CN105892057B - A kind of colored diffraction head-up display of holography based on polymer multilayer film - Google Patents
A kind of colored diffraction head-up display of holography based on polymer multilayer film Download PDFInfo
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- CN105892057B CN105892057B CN201610321320.6A CN201610321320A CN105892057B CN 105892057 B CN105892057 B CN 105892057B CN 201610321320 A CN201610321320 A CN 201610321320A CN 105892057 B CN105892057 B CN 105892057B
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- multilayer film
- light source
- led light
- recording medium
- display
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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
- G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
-
- 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
- G02B2027/0141—Head-up displays characterised by optical features characterised by the informative content of the display
-
- 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
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/015—Head-up displays characterised by mechanical features involving arrangement aiming to get less bulky devices
-
- 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
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
- G02B2027/0174—Head mounted characterised by optical features holographic
Abstract
A kind of colored diffraction head-up display of holography based on polymer multilayer film.It, which includes diffraction screen, internal record, multilayer film recording medium, liquid crystal light modulator, the first Amici prism, the first attenuator, the first extender lens group, the first LED light source, the second Amici prism, the second attenuator, the second extender lens group, the second LED light source and the LED drive power of reflective holographic body grating；Holographic colored diffraction head-up display provided by the invention can interfere the coherent light of different wave length, and reflective holographic body grating is recorded in inside multilayer film photopolymer, pass through liquid crystal light modulator load image simultaneously, it adjusts different wave length and reads luminous intensity, need to image information to be shown be diffracted on screen by reflective gratings, the light of different colours reads grating simultaneously, so as to clearly show colorful image.
Description
Technical field
The invention belongs to holography fields, spread out more particularly to a kind of holographic colour based on polymer multilayer film
Penetrate head-up display.
Background technology
With development in science and technology, the head-up display for being used primarily for military field fighter plane is just gradually extended to civil field.
Head-up display can make pilot need not bow viewing instrument, can both observe external rings through the windshield glass of aircraft
Border, while in presentation of information to glass, will directly can be very beneficial to pilot and carry out relevant operation.Civil field can incite somebody to action
Head-up display is placed on the windshield glass of automobile, and driver just can intuitively see while observing pavement behavior
The other informations such as the travel speed of automobile are examined, vehicle is quickly operated convenient for driver.Therefore head-up display has widely
Application potential and development prospect.
The head-up display device based on Principle of Grating Diffraction is at most paid attention in head-up display.Due to relying on merely
The reflection of glass surface film realizes that presentation of information can have the significant drawbacks such as reflectivity is small, contrast is low, so that display effect
Fruit is very poor.If in glass surface by etching or sticking one layer of phase type diffraction grating, according to Principle of Grating Diffraction, in visual field
In just can with higher brightness show information, this is most important for head-up display, this kind of mode is used extensively at present
In all types of head-up display devices.But it was found that current most of head-up display while showing information
It is solid color, this is because the diffraction grating fringe spacing of etching is fixed, is limited to the constant spacing grating manually etched,
Therefore it is difficult to develop the reflective gratings simultaneously to multi-wavelength with stronger diffracting power.In addition it is to increase transmitance, it cannot
Change and the grating fringe for increasing different spacing by multiplex mode.To enable information to clearly show, people's more options are to people
The more sensitive green-yellow light of eye is as diffraction light, therefore the head-up display that we are seen is mostly single green.However for
For observing the display information of display for a long time and observing the operating personnel of scenery external through diffraction HUD, dull display color
Coloured silk is very easy to cause visual fatigue, so that driver reduces the keen of display information.
Invention content
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of, and the holographic colour based on polymer multilayer film spreads out
Penetrate head-up display.
In order to achieve the above object, the colored diffraction head-up display dress of the holography provided by the invention based on polymer multilayer film
Set including：Diffraction screen, internal record have the multilayer film recording medium of reflective holographic body grating, liquid crystal light modulator, first
Amici prism, the first attenuator, the first extender lens group, the first LED light source, the second Amici prism, the second attenuator, second are expanded
Beam lens group, the second LED light source and LED drive power；Wherein the first LED light source, the first extender lens group, the first attenuator and
The standoff distance setting from right to left of first Amici prism is in a row, and the emission port of the first LED light source is expanded in face of first
Microscope group；Second LED light source, the second extender lens group, the second attenuator and the second Amici prism are arranged from the right side from left standoff distance
In a row, the emission port of the second LED light source faces the second extender lens group, and the second Amici prism is located at the first Amici prism
Front；Liquid crystal light modulator is transversely arranged on rear side of the first Amici prism；Multilayer film recording medium is arranged in liquid crystal light-modulating
On rear side of device processed, and it is in 45 degree of angles with liquid crystal light modulator；The setting of diffraction screen is spread out can receive multilayer film recording medium
Penetrate the multilayer film recording medium side of light；First LED light source and the second LED light source are electrically connected with LED drive power simultaneously.
The centre wavelength of first LED light source and the second LED light source is respectively 532nm and 633nm.
The multilayer film recording medium is gathered by acrylamide polymer upper layer storage medium and polymethyl methacrylate
Close object underlying storage medium composition；The wherein following component composition of acrylamide polymer upper layer storage medium in parts by weight：
Poly methyl methacrylate polymer underlying storage medium is made of following component by weight：
The SiO2The average diameter of particle is 15nm.
The preparation method of the multilayer film recording medium is：First by according to above-mentioned weight weighing as photosensitizer
Phenanthrenequione, the azodiisobutyronitrile as thermal initiator and the methyl methacrylate as thermotropic polymerization monomer are blended, and then exist
So that it is uniformly mixed by supersonic oscillations at 50 DEG C and fully dissolve each other, places 30 minutes later to generate precipitation, then filter,
By SiO2Nano-particle is added in filtered clarified solution and mixed liquor is made, and above-mentioned mixed liquor is warming up to 55 DEG C, and hold
Continuous sonic oscillation 5 minutes, then stops oscillation, moves to later in collar plate shape glass mold, be warming up to 65 DEG C, maintain the temperature simultaneously
Cure 48 hours in drying box and underlying storage medium blank is made, finally above-mentioned blank is existed using aluminum oxide polishing powder
Surface polishing is carried out using polishing machine under the rotating speed of 300-500r/min, underlying storage medium is thus made；
It will be according to the methylene blue dye as photosensitizer, the acrylamide as monomer, conduct of above-mentioned weight weighing
The triethanolamine of chain-transferring agent and NN methylene-bisacrylamides as crosslinking agent are blended by deionized water；Substrate will be used as
The polyvinyl alcohol of material weighs, and it is molten as the clarification of 10% mass volume ratio to be added to preparation in the deionized water in addition prepared
The clear solution is then mixed with blends described above, persistently stirs 30 minutes under magnetic stirring apparatus and be made by liquid
Blended liquid stands 10 minutes and excludes bubble, then above-mentioned blended liquid is uniformly applied to the lower layer's storage for having carried out surface polishing
Dielectric surface is placed 36-48 hours, and the multilayer film with wideband sensitive capability is made after solvent natural drying and records Jie
Matter.
The colored diffraction head-up display of holography provided by the invention based on polymer multilayer film is inhaled for wide
It receives the photopolymer material characteristics of range and designs, the coherent light of different wave length can be interfered, and will be reflective complete
Breath body grating is recorded in inside multilayer film photopolymer, while by liquid crystal light modulator load image, adjusting different wave length
Read luminous intensity, it would be desirable to which the image information of display is diffracted by reflective gratings on screen, and the light of different colours is read simultaneously
Grating is taken, so as to clearly show colorful image.In addition, the property based on multilayer film recording medium, utilizes this
The high-transmission rate and high-diffraction efficiency of medium load on display information inside visual field while observing external through medium, can
Realize the holographic colored diffraction HUD of high-definition.
Description of the drawings
Fig. 1 is the colored diffraction head-up display schematic diagram of the holography based on polymer multilayer film provided by the invention.
Fig. 2 is poly methyl methacrylate polymer underlying storage medium in multilayer film recording medium provided by the invention
Absorption spectra.
Fig. 3 is the absorption spectra of multilayer film recording medium provided by the invention.
Fig. 4 is the reflective holographic body grating green light difraction spectrum of multilayer film recording medium provided by the invention.
Fig. 5 is the reflective holographic body grating feux rouges difraction spectrum of multilayer film recording medium provided by the invention.
Specific implementation mode
The colored diffraction of holography in the following with reference to the drawings and specific embodiments to provided by the invention based on polymer multilayer film
Head-up display is described in detail.
As shown in Figure 1, the colored diffraction head-up display of the holography provided by the invention based on polymer multilayer film includes：
Diffraction screen 1, internal record have the multilayer film recording medium 2 of reflective holographic body grating, liquid crystal light modulator 3, first to be divided
Prism 4, the first attenuator 5, the first extender lens group 6, the first LED light source 7, the second Amici prism 8, the second attenuator 9, second
Extender lens group 10, the second LED light source 11 and LED drive power 12；Wherein the first LED light source 7, the first extender lens group 6,
One attenuator 5 and the standoff distance setting from right to left of the first Amici prism 4 are in a row, and the emission port face of the first LED light source 7
To the first extender lens group 6；Second LED light source 11, the second extender lens group 10, the second attenuator 9 and the second Amici prism 8 from
The right side is in a row from the setting of left standoff distance, and the emission port of the second LED light source 11 faces the second extender lens group 10, and second point
Light prism 8 is located at 4 front of the first Amici prism；Liquid crystal light modulator 3 is transversely arranged in 4 rear side of the first Amici prism；It is more
The setting of tunic recording medium 2 is in 45 degree of angles in 3 rear side of liquid crystal light modulator, and with liquid crystal light modulator 3；Diffraction screen 1
It is arranged in 2 side of multilayer film recording medium that can receive 2 diffracted ray of multilayer film recording medium；First LED light source 7 and second
LED light source 11 is electrically connected with LED drive power 12 simultaneously.
The centre wavelength of first LED light source 7 and the second LED light source 11 is respectively 532nm and 633nm, and can be with
Change LED light source into laser light source as needed.
Now holographic colored diffraction head-up display operation principle provided by the invention is described below：By the first LED light
The centre wavelength that source 7 is sent out first passes through the first extender lens group 6 for the light of 532nm and is expanded, then will by the first attenuator 5
Light intensity decays, and then enters the first Amici prism 4；The light for being 633nm by the centre wavelength that the second LED light source 11 is sent out is first
It is expanded by the second extender lens group 10, then light intensity is decayed by the second attenuator 9, then enter the second light splitting
Prism 8, after through the light beam of the second Amici prism 8 reflection through the light with the transmitting of the first LED light source 7 after the first Amici prism 4
Overlapping, and it is incident on 3 surface of liquid crystal light modulator together, after 3 load image of liquid crystal light modulator, with reflective gratings
Bragg matchings angle is incident on multilayer film recording medium 2, through the reflective holographic body grating diffraction in multilayer film recording medium 2,
The image for carrying information is projected directly on diffraction screen 1 and is shown, or by naked eyes direct viewing, just can be obtained
Clearly, the diffraction image of high brightness.
Embodiment 1：
2 recording medium of multilayer film recording medium provided in this embodiment is by acrylamide polymer upper layer storage medium and gathers
Methylmethacrylate polymer underlying storage medium forms；Wherein acrylamide polymer upper layer storage medium is by weight
Following component forms：
Underlying storage medium is made of following component by weight：
Preparation method：The preparation method of the multilayer film recording medium 2 is：It first will be according to the work of above-mentioned weight weighing
Phenanthrenequione for photosensitizer, the azodiisobutyronitrile as thermal initiator and the methyl methacrylate as thermotropic polymerization monomer are total
It is mixed, then so that it is uniformly mixed by supersonic oscillations at 50 DEG C and fully dissolve each other, places 30 minutes and precipitated with generating later,
Then it filters, by the SiO that average diameter is 15nm2Nano-particle is added in filtered clarified solution and mixed liquor is made, will
Above-mentioned mixed liquor is warming up to 55 DEG C, and continual ultrasonic vibrates 5 minutes, then stops oscillation, moves to collar plate shape glass mold later
It is interior, 65 DEG C are warming up to, the temperature is maintained and cures 48 hours in drying box and underlying storage medium blank is made, it finally will be upper
It states blank and carries out surface polishing using polishing machine under the rotating speed of 300r/min using aluminum oxide polishing powder, lower layer is thus made and deposits
Storage media, thickness range are 500 microns to 3 millimeters；
It will be according to the methylene blue dye as photosensitizer, the acrylamide as monomer, conduct of above-mentioned weight weighing
The triethanolamine of chain-transferring agent and NN methylene-bisacrylamides as crosslinking agent are blended by deionized water；Substrate will be used as
The polyvinyl alcohol of material weighs, and it is molten as the clarification of 10% mass volume ratio to be added to preparation in the deionized water in addition prepared
The clear solution is then mixed with blends described above, persistently stirs 30 minutes under magnetic stirring apparatus and be made by liquid
Blended liquid stands 10 minutes and excludes bubble, then above-mentioned blended liquid is uniformly applied to the lower layer's storage for having carried out surface polishing
Dielectric surface is placed 36-48 hours, and the multilayer film recording medium with wideband sensitive capability is made after solvent natural drying
2。
Embodiment 2：
Multilayer film recording medium 2 provided in this embodiment is by acrylamide polymer upper layer storage medium and polymethyl
Sour methacrylate polymer underlying storage medium composition；The wherein following component of acrylamide polymer upper layer storage medium by weight
Composition：
Underlying storage medium is made of following component by weight：
The preparation method is the same as that of Example 1.
Embodiment 3：
Multilayer film recording medium 2 provided in this embodiment is by acrylamide polymer upper layer storage medium and polymethyl
Sour methacrylate polymer underlying storage medium composition；The wherein following component of acrylamide polymer upper layer storage medium by weight
Composition：
Underlying storage medium is made of following component by weight：
The preparation method is the same as that of Example 1.
Fig. 2 is poly methyl methacrylate polymer underlying storage medium in multilayer film recording medium 2 provided by the invention
Absorption spectra, as can be seen from the figure the underlying storage medium to wavelength less than 600nm laser have higher photosensitive absorption
Ability.The material is suitable for recording grating under 532nm laser.Fig. 3 is the absorption of multilayer film recording medium 2 provided by the invention
Spectrum.Compared with the absorption spectra of above-mentioned underlying storage medium, it can be clearly seen that two peaks occurs in the absorption of multilayer film recording medium 2
Value, one identical as underlying storage medium, another is within the scope of 600nm-700nm.This is because acrylamide polymer
Upper layer storage medium is a kind of polymer material to red light sensitiveness, therefore multilayer film recording medium 2 can be suitable for two kinds not
The laser of co-wavelength records holographic body grating respectively.
Reflective gratings diffraction spectra can characterize the diffracting power of holographic body grating.Fig. 4 is multilayer film provided by the invention
The reflective holographic body grating green light difraction spectrum of recording medium.The difraction spectrum is in the green quick material by underlying storage medium
The optical grating diffraction of portion's record measures.This it appears that the diffraction peak of the spectrum is in green range.By suitably adjusting
Optical grating diffraction angle can make diffraction wavelength just match the first LED light source 7 that centre wavelength is 532nm.While the spectrum
Peak half width is relatively narrow, is very suitable for carrying out diffraction to single wavelength.The stray light of other wavelength can be filtered out well.
Fig. 5 is the reflective holographic body grating feux rouges difraction spectrum of multilayer film recording medium provided by the invention.The diffraction
Spectrum is from the optical grating diffraction measurement of the red quick material internal record of upper layer storage medium.This it appears that its diffraction maximum
Value position is directly directed at 633nm, while also having relatively narrow peak half width, therefore being capable of diffraction He-Ne laser waves well
It is long.The difraction spectrum of the upper layer storage medium shows to be suitable for carrying out diffraction to feux rouges.
Claims (5)
1. a kind of colored diffraction head-up display of holography based on polymer multilayer film, it is characterised in that：It includes：Diffraction screen
Curtain (1), internal record have the multilayer film recording medium (2) of reflective holographic body grating, liquid crystal light modulator (3), the first light splitting
Prism (4), the first attenuator (5), the first extender lens group (6), the first LED light source (7), the second Amici prism (8), second decline
Subtract piece (9), the second extender lens group (10), the second LED light source (11) and LED drive power (12)；Wherein the first LED light source
(7), standoff distance is arranged to one from right to left for the first extender lens group (6), the first attenuator (5) and the first Amici prism (4)
Row, and the emission port of the first LED light source (7) faces the first extender lens group (6)；Second LED light source (11), second expand
In a row, the second LED light source is arranged from the right side from left standoff distance in microscope group (10), the second attenuator (9) and the second Amici prism (8)
(11) before emission port faces the second extender lens group (10), and the second Amici prism (8) is located at the first Amici prism (4) just
Side；Liquid crystal light modulator (3) is transversely arranged on rear side of the first Amici prism (4)；Multilayer film recording medium (2) is arranged in liquid crystal
On rear side of optical modulator (3), and it is in 45 degree of angles with liquid crystal light modulator (3)；Diffraction screen (1) setting can receive multilayer
Multilayer film recording medium (2) side of film recording medium (2) diffracted ray；First LED light source (7) and the second LED light source (11)
It is electrically connected simultaneously with LED drive power (12).
2. the colored diffraction head-up display of the holography according to claim 1 based on polymer multilayer film, feature exist
In：The centre wavelength of first LED light source (7) and the second LED light source (11) is respectively 532nm and 633nm.
3. the colored diffraction head-up display of the holography according to claim 1 based on polymer multilayer film, feature exist
In：The multilayer film recording medium (2) is polymerize by acrylamide polymer upper layer storage medium and polymethyl methacrylate
Object underlying storage medium forms；The wherein following component composition of acrylamide polymer upper layer storage medium in parts by weight：
Poly methyl methacrylate polymer underlying storage medium is made of following component by weight：
4. the colored diffraction head-up display of the holography according to claim 3 based on polymer multilayer film, feature exist
In：The SiO2The average diameter of nano-particle is 15nm.
5. the colored diffraction head-up display of the holography according to claim 3 based on polymer multilayer film, feature exist
In：The preparation method of the multilayer film recording medium (2) is：It first will be according to the phenanthrene as photosensitizer of above-mentioned weight weighing
Quinone, the azodiisobutyronitrile as thermal initiator and the methyl methacrylate as thermotropic polymerization monomer are blended, then 50
So that it is uniformly mixed by supersonic oscillations at DEG C and fully dissolve each other, places 30 minutes later to generate precipitation, then filter, it will
SiO2Nano-particle is added in filtered clarified solution and mixed liquor is made, and above-mentioned mixed liquor is warming up to 55 DEG C, and continue
Sonic oscillation 5 minutes, then stops oscillation, and moves to later in collar plate shape glass mold, is warming up to 65 DEG C, maintain the temperature and
Cure 48 hours in drying box and underlying storage medium blank is made, finally utilizes aluminum oxide polishing powder in 300- above-mentioned blank
Surface polishing is carried out using polishing machine under the rotating speed of 500r/min, underlying storage medium is thus made, thickness range is 500 microns
To 3 millimeters；
It will turn according to the methylene blue dye as photosensitizer of above-mentioned weight weighing, the acrylamide as monomer, as chain
It moves the triethanolamine of agent and the NN methylene-bisacrylamides as crosslinking agent is blended by deionized water；Base material will be used as
Polyvinyl alcohol weigh, and be added in the deionized water in addition prepared prepare as 10% mass volume ratio clear solution,
The clear solution is mixed with blends described above then, 30 minutes is persistently stirred under magnetic stirring apparatus and blending is made
Liquid stands 10 minutes and excludes bubble, then above-mentioned blended liquid is uniformly applied to the underlying storage medium for having carried out surface polishing
Surface is placed 36-48 hours, and the multilayer film recording medium (2) with wideband sensitive capability is made after solvent natural drying.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610321320.6A CN105892057B (en) | 2016-05-16 | 2016-05-16 | A kind of colored diffraction head-up display of holography based on polymer multilayer film |
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| CN201610321320.6A CN105892057B (en) | 2016-05-16 | 2016-05-16 | A kind of colored diffraction head-up display of holography based on polymer multilayer film |
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| CN107229088B (en) | 2017-08-07 | 2020-11-03 | 京东方科技集团股份有限公司 | Optical microstructure, manufacturing method of optical microstructure layer, light guide assembly and display device |
| KR20200077842A (en) * | 2018-12-21 | 2020-07-01 | 엘지디스플레이 주식회사 | Display device realzing a virtue image |
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|---|---|---|---|---|
| CN2539054Y (en) * | 2002-04-27 | 2003-03-05 | 孙大璋 | Reflecting holographic colour lighting implement |
| CN1424829A (en) * | 2002-12-13 | 2003-06-18 | 北京工业大学 | Stage linked body holographic grating intensive WDM implement manufacture and system thereof |
| WO2004013677A1 (en) * | 2002-08-05 | 2004-02-12 | Nikon Corporation | Image combiner and image display unit |
| CN102246084A (en) * | 2008-12-09 | 2011-11-16 | 德尔菲技术公司 | Diffractive head-up display device provided with a device for adjusting the position of the virtual image |
| CN104581121A (en) * | 2015-01-27 | 2015-04-29 | 李雨顺 | Laser holographic all-digital color television system and laser holographic reflected wave zone plate wave pattern acquisition and reproduction method |
-
2016
- 2016-05-16 CN CN201610321320.6A patent/CN105892057B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2539054Y (en) * | 2002-04-27 | 2003-03-05 | 孙大璋 | Reflecting holographic colour lighting implement |
| WO2004013677A1 (en) * | 2002-08-05 | 2004-02-12 | Nikon Corporation | Image combiner and image display unit |
| CN1424829A (en) * | 2002-12-13 | 2003-06-18 | 北京工业大学 | Stage linked body holographic grating intensive WDM implement manufacture and system thereof |
| CN102246084A (en) * | 2008-12-09 | 2011-11-16 | 德尔菲技术公司 | Diffractive head-up display device provided with a device for adjusting the position of the virtual image |
| CN104581121A (en) * | 2015-01-27 | 2015-04-29 | 李雨顺 | Laser holographic all-digital color television system and laser holographic reflected wave zone plate wave pattern acquisition and reproduction method |
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