CN104267498B - Head up display system - Google Patents
Head up display system Download PDFInfo
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- CN104267498B CN104267498B CN201410540045.8A CN201410540045A CN104267498B CN 104267498 B CN104267498 B CN 104267498B CN 201410540045 A CN201410540045 A CN 201410540045A CN 104267498 B CN104267498 B CN 104267498B
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Classifications
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B27/0101—Head-up displays characterised by optical features
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- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
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- G02B2027/0194—Supplementary details with combiner of laminated type, for optical or mechanical aspects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Instrument Panels (AREA)
Abstract
The invention relates to the technical field of head up display, in particular to a head up display system on an automobile. The head up display system comprises a projection light source, laminated glass and a transparent nanometer film, wherein the transparent nanometer film comprises at least one laminated structure of high reflective index layers/low reflective index layers which sediment sequentially outwards from the surface of an inner glass board; the projection light source is used for generating P polarized light, the P polarized light enters the transparent nanometer film, the reflectivity of the P polarized light from the transparent nanometer film is not lower than 5%, and the incident angle of the P polarized light ranges from 42 degrees to 72 degrees. Only a reflection image of the transparent nanometer film can be observed when a reflection image on the laminated glass is observed visually, a reflection image of an uncoated surface can be neglected, and therefore the ghosting problem of the reflection image of the head up display system is avoided; by means of the head up display system, application and popularization of an HUD technology are facilitated, the safe driving environment is provided, the overall structure and process are simple, the cost is low, and the head up display system is safe, durable, attractive and elegant.
Description
Technical field：
The present invention relates to new line display technology field, the head-up-display system on more particularly to a kind of automobile.
Background technology：
With scientific and technical development, display (HUD, the Head Up Display) system that comes back is by more and more in vapour
Use on car.Head-up-display system on automobile can be by important running information, such as speed, engine revolution, oil consumption, tire
Pressure, navigation and external smart machine information be shown in real time in the visual field of driver on front windshield so that
Driver need not bow it is possible to see running information, thus avoiding disperseing the notice to road ahead；Simultaneously so that driving
Member need not adjust eyes observing between the road in a distant place and instrument nearby, can avoid the fatigue of eyes, can be greatly
Strengthen traffic safety and improve driving experience.
Luminescence imaging and projection imaging two ways, wherein projection imaging are mainly passed through in the realization of new line Display Technique at present
Optical element using shield glass itself or extra setting carries out Projection Display, and adopts front windshield anti-
Penetrating projected image is the simplest mode of structure.General front windshield is laminated glass, and it is that had by least two panels
In the middle of the glass substrate of certain curvature, sandwiched thermoplastic polymer film piece (if polyvinyl butyral resin is PVB) is constituted, and comes back aobvious
Show that the light that the projection light source of system sends can reflect when laminated glass is with two surfaces of air contact, two surfaces
On reflected image can produce skew thus forming two ghost images interfering, particularly thicker in the thickness of laminated glass
Can become apparent from the case of (generally more than 3mm), this greatly limits the definition of projection-display image.
For solving the ghost problems of head-up-display system on shield glass, in prior art, there are some sides
Case.For example patent CN101038349 (A), US2002172804 (A1) and US2007148472 (A1) disclose one kind therein
Solution be using wedge shape polymer membrane as laminated glass intermediate layer so that the upper and lower thickness of laminated glass be in wedge
Deformation, so that the reflected image on two surfaces seeing of driver essentially coincides, finally significantly eliminates ghost image and asks
Topic.Similarly locally adopt the glass substrate of wedge thickness with technique scheme, it is public in patent US6414796 (B1)
Open.But these technical schemes have the disadvantage that：1st, fail thoroughly to eliminate ghost image, be not suitable for high-definition image and show；2nd, need to adopt
With the pvb film of special requirement, its price is 7～10 times of common pvb film, and technology difficulty high so that material and technique
Cost is very high；3rd, the optical design to vehicle is sensitive, and the front windshield that need to be directed to concrete vehicle is redesigned.
A solution is also had to be the optics that can change direction of polarized light on the surface of laminated glass or middle setting
Functional layer or the reflective polarizer being capable of reflected P polarized light or S-polarization light, and send with reference to the projection light source of head-up-display system
P polarization light or S-polarization light incident with special angle (as Brewster's angle), thus using laminated glass to different polarization light
Reflection characteristic, to eliminate as much as the reflected image on certain surface, finally eliminates ghost image.This technical scheme is in EP0836108
(A2)、EP0844507(A1)、US6327089(B1)、CN1969219(A)、US7355796(B2)、CN101151568(A)、
All there is disclosure in the patents such as US7839574 (B2), CN1732404 (A) and CN102256910 (A), but this technical scheme is real
Existing premise is must to set up extra optical functional layer or reflection in the local (come back display view field) of laminated glass
Polariscope, this just necessarily improves material cost and technology difficulty, such as the multiple layer polymer P disclosing in CN1732404 (A) is inclined
The speculum number of plies of shaking is up to tens of to hundreds of layers；The overall homogeneity of front windshield is also destroyed simultaneously, reduces aesthetics；
Additionally, the adhesion strength locally arranging the region of optical functional layer or reflective polarizer on laminated glass may reduce thus causing
Potential safety hazard；And, the visible light transmissivity of partial optical functional layer or reflective polarizer is low, thus the visual field to driver
Or the outward appearance of front windshield produces impact.
In addition, there is also in prior art reducing wherein one by antireflective (AR) film is set up on laminated glass surface
The brightness of the reflected image being formed on individual interface, such as disclose in patent US7864431 (B2) and for antireflective coating to be arranged on folder
Set up the skill of Low emissivity (Low-E) plated film on the surface of layer glass and air contact or on the surface be not provided with antireflective coating
Art scheme.But this technical scheme suffers from the drawback that：1st, antireflective coating is deposited on the surface of laminated glass and air contact
On, when being especially deposited on the surface towards outside car for the laminated glass, it is difficult to bear severe use environment, such as acid rain,
Dust, the friction of wiper or alkaline cleaner etc.；2nd, antireflective coating is difficult to be completely eliminated ghost image, particularly observes from high angle
Shi Yiran exists light blue or lilac reflective；3rd, the antireflective coating being deposited on the surface towards outside car for the laminated glass runs into
Water membrane can be covered, now anti-reflective effect can significantly reduce, and ultimately results in ghost phenomena serious during rainy day；4th, antireflective
Film is arranged on laminated glass and the surface of air contact it is impossible to eliminate the reflection producing on the low-emission coated interface set up
, still there is a certain degree of ghost phenomena in image.
Similarly, can also be subtracted by way of the reflected light being formed is strengthened on laminated glass with the surface of air contact
Few macroscopic ghost phenomena, such as adhesive film type HUD projector common on component market, it is pre- in HUD view field
First paste semi-transparent reflective film.Obviously, the entirety that this technical scheme one side destroys shield glass is homogeneous
Property or outward appearance permeability, on the other hand be not inherently eliminated ghost phenomena yet.
In automobile head-up-display system, in addition to above-mentioned ghost problems must be resolved, also need to make show image
Can have multicolor displaying ability as far as possible, to meet the display of multiple difference frames.Such as Chinese patent
CN2694293 (Y) pass through be coated with base material plural layer different refractivity film layer realize HUD have red, green,
The narrow wavelength reflection bands of blue three primary colours.In practice, if full-color display requirement can not meet, need to ensure that human eye is most sensitive as far as possible
Green reflection.
Content of the invention：
The technical problem to be solved is the shortcoming existing for above-mentioned prior art, provides a kind of energy
Enough clear no ghost image, multicolor displaying, structural manufacturing process head-up-display systems simple and with low cost.
The present invention solves its technical problem and is adopted the technical scheme that：A kind of head-up-display system, including projection light source
And laminated glass, described laminated glass includes interior glass plate, outer glass plate and is clipped between interior glass plate and outer glass plate
Middle diaphragm it is characterised in that：Also include transparent nano film, described transparent nano film is deposited on interior glass plate farthest away from intermediate coat
On the surface of piece, described transparent nano film include at least one high refractive index layer being outwards sequentially depositing from interior glass pane surface/
The laminated construction of low-index layer, the refractive index of described high refractive index layer is not less than 1.8, and the refractive index of described low-index layer is not
Higher than 1.6, the refringence of described interior glass plate and outer glass plate and described middle diaphragm is not more than 0.1；Described projection light source
For producing P polarization light, P polarization light incides on described transparent nano film, and described transparent nano film is anti-to described P polarization light
The rate of penetrating is not less than 5%, and the incident angle of described P polarization light is 42～72 degree.
Further, described high refractive index layer is selected from Zn, Sn, Ti, Nb, Zr, Ni, In, Al, Ce, W, Mo, Sb, Bi element
Oxide and its mixture, or the nitride of Si, Al, Zr, Y, Ce, La element, nitrogen oxides and its mixture at least
A kind of.
Further, described low-index layer is selected from SiO2、Al2O3And its at least one in mixture.
Further, the incident angle of described P polarization light is 55～70 degree.
Further, the refringence of described interior glass plate and outer glass plate and described middle diaphragm is not more than 0.05.
Further, described transparent nano film is higher than 10% to the reflectivity of described P polarization light.
Further, described transparent nano film includes the laminated construction of a high index layer/low index layer, wherein high
The geometric thickness of index layer is 50～100nm, and the geometric thickness of low-index layer is 80～120nm.
Further, described transparent nano film includes the laminated construction of two high index layer/low index layer, that is, from interior
Glass pane surface is outwards sequentially depositing the first high refractive index layer, the first low-index layer, the second high refractive index layer and the second low folding
Penetrate rate layer, the geometric thickness of the first high refractive index layer is 5～35nm, the geometric thickness of the first low-index layer is 5～35nm, the
The geometric thickness of two high refractive index layers is 20～50nm, and the geometric thickness of the second low-index layer is 80～130nm.
Further, in the laminated construction of described high index layer/low index layer, high refractive index layer or low-refraction
Layer also includes multiple sublayers.
Further, in high refractive index layer, the refractive index near the sublayer of interior glass is less than the sublayer away from interior glass
Refractive index.
Due to taking technique scheme, it has the advantages that the present invention：
Head-up-display system of the present invention, is incident on reflectivity on glass and Air Interface using P polarization light relatively low
The characteristic higher to the reflectivity of P polarization light with transparent nano film is so that only visually observe during the catoptric imaging on laminated glass
Only observe the reflection image of transparent nano film, the reflection image of non-coated surface can be ignored, and thereby eliminates head-up-display system
Reflected image ghost problems；Meanwhile, the present invention is conducive to compared to the optical element of wedge shape pvb film or additional
The popularization and application of HUD technology, thus providing safe environment, overall structure of the present invention and process is simple, with low cost, and
And it is safe, durable and elegant in appearance.
Brief description：
Fig. 1 is the partial sectional view of head-up-display system of the present invention；
Fig. 2A is the laminated construction that transparent nano film of the present invention includes a high index layer/low index layer
Schematic diagram；
Fig. 2 B is the laminated construction that transparent nano film of the present invention includes two high index layer/low index layer
Schematic diagram；
Fig. 3 is the schematic diagram that high refractive index layer in transparent nano film of the present invention includes two sublayers；
Fig. 4 is the reflectance spectrum of P polarization light incidence transparent nano film of the present invention and non-plated membrane interface；
Fig. 5 A, 5B are P polarization light of the present invention respectively with new line display image when 57 degree, 66 degree of incidence；
Fig. 5 C is the display image of the head-up-display system of common laminated glass.
Specific embodiment：
Below in conjunction with accompanying drawing, present disclosure is described further.
As shown in figure 1, head-up-display system of the present invention includes projection light source 1 and laminated glass 2, described interlayer glass
Glass 2 includes interior glass plate 21, outer glass plate 23 and is clipped in middle diaphragm 22 between interior glass plate 21 and outer glass plate 23, is
Elimination ghost phenomena, described head-up-display system also includes transparent nano film 3, and described transparent nano film 3 is deposited on interior glass
Plate 21 is on first surface 211 farthest away from the surface 211 of middle diaphragm 22；Described projection light source 1 is used for producing P polarization light 11, P
Polarised light 11 incides on described transparent nano film 3, and described transparent nano film 3 is not less than to the reflectivity of described P polarization light 11
5%, the incident angle of described P polarization light 11 is 42～72 degree.The present invention utilizes P polarization light incident with 42～72 degree of angle
When, on glass and Air Interface, reflectivity is relatively low and the transparent nano film characteristic higher to the reflectivity of P polarization light is so that mesh
Depending on only observing the reflection image of transparent nano film when observing the catoptric imaging on laminated glass, thus it is existing to eliminate visual ghost image
As；Meanwhile, described transparent nano film 3 is deposited directly on the inner surface 211 of interior glass plate 21, so can change former
Some laminated safety glass structures, make overall structure and process is simple, with low cost；And in order to eliminate inside laminated glass 2
Impact to incident P polarization light 11, the refraction of preferably described interior glass plate 21 and outer glass plate 22 and described middle diaphragm 23
Rate difference is not more than 0.1.
Wherein, described transparent nano film 3 includes the high folding that at least one is outwards sequentially depositing from interior glass plate 21 surface 211
Penetrate the laminated construction of rate layer/low-index layer, the refractive index of described high refractive index layer is not less than 1.8, preferably higher than 2.0, more
Be preferably higher than 2.2, further, described high refractive index layer be selected from Zn, Sn, Ti, Nb, Zr, Ni, In, Al, Ce, W, Mo, Sb,
In the oxide of Bi element and its mixture, or the nitride of Si, Al, Zr, Y, Ce, La element, nitrogen oxides and its mixture
At least one, can be specifically TiOx, NbOx, HfO2、TaOx、MoOx、ZrOx、CeO2、WO3, BiOx or SiZrNx etc.；
The refractive index of described low-index layer is not higher than 1.6, is preferably lower than 1.5, and further, described low-index layer is selected from
SiO2、Al2O3And its at least one in mixture, can be specifically SiAlOx, wherein Si/Al atomic ratio is higher than 10.?
In Fig. 2A, described transparent nano film 3 includes the laminated construction of a high index layer/low index layer, high refractive index layer 31
Geometric thickness is preferably 50～100nm, and the geometric thickness of low-index layer 32 is preferably 80～120nm；And in fig. 2b, described
Transparent nano film 3 includes the laminated construction of two high index layer/low index layer, that is, outside from interior glass plate 21 surface 211
It is sequentially depositing the first high refractive index layer 301, the first low-index layer 302, the second high refractive index layer 303 and the second low-index layer
304, the geometric thickness of the first high refractive index layer 301 is preferably 5～35nm, and the geometric thickness of the first low-index layer 302 is preferred
For 5～35nm, the geometric thickness preferably 20～50nm of the second high refractive index layer 303, the geometry of the second low-index layer 304 is thick
Degree is preferably 80～130nm；So pass through reasonable design high refractive index layer and the film material of low-index layer and film layer is thick
Degree, can make it have outstanding machinery, chemically and thermally stability is it is ensured that IMAGE.Certainly, the present invention is acceptable
According to being actually needed, the laminated construction of more high index layer/low index layer is set, and accordingly based upon sandwiched product
The reflectivity of P polarization light and other optical index are optimized setting.
Alternatively, in the laminated construction of described high index layer/low index layer, high refractive index layer or low-index layer
Also can further include multiple sublayers；As shown in figure 3, high refractive index layer 31 includes the first sublayer 311 and the second sublayer 312；
And preferably, in high refractive index layer, the sublayer near interior glass 21 is the refractive index of the first sublayer 311 less than away from interior glass
21 sublayer is the refractive index of the second sublayer 312.
In FIG, the P polarization light 11 that projection light source 1 produces is with 57 degree of (Brewster's angle θB) incide described transparent receive
On rice film 3, because described transparent nano film 3 includes the high folding that at least one is outwards sequentially depositing from interior glass plate 21 surface 211
Penetrate the laminated construction of rate layer/low-index layer it is possible to direct reflecting part P polarization light 11 forms the first reflected light 12, the
One reflected light 12 can be directly entered the eyes of observer 100, forms display (HUD) the main picture that comes back；Due to described transparent nano
The very thin thickness of film 3, so the direction of propagation through the part P polarization light 11 of described transparent nano film 3 is also basically unchanged, goes forward side by side
Enter and in laminated glass 2, form first refractive light 13；Inside laminated glass 2, due to middle diaphragm 22 and described interior glass plate 21
Being not more than 0.1 with the refringence of outer glass plate 23 is that their refractive index is very close, so first refractive light 13 is in intermediate coat
Reflection is not occurred on the surface that piece 22 is contacted with interior glass plate 21 or outer glass plate 23 and the direction of propagation is basically unchanged, Zhi Dao
It is second surface 231 that one refraction light 13 reaches the surface 231 away from middle diaphragm 22 on outer glass plate 23, that is, outer glass plate
23 with the surface of air contact, the invertibity propagated according to reflection characteristic near Brewster's angle for the P polarization light and light, the
The intensity of the second reflected light 15 that one refraction light 13 is formed on second surface 231 is 0 or quite faint, and produces air inlet
In second refraction light 14；Even if when there is the second faint reflected light 15, its first surface 211 also to be again passed by and institute
State reflection and the refraction of transparent nano film 3, finally fainter from the third reflect light 16 of described transparent nano film 3 outgoing, from
And form fainter ghost image；In the case of certain background luminance, main picture/ghost image brightness ratio, observer 100 is difficult
To discover the presence of ghost image, new line now shows the no visual ghost image of (HUD) image clearly, has good display effect.
Wherein, described projection light source 1 is as the pertinent instruments instrument, outer of the display of the information such as word, image and automobile
Connect sensor or external smart machine etc. be connected and exported in the way of P polarization light 11 related text, image information such as speed,
Engine revolution, oil consumption, tire pressure, navigation, night vision wait until on laminated glass 2, thus observed by in-car observer 100.
Described projection light source 1 is element well known by persons skilled in the art, including but not limited to laser, light emitting diode (LED), liquid crystal
Display screen (LCD), electroluminescent (EL), cathode-ray tube (CRT), vacuum fluorescent display (VFD), collimating mirror, spherical correction mirror, convex
Lens, concavees lens, speculum and/or polariscope etc..Meanwhile, the position of projection light source 1 and incident angle are adjustable, to be suitable for
The observer 100 of in-car diverse location or height.
Wherein, described laminated glass 2 includes interior glass plate 21, outer glass plate 23 and is clipped in interior glass plate 21 and outer glass
Middle diaphragm 22 between plate 23, towards automotive interior, described outer glass plate 23 is towards automobile external, institute for described interior glass plate 21
Stating middle diaphragm 22 is thermoplastic polymer film piece, and in order to reduce the impact to first refractive light 13 for the middle diaphragm 22, selecting should
The refractive index close of the refractive index of middle diaphragm 22 and glass is middle diaphragm 22 and described interior glass plate 21 and outer glass plate 23
Refringence be not more than 0.1, more preferably in the middle of diaphragm 22 and described interior glass plate 21 and outer glass plate 23 refractive index
Difference is not more than 0.05, for example commonly used pvb film.Laminated glass 2 shown in Fig. 1 is to map convenient so drawing
Become straight, but in practical application, laminated glass 2 is bending it is to be understood that the laminated glass 2 of bending is institute of the present invention
Preferably scheme, but not limited to this, other transparent components, such as monolithic or more multi-slice pressure, flat straight or curved (bent
Rate is homogeneous or change), colourless or dyeing, all alternative described folder of transparent component that is made up of simple glass and/or plastics
Layer glass 2.
Wherein, P polarization light 11 of the present invention is with 57 degree of (Brewster's angle θB) incide from the air described transparent
In nanometer film 3, due to the very thin thickness of transparent nano film 3, so P polarization light 11 is equivalent to also with Brewster's angle θBIncide
On interior glass plate 21, the surface 211 away from middle diaphragm 23 is on first surface 211, and does not occur on first surface 211
Reflection or reflected intensity are very weak, Brewster's angle θ mentioned hereBRelevant with the refractive index of concrete optical material, in the present invention
In for general for the material of shield glass for, described Brewster's angle θBIt is about 57 degree.More strictly
Say, described Brewster's angle θBAlso relevant with the wavelength of P polarization light, but the general very little of this impact in the present invention, general
In the case of, can be by described Brewster's angle θ in the range of visible wavelength (380～780nm)BIt is considered as constant.As shown in Figure 5A,
The incident angle of P polarization light is 57 degree of Brewster's angle, and in head-up-display system of the present invention, HUD image (believe by speed
Breath) clear no ghost image.Meanwhile, during actual projection imaging, due to the size relationship of light source and the projection virtual image, Yi Jiqian
The factors such as the mounting structure of gear glass, light source position, the incident angle of P polarization light may be with Brewster's angle θBThere is deviation, but
Deviation angle, typically within 15 degree, such as 42～72 degree, preferably 55～70 degree, can be 55～64 degree, more preferably further
For 56～59 degree, in this case, although the reflected light coming from second surface 231 can not be completely eliminated and transparent
The reflected light phase specific strength producing in nanometer film 3 is still at a fairly low；As shown in Figure 5 B, the incident angle of P polarization light is to deviate cloth
9 degree of this special angle of scholar, that is, incident angle be 66 degree, now ghost image reflection image is sufficiently low with respect to principal reflection image brightness, ghost image reflection
Swoon as the relatively low light level on side as being rendered as principal reflection, human eye is actually difficult to feel the presence of ghost image, therefore visually still no heavy
Shadow.Compared with Fig. 5 A and Fig. 5 B, Fig. 5 C is then that the new line of common laminated glass shows (HUD) image, its ghost image reflection image and master
The brightness of reflection image is almost close, can apparently find out the presence of ghost image, and practical effect is substantially not so good as the present invention
In Fig. 5 A and Fig. 5 B.
In the present invention, in order to obtain display (HUD) the main picture that clearly comes back, preferably described transparent nano film 3 is to described P
The reflectivity of polarised light is not less than 5%, more preferably higher than 10%；For example described transparent nano film 3 includes a TiO2
The laminated construction of 65.6nm/SiO2 102nm, transparent nano film 3 to P polarization light with 66 degree of angle reflectance spectrum when incident
As shown in A1 in Fig. 4, its reflectivity is up to 20.27%, and the corresponding reflected light from non-plated membrane interface such as first surface 211
As shown in B1 in Fig. 4, its reflectivity only 0.62% is it is seen that the reflectivity of the former transparent nano film 3 is 33 times of the latter to spectrum；With
Sample, for example described transparent nano film 3 includes the laminated construction of two TiO2/SiO2, and specific laminated construction is：Interior glass/
TiO2 16.2nm/SiO2 18.5nm/TiO2 30.5nm/SiO2 111.7nm, transparent nano film 3 is to P polarization light with 66 degree
As shown in A2 in Fig. 4, its reflectivity is 14.59% to reflectance spectrum when angle is incident, and corresponding from non-plated membrane interface such as
The reflectance spectrum of first surface 211 as shown in B2 in Fig. 4, its reflectivity only have 0.58% it is seen that the former transparent nano film 3 anti-
The rate of penetrating is 25 times of the latter.Transparent nano film 3 of the present invention is far above non-plated film circle to the reflectivity of incident P polarization light
The reflectivity in face (such as laminated glass surface), this is favourable for the HUD image of the visual no ghost image of acquisition.
In order to illustrate in greater detail and more supporting to convincingness the inventive point of the present invention, now enumerate some embodiments and carry out
Elaborate.
Embodiment 1～3 and comparative example 1
The sodium-calcium-silicate float glass that the thickness being produced with Fu Yao group is 2.1 millimeters, as substrate, through cutting, grinds
After the operations such as side, washing and drying, enter magnetron sputtering plating line and carry out coated film deposition, in alternating deposit such as table 1 on substrate
Transparent nano film film layer, after film deposition terminates, the thickness being produced with Fu Yao group is 2.1 millimeters of sodium-calcium-silicate float glass process
Glass is to join piece, according to the shaping of vehicle glass high temperature molding processes, the more colourless PVB glue of upper a piece of 0.76 mm of thickness of middle folder
Piece, then close piece in autoclave mesohigh, or even also process after for example annexes are installed through other and make deposition and have transparent nano film
Laminated glass, design parameter is shown in Table 1.
Wherein, embodiment 1 includes the laminated construction of a high index layer/low index layer for transparent nano film, implements
Example 2 includes the laminated construction of two high index layer/low index layer for transparent nano film, and embodiment 3 is in transparent nano film
High refractive index layer include the situation of two sublayers；Comparative example 1 is the ordinary flat laminated glass of no plated film, and its structure is two panels
The colourless PVB film of 0.76 millimeter of last layer is pressed from both sides between 2.1 millimeters of float glasses；In addition to coated film deposition, remaining technical process is ibid.
Projection light source in the head-up-display system of embodiment 1～3 and comparative example 1 is the TFT-LCD projection of LED-backlit
Machine, wherein also comprises multiple speculums, adjusts projector position and the angle incident direction of emergent light allows the viewer to enough observations
To display image reach the most clear.When being imaged with comparative example glass, add a piece of tree between projector and glass
Fat half-wave plate makes polarization direction be changed into S-polarization to be used for improving brightness of image, keeps P polarization light incident in embodiment 1～3.
Table 1：Embodiment 1～3 and the head-up-display system of comparative example 1 composition
The polarised light in the head-up-display system that embodiment 1～3 and comparative example 1 are constituted producing projection light source is with different angles
Degree is incident, and image quality all illustrates in table 2.
Table 2：The image quality of the head-up-display system that embodiment 1～3 is constituted
As can be seen here, in embodiment 1～3 constitute head-up-display system can P polarization light respectively with 57 degree, 66 degree very
Visual no ghost image all can be reached to display image during 72 degree of incidence such that it is able to not adopt wedge shape pvb film or additional
Optical element can eliminate or mitigate ghost phenomena so that overall structure and process is simple, with low cost and safe, durable
With elegant in appearance.
Present invention embodiment enumerated above is all in the structure composition of description head-up-display system, and such as specific film layer
The concrete manufacture craft of depositing operation, parameter and laminated glass articles and parameter all do not describe it is to be appreciated that these not
The part of description is all well known to those of ordinary skill in the art, therefore the part not described does not affect the claimed model of the present invention
Enclose.
Above content has been described in detail to head-up-display system of the present invention, and lists multiple embodiments
Illustrate, but the present invention do not limited to by specific embodiments described above content and corresponding embodiment, thus all according to
Any improvement, equivalent modifications and replacement carrying out according to technical key point etc., belongs to the scope of protection of the invention.
Claims (8)
1. a kind of head-up-display system, including projection light source and laminated glass, described laminated glass includes interior glass plate, outer glass
Plate and be clipped in middle diaphragm between interior glass plate and outer glass plate it is characterised in that：Also include transparent nano film, described
Bright nanometer film is deposited on interior glass plate farthest away from the surface of middle diaphragm, and described transparent nano film includes at least one from interior glass
The laminated construction of the high index layer/low index layer that glass plate surface is outwards sequentially depositing, the refractive index of described high refractive index layer
It is not less than 1.8, the refractive index of described low-index layer is not higher than 1.6, described interior glass plate and outer glass plate and described intermediate coat
The refringence of piece is not more than 0.1；Described projection light source is used for producing P polarization light, and P polarization light incides described transparent nano film
On, described transparent nano film is not less than 5% to the reflectivity of described P polarization light, and the incident angle of described P polarization light is 42～72
Degree；
Described high refractive index layer is selected from the oxide of Zn, Sn, Ti, Nb, Zr, Ni, In, Al, Ce, W, Mo, Sb, Bi element and its mixes
At least one in compound, or the nitride of Si, Al, Zr, Y, Ce, La element, nitrogen oxides and its mixture；Described low refraction
Rate layer choosing is from SiO2、Al2O3And its at least one in mixture.
2. head-up-display system according to claim 1 it is characterised in that：The incident angle of described P polarization light be 55～
70 degree.
3. head-up-display system according to claim 1 it is characterised in that：Described interior glass plate and outer glass plate with described
The refringence of middle diaphragm is not more than 0.05.
4. head-up-display system according to claim 1 it is characterised in that：Described transparent nano film is to described P polarization light
Reflectivity be higher than 10%.
5. head-up-display system according to claim 1 it is characterised in that：Described transparent nano film includes a high refraction
The laminated construction of rate layer/low-index layer, the wherein geometric thickness of high refractive index layer be 50～100nm, low-index layer several
What thickness is 80～120nm.
6. head-up-display system according to claim 1 it is characterised in that：Described transparent nano film includes two high refractions
The laminated construction of rate layer/low-index layer, is outwards sequentially depositing the first high refractive index layer, the first low folding from interior glass pane surface
Penetrate rate layer, the second high refractive index layer and the second low-index layer, the geometric thickness of the first high refractive index layer is 5～35nm, first
The geometric thickness of low-index layer is 5～35nm, and the geometric thickness of the second high refractive index layer is 20～50nm, the second low-refraction
The geometric thickness of layer is 80～130nm.
7. head-up-display system according to claim 1 it is characterised in that：In described high index layer/low index layer
Laminated construction in, high refractive index layer or low-index layer also include multiple sublayers.
8. head-up-display system according to claim 7 it is characterised in that：Near the sublayer of interior glass in high refractive index layer
Refractive index be less than away from interior glass sublayer refractive index.
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| JP5101257B2 (en) * | 2007-11-26 | 2012-12-19 | 株式会社東芝 | Optical film for head-up display, head-up display, and moving body |
| CN204166197U (en) * | 2014-10-14 | 2015-02-18 | 福耀玻璃工业集团股份有限公司 | A kind of head-up-display system |
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2014
- 2014-10-14 CN CN201410540045.8A patent/CN104267498B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022106577A1 (en) | 2020-11-19 | 2022-05-27 | Eyelights | Head-up display device |
| EP4266112A4 (en) * | 2021-03-29 | 2024-08-28 | Fuyao Glass Industry Group Co., Ltd. | Head-up display system |
| EP4492135A4 (en) * | 2022-04-21 | 2025-06-18 | Shenzhen Yinwang Intelligent Technologies Co., Ltd. | Projection apparatus and vehicle |
| WO2025098949A1 (en) | 2023-11-10 | 2025-05-15 | Agc Glass Europe | Vehicle head-up display |
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|---|---|
| CN104267498A (en) | 2015-01-07 |
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