tool half-wave phase delay of light transition zone 41（half-wave plate）Characteristic, and the phase delay axis of the coating with partially
It is in 45 degree or 135 degree of angles between the electric field polarization direction of aurora.
As depicted in figs. 1 and 2, the strength light L directives front that the present invention will be sent out by luminescence unit 10, and it is saturating by collimating
Mirror 11 enables the light parallel injection forward, when light L passes through polar biased light birefringent plate 20, by the non-polarization of incidence collimation
Light L is divided into light Lp, the Ls of P polar biased light and S polar biased light, when two kinds of polar biased light Lp, Ls enter microlens array 30
When, the lens unit 310 of first lens array surface 31 is initially entered, light Lp, the Ls warp of the P polar biased light and S polar biased light
The optically focused of lens unit 310 and refraction symmetrically enter the lens unit 320 in second lens array face 32 in cross,
This lens unit 320 can change the direction of each light beam, make P polar biased light with S polar biased light with equidirectional and symmetric mode projects side by side；
Due to the lens unit 320 in polarisation conversion sheet 40 polarisation transition zone 41 and the transparent area 42 of non-start it is corresponding, because
This injects the transparent area 42 of polarisation conversion sheet 40 after the first polar biased light Ls enters lens unit 320, then injects liquid crystal
Show device 50；And after second of polar biased light Lp enters lens unit 320, the polarisation transition zone 41 of polarisation conversion sheet 40 is injected, it will
The polar biased light Lp of script changes into another polar biased light Ls, then injects liquid crystal display 50；The light of all injections can then be made
It is turned into the S polar biased light Ls of same nature, is imaged with liquid crystal display 50.
10 front of luminescence unit is equipped with collimation lens 20, and collimation lens 20 can be that single lens group is (comprising one or multiple
Several optical elements), or the lens array that is made of multiple collimation lenses, one is connected into mutual close apposition extensively
Illuminated area.But this is known and easy to implement for those skilled in the art, is no longer separately repeated with schema；As depicted in figs. 1 and 2,
Microlens array 30 when considering the factor of space or material, can the embodiment as shown in 4 figures be designed, microlens array
30 are substituted by by equivalent by two pieces of half block 31A with a lens unit 310,320, the microlens array that 32A is constituted
30 ', two and half block 31A, 32A are symmetrical lens array two-by-two, and protrusion is each formed with several companies on the outside respectively
Continuous and compact arranged lens unit 310,320；Lens unit 310,320, which aligns, can reach identical effect.
As shown in Fig. 2, the lens unit in the front lens array surface 31 and rear lens array surface 32 of microlens array 30
310,320 be multiple rectangular lens, can collect polarisation transition zone 41 or light transmission that suitable light is incident upon polarisation conversion sheet 40
On the position in area 42；Before luminescence unit 10, collimation lens 11, polar biased light birefringent plate 20, polarisation conversion sheet 40 are all constant
It puts, which can be designed to microlens array 30 ' as shown in Figure 5, the front lens of the microlens array 30 '
Lens unit 310 ', 320 ' in array surface 31 ' and rear lens array surface 32 ' is elongated cylindrical lens, corresponds to polarisation and converts
The polarisation transition zone 41 of piece 40 or the position of transparent area 42, can get a desired effect.
As shown in fig. 6, the light source that light source can be formed dense distribution side by side by the present invention projects, cooperation is one or more
Collimation lens 11 can be such that the thickness of lighting system reduces, to promote the penetrance of liquid crystal display（General requirements 5%）1.3-2
Times, obtain stronger effective sunlight lighting system.
The traditional polar biased photoconverter used in projector system needs plane mirror and reflective polar biased optical splitter to entering
The non-polarization light penetrated carries out polar biased light splitting, it is therefore desirable to and reflection angle is configured and is adjusted, it is cumbersome, it is unfavorable for producing
With.Big so as to cause equipment volume and since there are reflection angles, occupied space resource is unfavorable for using.And it is of the invention
Diffusion sheet is replaced using polar biased light birefringent plate, light can penetrate polar biased light birefringent plate, and it is inclined with S to be divided into P polar biased light
The light of aurora, and project at different angles respectively, and by the effect of one group of microlens array and polarisation conversion sheet, by light
Polar biased light and then importing liquid crystal display imaging of the line holotype at same nature, can reduce the loss of light, can obtain
Excellent and efficient light source, and it is substantially reduced the spatial volume of equipment.The polarisation transition zone of the present invention is converted set on polarisation
The outside of piece, and light transmission processing, processing easy to produce are carried out to entire polarisation conversion sheet.
The above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (9)
1. a kind of high efficiency head up display lighting system using polar biased photoconverter, which is characterized in that including：
An at least luminescence unit, the strength light directive front that can will be sent out；And the front of luminescence unit is equipped with collimation lens；
One polar biased light birefringent plate, for receiving light by luminescence unit and collimation lens incidence, and by the non-polarization of incidence
Collimated ray is divided into the light of P polar biased light and S polar biased light, and two light are projected with different angle respectively；
One group of microlens array, for receiving incident P polar biased light and S polar biased light；The microlens array is transparent cake knot
Structure body, the incidence surface of microlens array and light-emitting surface are in being mutually parallel, and incidence surface and light-emitting surface are equipped with opposite saturating in position
Lens array face；The lens array face is equipped with multiple continuous and compact arranged lens unit, so that P polar biased light and S polar biased light
Optically focused and refraction of the light through first lens unit, symmetrically enter each phase in second lens array face in cross
Corresponding lens unit, and the lens unit in second lens array face changes the direction of light beam, so that P polar biased light and S polar biased
Light is projected with equidirectional and side-by-side configuration；
One polarisation dress changes piece, is set to the light emission side of lens array；The polarisation dress changes piece and is equipped with coating arranged at equal interval, with structure
At with phase-delay characteristic polarisation transition zone and without the transparent area of phase-delay characteristic；The polarisation transition zone and thoroughly
Light area is aligned with the lens unit in microlens array, and one group of polarisation transition zone and transparent area respectively account for a lens unit face
Long-pending half；
Light is respectively formed the polar biased light of same nature after polarisation conversion sheet, is imaged with liquid crystal display.
2. a kind of high efficiency head up display lighting system using polar biased photoconverter according to claim 1, special
Sign is, the lens unit is long cylindroid lens, and with the position phase of the polarisation transition zone of polarisation conversion sheet and transparent area
It is right.
3. a kind of high efficiency head up display lighting system using polar biased photoconverter according to claim 1, special
Sign is that the microlens array is an integral molding structure.
4. a kind of high efficiency head up display lighting system using polar biased photoconverter according to claim 1, special
Sign is that the microlens array is made of two pieces of half blocks with lens unit；Two and half block is symmetrical block
Shape lens, and the lens unit to form multiple continuous and close-packed arrays and be mutually aligned is protruded in the outside of two halves block.
5. a kind of high efficiency head up display lighting system using polar biased photoconverter according to claim 1, special
Sign is that the luminescence unit is single light source, and the collimation lens is only one group.
6. a kind of high efficiency head up display lighting system using polar biased photoconverter according to claim 1, special
Sign is that the collimation lens is the array of a plurality of optical elements composition.
7. a kind of high efficiency head up display lighting system using polar biased photoconverter according to claim 1, special
Sign is, the luminescence unit at least two.
8. a kind of high efficiency head up display lighting system using polar biased photoconverter according to claim 1, special
Sign is that the luminescence unit is light-emitting diode.
9. a kind of high efficiency head up display lighting system using polar biased photoconverter according to claim 1, special
Sign is that the polarisation transition zone in the polarisation conversion sheet has half-wave phase lag characteristic, and the phase of polarisation conversion sheet is prolonged
The electric field polarization direction of slow axis and polar biased light is in 45 degree.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284360.7A CN108594433A (en) | 2018-04-02 | 2018-04-02 | A kind of high efficiency head up display lighting system using polar biased photoconverter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284360.7A CN108594433A (en) | 2018-04-02 | 2018-04-02 | A kind of high efficiency head up display lighting system using polar biased photoconverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7447162B2 (en) | 2021-04-07 | 2024-03-11 | 矢崎総業株式会社 | Vehicle display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5828471A (en) * | 1994-12-29 | 1998-10-27 | Sharp Kabushiki Kaisha | Illumination system and display device |
| CN1503014A (en) * | 2002-11-22 | 2004-06-09 | 鸿富锦精密工业（深圳）有限公司 | Polarization device, polarization light source and LCD device |
| TW201137401A (en) * | 2010-04-05 | 2011-11-01 | Lg Innotek Co Ltd | Polarization conversion apparatus |
| WO2013035855A1 (en) * | 2011-09-09 | 2013-03-14 | 矢崎総業株式会社 | Display device for vehicle |
| JP2016139050A (en) * | 2015-01-28 | 2016-08-04 | デクセリアルズ株式会社 | Polarization conversion element and optical apparatus using the same |
| CN107257940A (en) * | 2014-11-21 | 2017-10-17 | 法雷奥舒适驾驶助手公司 | Optical projection system and the display of correlation for display, particularly head-up display |
| CN107407810A (en) * | 2015-03-13 | 2017-11-28 | 微软技术许可有限责任公司 | Light engine with cylindrical mirror shape microlens array |
-
2018
- 2018-04-02 CN CN201810284360.7A patent/CN108594433A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5828471A (en) * | 1994-12-29 | 1998-10-27 | Sharp Kabushiki Kaisha | Illumination system and display device |
| CN1503014A (en) * | 2002-11-22 | 2004-06-09 | 鸿富锦精密工业（深圳）有限公司 | Polarization device, polarization light source and LCD device |
| TW201137401A (en) * | 2010-04-05 | 2011-11-01 | Lg Innotek Co Ltd | Polarization conversion apparatus |
| WO2013035855A1 (en) * | 2011-09-09 | 2013-03-14 | 矢崎総業株式会社 | Display device for vehicle |
| CN107257940A (en) * | 2014-11-21 | 2017-10-17 | 法雷奥舒适驾驶助手公司 | Optical projection system and the display of correlation for display, particularly head-up display |
| JP2016139050A (en) * | 2015-01-28 | 2016-08-04 | デクセリアルズ株式会社 | Polarization conversion element and optical apparatus using the same |
| CN107407810A (en) * | 2015-03-13 | 2017-11-28 | 微软技术许可有限责任公司 | Light engine with cylindrical mirror shape microlens array |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7447162B2 (en) | 2021-04-07 | 2024-03-11 | 矢崎総業株式会社 | Vehicle display device |
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Application publication date: 20180928 |