CN109686276B - Intelligent show window system - Google Patents

Intelligent show window system Download PDF

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CN109686276B
CN109686276B CN201710979154.3A CN201710979154A CN109686276B CN 109686276 B CN109686276 B CN 109686276B CN 201710979154 A CN201710979154 A CN 201710979154A CN 109686276 B CN109686276 B CN 109686276B
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refractive index
layer
film
index material
material layer
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CN109686276A (en
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于甄
张国臻
夏振
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Zhangjiagang Kangdexin Optronics Material Co Ltd
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Zhangjiagang Kangdexin Optronics Material Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface

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Abstract

The invention provides an intelligent show window system. This intelligent shop window system includes: a cabinet window layer; a projection device; the display film comprises a narrow-band reflecting filmThe narrow-band reflective film is arranged on the inner wall of the cabinet window layer and used for reflecting light projected by the projection device so as to display an image corresponding to the image projected by the projection device, the narrow-band reflective film comprises a reflective film system, and the reflective film system comprises at least one film system with a structure of alpha1Hβ1Lα2Hβ2L...αmHβmL) film stack of alpha1，α2，...，αmAnd betam，...，β2，β1The same gradient rule on the same cosine waveform or sine waveform is satisfied independently; the controller projection device is electrically connected with the controller. When the narrow-band reflection film works, the narrow-band reflection film reflects light projected by the projection device and responds to the light to display corresponding image information, and an additional backlight source is not needed, so that the color and the shape of a projected image are more real.

Description

Intelligent show window system
Technical Field
The invention relates to the technical field of show window display equipment, in particular to an intelligent show window system.
Background
With the increasing physical living standard of people, the traditional show window display cannot catch the eyes of consumers. The general show window usually adopts posters, models or ornaments to achieve the effect of publicity. The existing information display machine and touch information display all-in-one machine in the market are usually large in size and heavy, and are usually not placed outdoors but used indoors (such as in a business hall) in business hours for safety reasons.
In the commercial display field, the show window is an excellent position for commercial display or interactive display, has small occupied area, can be used for 24 hours, can greatly improve the safety, effectively protects the liquid crystal screen, and has great practical commercial application value.
Although display technology for shop window touch has emerged in the prior art, it has the following disadvantages in itself;
1. the transparent sensing film for the show window glass is fixedly adhered to the inner side of the show window glass, the leading-out wire of the sensing film is connected with a computer, and the display is a separate device. When in use, the display is close to the show window induction film and can be used after being corrected. Because the film is embedded in the film by the metal conductive filaments, the process structure is complex, the manufacturing cost is high, the service life is short, and the large-scale commercial application cannot be realized.
2. The existing show windows displayed by using a projection mode all need a backlight source, and the backlight source is superposed with a light source for projection, so that the colors and the shapes of projected images are not real enough, and energy is consumed.
Disclosure of Invention
The invention mainly aims to provide an intelligent show window system to solve the problems that a show window display system in the prior art needs a backlight source and is poor in display effect.
In order to achieve the above objects, the present invention provides an intelligent shop window system including a shop window layer; a projection device; the display film comprises a narrow-band reflection film, the narrow-band reflection film is arranged on the inner wall of the cabinet window layer and used for reflecting light projected by the projection device so as to display an image corresponding to the image projected by the projection device, the narrow-band reflection film comprises a reflection film system, the reflection film system is arranged on the inner wall of the cabinet window layer and comprises n superposed high-refractive-index and low-refractive-index material units, each high-refractive-index material unit comprises a high-refractive-index material layer and a low-refractive-index material layer matched with the high-refractive-index material unit, and the reflection film system comprises at least one film system structure of (alpha-alpha)1Hβ1Lα2Hβ2L...αmHβmL) wherein H represents a high refractive index material layer, L represents a low refractive index material layer, n and m are positive integers, n is greater than 3 and less than or equal to 150, m is greater than 3 and less than or equal to 50, m is less than or equal to n, and alpha in the same film stack1，α2，...，αmAnd betam，...，β2，β1The same gradient rule on the same cosine waveform or sine waveform is satisfied independently; for the ith high and low index material unit alphaiHβiL，1≤i≤n,αiDenotes the multiple of lambda/4, beta, of the optical thickness of the ith high refractive index material layer in the direction perpendicular to the shop window layeriMeaning that the optical thickness of the ith low refractive index material layer in a direction perpendicular to the shop window layer is λA multiple of/4, λ being the monitoring wavelength of the stack; the projection device is electrically connected with the controller.
Further, in the same film stack, for the ith high-low refractive index material unit alphaiHβiL, the optical thickness of the high refractive index material layer is alphaiλ/4, optical thickness of low refractive index material layer of βiλ/4, refractive index of the high refractive index material layer is NHThe physical thickness of the high refractive index material layer is DHThen N is presentH*DH=αiλ/4; the low refractive index material layer has a refractive index NLThe physical thickness of the low refractive index material layer is DLThen N is presentL*DL=βiλ/4; wherein alpha is1，α2，...，αmAnd betam，...，β2，β1The gradient-changing method is characterized in that the gradient-changing method independently satisfies the same gradient rule on the upper left half chord, the lower left half chord, the upper right half chord and the lower right half chord of the same sine waveform or cosine waveform in the range of 0-2 pi.
Further, when the narrow-band reflective film is monitored at a wavelength of 455nm, α isi，βiThe value range of (A) is as follows: alpha is more than or equal to 0.01i≤3.2，0.01≤βi3.2 or less, preferably 0.05 or less alphai≤2.8，0.05≤βiLess than or equal to 2.8; preferably, 0.1. ltoreq. alpha.i≤2.8，0.1≤βiLess than or equal to 2.8; more preferably, 0.2. ltoreq. alpha.i≤2.7，0.2≤βi≤2.7。
Furthermore, the number of the high-refractive index material units and the low-refractive index material units of the film stack accounts for 60-99% of the total number of the high-refractive index material units and the low-refractive index material units of the reflecting film system.
Further, the physical thickness of the high refractive index material layer is 1 to 400nm, preferably 10 to 150nm, and the physical thickness of the low refractive index material layer is preferably 1 to 400nm, preferably 10 to 150 nm.
Furthermore, the refractive index of the high refractive index material layer is 1.5-5.0, preferably 1.65-3.0, and the refractive index of the low refractive index material layer is 1.1-1.5, preferably 1.25-1.48.
Further onThe refractive index materials forming the high refractive index material layer and the low refractive index material layer are respectively and independently selected from MgF2、CaF2Transition metal fluoride, ZnO, TiO2、TiN、In2O3、SnO3、Cr2O3、ZrO2、Ta2O5、LaB6、NbO、Nb2O3、Nb2O5、SiO2、SiC、Si3N4、Al2O3And a fluorine-containing resin or a hollow silica-containing resin.
Further, the total number of layers of the high refractive index material layer and the low refractive index material layer is 12-60.
Furthermore, the optical admittance of the high-refractive-index material unit is more than 1.5 or 1 & lt, A & lt, 1.2, and the narrow-band reflection film can reflect light with the wavelength of 380-1200 nm in the width range of 20-50 nm.
Further, the reflection film system further comprises a transparent substrate layer, and the high-low refractive index material unit is superposed on one or two opposite surfaces of the transparent substrate layer.
Furthermore, the reflecting film system also comprises one or more first bonding layers, and part of adjacent film stacks are bonded through the first bonding layers; the first bonding layer is preferably an OCA (optical clear adhesive) layer or a PSA (pressure sensitive adhesive) layer, and the thickness of the first bonding layer is preferably 0.005-0.2 mm.
Further, the above display film further includes: the transparent touch control induction film is arranged on the inner wall of the cabinet window layer, the narrow-band reflection film is arranged on one side of the transparent touch control induction film, which is far away from the cabinet window layer, and the transparent touch control induction film is electrically connected with the controller and used for inducing touch information of a user; the second adhesive layer is arranged on the surface of one side, far away from the transparent touch sensing film, of the narrow-band reflecting film; and the water vapor barrier film is arranged on the surface of one side, far away from the narrow-band reflecting film, of the second bonding layer.
Further, the display film further comprises a scratch-resistant protective film layer, the scratch-resistant protective film layer is attached to one side, away from the cabinet window layer, of the water vapor barrier film, the scratch-resistant protective film layer is preferably a PET (polyethylene terephthalate) layer, a PC (polycarbonate) layer, a PVC (polyvinyl chloride) layer or a PP (polypropylene) layer, and the thickness of the scratch-resistant protective film layer is more preferably 40-200 microns.
Further, the thickness of the transparent touch sensing film is 100-300 μm; preferably, the thickness of the water vapor barrier film is 3-10 mu m; preferably, the display film is attached to the window layer by a transparent mounting adhesive.
Furthermore, the transparent mounting glue forms a glue layer, and the thickness of the glue layer is 10-20 micrometers.
By applying the technical scheme of the invention, the intelligent show window system is provided with the projection device and the display film, the display film comprises the narrow-band reflection film, when the intelligent show window system works, the projection device projects an image on the display film, at the moment, the narrow-band reflection film reflects light projected by the projection device and responds to the light to display corresponding image information, and an additional backlight source is not needed, so that the color and the shape of a projected image are more real, and energy is saved. And due to the narrow-band reflection effect of the narrow-band reflection film, the reflected effect is sharp in color and presents metal texture.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 schematically shows a block diagram of an embodiment of the intelligent shop window system of the invention;
fig. 2 schematically shows a cross-sectional view of an embodiment of a display film of the smart shop window system of the present invention;
FIG. 3 is a schematic cross-sectional view of a narrow-band reflective film provided in accordance with a preferred embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a narrow-band reflective film provided in accordance with another preferred embodiment of the present invention;
FIG. 5 is a simulated test chart showing the light reflection performance of the narrow-band reflective film of example 1 using the Essential Macleod film system design software according to the present invention;
FIG. 6 is a schematic view showing a transmittance test optical path system structure of a narrow-band reflective film according to embodiment 2 of the present invention;
FIG. 7 is a graph showing the results of light reflectance obtained as a result of transmittance test of a narrow-band reflective film according to example 2 of the present invention;
FIG. 8 is a simulated test chart showing the light reflectance performance of the narrow-band reflective film of example 3 using the Essential Macleod film system design software according to the present invention;
FIG. 9 is a simulated test chart showing the light reflectance performance of the narrow-band reflective film of example 4 using the Essential Macleod film system design software according to the present invention;
FIG. 10 is a simulated test chart showing the light reflectance performance of the narrow-band reflective film of example 5 using the Essential Macleod film system design software in accordance with the present invention;
FIG. 11 is a simulated test chart showing the light reflection performance of the narrow-band reflective film of example 6 using the Essential Macleod film system design software according to the present invention;
FIG. 12 is a graph showing simulated test of light reflectance performance of the narrow-band reflective film of comparative example 1 using the Essential Macleod film system design software in accordance with the present invention; and
fig. 13 shows a simulated test chart of the light reflection performance of the narrow-band reflective film of comparative example 2 using the Essential mechanical film system design software according to the present invention.
Wherein the figures include the following reference numerals:
10. a cabinet window layer; 20. a projection device; 30. a display film; 31. a transparent touch sensing film; 32. a narrow band reflective film; 33. a bonding layer; 34. a water vapor barrier film; 35. a scratch resistant protective film layer; 40. a controller;
310. a transparent substrate layer; 320. stacking the films; 321. a high refractive index material layer; 322. a layer of low refractive index material; 323. a bonding layer;
W1a tungsten lamp; d1A deuterium lamp; m1～M10A reflector; G. a grating; s1An entrance slit; s2An exit slit; C. a chopper modulator; r, a reference light colorimetric pool; s, a sample light colorimetric pool; PMT, photomultiplier tube.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As described in the background art, the existing showcases displayed by using the projection method all require a backlight source, and the backlight source is overlapped with the light source of the projection, so that the colors and shapes of the projected images are not real enough, and energy is consumed.
Referring to fig. 1 to 4, in order to solve the above problems, the present invention provides an intelligent window system including a window layer 10, a projection device 20, a display film 30 and a controller 40, wherein the display film 30 includes a narrow-band reflection film 32, the narrow-band reflection film 32 is used for reflecting light projected by the projection device 20 to display an image corresponding to the image projected by the projection device 20, the narrow-band reflection film 32 includes a reflection film system, the reflection film is disposed on an inner wall of the window layer 10, the reflection film system includes n stacked high and low refractive index material units, each high and low refractive index material unit includes a high refractive index material layer 321 and a low refractive index material layer 322 paired with the high and low refractive index material layer, and the reflection film includes at least one film system having an α -i structure1Hβ1Lα2Hβ2L...αmHβmL) film stack 320, wherein H represents a high refractive index material layer 321, L represents a low refractive index material layer 322, n and m are positive integers, n is greater than 3 and less than or equal to 150, m is greater than 3 and less than or equal to 50, m is less than or equal to n, and alpha in the same film stack 3201，α2，...，αmAnd betam，...，β2，β1The same gradient rule on the same cosine waveform or sine waveform is satisfied independently; for the ith high and low index material unit alphaiHβiL，1≤i≤n，αiDenotes the number of times of λ/4, β, of the optical thickness of the ith high refractive index material layer 321 in the direction perpendicular to the window layer 10iDenotes the optical thickness of the ith low refractive index material layer 322 in a direction perpendicular to the window layer 10 as a multiple of λ/4, λ being the monitored wavelength of the stack; controller 40 the projection device 20 is electrically connected to the controller 40.
It should be noted that the sine waveform and the cosine waveform in the present application are variation trends (limited to the variation trend, and the specific numerical values are not limited by quadrants and positive and negative values) of the standard sine waveform and the cosine waveform in the coordinate system, that is, the sine waveform includes an upper half chord and a lower half chord that are symmetrically arranged, the upper half chord includes an upper left half chord and an upper right half chord, and the lower half chord includes a lower left half chord and a lower right half chord; the cosine waveform comprises a left half chord and a right half chord which are symmetrically arranged, the left half chord is a decreasing chord, the right half chord is an increasing chord, the left half chord comprises a left upper half chord and a left lower half chord, and the right half chord comprises a right upper half chord and a right lower half chord.
When installed, the projector 20 is installed on an external device, such as a ceiling, a wall, etc., to project an image onto the window layer 10, the display film 30 is attached to the inner wall of the window layer 10, and the projector of the present invention is electrically connected to the controller 40. When the display device works, a worker opens the projection device 20 to project on the show window layer 10 and the display film 30, at the moment, the narrow-band reflection film reflects light projected by the projection device and responds to the light to display corresponding image information, and no additional backlight source is needed in the whole process, so that the color and the shape of a projected image are more real, and energy is saved.
In addition, the narrow-band reflective film 32 of the present application has a prominent narrow-band reflection effect, which is described in detail as follows:
since the cosine and sine waveforms are only phase differences. For convenience of description, only the cosine waveform will be described below. At present, in order to realize narrow-band reflection, the prior art is dedicated to increasing the number of layers of high refractive index material layers and low refractive index material layers in a reflective film system and selecting refractive materials, the inventor of the present application unexpectedly finds that, when the thickness variation of the high refractive index material layers and the low refractive index material layers has direct correlation to the bandwidth of a reflection peak, based on the fact that the inventor of the present application has conducted intensive research on the thickness variation rule of the high refractive index material layers and the low refractive index material layers, and finds that a cosine film stack formed by the gradual variation of the optical thickness coefficients of the high refractive index material layers 321 and the low refractive index material layers 322 following the rule of cosine waveform has an outstanding effect on reducing the bandwidth of the reflection peak. The action principle of the method is that:
according to the Fabry-Perot interference principle, when the frequency of the incident light satisfies the resonance condition, the transmission spectrum has a high peak value, which corresponds to a high transmittance. Assuming an interference intensity distribution:
Figure GDA0001538275990000051
in the formula I0Is the incident light intensity; r is the energy reflectivity of the reflecting surface; δ is a phase difference between two adjacent coherent light beams, and R + T is 1(R is surface reflectance of the film system, and T is transmittance) depending on an incident light tilt angle. Since the distance between the adjacent high refractive index layers and the distance between the adjacent low refractive index material layers are equal to the distance of the spacer layer, and the interference reaches the maximum when the distance of the spacer layer is a multiple of lambda/4 according to the Fabry-Perot interference principle, and the period of the cosine is gradually increased according to the cosine wave characteristic of the wave particle binary transmission of light, the film system structure is arranged in the reflective film system as alpha (alpha)1Hβ1Lα2Hβ2L...αmHβmL) — film stack, since the optical thickness coefficients (i.e., α, β) of the high refractive index material layer and the low refractive index material layer of the film stack follow the regular gradient of cosine waveform, that is, the distance between the adjacent high refractive index layers and the distance between the adjacent low refractive index material layers exhibit the regular gradient of cosine waveform, the interference effect of specific wavelength is enhanced, and then the band range in which interference is formed corresponding to the corresponding refractive index tends to be narrowed, that is, the film stack narrows the wavelength range of light in which the reflectivity is sharply changed to a great extent, thereby exhibiting the effect of narrow-band reflection, and then the color of the reflected effect is sharp, and metallic texture is exhibited. The image of the projection device reflected by the narrow-band reflecting film is clearer and the image quality is more vivid when the narrow-band reflecting film is combined with the intelligent show window system.
The monitoring wavelength is determined by the incident light wavelength of the usage environment of the film stack, for example, 550nm is selected as the monitoring wavelength of visible light, and 750nm is selected as the monitoring wavelength of infrared light, which can be specifically selected according to the prior art, and is not described herein again.
In a preferred embodiment of the present invention, the narrow-band reflection effect can be achieved by changing the optical thickness coefficients of the high refractive index material layer 321 and the low refractive index material layer 322 according to the same gradient rule on sine waveform or cosine waveform, and for the ith high and low refractive index material unit α in the same film stack 320iHβiL, optical thickness of the high refractive index material layer 321 is αiλ/4, optical thickness of low refractive index material layer 322 is βiλ/4, refractive index of the high refractive index material layer 321 is NHThe high refractive index material layer 321 has a physical thickness DHThen N is presentH*DH=αiλ/4; the low refractive index material layer 322 has a refractive index NLThe low refractive index material layer 322 has a physical thickness DLThen N is presentL*DL=βiλ/4; wherein alpha is1，α2，...，αmAnd betam，...，β2，β1The gradient-changing method is characterized in that the gradient-changing method independently satisfies the same gradient rule on the upper left half chord, the lower left half chord, the upper right half chord and the lower right half chord of the same sine waveform and cosine waveform in the range of 0-2 pi. The optical thickness coefficients follow the waveform change rule of four half-chords of the same sine wave in the range, and the difference value of the obtained optical thickness is in a narrower range, so that the narrow-band effect can be better exerted; and the common half-wave hole in the design of the optical film can not appear (in the actual preparation of the optical filter, a reflection peak is often appeared in a band-pass region, namely, a half-wave hole is generally called as the half-wave hole, and is also called as the half-wave falling of the optical filter).
Alpha at 455nm as the monitor wavelength for the narrow-band reflective film 32 in order to obtain a more easily achievable physical thickness and to control the total physical thickness of the narrow-band reflective filmi，βiThe value range of (A) is as follows: alpha is more than or equal to 0.01i≤3.2，0.01≤βi3.2, preferably 0.05. ltoreq. alphai≤2.8，0.05≤βiLess than or equal to 2.8, one is addedStep optimization is more than or equal to 0.1 alphai≤2.8，0.1≤βiLess than or equal to 2.8; more preferably 0.2. ltoreq. alpha.i≤2.7，0.2≤βi≤2.7。
Further, in order to ensure the narrow band effect of the film stack 320, the number of the high-refractive index material units in the film stack 320 is preferably 60 to 99% of the total number of the high-refractive index material units in the reflective film system. The physical thickness of the high refractive index material layer 321 is preferably 1 to 400nm, preferably 10 to 150nm, and the physical thickness of the low refractive index material layer 322 is preferably 1 to 400nm, preferably 10 to 150 nm.
The refractive index of the high refractive index material layer 321 and the refractive index of the low refractive index material layer 322 can refer to the refractive index of the material for manufacturing the reflective film in the prior art, the refractive index of the high refractive index material layer 321 is 1.5 to 5.0, preferably 1.65 to 3.0, and the refractive index of the low refractive index material layer 322 is 1.1 to 1.5, preferably 1.25 to 1.48.
The refractive index materials forming the high refractive index material layer 321 and the low refractive index material layer 322 having the refractive indexes described above may be selected from refractive index materials commonly used in the art, and the refractive index materials forming the high refractive index material layer 321 and the low refractive index material layer 322 are each independently selected from MgF2、CaF2Transition metal fluoride, ZnO, TiO2、TiN、In2O3、SnO3、Cr2O3、ZrO2、Ta2O5、LaB6、NbO、Nb2O3、Nb2O5、SiO2、SiC、Si3N4、Al2O3And a fluorine-containing resin or a hollow silica-containing resin.
In addition, in order to increase the reflectance of the reflective film to a target wavelength, the total number of layers of the high refractive index material layer 321 and the low refractive index material layer 322 is preferably 12 to 60.
Preferably, the optical admittance of the high-refractive-index material unit is greater than 1.5 or 1 < A < 1.2, and the narrow-band reflective film can reflect light with a wavelength in a range of 380-1200 nm (A represents optical admittance) in a width range of 20-50 nm.
In the present application, the high and low refractive index material units in the reflective film system may be directly disposed on the inner wall of the window layer 10, but the disposition of the window layer 10 in the present application cannot be flexibly achieved, and in order to improve the manufacturing efficiency of the intelligent window system in the present application and the flexibility of manufacturing the window layer and the narrow-band reflective film, as shown in fig. 3 or 4, it is preferable that the reflective film system further includes a transparent substrate layer 310, the high and low refractive index material units are stacked on one or two opposite surfaces of the transparent substrate layer 310, and then the reflective film system is disposed on the window layer 10 by means of bonding or the like. In a preferred embodiment of the present application, the transparent substrate layer 310 is a PET layer, a COP layer, a COC layer, a CPI layer, a PMMA layer, a PEN layer, a PC layer, or a TAC layer; the thickness of the transparent substrate layer 310 is preferably 1 to 50 μm.
Each high refractive index material layer 321 and each low refractive index material layer 322 in the reflective film system of the present application may be formed by coating or sputtering, and is limited by the manufacturing method, when the number of layers of the high refractive index material layer 321 and the low refractive index material layer 322 is large, a part of the high refractive index material layer 321 and the low refractive index material layer 322 may be disposed on different transparent substrate layers 310, and then the high refractive index material layer 321 and the low refractive index material layer 322 on two transparent substrate layers 310 are combined, that is, as shown in fig. 3 or 4, preferably, the reflective film system further includes one or more first bonding layers 323, and a part of adjacent film stacks 320 are bonded by the first bonding layers 323. After bonding, the excess transparent substrate layer may remain or may be removed, preferably it is removed.
In order to avoid unnecessary influence of the first adhesive layer 323 on light as much as possible, the first adhesive layer 323 is preferably an OCA adhesive layer or a PSA adhesive layer, and the thickness of the first adhesive layer 323 is more preferably 0.005 to 0.2 mm. So that the adhesive can meet the bonding requirement and ensure enough light transmittance.
In order to implement the touch function of the intelligent showcase system of the present invention, as shown in fig. 2, it is preferable that the display film 30 of the present invention further includes a transparent touch sensing film 31, a second adhesive layer 33 and a moisture barrier film 34, the transparent touch sensing film 31 is disposed on an inner wall of the showcase layer 10, the narrow-band reflective film 32 is disposed on a side of the transparent touch sensing film 31 away from the showcase layer 10, the transparent touch sensing film 31 is electrically connected to the controller 40 for sensing touch information of a user, and the second adhesive layer 33 is disposed on a surface of the narrow-band reflective film 32 on the side away from the transparent touch sensing film 31; a moisture barrier film 34 is provided on the side surface of the second adhesive layer 33 remote from the narrow-band reflective film 32.
When the touch screen is installed, a worker sets the transparent touch sensing film of the invention on the inner wall of the cabinet window layer, and sets the narrow-band reflection film 32 of the invention on the transparent touch sensing film 31. During work, a worker can realize touch control through the transparent touch control sensing film 31, and the transparent touch control sensing film 31 and the projection device are both electrically connected with the controller 40, so that information interaction between touch control information and projection information is realized. The second adhesive layer 33 is used to bond and fix the narrow-band reflective film 32 and the moisture barrier film 34, and the moisture barrier film can enhance the weatherability of the narrow-band reflective film and prevent the fluorescent material and the like from deteriorating.
In an embodiment of the present invention, the transparent touch sensing film 31 is a capacitive touch layer based on a metal mesh transparent conductive film, and includes a transparent substrate, a first metal mesh layer and a second metal mesh layer are respectively disposed on two sides of the transparent substrate, the first metal mesh layer is a first touch functional layer and is used for sensing the position of a touch point in the X-axis direction, and the second metal mesh layer is a second touch functional layer and is used for sensing the position of the touch point in the Y-axis direction. The transparent touch layer is further provided with a protective layer which is respectively positioned on the first metal grid layer and the second metal grid layer. The material of the metal grid layer is at least one of Cu, Ag, Al, Ti or Ni. The grid pattern of the metal grid layer is rectangular, square, rhombic, hexagonal or other polygons, the equivalent diameter of the meshes is 100-500 mu m, and the width of the grid lines is 1-5 mu m.
In order to prevent the narrow-band reflective film 32 and the transparent touch sensing film of the display film 30 of the present invention from being damaged by the external environment, as shown in fig. 2, the display film 30 of the present invention preferably further includes a scratch-resistant protective film layer 35, and the scratch-resistant protective film layer 35 is attached to the side of the moisture barrier film 34 away from the window layer 10. When the waterproof coating is installed, a worker attaches the scratch-resistant protective film 35 of the present invention to the water vapor barrier film 34. The scratch-resistant protective film layer 35 can effectively prevent the narrow-band reflective film 32 and the transparent touch sensing film from being damaged by the external environment, so that the use stability of the intelligent show window system is improved, and the service life is prolonged.
The scratch-resistant protective film layer 35 in the invention is a PET layer, a PC layer, a PEN layer or a PP layer. Wherein, PET is polyethylene terephthalate, PC is polycarbonate, PEN is polyethylene naphthalate, and PP is polypropylene. The scratch-resistant protective film of the present invention may be made of other materials, as long as the protective effect of the scratch-resistant protective film of the present invention is satisfied.
Among them, in order to secure scratch resistance, the thickness of the scratch-resistant protective film layer 35 is preferably 40 to 200 μm, and more preferably 70 μm.
In addition, in order to ensure the touch sensitivity, the thickness of the transparent touch sensing film 31 is preferably 100 to 300 μm, and more preferably 150 μm.
Further, in order to ensure an excellent moisture barrier effect, the thickness of the moisture barrier film 34 is preferably 3 to 10 μm.
For convenience of manufacture, the display film 30 of the present invention is preferably bonded to the cabinet layer 10 by an adhesive, specifically, a transparent mounting adhesive.
Further preferably, the transparent mounting adhesive forms an adhesive layer, and the thickness of the adhesive layer is 10-20 μm, preferably 15 μm.
In order to save space, the controller 40 in the present invention is preferably a micro-computer. The following describes the overall operation process of the intelligent show window system based on the narrow-band reflective film in detail, when the intelligent show window system works, the projection device 20 projects an image on the show window layer 10, and the narrow-band reflective film 32 on the inner side of the show window layer 10 responds and displays the image, meanwhile, the transparent touch sensing film 31 and the projection device 20 control and interact data through the controller 40, when the transparent touch sensing film senses the touch of a user, the data is transmitted to the controller 40 and analyzed through the controller 40, and after the analysis, the projection device 20 is controlled to perform corresponding change of the image.
The advantageous effects of the present application will be further described below with reference to examples and comparative examples.
Example 1
Simulation experiment data:
an antireflection layer and a reflection film system (formed by alternately overlapping a high refractive index material layer and a low refractive index material layer) are arranged on a PET layer with the thickness of 0.05mm, wherein the central wavelength of incident light is set to be 532nm, the high refractive index material layer is a titanium dioxide layer with the refractive index of 2.354, the low refractive index material layer is a silicon dioxide layer with the refractive index of 1.46, the antireflection layer is composed of the titanium dioxide layer with the optical thickness of lambda/4 and the silicon dioxide layer, and the optical thickness coefficient of the reflection film system is designed as follows:
a first half membrane stack: 0.216H 1.836L 0.303H 1.691L 0.377H 1.591L 0.561H 1.501L 0.583H 1.422L 0.677H 1.358L 0.762H 1.259L 0.851H 1.192L 0.102H 1.102L 1.010H 1.020L 1.106H 0.921L 1.184H 0.886L 1.255H 0.767L 1.346H 0.714L 1.444H 0.634L 1.552H 0.564L 1.625H 0.432L 1.680H 0.416L 1.755H 0.396L 1.902H 0.233L 3.280H 0.905L, wherein the optical thickness coefficient of the high index material layer increases in accordance with the upper right half chord of the cosine waveform and the optical thickness coefficient of the low index material layer decreases in accordance with the upper left half chord of the cosine waveform;
a second half-film stack: 0.306H 2.574L 0.425H 2.369L 0.528H 2.230L 0.784H 2.101L 0.816H 1.987L 0.951H 1.899L 1.066H 1.766L 1.192H 1.667L 1.294H 1.545L 1.412H 1.428L 1.547H 1.289L 1.656H 1.245L 1.758H 1.070L 1.886H 0.996L 2.025H 0.885L 2.175H 0.791L 2.278H 0.603L 2.348H 0.581L 2.457H 0.550L 2.661H 0.326L 4.594H 1.265L, wherein the optical thickness coefficient of the high refractive index material layer increases in accordance with the upper right half chord of the cosine waveform and the optical thickness coefficient of the low refractive index material layer decreases in accordance with the lower left half chord of the cosine waveform;
the optical film was disposed on the above PET layer, and bonded between 0.905L and 0.306H by a PSA having a thickness of 0.1 mm.
The light reflection performance of the narrow-band reflective film was simulated using the Essential Macleod film system design software, and the simulation results are shown in fig. 5 and table 1.
Example 2
Two half film stacks of the narrow-band reflective film corresponding to example 1 were prepared by magnetron sputtering, and a substrate (on which a 0.05mm PET layer was provided) was cleaned with clean cloth and ethanol. And (3) deflating the vacuum chamber, cleaning the inside of the bell jar by using a dust collector, filling the molybdenum boat with the film material to be evaporated, and recording the name of the film material of each boat. And the substrate is placed on the substrate holder without tilting the substrate. The bell jar is dropped down, and the vacuum chamber is vacuumized according to the operation rules of the film coating machine. When the vacuum degree reaches 7 multiplied by 10-3And after Pa, pre-melting the film materials in the molybdenum boat in sequence to remove gas in the film materials. At this point, attention is paid to the baffle plate to prevent the substrate from being plated in the pre-melting process. When the vacuum degree meets the requirement, plating is carried out by adopting a method of controlling the optical thickness by adopting a lambda/4 extreme value method, and the control wavelength is placed at 532 nm. Titanium dioxide is first plated on the PET layer of the substrate and the photocurrent indicated by the amplifier will drop as the film layer thickens. When the photocurrent value just begins to rise, the baffle is immediately stopped. And then, reducing the current to change the electrode, plating silicon dioxide, wherein when the silicon dioxide is plated, the photocurrent rises along with the increase of the film thickness, stopping plating the film when the extreme value is reached, and repeating the steps to plate the film. When a spacer layer with an optical thickness of lambda/2 is plated, the thickness is doubled and should be stopped when the photocurrent rises and then falls to the extreme value. The latter layers are controlled as the former layers.
And after the coating is finished, stopping heating and vacuumizing according to the operating specification of the coating machine. After half an hour, the vacuum chamber of the film coating machine can be inflated to take out the coated interference filter. Then the coating machine is vacuumized according to the operating specification to keep clean, and finally the machine is stopped. The two half-film stacks were then bonded using a 0.1mm PSA. The measurement is carried out on a TU-1221 double-beam ultraviolet and visible spectrophotometer, a T-lambda curve is directly measured, and three main parameters lambda of the medium interference rate filter are obtained from the curve0、Tmax、Δλ/λ0. The optical path system of the photometer is shown in FIG. 6. The principle of operation of a spectrophotometer is as follows: black lamp W1Or deuterium lamps D2The emitted light passes through a mirror M1An entrance slit S1And a mirror M2After being collimated, the light irradiates the grating G, and the light diffracted by the grating G passes through the reflecting mirror M3And an emission slit S2Mirror M4And a mirror M5The light chopper C divides the light into two paths: one path is a reflector M6Reference light colorimetric cell R and reflector M8The other path is a reflecting mirror M7Sample optical colorimetric pool S and reflector M9And a mirror M10And the sample is placed in a sample optical colorimetric pool of the optical path. The two paths of light intensity are alternately received by the photomultiplier and compared in intensity, and the transmittance of the sample is obtained. By changing the rotation angle of the chopper G, different wavelengths can be selected for measurement, so as to obtain a complete transmittance curve, and the transmittance curve is converted into a reflectance curve, which is shown in fig. 7 and table 1.
Example 3
Simulation experiment data:
the optical thickness coefficients of the high refractive index material layer and the low refractive index material layer of the film system were the same as in example 1, with two half film stacks disposed on opposite surfaces of the PET layer. The light reflection performance of the narrow-band reflective film was simulated by using the Essential Macleod film system design software, and the simulation results are shown in fig. 8 and table 1.
Example 4
Simulation experiment data:
an antireflection layer and a reflection film system (formed by alternately overlapping a high refractive index material layer and a low refractive index material layer) are arranged on a PET layer with the thickness of 0.05mm, wherein the central wavelength of incident light is set to 520nm, the high refractive index material layer is a titanium dioxide layer with the refractive index of 2.354, the low refractive index material layer is a silicon dioxide layer with the refractive index of 1.46, the antireflection layer is composed of the titanium dioxide layer with the optical thickness of lambda/4 and the silicon dioxide layer, and the optical thickness coefficient of the reflection film system is designed as follows:
COP 0.251H 1.592L 0.552H 1.487L 0.582H 1.404L 0.675H 1.344L 0.764H 1.253L 0.834H 1.186L 0.916H 1.097L 0.988H 1.026L 1.088H 0.918L 1.165H 0.892L 1.248H 0.765L 1.350H 0.714L 1.446H 0.631L 1.552H 0.565L 1.620H 0.412L 1.250H 1.405L Air，
the light reflection performance of the narrow-band reflective film was simulated by using the Essential Macleod film system design software, and the simulation results are shown in fig. 9 and table 1.
Example 5
Simulation experiment data:
an antireflection layer and a reflection film system (formed by alternately overlapping a high refractive index material layer and a low refractive index material layer) are arranged on a PET layer with the thickness of 0.05mm, wherein the central wavelength of incident light is set to 520nm, the high refractive index material layer is a titanium dioxide layer with the refractive index of 2.354, the low refractive index material layer is a silicon dioxide layer with the refractive index of 1.46, the antireflection layer is composed of the titanium dioxide layer with the optical thickness of lambda/4 and the silicon dioxide layer, and the optical thickness coefficient of the reflection film system is designed as follows:
COP 1.667H 1.790L 1.352H 1.284L 1.298H 1.368L 1.474H 1.567L 1.736H 2.055L 1.955H 2.135L 0.554H 1.435L 0.971H 1.206L 1.276H 1.409L 1.487H 1.606L 1.712H 1.874L 1.004H 2.104L 0.947H 1.046L 1.019H 1.135L 1.300H 1.380L 1.518H 1.643L 1.808H 1.878L 1.962H 2.219L 0.800H 0.861L 1.070H 1.194L 1.291H 1.429L 1.516H 1.635L 1.768H 1.877L 2.006H 2.141L 0.792H 1.067L 1.436H 1.901L 0.678H 1.612L 1.566H 1.612L 1.675H 1.837L 1.829H 1.385L Air
the light reflection performance of the narrow-band reflective film was simulated by using the Essential Macleod film system design software, and the simulation results are shown in fig. 10 and table 1.
Example 6
Simulation experiment data:
an antireflection layer and a reflection film system (formed by alternately overlapping a high refractive index material layer and a low refractive index material layer) are arranged on a PET layer with the thickness of 0.05mm, wherein the central wavelength of incident light is set to be 532nm, the high refractive index material layer is a titanium dioxide layer with the refractive index of 2.354, the low refractive index material layer is a silicon dioxide layer with the refractive index of 1.46, the antireflection layer is composed of the titanium dioxide layer with the optical thickness of lambda/4 and the silicon dioxide layer, and the optical thickness coefficient of the reflection film system is designed as follows:
0.216H 1.836L 0.303H 1.691L 0.377H 1.591L 0.561H 1.501L 0.583H 1.422L 0.677H 1.358L 0.762H 1.259L 0.851H 1.192L 0.102H 1.102L 1.010H 1.020L 1.106H 0.921L 1.184H 0.886L 1.255H 0.767L 1.346H 0.714L 1.444H 0.634L 1.552H 0.564L 1.625H 0.432L 1.680H 0.416L 1.755H 0.396L 1.902H 0.233L 3.280H 0.905L, wherein the optical thickness coefficient of the high index material layer increases in accordance with the upper right-half chord of the cosine waveform and the optical thickness coefficient of the low index material layer decreases in accordance with the upper left-half chord of the cosine waveform.
The light reflection performance of the narrow-band reflective film was simulated by using the Essential mechanical film system design software, and the simulation results are shown in fig. 11 and table 1.
Comparative example 1
An antireflection layer and a reflection film system (formed by alternately overlapping a high refractive index material layer and a low refractive index material layer) are arranged on a PET layer with the thickness of 0.05mm, wherein the central wavelength of incident light is set to 520nm, the high refractive index material layer is a titanium dioxide layer with the refractive index of 2.354, the low refractive index material layer is a silicon dioxide layer with the refractive index of 1.46, the antireflection layer is composed of the titanium dioxide layer with the optical thickness of lambda/4 and the silicon dioxide layer, and the optical thickness coefficient of the reflection film system is designed as follows:
0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L。
the light reflection performance of the narrow-band reflective film was simulated by using the Essential Macleod film system design software, and the simulation results are shown in fig. 12 and table 1.
Comparative example 2
An antireflection layer and a reflection film system (formed by alternately overlapping a high refractive index material layer and a low refractive index material layer) are arranged on a PET layer with the thickness of 0.05mm, wherein the central wavelength of incident light is set to 520nm, the high refractive index material layer is a titanium dioxide layer with the refractive index of 2.354, the low refractive index material layer is a silicon dioxide layer with the refractive index of 1.46, the antireflection layer is composed of the titanium dioxide layer with the optical thickness of lambda/4 and the silicon dioxide layer, and the optical thickness coefficient of the reflection film system is designed as follows:
0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L 0.377H 1.591L。
the light reflection performance of the narrow-band reflective film was simulated by using the Essential Macleod film system design software, and the simulation results are shown in FIG. 13 and Table 1
TABLE 1
Figure GDA0001538275990000121
As can be seen from the results of fig. 5 to 13, the present application implements an ideal narrow-band reflection effect by controlling the change of the optical thickness of the high refractive index material layer and the low refractive index material layer to change according to the cosine waveform rule, wherein the overlapping of the two half-film stacks in embodiments 1 and 2 increases the cut-off depth of the repeated cut-off wavelength of the two half-film stacks, and the non-repeated portions are filled, thereby implementing the narrow-band reflection of the repeated portions.
Moreover, as can be seen from the data in table 1, the simulation data in example 1 has better consistency with the experimental actual data in example 2, and it can be found from the comparison between example 1 and example 6 that increasing the number of layers of the high refractive index material layer and the low refractive index material layer is beneficial to increasing the reflectivity and reducing the bandwidth of the reflection peak, the color is sharper, and the reflected color effect is more prominent.
In addition, the inventor of the present application further performs different chromaticity detection on the narrow-band reflective film of example 2, and finds that, at a chromaticity of 0 °, the reflective film presents a gem green color, has a sharp color, has an effect similar to a green quantum dot, has a pure color, has a metallic texture, and has no whitening phenomenon, and at a chromaticity of 45 °, a narrow peak of the narrow-band reflective film is shifted to the left, and becomes a weak cyan color, and infrared light is added, and the whole color becomes metallic red, which indicates that the narrow-band reflective film of the present application has a good color change characteristic. The reflective films of comparative examples 1 and 2 had no discoloration and sharp chromaticity.
According to the verification of the test, the reflection peak of the paper bag reflection film has a narrow bandwidth and a high reflectivity, so that the reflected color is sharper, the color effect is particularly vivid, and the display effect is more prominent when the reflection peak is applied to the intelligent show window system.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the projection device is installed on external equipment such as a ceiling, a wall and the like to project images to the show window layer, and is flexible to install. The display film is arranged on the inner wall of the cabinet window layer, and the display film and the projection device are respectively and electrically connected with the controller. The staff opens projection arrangement, makes it to the projection on cabinet window layer and the display film, and at this moment, the light that projection arrangement was thrown is reflected and responded to narrowband reflection film, shows corresponding image information, and the whole process need not extra backlight to make projection image color and shape truer, and the energy has been practiced thrift.
The narrow-band reflective film reflects light projected by the projection device and responds to the light to display corresponding image information, an extra backlight source is not needed, dynamic display of commodities can be achieved, a fresh and visual commodity display effect is brought to consumers, the structure is simple, the installation is convenient, display advertisements of the commodities are easy to replace, and the narrow-band reflective film is suitable for convenience stores, supermarkets, department stores, shops and the like.
And based on the narrow-band reflection property of the narrow-band reflection film, the reflected effect is sharp in color and presents metal texture. The image of the projection device reflected by the narrow-band reflecting film is clearer and the image quality is more vivid when the narrow-band reflecting film is combined with the intelligent show window system.
It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (28)

1. An intelligent shop window system, comprising:
a cabinet window layer (10);
a projection device (20);
display film (30), display film (30) includes narrowband reflective film (32), narrowband reflective film (32) set up on the cabinet window layer (10) inner wall, narrowband reflective film (32) are used for reflecting the light that projection device (20) throws in order to show the image corresponding with the image that projection device (20) throws, narrowband reflective film (32) include the reflective film system, the reflective film system sets up on the cabinet window layer (10) inner wall, the reflective film system includes n superpose high low refractive index material unit, each high low refractive index material unit includes a high refractive index material layer (321) and one low refractive index material layer (322) of mating with it, the reflective film system includes that at least one membrane system structure is [ [ alpha ] ] quick-witted1Hβ1Lα2Hβ2L...αmHβmL) -film stack (320), wherein H represents a high refractive index material layer (321), L represents a low refractive index material layer (322), n and m are positive integers, n is more than 3 and less than or equal to 150, m is more than 3 and less than or equal to 50, m is less than or equal to n, and alpha in the same film stack (320)1，α2，...，αmAnd betam，...，β2，β1Independently satisfy the same cosine waveform or sine waveformThe same gradient rule of (1); for the ith said high and low refractive index material unit αiHβiL，1≤i≤n,αiDenotes that the optical thickness of the ith high refractive index material layer (321) in the direction perpendicular to the window layer (10) is a multiple of lambda/4, betaiRepresents the optical thickness of the ith low refractive index material layer (322) in a direction perpendicular to the window layer (10) by a multiple of lambda/4, lambda being the monitoring wavelength of the film stack;
a controller (40), the projection device (20) being electrically connected with the controller (40),
wherein for the ith high-low refractive index material unit alpha in the same film stack (320)iHβiL, the optical thickness of the high refractive index material layer (321) is alphai*λ/4, the optical thickness of the low refractive index material layer (322) being βi*λ/4, the refractive index of the high refractive index material layer (321) is NHThe physical thickness of the high refractive index material layer (321) is DHThen N is presentH*DH＝αi*Lambda/4; the low refractive index material layer (322) has a refractive index NLThe low refractive index material layer (322) has a physical thickness DLThen N is presentL*DL＝βi*Lambda/4; wherein alpha is1，α2，...，αmAnd betam，...，β2，β1The sine wave and cosine wave form can independently satisfy the same gradient law on the upper left half chord, the lower left half chord, the upper right half chord and the lower right half chord of the same sine wave form or cosine wave form in the range of 0-2 pi.
2. The smart show window system of claim 1, wherein the narrowband reflective film is alpha at a monitoring wavelength of 455nmi，βiThe value range of (A) is as follows: alpha is more than or equal to 0.01i≤3.2，0.01≤βi≤3.2。
3. The smart show window system of claim 1, wherein the narrowband reflective film is alpha at a monitoring wavelength of 455nmi，βiThe value range of (A) is as follows: 0.05≤αi≤2.8，0.05≤βi≤2.8。
4. the smart show window system of claim 1, wherein the narrowband reflective film is alpha at a monitoring wavelength of 455nmi，βiThe value range of (A) is as follows: alpha is more than or equal to 0.1i≤2.8，0.1≤βi≤2.8。
5. The smart show window system of claim 1, wherein the narrowband reflective film is alpha at a monitoring wavelength of 455nmi，βiThe value range of (A) is as follows: alpha is more than or equal to 0.2i≤2.7，0.2≤βi≤2.7。
6. Intelligent shop window system according to any one of claims 1 to 5, wherein the number of high and low refractive index material units of the film stack (320) is 60-99% of the total number of high and low refractive index material units of the reflective film train.
7. The smart shop window system according to any one of claims 1 to 5, wherein the layer of high refractive index material (321) has a physical thickness of 1-400 nm.
8. The smart shop window system according to any one of claims 1 to 5, wherein the layer of high refractive index material (321) has a physical thickness of 10-150 nm.
9. The smart shop window system according to any one of claims 1 to 5, wherein the low refractive index material layer (322) has a physical thickness of 1-400 nm.
10. The smart shop window system according to any one of claims 1 to 5, wherein the low refractive index material layer (322) has a physical thickness of 10-150 nm.
11. The smart shop window system according to any one of claims 1 to 5, wherein the high refractive index material layer (321) has a refractive index of 1.5-5.0 and the low refractive index material layer (322) has a refractive index of 1.1-1.5.
12. The smart shop window system according to any one of claims 1 to 5, wherein the high refractive index material layer (321) has a refractive index of 1.65-3.0.
13. The smart shop window system according to any one of claims 1 to 5, wherein the low refractive index material layer (322) has a refractive index of 1.25-1.48.
14. The smart shop window system according to any one of claims 1 to 5, wherein the refractive index materials forming the high refractive index material layer (321) and the low refractive index material layer (322) are each independently selected from MgF2、CaF2Transition metal fluoride, ZnO, TiO2、TiN、In2O3、SnO3、Cr2O3、ZrO2、Ta2O5、LaB6、NbO、Nb2O3、Nb2O5、SiO2、SiC、Si3N4、Al2O3And a fluorine-containing resin or a hollow silica-containing resin.
15. The smart shop window system according to any one of claims 1 to 5, wherein the total number of layers of high refractive index material layer (321) and low refractive index material layer (322) is 12-60.
16. The smart shop window system according to any one of claims 1 to 5, wherein the high and low refractive index material units have an optical admittance A greater than 1.5 or 1 < A < 1.2, and the narrow-band reflective film is capable of reflecting light in the 380-1200 nm range of wavelengths over a width range of 20-50 nm.
17. The smart shop window system according to any one of claims 1 to 5, wherein the reflective film train further comprises a transparent substrate layer (310), the high and low refractive index material units being superimposed on one or both opposing surfaces of the transparent substrate layer (310).
18. The smart shop window system according to any one of claims 1 to 5, wherein the reflective film train further comprises one or more first adhesive layers (323), through which first adhesive layers (323) partially adjacent film stacks (320) are adhered.
19. The smart shop window system according to claim 18, wherein the first adhesive layer (323) is an OCA glue layer or a PSA glue layer.
20. The smart shop window system according to claim 18, wherein the first adhesive layer (323) has a thickness of 0.005-0.2 mm.
21. The smart shop window system according to any one of claims 1 to 5, wherein the display film (30) further comprises:
the transparent touch control induction film (31) is arranged on the inner wall of the cabinet window layer (10), the narrow-band reflection film (32) is arranged on one side, away from the cabinet window layer (10), of the transparent touch control induction film (31), and the transparent touch control induction film (31) is electrically connected with the controller (40) and used for inducing touch information of a user;
a second adhesive layer (33) disposed on a surface of the narrow-band reflective film (32) on a side away from the transparent touch sensing film (31);
a moisture barrier film (34) disposed on a side surface of the second adhesive layer (33) remote from the narrow band reflective film (32).
22. The smart shop window system according to claim 21, wherein the display film (30) further comprises a scratch-resistant protective film layer (35), the scratch-resistant protective film layer (35) being affixed to a side of the moisture barrier film (34) remote from the shop window layer (10).
23. Smart showcase system according to claim 22, wherein said scratch-resistant protective film layer (35) is a PET layer, a PC layer, a PVC layer or a PP layer.
24. The smart shop window system according to claim 22, wherein the scratch resistant protective film layer (35) has a thickness of 40-200 μm.
25. The intelligent shop window system according to claim 21, wherein the transparent touch sensitive film (31) has a thickness of 100-300 μm.
26. The smart shop window system according to claim 21, wherein the moisture barrier film (34) has a thickness of 3-10 μm.
27. The smart shop window system according to claim 21, wherein the display film (30) is glued on the shop window layer (10) by means of a transparent mounting glue.
28. The intelligent shop window system according to claim 27, wherein the transparent mounting glue forms a glue layer, the glue layer having a thickness of 10-20 μ ι η.
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