CN104614790A - Dynamic amplifying optical film of flat Fresnel lens array - Google Patents
Dynamic amplifying optical film of flat Fresnel lens array Download PDFInfo
- Publication number
- CN104614790A CN104614790A CN201510094589.0A CN201510094589A CN104614790A CN 104614790 A CN104614790 A CN 104614790A CN 201510094589 A CN201510094589 A CN 201510094589A CN 104614790 A CN104614790 A CN 104614790A
- Authority
- CN
- China
- Prior art keywords
- layer
- fresnel lens
- lens array
- fresnel
- micrographics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/002—Magnifying glasses
- G02B25/008—Magnifying glasses comprising two or more lenses
Abstract
The invention discloses a dynamic amplifying optical film of a flat Fresnel lens array. The optical film comprises a substrate layer, a plurality of Fresnel lens array layers positioned above the substrate layer, and a plurality of micro-pattern layers positioned below the substrate, wherein each Fresnel lens array layer consists of a plurality of Fresnel lenses which are arranged in an array; the distance between the Fresnel lens array layers and the micro-pattern layers is the focus distance of each Fresnel lens. According to the dynamic amplifying optical film disclosed by the invention, patterns in the micro-pattern layers are amplified and reproduced because of the imaging effect of the Fresnel lenses; the reproduced and amplified image has a dynamic three-dimensional effect.
Description
Technical field
The present invention relates to optical anti-counterfeiting and dynamic security technical field of membrane, particularly relate to a kind of planar Fresnel lens arra and dynamically amplify blooming, can be applicable to banknote, card, security, secure file etc. and there is the optical anti-counterfeiting of brand product of high added value.
Background technology
Techniques of Optical Security has significant visual identity, and is easy to be identified by the public, is widely used in brand product, important safety file, card security etc. and relates to the field such as economic interests and public safety.Laser Holographic Counterfeit-proof Technique was once that the internationally recognized anti-counterfeiting technology with development prospect serves important anti-fake effect really, but popularizing along with technology, a lot of producer all has the ability of producing and using this technology, and its antiforge function is reduced.
The another kind of Techniques of Optical Security amplified based on More enters the visual field of researcher and the public, microlens array and micrographics array combine by More's amplifying technique, according to different arrangement modes, the stereoeffects such as micrographics amplification, movement, floating and sinking can be produced.US Patent No. 5612731 utilizes dimpling lens arra to be combined with micrographics array and obtains strip safety element.The bore of the microlens array used is at 50-250 μm, and focal length is generally 200 μm, and this design configurations is unfavorable for making ultrathin optics dynamic anti-fake film.For the high-end anti-fake product such as banknote, security, require that the thickness of the dynamic anti-fake film being used as opened window safety line is little as far as possible, generally, the thickness of safety diaphragm is less than 50 μm.U.S. Patent application 2008/0037131Al has expanded More and has amplified false proof range of application, for making the ultra-thin dynamic anti-fake film (thickness is less than 50 μm) of applicable card and banknote application, microlens array bore is contracted to 20-30 μm, and focal length is less than 50 μm.And micrographics array layer and micro-lens arrays layer can have arrangement mode complicated and changeable, realize abundanter dynamic display of functional.On optical amplifier and display effect, Chinese patent CN201010180251.4 discloses the dimpling lens arra of stochastic distribution, in conjunction with this array micrographics array one to one, realize only having in the two overlapping region one to amplify figure.Lenticule caliber size is 25 to 100 μm, and space layer can be less than 30 μm.
The dynamic security film that above document proposes is all based on refractive microlens array, and refractive microlens array is combined with micrographics and produces certain amplification and the optical effect such as dynamic.But microlens array has rise, the effect of optical amplifier can be changed at microlens array printed thereon.Therefore, this structure is not easily directly combined with printing technology, and being difficult to provides more color scheme to realize more being imbued with the figure of visible change.
For traditional safety diaphragm utilizing refractive lenses array, require that microlens array structure exists the different border of refractive index, the interface of such as air and lens arra.When microlens array exposes in atmosphere, when protective seam, easily cause the damage of safety diaphragm, its serviceable life is shortened.
The microlens array that Chinese patent application 200510086954.X discloses Fresnel flap-type makes flat magnifier for microfilm of characters, but must with the microfilm of characters of corresponding array or pattern with the use of.
Chinese patent application 200810186575.1 discloses the enlarged image that a kind of planar diffraction type fresnel lens array reproduces miniature pattern array.But its Fresnel chip arrays adopts printing, ink-jet, the mode such as partially metallised to make, and by process technology limit, zone plate edge is difficult to accomplish micron dimension, more impossible nanometer scale of accomplishing, so, the Fresnel chip arrays of short focus is difficult to realization.Adopt printing, ink-jet, the mode such as partially metallised is very difficult that Fresnel Lenses bore is accomplished less than 100 microns.
Existing dynamic optical amplifies the upper surface microlens array bore of film from 25 μm to 200 μm, and in order to obtain short focus, lenticular numerical aperture is comparatively large, and microlens array has certain rise.The rise of microlens array makes can not at microlens array surface directly printing-ink, otherwise at printing zone, rise part is filled and led up by ink, and like this, the amplification effect of dynamic optical film will disappear.Meanwhile, be limited by process technology limit, short focus microlens array makes very difficult, the such as microlens array of 25 μm of bores, and focal length the shortest is in theory 25 μm, and reality can accomplish 28 μm technique.Consider micrographics layer and wall, the thickness of dynamic optical amplification film is minimum can reach about 35 μm, unless lenticule bore reduces, otherwise the thickness that dynamic optical amplifies film is difficult to reduce further.
For obtaining ultrathin Planar integration imaging dynamic security film, the new method reducing lenticule focal length just must be found.Also to consider the direct printing-ink image on the surface of microlens array, to improve the display effect of dynamically amplifying optical thin film simultaneously.And make surface structure not by the impact of printing-ink, this is the key issue that the present invention needs to solve.
Therefore, for above-mentioned technical matters, be necessary to provide a kind of planar Fresnel lens arra dynamically to amplify blooming.
Summary of the invention
In view of this, in order to solve described the problems of the prior art, the invention provides a kind of planar Fresnel lens arra and dynamically amplify blooming, there is substrate layer, fresnel lens array layer and micrographics layer, micrographics layer is positioned near the focal plane of fresnel lens array layer, by the imaging effect of Fresnel Lenses, the pattern visual evoked potentials in micrographics layer is reproduced, and the intensified image reproduced have the effect of dynamic solid.
To achieve these goals, the technical scheme that provides of the embodiment of the present invention is as follows:
A kind of planar Fresnel lens arra dynamically amplifies blooming, some micrographics layers that described blooming comprises substrate layer, is positioned at the some fresnel lens array layers above substrate layer and is positioned at below substrate layer, the Fresnel Lenses that wherein said fresnel lens array layer is arranged by some arrays forms, and the distance of described fresnel lens array layer and micrographics layer is the focal length of Fresnel Lenses.
As a further improvement on the present invention, described Fresnel Lenses comprise set gradually along optical axis the first fourier transform lens, Fresnel phase part, the second fourier transform lens, output face and miniature optical system, by the first fourier transform lens, Fresnel phase part and the second fourier transform lens, output face is formed the optical field distribution of the Fresnel Lenses of different focal, through follow-up miniature optical system, obtain fresnel lens array.
As a further improvement on the present invention, the thickness that described planar Fresnel lens arra dynamically amplifies blooming is more than or equal to 20 μm, and the thickness of array of fresnel lenses layer is 200nm-1 μm.
As a further improvement on the present invention, the thickness of described substrate layer is 10 μm-500 μm.
As a further improvement on the present invention, in described micrographics layer, the characteristic dimension of micrographics is more than or equal to 1 μm, and the gash depth of micrographics is 1 μm-5 μm.
As a further improvement on the present invention, in described micrographics layer, the characteristic dimension of micrographics is 2 μm-5 μm.
As a further improvement on the present invention, in described fresnel lens array layer, the empty scope frequently of the edge of Fresnel phase part be 50 lines right/mm-10 line is right/mm, the numerical aperture of objective NA>0.45 of miniature optical system, doubly, visual field is 2mm to miniature multiple >20.
As a further improvement on the present invention, the outside evaporation of described fresnel lens array layer has high refractive index medium layer, and the refractive index of described high refractive index medium layer is more than or equal to 2.0.
As a further improvement on the present invention, the ink of the zones of different coating different colours of described fresnel lens array layer, in the zones of different of fresnel lens array layer, the focal length of Fresnel Lenses is different.
As a further improvement on the present invention, described substrate layer comprises the first substrate layer and the second substrate layer that set gradually from the top down, described fresnel lens array layer comprises and is positioned at the first fresnel lens array layer on the first substrate layer and the second fresnel lens array layer, and described micrographics layer comprises the first micrographics layer be positioned at below the first substrate layer and the second micrographics layer be positioned at below the second substrate layer.
As a further improvement on the present invention, in described first fresnel lens array layer, the focal length of Fresnel Lenses is the distance of the first fresnel lens array layer and the first micrographics layer, and in the second fresnel lens array layer, the focal length of Fresnel Lenses is the distance of the second fresnel lens array layer and the second micrographics layer.
The present invention has following beneficial effect:
Fresnel lens array has more short focus, and be conducive to realizing thinner dynamic optical and amplify film, the present invention is greater than in 0.45 pair of heart interference between projections optical system far away in numerical aperture, can realize the fresnel lens array of short focus;
Fresnel Lenses belongs to planar technology, evaporation high refractive index medium layer again on fresnel lens array layer, different from the microlens array with rise, the dynamic optical of employing fresnel lens array amplifies film, can at array layer upper surface print color figure, color as transparent in printing-ink, the impact that Nonlinear magnify effect is not printed substantially;
The fresnel lens array of zones of different can have different focal to distribute, and can realize magnification difference or more dynamic image amplification effect;
Dynamically amplifying on the micrographics layer of blooming, micrographics color is different from the color of surface printing, can form the motion graphics effect of two kinds of different color combination;
The Fill Color of micrographics layer is pure color, and the dispersion of such fresnel lens array layer can reduce, can not effect diagram picture display amplification effect, improving image definition.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation dynamically amplifying blooming in the embodiment of the present invention one;
Fig. 2 is the preparation principle figure of Fresnel Lenses in the embodiment of the present invention one;
Fig. 3 is the schematic diagram of fresnel lens array in the embodiment of the present invention one;
Fig. 4 is the structural representation dynamically amplifying blooming in the embodiment of the present invention two;
Fig. 5 is the structural representation dynamically amplifying blooming in the embodiment of the present invention three;
Fig. 6 is the structural representation dynamically amplifying blooming in the embodiment of the present invention four;
Fig. 7 is the schematic diagram of fresnel lens array in the embodiment of the present invention four;
Fig. 8 is the structural representation dynamically amplifying blooming in another embodiment of the present invention.
Embodiment
Describe the present invention below with reference to embodiment shown in the drawings.But these embodiments do not limit the present invention, the structure that those of ordinary skill in the art makes according to these embodiments, method or conversion functionally are all included in protection scope of the present invention.
The invention discloses a kind of planar Fresnel lens arra and dynamically amplify blooming, the some micrographics layers comprising substrate layer, be positioned at the some fresnel lens array layers above substrate layer and be positioned at below substrate layer, the Fresnel Lenses that wherein fresnel lens array layer is arranged by some arrays forms, the distance of fresnel lens array layer and micrographics layer is the focal length of Fresnel Lenses, and namely micrographics layer is positioned near the focal plane of fresnel lens array layer.By the imaging effect of nanometer Fresnel Lenses, the pattern visual evoked potentials in micrographics layer is reproduced, and the intensified image reproduced have the effect of dynamic solid.
The present invention adopts interference photoetching method to realize nanometer fresnel lens array.Make by continuous change empty frequency photoetching technique and nano impression, the lithographic equipment that this Chinese patent application that change sky photoetching technique reference frequently application number is CN201310166341.1 is continuously recorded and photoetching method.Becoming continuously in empty interference lithography system frequently, use Fresnel phase part, miniature by projection optical system, project in the object lens output face of miniature optical system at two heart far away, form the light field of Fresnel Lenses distribution.Change the position of Fresnel phase part along optical axis direction, the Fresnel Lenses focal length after adjustable photoetching, repeatedly repeated exposure, form fresnel lens array.
Usually, adopt the object lens of numerical aperture NA=0.45,20 times of miniature optical systems of projection, during incident wavelength 351nm, the edge period of the Fresnel Lenses formed on a photoresist can reach 400nm.If with the edge of Fresnel Lenses for 600nm computation of Period (corresponding empty 1600 lines frequently right/mm), when centre wavelength be 550nm visible ray parallel incident time, edge angle of diffraction in medium of Fresnel Lenses is 38 degree (maximum 42 degree).If Fresnel Lenses diameter is 25 μm, then Fresnel Lenses focal length can reach 16 μm; If Fresnel Lenses diameter is 50 μm, so, corresponding focal length is 32 μm.
In such scheme, the focusing effect of nanometer fresnel lens array is caused by diffraction effect, unavoidably there is effect of dispersion.At nanometer fresnel lens array upper surface evaporation high refractive index layer, republish different pigment, after it filters, the reflection wavelength bandwidth of white light after pigments absorbalight of irradiating is diminished, Fresnel Lenses dispersion can be reduced on the impact of amplifying figure.As in surface printing red pigment, then incident light centre wavelength is 600-650nm, and now, Fresnel Lenses focal length is 14-16 μm, and as printing blue pigment, incident light centre wavelength is 450-500nm, and corresponding Fresnel Lenses focal length is at about 22-20 μm.
In such scheme, in micrographics layer, the Fill Color of groove is generally pure color, and as blue or red ink, so the effect of dispersion of fresnel lens array can reduce, not the amplification effect of effect diagram picture.
In technique scheme, by the translation phase part in optical system and interference lithography, can realize the variable nanometer fresnel lens array of focal length, it is under wavelength 550nm, focal-distance tuning range 16 μm ~ 5mm.Technique scheme is the fresnel lens array of 25 μm for bore, its focal length 16 μm under wavelength 550nm, the thickness dynamically amplifying blooming reaches 25 μm, simultaneously, can at surface printing pigment, the figure of dynamic optical film, to promote the display effect of dynamically amplifying optical thin film.
Can have extra play at nanometer fresnel lens array skin, extra play can be high refractive index medium layer, high refractor can be printed with ink, fluorescence, magnetic, phosphorus, Selective absorber layer or have micro-nano structure layer; Extra play is transparent, and can be protective seam.
The thickness of thin film based sheet material layers is at 10 μm to 500 μm, and preferred substrate layer thickness is at 15-100 μm.Substrate layer material can be PC, PVC, PET, PMMA, ultraviolet sensitivity glue etc., is preferably PET film.
Substrate layer can be single PC, PVC, PET film etc., also can be through the multilayer film be compounded to form.
Nanometer fresnel lens array layer and micrographics layer material can be ultra-violet curing glue or be thermo-sensitive material.
Micrographics layer makes by UV nano impression or hot-press method.Impression block used can be made up of nickel, nickel cobalt (alloy) etc.The impression mode adopted can be volume to volume, roll up flat, flat equality.
Can have extra play between above-mentioned substrate layer and micrographics layer, extra play can be high refractive index medium layer, or is coated with ink, fluorescence, magnetic, phosphorus, Selective absorber or has micro-nano structure; Extra play is transparent, and can be protective seam.
In such scheme, by the corresponding region in different color-printed, the Focussing of the fresnel lens array of preparation will be needed in advance.The focal length of the Fresnel Lenses of red pigment printing zone improves, and the Fresnel array focal length of blue pigment printing zone reduces, and can ensure the consistance of the dynamic enlarged image focal length in different diffraction region.
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment one:
Ginseng Figure 1 shows that the embodiment of the present invention one midplane fresnel lens array dynamically amplifies the structural representation of blooming, comprise substrate layer 1, fresnel lens array layer 2 and micrographics layer 3, fresnel lens array layer 2 and micrographics layer 3 lay respectively at upper surface and the lower surface of substrate layer 1.
Be lithographic equipment and the photoetching method of the Chinese patent application record of CN201310166341.1 with reference to application number, as shown in Figure 2, fresnel lens array layer is standby by above-mentioned interference optical graving, the Fresnel Lenses that fresnel lens array layer is arranged by some arrays forms, Fresnel Lenses comprise set gradually along optical axis 25 the first fourier transform lens 21, Fresnel phase part 22, second fourier transform lens 23, output face 24 and miniature optical system (not shown).
Adopt Fourier transform light path, at the Fresnel of the placement below phase part 22 of the first fourier transform lens 21, Fresnel phase part 22 groove depth equals photoetching and uses wavelength, only has positive and negative first-order diffraction light, eliminates zero order light.By along optical axis 25 translation Fresnel phase part 22, output face 24 defines the optical field distribution of the Fresnel Lenses of different focal, and the miniature optical interference circuit in follow-up miniature optical system, can obtain nanometer fresnel lens array.
In the present embodiment, the parameter of Fresnel phase part 22 is as follows: the empty scope frequently of the edge of Fresnel phase part be 50 lines right/mm-10 line is right/mm.The numerical aperture of objective NA>0.45 of miniature optical system, miniature multiple >20 doubly, visual field ~ 2mm, lithographic wavelength is ultraviolet 351nm, output face maximum empty be frequently 2500 lines right/mm, the corresponding cycle is minimum be 400nm, the focal length 16 μm of the fresnel lens array of correspondence and more than.The constructional depth of nanometer array of fresnel lenses is generally 200nm-1 μm, and the thickness that nanometer fresnel lens array dynamically amplifies blooming can reach more than 20 μm or 20 μm.
In Fig. 1, the structure of Fresnel lens array layer 2 as shown in Figure 3.The arrangement mode of fresnel lens array can be the perpendicular array shown in Fig. 3, also can be cellular or other arrangement form, for by light-ray condensing in micrographics layer 3, the arrangement mode of fresnel lens array layer 2 and corresponding micrographics layer 3 can amplify as requested and sets with the effect of display.
Substrate layer 1 thickness is at 10 μm-500 μm, and preferred substrate layer thickness is at 15-100 μm.Substrate layer material can be PC, PVC, PET, PMMA, ultraviolet sensitivity glue etc., is preferably PET.
The general >1 micron of micrographics characteristic dimension of micrographics layer 3, preferred 2-5 micron, general 1 μm-5 μm of the gash depth of micrographics.
Embodiment two:
Ginseng Figure 4 shows that the embodiment of the present invention two midplane fresnel lens array dynamically amplifies the structural representation of blooming, compared with embodiment one, outside evaporation at fresnel lens array layer 2 in the present embodiment has high refractive index medium layer 4, other are all identical with embodiment one, no longer repeat at this.On high refractive index medium layer 4, directly can print various figure in the present embodiment, high refractive index medium layer 4 also can be used as the protective seam of fresnel lens array layer simultaneously.
Nanometer Fresnel Lenses belongs to planar technology, and evaporation high refractive index medium again on fresnel lens array layer, as ZnS medium, its refractive index is about 2.0.According to grating equation, if incident wavelength is 550nm, vertical incidence, then nanometer Fresnel Lenses edge period is less than 600nm.Now, the focal length of corresponding fresnel lens array is less than 20 μm.Different from the microlens array with rise, fresnel lens array is utilized to amplify film as the dynamic optical of image-forming component, directly can print various pattern on high refractive index medium layer 4, if printing ink colors is transparent, the dynamic amplification effect of image is not substantially by the impact of printing images.
Embodiment three:
At the ink of the zones of different coating different colours of fresnel lens array layer 2, can with the color combination of filling ink in micrographics layer 3.In the upper and lower surface of integration imaging blooming, micrographics color is different from the color of surface printing, can form the motion graphics effect of two kinds of different color combination.
Shown in ginseng Fig. 5, in the present embodiment, Fresnel lens array layer 2 is divided into first area 201 and second area 202, first area 201 and second area 202 print different ink, as at first area 201 brush blue-tinted transparent ink, print red, transparent ink at second area 202.Fresnel Lenses itself has effect of dispersion, and when assembling the light of different wave length, corresponding focal length is different.So can be different according to the color at fresnel lens array layer 2 zones of different printing-ink, adopt the focal length of required Fresnel Lenses.The ink that first area 201 is printed is blue, and compared to the red ink that second area 202 prints, the focal length of the nanometer Fresnel Lenses that this region is corresponding needs to reduce.Now, can ensure first area on fresnel lens array layer 2 and second area simultaneously light collection on micrographics layer 3.
Shades of colour ink can being filled in micrographics layer 3, when filling blue ink in micrographics layer 3, combining with the redness in first area 201, the color change from redness to purple can be formed.When filling green ink in micrographics layer 3, the blueness in first area 201 and green mixed display cyan, in second area 202, red and green combination then can show yellow.
Fresnel lens array layer 2 can print different colours in zones of different, and is distributed at the focal length of zones of different by adjustment Fresnel Lenses simultaneously, combines, form abundant color display effect with Fill Color in micrographics layer 3.
Embodiment four:
Ginseng Figure 6 shows that the planar Fresnel lens arra of multi-layer stereoscopic effect in the embodiment of the present invention four dynamically amplifies the structural representation of blooming, comprise substrate layer, fresnel lens array layer, and micrographics layer, substrate layer comprises the first substrate layer 11 and the second substrate layer 12 set gradually from the top down, fresnel lens array layer comprises the first fresnel lens array layer 221 and the second fresnel lens array layer 222 be positioned on the first substrate layer 11, micrographics layer comprises the first micrographics layer 31 be positioned at below the first substrate layer 11 and the second micrographics layer 32 be positioned at below the second substrate layer 12.First fresnel lens array layer 221 and the second fresnel lens array layer 222 correspond to different regions.Be illustrated in figure 7 the structural representation of fresnel lens array layer, in fresnel lens array layer, in zones of different, the focal length of fresnel lens array is different, respectively from different micrographics layers with the use of.
First fresnel lens array layer 221 focal length is shorter, for light collection is longer in the first micrographics layer 31, second fresnel lens array layer 222 focal length, for by light collection in the second micrographics layer 32.Because the first micrographics layer 31 is on the focal plane of long-focus first fresnel lens array layer 221, and the second micrographics layer 32 is not at the focal zone of the first fresnel lens array layer 221, so the first micrographics layer 13 coordinates with the first fresnel lens array layer 221 and could produce intensified image clearly, combine with the second fresnel lens array layer 222, More's amplification can not be produced.In like manner, the second micrographics layer 32 only has and combines the dynamic intensified image that could form micrographics with the second fresnel lens array layer 222.First fresnel lens array layer 221 and the second fresnel lens array layer 222 have different focal lengths, different cycles, different arrangement modes.The cycle of the first micrographics layer 31 and the second micrographics layer 32 and arrangement mode are corresponding with the first fresnel lens array layer 221 and the second fresnel lens array layer 222 respectively.
First micrographics layer 31 and the second micrographics layer 32 and the first fresnel lens array layer 221 and the second fresnel lens array layer 222 have different arrangement modes, different print colors etc. respectively, so both take different array modes in Nonlinear magnify multiplying power, color of image, floating, sinking and moving direction etc., can be observed to have the dynamic amplification figure enriching effect under different visual angles.
Further; the various embodiments described above can have microlens array protective seam 21 ', extra play 22 ' and 23 ' and micro-nano structure protective seam 24 ', adhesive linkage 25 ' respectively outside fresnel lens array layer 2, between substrate layer 1 and fresnel lens array layer 2, between substrate layer 1 and micrographics layer 3 and outside micrographics layer 3, as shown in Figure 8.Extra play 22 ', 23 ' and microlens array protective seam 21 ', micro-nano structure protective seam 24 ' can be dielectric layer, metal level, or be coated with ink, fluorescence, magnetic, phosphorus, Selective absorber or there is micro-nano structure; In the various embodiments described above, micrographics can be the combination of various forms of word, image or character image; The change of the Fresnel focal length of lens, the change of coating printing ink color and change with micrographics arrangement form and color in the various embodiments described above, can independent assortment, and realization has the safe blooming of ultrathin planar Fresnel lens arra integration imaging enriching dynamic effect.
As can be seen from the above technical solutions, the present invention has following beneficial effect:
Fresnel lens array has more short focus, and be conducive to realizing thinner dynamic optical and amplify film, the present invention is greater than in 0.45 pair of heart interference between projections optical system far away in numerical aperture, can realize the fresnel lens array of short focus;
Fresnel Lenses belongs to planar technology, evaporation high refractive index medium layer again on fresnel lens array layer, different from the microlens array with rise, the dynamic optical of fresnel lens array is adopted to amplify film, can at array layer upper surface print color figure, color as transparent in printing-ink, the impact that Nonlinear magnify effect is not printed substantially;
The fresnel lens array of zones of different can have different focal to distribute, and can realize magnification difference or more dynamic image amplification effect;
Dynamically amplifying on the micrographics layer of blooming, micrographics color is different from the color of surface printing, can form the motion graphics effect of two kinds of different color combination;
The Fill Color of micrographics layer is pure color, and the dispersion of fresnel lens array layer can reduce, can not effect diagram picture display amplification effect, improving image definition.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (11)
1. a planar Fresnel lens arra dynamically amplifies blooming, it is characterized in that, some micrographics layers that described blooming comprises substrate layer, is positioned at the some fresnel lens array layers above substrate layer and is positioned at below substrate layer, the Fresnel Lenses that wherein said fresnel lens array layer is arranged by some arrays forms, and the distance of described fresnel lens array layer and micrographics layer is the focal length of Fresnel Lenses.
2. planar Fresnel lens arra according to claim 1 dynamically amplifies blooming, it is characterized in that, described Fresnel Lenses comprise set gradually along optical axis the first fourier transform lens, Fresnel phase part, the second fourier transform lens, output face and miniature optical system, by the first fourier transform lens, Fresnel phase part and the second fourier transform lens, output face is formed the optical field distribution of the Fresnel Lenses of different focal, through follow-up miniature optical system, obtain fresnel lens array.
3. planar Fresnel lens arra according to claim 1 dynamically amplifies blooming, it is characterized in that, the thickness that described planar Fresnel lens arra dynamically amplifies blooming is more than or equal to 20 μm, and the thickness of array of fresnel lenses layer is 200nm-1 μm.
4. planar Fresnel lens arra according to claim 1 dynamically amplifies blooming, it is characterized in that, the thickness of described substrate layer is 10 μm-500 μm.
5. planar Fresnel lens arra according to claim 1 dynamically amplifies blooming, it is characterized in that, in described micrographics layer, the characteristic dimension of micrographics is more than or equal to 1 μm, and the gash depth of micrographics is 1 μm-5 μm.
6. planar Fresnel lens arra according to claim 5 dynamically amplifies blooming, it is characterized in that, in described micrographics layer, the characteristic dimension of micrographics is 2 μm-5 μm.
7. planar Fresnel lens arra according to claim 2 dynamically amplifies blooming, it is characterized in that, in described fresnel lens array layer, the empty scope frequently of the edge of Fresnel phase part be 50 lines right/mm-10 line is right/mm, the numerical aperture of objective NA>0.45 of miniature optical system, doubly, visual field is 2mm to miniature multiple >20.
8. planar Fresnel lens arra according to claim 1 dynamically amplifies blooming, it is characterized in that, the outside evaporation of described fresnel lens array layer has high refractive index medium layer, and the refractive index of described high refractive index medium layer is more than or equal to 2.0.
9. planar Fresnel lens arra according to claim 1 dynamically amplifies blooming, it is characterized in that, the ink of the zones of different coating different colours of described fresnel lens array layer, in the zones of different of fresnel lens array layer, the focal length of Fresnel Lenses is different.
10. planar Fresnel lens arra according to claim 1 dynamically amplifies blooming, it is characterized in that, described substrate layer comprises the first substrate layer and the second substrate layer that set gradually from the top down, described fresnel lens array layer comprises and is positioned at the first fresnel lens array layer on the first substrate layer and the second fresnel lens array layer, and described micrographics layer comprises the first micrographics layer be positioned at below the first substrate layer and the second micrographics layer be positioned at below the second substrate layer.
11. planar Fresnel lens arras according to claim 10 dynamically amplify blooming, it is characterized in that, in described first fresnel lens array layer, the focal length of Fresnel Lenses is the distance of the first fresnel lens array layer and the first micrographics layer, and in the second fresnel lens array layer, the focal length of Fresnel Lenses is the distance of the second fresnel lens array layer and the second micrographics layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094589.0A CN104614790B (en) | 2015-03-03 | 2015-03-03 | Planar Fresnel lens arra dynamically amplifies blooming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094589.0A CN104614790B (en) | 2015-03-03 | 2015-03-03 | Planar Fresnel lens arra dynamically amplifies blooming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104614790A true CN104614790A (en) | 2015-05-13 |
| CN104614790B CN104614790B (en) | 2016-06-22 |
Family
ID=53149319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510094589.0A Active CN104614790B (en) | 2015-03-03 | 2015-03-03 | Planar Fresnel lens arra dynamically amplifies blooming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104614790B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965254A (en) * | 2015-07-30 | 2015-10-07 | 上海宏盾防伪材料有限公司 | Dynamic 3D holographic element and manufacturing method therefor |
| CN106271088A (en) * | 2016-08-25 | 2017-01-04 | 南开大学 | A kind of Fresnel zone plate array making method based on femtosecond laser and application |
| CN109870821A (en) * | 2019-04-03 | 2019-06-11 | 冯煜 | A kind of focusing structure and the method for realizing naked eye 3D display |
| CN110333606A (en) * | 2019-05-06 | 2019-10-15 | 苏州大学 | A kind of optical imaging film based on micro- concentrating element |
| CN110789456A (en) * | 2019-10-23 | 2020-02-14 | 苏州大学 | Ultra-large visual angle automobile rearview mirror film and method for expanding visual angle of rearview mirror |
| CN111619262A (en) * | 2019-02-28 | 2020-09-04 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and anti-counterfeiting product |
| CN112859214A (en) * | 2021-02-22 | 2021-05-28 | 汪强 | Roller shutter type Fresnel lens array and light guide energy gathering system |
| CN114428391A (en) * | 2020-10-29 | 2022-05-03 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and anti-counterfeiting product comprising same |
| CN114708787A (en) * | 2022-03-14 | 2022-07-05 | 武汉华工图像技术开发有限公司 | 3D anti-counterfeiting film, manufacturing method of 3D anti-counterfeiting film and 3D anti-counterfeiting label |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2397806C (en) * | 2000-01-21 | 2009-05-05 | Flex Products, Inc. | Optically variable security devices |
| CN101434176A (en) * | 2008-12-25 | 2009-05-20 | 中国印钞造币总公司 | Optical anti-counterfeiting element and product with the same |
| KR20090066826A (en) * | 2007-12-20 | 2009-06-24 | 한국조폐공사 | A security film including diffractive lens array and a security document using thereof |
| CN101767511A (en) * | 2010-01-12 | 2010-07-07 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting component and product with anti-counterfeiting component |
| CN102869518A (en) * | 2010-03-01 | 2013-01-09 | 德拉鲁国际有限公司 | Moire magnification device |
| AU2007295876B2 (en) * | 2006-09-15 | 2013-09-19 | Ccl Secure Pty Ltd | Radiation curable embossed ink security devices for security documents. |
| CN104191860A (en) * | 2014-08-27 | 2014-12-10 | 苏州大学 | Colored dynamic three-dimensional moire image thin film based on micro printing and preparation method thereof |
-
2015
- 2015-03-03 CN CN201510094589.0A patent/CN104614790B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2397806C (en) * | 2000-01-21 | 2009-05-05 | Flex Products, Inc. | Optically variable security devices |
| AU2007295876B2 (en) * | 2006-09-15 | 2013-09-19 | Ccl Secure Pty Ltd | Radiation curable embossed ink security devices for security documents. |
| KR20090066826A (en) * | 2007-12-20 | 2009-06-24 | 한국조폐공사 | A security film including diffractive lens array and a security document using thereof |
| CN101434176A (en) * | 2008-12-25 | 2009-05-20 | 中国印钞造币总公司 | Optical anti-counterfeiting element and product with the same |
| CN101767511A (en) * | 2010-01-12 | 2010-07-07 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting component and product with anti-counterfeiting component |
| CN102869518A (en) * | 2010-03-01 | 2013-01-09 | 德拉鲁国际有限公司 | Moire magnification device |
| CN104191860A (en) * | 2014-08-27 | 2014-12-10 | 苏州大学 | Colored dynamic three-dimensional moire image thin film based on micro printing and preparation method thereof |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965254A (en) * | 2015-07-30 | 2015-10-07 | 上海宏盾防伪材料有限公司 | Dynamic 3D holographic element and manufacturing method therefor |
| CN106271088A (en) * | 2016-08-25 | 2017-01-04 | 南开大学 | A kind of Fresnel zone plate array making method based on femtosecond laser and application |
| CN111619262A (en) * | 2019-02-28 | 2020-09-04 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and anti-counterfeiting product |
| CN111619262B (en) * | 2019-02-28 | 2021-05-11 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and anti-counterfeiting product |
| CN109870821A (en) * | 2019-04-03 | 2019-06-11 | 冯煜 | A kind of focusing structure and the method for realizing naked eye 3D display |
| CN110333606A (en) * | 2019-05-06 | 2019-10-15 | 苏州大学 | A kind of optical imaging film based on micro- concentrating element |
| CN110789456A (en) * | 2019-10-23 | 2020-02-14 | 苏州大学 | Ultra-large visual angle automobile rearview mirror film and method for expanding visual angle of rearview mirror |
| CN114428391A (en) * | 2020-10-29 | 2022-05-03 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and anti-counterfeiting product comprising same |
| WO2022088815A1 (en) * | 2020-10-29 | 2022-05-05 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and anti-counterfeiting product comprising optical anti-counterfeiting element |
| CN114428391B (en) * | 2020-10-29 | 2023-06-02 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and anti-counterfeiting product comprising same |
| CN112859214A (en) * | 2021-02-22 | 2021-05-28 | 汪强 | Roller shutter type Fresnel lens array and light guide energy gathering system |
| CN114708787A (en) * | 2022-03-14 | 2022-07-05 | 武汉华工图像技术开发有限公司 | 3D anti-counterfeiting film, manufacturing method of 3D anti-counterfeiting film and 3D anti-counterfeiting label |
| CN114708787B (en) * | 2022-03-14 | 2023-10-03 | 武汉华工图像技术开发有限公司 | 3D anti-counterfeiting film, manufacturing method of 3D anti-counterfeiting film and 3D anti-counterfeiting label |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104614790B (en) | 2016-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104614790B (en) | Planar Fresnel lens arra dynamically amplifies blooming | |
| CN104191860B (en) | Colored dynamic solid moir é pattern thin film based on micro-printing and preparation method thereof | |
| CN104118236B (en) | The micro-reflecting element array optical Security element of a kind of focusing and valuables | |
| CN102844198B (en) | Moire magnification device | |
| AU2007211654C1 (en) | Multilayer body with microlens arrangement | |
| CN108367586B (en) | Security element with lenticular image | |
| CN206147130U (en) | Cellular dimpling grating | |
| CN106324726B (en) | 3D imaging optical film | |
| CN105636798A (en) | Security device and method of manufacture | |
| CN104981356A (en) | Colored, dynamic, and amplified safety film | |
| CN103358808A (en) | Optical anti-fake element and products utilizing same | |
| CN104023991A (en) | Optically variable security element | |
| CN105313529A (en) | Optical anti-counterfeiting element and anti-counterfeiting product using same | |
| JP2013541435A (en) | Multiple optical variable device | |
| CN206804900U (en) | A kind of picture structure imaging device | |
| CN106228901B (en) | Anti-counterfeiting structure, anti-counterfeiting product and manufacturing method thereof | |
| CN108883654A (en) | Micro-optic device with double sided optical effect | |
| CN105882182A (en) | Method for carrying out three-dimensional printing by utilizing round-dot optical grating | |
| CN109285439A (en) | A kind of graphic anti-counterfeiting structure and preparation method thereof based on microlens array | |
| AU2023216780A1 (en) | Optical anti-counterfeiting element and anti-counterfeiting product | |
| KR20080105704A (en) | A 3-dimensional image sheet structure and manufacturing method thereof | |
| CN111572235A (en) | Hidden stereoscopic imaging film | |
| CN206075715U (en) | It is a kind of to write comments on a document transparent membrane and antifake certificate card containing multiple diffraction graph layer | |
| CN110744941B (en) | Method for forming continuous true-tone color image | |
| CN104978896A (en) | Monolayer embossing pattern microstructural anti-counterfeiting mark |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180726 Address after: 215000 Xinchang Road, Suzhou Industrial Park, Jiangsu Province, No. 68 Co-patentee after: JIANGSU WEIGE NEW MATERIAL SCIENCE & TECHNOLOGY CO., LTD. Patentee after: SVG Optronics, Co., Ltd. Address before: 215123 Zhongnan street, Suzhou Industrial Park, Suzhou, Jiangsu, 478 Patentee before: SVG Optronics, Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215000 Xinchang Road, Suzhou Industrial Park, Jiangsu, 68 Co-patentee after: JIANGSU WEIGE NEW MATERIAL SCIENCE & TECHNOLOGY Co.,Ltd. Patentee after: SUZHOU SUDAVIG SCIENCE AND TECHNOLOGY GROUP Co.,Ltd. Address before: 215000 Xinchang Road, Suzhou Industrial Park, Jiangsu, 68 Co-patentee before: JIANGSU WEIGE NEW MATERIAL SCIENCE & TECHNOLOGY Co.,Ltd. Patentee before: SVG OPTRONICS, Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |