CN106864161A - A kind of security feature discrimination method and reflection-type safety element film - Google Patents
A kind of security feature discrimination method and reflection-type safety element film Download PDFInfo
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- CN106864161A CN106864161A CN201710039586.6A CN201710039586A CN106864161A CN 106864161 A CN106864161 A CN 106864161A CN 201710039586 A CN201710039586 A CN 201710039586A CN 106864161 A CN106864161 A CN 106864161A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F1/00—Designs or pictures characterised by special or unusual light effects
- B44F1/06—Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass paintings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F1/00—Designs or pictures characterised by special or unusual light effects
- B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
- B44F1/10—Changing, amusing, or secret pictures
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- Credit Cards Or The Like (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a kind of security feature discrimination method, the reflection-type safety element film that the method is based on being made up of focusing element array layer, substrate layer, micro- picture and text array layer and reflecting layer is realized；The true and false is realized by the photoresponse of spot light or the collimated light source irradiation reflection-type safety element film generation to differentiate；Present invention also offers a kind of reflection-type safety element film, relative to other safety elements, its structure is compacter, and real-time dynamic response can be carried out to illumination, and response effect is that other safety elements cannot be realized, with anti-tamper security performance higher.
Description
Technical field
The present invention relates to optical anti-counterfeiting field, and in particular to a kind of security feature discrimination method and reflection-type safety element are thin
Film, can be used for the anti-counterfeiting mark of the important objects such as marketable securities, certificate, certificate, card.
Background technology
Fake and inferior commodities annoying supervision department and daily life always, how to obtain with antifalsification higher
The safety element of energy, is the target constantly pursued in field.Optical anti-counterfeiting product has significant visual identity feature, is wherein
A kind of important anti-counterfeiting technology.Holographic technique is the mainstream technology in optical anti-counterfeiting field, with good antifalse effect and
It is widely used.But the development with the technology with it is ripe, holographic product is applied to pack more and more, decorate etc. to be led
Domain, its security feature is just progressively weakened.
A kind of micro optical array system based on More's amplification principle for growing up in the recent period, with significant visual effect
With good anti-counterfeiting performance.United States Patent (USP) U.S.Pat.No.4,892,336 discloses a kind of micro- using cylindrical lens array and bar shaped
Picture and text array is overlapped mutually the safety line that matching is formed.Drinkwater et al. is in United States Patent (USP) U.S.Pat.No.5,712,731
In propose a kind of array of spherical lenses and micro- picture and text array is mutually matched the transmission-type micro-optical systems to be formed.Chinese patent
The arrangement symmetry of microlens array and micro- picture and text array is extended in 200680048634.8 pairs of safety elements, it is proposed that
A kind of arrangement mode based on two-dimentional Bravias lattice, the security performance of element is further enhanced using this arrangement architecture.
Chinese patent CN201010180251.4 reduce further the symmetry of array, disclose a kind of array junctions by random alignment
The transmission-type safety element of structure composition.R.A.Steenblik etc. United States Patent (USP) U.S.Pat.No.2005/0180020 A1 with
And the parameter area of above-mentioned micro-optical systems is extended in later patents U.S.Pat.No.2008/0037131 A1, reduce
The bore (being less than 50um) and focal length of mirror so that the thickness of system is less than 50um, the safety element of film-type is formd, so as to open up
Its range of application is opened up.The patent also discloses the micro-optical systems of some reflection-types, and this kind of reflection type system need to be by micro- figure
Text is arranged on the focal plane of microlens array, to form display feature.
The micro optical array system of reflection-type has greater compactness of structure relative to transmissive system, and safety element can do
It is thinner, it is easier to it is integrated.But, said system is all based on More and amplifies image-forming principle, and its micro- picture and text array all needs to be arranged on
At the focal length of reflection-type micro optical array.It is not enough to there is both sides in this structure：1) structural thickness also suffers from micro-optics battle array
The limitation of row focal length, it is impossible to further thinning.2) safety element cannot carry out dynamic response to the change of illumination.So as to constrain
Its scope of application and security performance.
The content of the invention
In view of this, the purpose of the present invention is to overcome the shortcoming in background technology, there is provided a kind of security feature discrimination method
And reflection-type safety element film.
The purpose of the present invention is achieved through the following technical solutions：A kind of security feature discrimination method, the method is based on
The reflection-type safety element film being made up of focusing element array layer, substrate layer, micro- picture and text array layer and reflecting layer is realized；Pass through
Spot light or collimated light source irradiate photoresponse that the reflection-type safety element film produces and differentiate realizing the true and false；The light rings
Should include：
Under spot light effect, the response forms that the safety element film is produced include：It is described when the spot light is opened
The characteristic image or Partial Feature image that safety element film shows will show；When the spot light is closed, the safety unit
The characteristic image or Partial Feature image that part film shows will disappear；The spot light is diverging spot light or convergent point light
Source.
Under collimated light source effect, the response forms that the safety element film is produced include：The collimation optical illumination is opened
When, the characteristic image or Partial Feature image that the safety element film shows will show；When the collimation optical illumination is closed,
The characteristic image or Partial Feature image that the safety element film shows will disappear.
Further, the response also includes：The plane normal direction where the spot light is along safety element film
When mobile, characteristic image or the widthwise size of Partial Feature image and longitudinal depth location that the safety element film shows
There is corresponding change, or the characteristic image that show of the safety element film or Partial Feature image will be around image places
The normal direction of plane is rotated；It is described when the spot light is moved along the direction parallel to plane where safety element film
Characteristic image that safety element film shows or the position of Partial Feature image are along parallel to where safety element film
Planar movement, and the moving direction of the characteristic image and moving direction of light source is identical or moving direction phase with light source
Instead.
Further, the response also includes：When the collimated light illumination direction changes, the safety element film shows
Characteristic image or Partial Feature image position along parallel to the planar movement where safety element film, and the spy
The moving direction for levying image is with the change direction of illumination direction identical or changed in the opposite direction with illumination direction.
The present invention also provides a kind of reflection-type safety element film, and the reflection-type safety element film includes concentrating element
Array layer, substrate layer, reflecting layer and micro- picture and text array layer；Micro- picture and text array layer is formed by the arrangement of micro- picture and text unit；It is described
Focusing element array layer is formed by the arrangement of concentrating element unit；At least part of micro- picture and text unit is not in the concentrating element list
In the focal depth range of unit；Under spot light or collimation optical illumination, micro- picture and text unit is by corresponding focusing unit and instead
Penetrate layer and zoom into picture；The intensified image of each micro- picture and text unit is overlapped mutually, and acts on forming the characteristic image by integrated imaging.
Further, at least partly micro- picture and text unit is located within one times of focal length of focusing element array layer,
It is preferred that within 0.5 times of focal length.
Further, at least partly micro- picture and text unit is located at outside one times of focal length of focusing element array layer, preferably
Between 1 times of focal length and 3 times of focal lengths.
Further, in the concentrating element cell array layer, the arrangement mode of concentrating element unit includes：With symmetrical
The orthogonal arrangement of axle, honeycomb arrangement, the low-symmetry arrangement without symmetry axis or random alignment etc..Micro- picture and text unit
Arrangement mode is identical with the arrangement mode of the focusing unit.
Further, the concentrating element unit can use cylindrical microlenses, spherical lens, non-spherical lens, Fresnel
The various micro optical elements with focusing function such as lens.The bore of the concentrating element unit can be circular, square, long
The various geometries such as square, triangle, hexagon, polygon.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art：
1. reflection-type safety element film disclosed by the invention, relative to other safety elements, its structure is compacter, whole
Body thickness is thinner, it is easier to integrated, and the scope of application is more extensive.
2. reflection-type safety element film disclosed by the invention, relative to the picture contrast shown by other safety elements
It is higher.
3. reflection-type safety element disclosed by the invention can carry out real-time dynamic response to illumination, and response effect is other
What safety element cannot be realized, with anti-tamper security performance higher.
4. structure depth of the depth of microstructure relative to other safety elements in reflection-type safety element disclosed by the invention
Degree is more shallow.Advantageously reduce difficulty of processing and cost of manufacture.
Brief description of the drawings
Fig. 1 and 2 is respectively reflection-type safety element film described in embodiment one in spot light and without under spot light irradiation
Schematic diagram；
Fig. 3 is photoresponse schematic diagram of the reflection-type safety element film described in embodiment one under spot light movement；
Figure 4 and 5 are respectively reflection-type safety element film described in embodiment two in spot light and without under spot light irradiation
Schematic diagram；
Fig. 6 is photoresponse schematic diagram of the reflection-type safety element film described in embodiment two when mobile；
Fig. 7 and 8 is respectively reflection-type safety element film described in embodiment three in spot light and without under spot light irradiation
Schematic diagram；
Fig. 9 and 10 is respectively reflection-type safety element film described in example IV in spot light and without under spot light irradiation
Schematic diagram；
Figure 11 and 12 is respectively reflection-type safety element film described in embodiment five in spot light and without under spot light irradiation
Schematic diagram；
Figure 13 and 14 is respectively reflection-type safety element film described in embodiment six in spot light and without under spot light irradiation
Schematic diagram；
Figure 15 and 16 is photoresponse of the reflection-type safety element film described in embodiment six under spot light movement and illustrates
Figure；
Figure 17 is photoresponse schematic diagram of the reflection-type safety element film described in example IV under collimated light movement；
Figure 18 and 19 is respectively reflection-type safety element film described in embodiment seven in spot light and without under spot light irradiation
Schematic diagram；
Figure 20 is photoresponse schematic diagram of the reflection-type safety element film described in embodiment seven under spot light movement；
Figure 21 is photoresponse schematic diagram of the reflection-type safety element film described in embodiment seven under spot light movement；
Figure 22 and 23 is showing under reflection-type safety element film described in embodiment eight irradiates in spot light and without spot light
It is intended to；
Figure 24 and 25 is showing under reflection-type safety element film described in embodiment nine irradiates in spot light and without spot light
It is intended to；
Figure 26 is photoresponse schematic diagram of the reflection-type safety element film described in embodiment nine under spot light movement；
Figure 27 and 28 is showing under reflection-type safety element film described in embodiment ten irradiates in spot light and without spot light
It is intended to；
Figure 29 is photoresponse schematic diagram of the reflection-type safety element film described in embodiment ten under spot light movement；
In figure, focusing element array layer 1, substrate layer 2, micro- picture and text array layer 3, reflecting layer 4.
Specific embodiment
The invention discloses a kind of security feature discrimination method, the method is based on reflection-type safety element film in spot light
Or collimated light source irradiates the lower special photoresponse for producing to realize true and false discriminating.
The photoresponse includes：
Under spot light effect, the response forms that the safety element film is produced include：It is described when the spot light is opened
The characteristic image or Partial Feature image that safety element film shows will show；When the spot light is closed, the safety unit
The characteristic image or Partial Feature image that part film shows will disappear；The spot light is diverging spot light or convergent point light
Source.
Under collimated light source effect, the response forms that the safety element film is produced include：The collimation optical illumination is opened
When, the characteristic image or Partial Feature image that the safety element film shows will show；When the collimation optical illumination is closed,
The characteristic image or Partial Feature image that the safety element film shows will disappear.
The special response forms based on more than, present invention also offers a kind of reflection-type safety element film, including focus on
Element arrays layer 1, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3；Micro- picture and text array layer 3 is arranged by micro- picture and text unit
Form, specific structure form includes：Micro- picture and text (micro- picture and text unit) are set over the transparent substrate, so as to constitute micro- picture and text array layer
3, or each micro- picture and text unit is separate, constitute micro- picture and text array layer 3 after orderly or unordered arrangement；The focusing element array
Layer 1 is formed by the arrangement of concentrating element unit；At least part of micro- picture and text unit is not in the depth of focus model of the concentrating element unit
In enclosing；Under spot light or collimation optical illumination, micro- picture and text unit is zoomed into by corresponding focusing unit and reflecting layer 4
Picture；The intensified image of each micro- picture and text unit is overlapped mutually, and acts on forming characteristic image by integrated imaging.
When the symmetry axis of the focusing element array is parallel to each other with the symmetry axis of micro- picture and text cell array, or the focusing
When the reference axis of element arrays is parallel to each other with micro- picture and text cell array reference axis, if the spot light is along safety element film
Place plane normal direction is moved, and characteristic image that safety element film show or the widthwise size of Partial Feature image and is indulged
There is corresponding change to depth location.
When the symmetry axis of the symmetry axis not with micro- picture and text cell array of the focusing element array is parallel, or described focus on unit
When person reference axis of the reference axis of part array not with micro- picture and text cell array is parallel, if the spot light is along safety element film
Place plane normal direction is moved, and the characteristic image or Partial Feature image that safety element film shows will be where images
The normal direction of plane is rotated.
When micro- picture and text unit is within one times of focal length of concentrating element unit when, what the safety element film showed
Characteristic image or Partial Feature image are suspended under safety element film, and the spot light is along thin parallel to safety element
When the direction of plane is moved where film, position is along parallel to the planar movement where safety element film, and the characteristic pattern
The moving direction of picture is identical with the moving direction of light source；Or, characteristic image or part that the safety element film shows
Characteristic image is suspended on safety element film, and the spot light is along the direction parallel to plane where safety element film
When mobile, position along parallel to the planar movement where safety element film, and the characteristic image moving direction and light
The moving direction in source is opposite.
When micro- picture and text unit is beyond one times of focal length of concentrating element unit, the spy that the safety element film shows
Levy image or Partial Feature image is suspended under safety element film, the spot light is along parallel to safety element film
When the direction of place plane is moved, characteristic image that the safety element film shows or the position of Partial Feature image along
Parallel to the planar movement where safety element film, and moving direction and the light source of the characteristic image moving direction phase
Instead；Or, the characteristic image or Partial Feature image that the safety element film shows are suspended on safety element film,
When the spot light is moved along the direction parallel to plane where safety element film, the spy that the safety element film shows
The position of image or Partial Feature image is levied along parallel to the planar movement where safety element film, and the characteristic pattern
The moving direction of picture is identical with the moving direction of light source.
The display effect of characteristic image includes three-dimensional stereo effect and dynamic image effect.The three-dimensional stereo effect bag
Include：Image is suspended on the safety element film；Image is suspended under the safety element film；3-D view across
In three dimensions above and below safety element film.The dynamic image effect include orthogonal parallactic movement effect and
Parallax moves effect.
With reference to embodiment, accompanying drawing, the invention will be further described.
Embodiment one
The present embodiment provides a kind of reflection-type safety element film and its secure ID authentication method, as illustrated in fig. 1 and 2,
Including focusing element array layer 1, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the focusing element array layer 1, substrate layer
2nd, reflecting layer 4 is bonded successively, and micro- picture and text array layer 3 is obtained by setting micro- picture and text (micro- picture and text unit) on the transparent substrate.
The focusing element array layer 1 is formed by spherical lens elements orthogonal arrangement, and array period is T.Micro- picture and text unit orthogonal arrangement,
Array period is 1.005T.The symmetry axis of the focusing element array is parallel to each other with the symmetry axis of micro- picture and text cell array.Institute
Micro- picture and text unit is stated to be located at 0.2 times of focal length of the focusing element array.
As shown in figure 1, under the illumination of spot light, light is imaged by the comprehensive magnification between the array element to be made
With, it is described focusing array layer above be superimposed formed can observed person receive suspended images S.
As shown in Fig. 2 under without spot light, safety element will be unable to be formed suspension as S, and its characteristic information is hidden
Hide.
As shown in figure 3, when the spot light is moved clockwise along the parallel direction with safety element plane as shown by arrows
When dynamic, observer can be seen image S and will do movement clockwise with the direction of arrow along safety element in-plane, in moving process
The size of image S keeps constant.
Embodiment two
The present embodiment provides a kind of reflection-type safety element film and its secure ID authentication method, as shown in Figures 4 and 5,
Including focusing element array layer 1, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the focusing element array layer 1, substrate layer
2nd, reflecting layer 4 is bonded successively, and micro- picture and text unit is embedded in substrate layer 2, constitutes micro- picture and text array layer 3.It is described to focus on unit
Part array layer 1 is formed by spherical lens elements orthogonal arrangement, and array period is T.Micro- picture and text unit orthogonal arrangement, array period is
0.995T.The symmetry axis of the focusing element array is parallel to each other with the symmetry axis of micro- picture and text cell array.Micro- picture and text list
Unit is at 0.1 times of focal length of the focusing element array.
As shown in Figure 4 under the illumination of spot light, light is acted on by the comprehensive magnification imaging between the array element,
It is described focusing array layer it is formed below can observed person receive suspended images S.
As shown in fig. 6, the safety element is rotated around trunnion axis with the direction of arrow, observer can be seen image S will
Movement is done along the direction parallel with rotation direction.
As shown in figure 5, under without spot light, safety element will be unable to be formed suspension as S, and its characteristic information is hidden
Hide.
Embodiment three
The present embodiment provides a kind of reflection-type safety element film, as shown in FIG. 7 and 8, including focusing element array layer 1,
Substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the reflecting layer 4, focusing element array layer 1, substrate layer 2 are bonded successively, institute
State micro- picture and text unit to be embedded in substrate layer 2, constitute micro- picture and text array layer 3.The focusing element array layer 1 is by spherical lens list
First orthogonal arrangement is formed, and array period is T.Micro- picture and text unit orthogonal arrangement, array period is 1.003T.It is described to focus on unit
The symmetry axis of part array is parallel to each other with the symmetry axis of micro- picture and text cell array.Micro- picture and text unit is located at the concentrating element
At 0.2 times of focal length of array.
As shown in fig. 7, under the illumination of spot light, light is imaged by the comprehensive magnification between the array element to be made
With, it is described focusing array layer above formed can observed person receive suspended images S.As shown in figure 8, without spot light
Under, safety element will be unable to form suspension picture, and its characteristic information is hidden.
Example IV
The present embodiment provides a kind of reflection-type safety element film, as shown in Figures 9 and 10, including focusing element array layer 1,
Substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the reflecting layer 4, focusing element array layer 1, substrate layer 2 are bonded successively, institute
State micro- picture and text unit to be embedded in substrate layer 2, constitute micro- picture and text array layer 3.The focusing element array layer 1 is by non-spherical lens
Unit honeycomb arrangement is formed, and the distance between adjacent non-spherical lens unit center is T microns.Micro- cellular row of picture and text unit
Row, distance is 1.005T microns between adjacent micro- picture and text unit center.The symmetry axis of the focusing element array and micro- picture and text
The symmetry axis of cell array is parallel to each other.Micro- picture and text unit is located at 0.1 times of focal length of the focusing element array.
As shown in figure 9, under the illumination of spot light, formed above the focusing array layer can observed person 10 receive
Suspended images S.As shown in Figure 10, under without spot light, safety element will be unable to form suspension picture, and its characteristic information is hidden
Hide.
Embodiment five
The present embodiment provides a kind of reflection-type safety element film, as shown in FIG. 11 and 12, including focusing element array layer
1st, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the reflecting layer 4, focusing element array layer 1, substrate layer 2 are bonded successively.
Micro- picture and text unit includes first micro- picture and text unit and second micro- picture and text unit, is embedded in substrate layer 2, respectively constitutes the
The micro- picture and text array layer 32 of one micro- picture and text array layer 31 and second；The focusing element array layer 1 is by non-spherical lens unit honeycomb
Shape arrangement is formed, and the distance between adjacent non-spherical lens unit center is T microns.First micro- picture and text unit and second micro-
Picture and text unit is formed in honeycomb arrangement respectively, and distance is 1.005T microns between adjacent micro- picture and text unit center.It is described
The symmetry axis of focusing element array is parallel to each other with the symmetry axis of micro- picture and text cell array.First micro- picture and text unit is located at described poly-
At one times of focal length of burnt element arrays.Second micro- picture and text unit is located at 0.1 times of focal length of the focusing element array.
As shown in figure 11, under the illumination of spot light, being formed above the focusing array layer can quilt for the safety element
Suspended images S and suspend as S1 that observer receives.As shown in figure 12, under without spot light, safety element only shows outstanding
Floating picture S1, and suspension cannot be shown as S, its characteristic information is hidden.
Embodiment six
The present embodiment provides a kind of reflection-type safety element film, as shown in Figs. 13 and 14, including focusing element array layer
1st, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the focusing element array layer 1, reflecting layer 4, substrate layer 2 are bonded successively,
Micro- picture and text unit is embedded in reflecting layer 4, constitutes micro- picture and text array layer 3.The focusing element array layer 1 is by spherical lens
The orthogonal arrangement of unit 5 is formed, and array period is T microns.Micro- picture and text unit orthogonal arrangement, array period is that 0.998T is micro-
Rice.The symmetry axis of the array that the symmetry axis of the focusing element array is constituted with micro- picture and text unit is parallel to each other.Micro- picture and text
Array layer 3 is located at 0.1 times of focal length of the focusing element array.
As shown in figure 13, under the illumination of spot light, it is described focusing array layer it is formed below can observed person receive
Suspended images S.As shown in figure 14, under without spot light, safety element will be unable to form suspension picture, and its characteristic information is hidden
Hide.As shown in figure 15, when the spot light is moved up and down along the safety element normal direction, moving direction such as arrow
Shown, observer can be seen image S and will be moved up and down with the direction of arrow along safety element normal direction, scheme in moving process
As simultaneously the size of S occurs corresponding change.As shown in figure 16, when the spot light 8 is along the safety element in-plane
When moving left and right, as shown by arrows, observer can be seen image S will be along safety element in-plane with arrow for moving direction
Direction moves left and right, and the size of image S keeps constant in moving process.As shown in figure 17, when the illumination side of the collimated light
During to changing as shown by arrows, observer can be seen image S and will do a left side with the direction of arrow along plane where safety element
Move right, the size of image S keeps constant in moving process.
Embodiment seven
The present embodiment provides a kind of reflection-type safety element film, as shown in Figures 18 and 19, including focusing element array layer
1st, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the focusing element array layer 1, reflecting layer 4, substrate layer 2 are bonded successively,
Micro- picture and text unit is embedded in reflecting layer 4, constitutes micro- picture and text array layer 3；The focusing element array layer 1 is by spherical lens
The orthogonal arrangement of unit 5 is formed, and array period is T microns.Micro- picture and text unit orthogonal arrangement, array period is T microns.It is described
The symmetry axis of focusing element array is 5 degree with the symmetry axis angle of micro- picture and text cell array.Micro- picture and text array layer 3 is located at institute
State at 0.1 times of focal length of focusing element array.
As shown in figure 18, under the illumination of spot light, it is described focusing array layer it is formed below can observed person receive
Outstanding dynamic image S, the dynamic image S are located in the safety element plane.As shown in figure 21, when the spot light is along vertical
When the straight direction in safety element in-plane as shown by arrows is moved, observer can be seen image S will be around safety element method
Line direction is rotated with direction shown in arrow.As shown in figure 20, the safety element is rotated around trunnion axis with direction, observation
Person can be seen image S and will do movement along the direction orthogonal with rotation direction.As shown in figure 19, under without spot light, peace
Full element will be unable to form suspension picture, and its characteristic information is hidden.
Embodiment eight
The present embodiment provides a kind of reflection-type safety element film, as depicted in figures 22 and 23, including focusing element array layer
1st, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the focusing element array layer 1, substrate layer 2, reflecting layer 4 bond successively,
Micro- picture and text unit is embedded in reflecting layer 4, constitutes micro- picture and text array layer 3.The focusing element array layer 1 is by spherical lens
Unit random alignment is formed.Micro- picture and text unit random alignment, the arrangement mode phase of its arrangement mode and the spherical lens
Together.The size of the focusing element array is 1.005 times of micro- picture and text cell array size.Micro- picture and text array layer 3
At 0.3 times of focal length of the focusing element array.
As shown in figure 22, under the illumination for converging spot light, in the lower section of the safety element, top and safety element
In the three dimensions of place plane, formed can observed person receive suspended images S.As shown in figure 23, without spot light
Under, safety element will be unable to form suspension picture, and its characteristic information is hidden.
Embodiment nine
The present embodiment provides a kind of reflection-type safety element film, as shown in FIG. 24 and 25, including focusing element array layer
1st, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the reflecting layer 4, focusing element array layer 1, substrate layer 2 are bonded successively,
Micro- picture and text unit is embedded in substrate layer 2, constitutes micro- picture and text array layer 3.The focusing element array layer 1 is by aspherical
Mirror unit honeycomb arrangement is formed, and the distance between adjacent non-spherical lens unit center is T microns.Micro- picture and text unit honeybee
Nest shape is arranged, and distance is 1.003T microns between adjacent micro- picture and text unit center.The symmetry axis of the focusing element array with
The symmetry axis of micro- picture and text cell array is parallel to each other.Micro- picture and text array layer 3 is located at 1.2 times of Jiao of the focusing element array
Away from place.
As shown in figure 24, under the illumination of spot light, it is described focusing array layer above formed can observed person 10 receive
Suspended images S.As shown in figure 26, when the spot light is along the direction up time parallel to safety element plane as shown by arrows
When pin is moved, observer can be seen image S and will do movement clockwise with the direction of arrow along safety element in-plane, be moved through
The size of image S keeps constant in journey.As shown in figure 25, under without spot light, safety element will be unable to form suspension picture,
Its characteristic information is hidden.
Embodiment ten
The present embodiment provides a kind of reflection-type safety element film, as shown in Figure 27 to Figure 28, including focusing element array
Layer 1, substrate layer 2, reflecting layer 4 and micro- picture and text array layer 3, the reflecting layer 4, focusing element array layer 1, substrate layer 2 glue successively
Knot.Micro- picture and text unit includes that first micro- picture and text unit and second micro- picture and text unit are embedded in substrate layer 2, respectively constitutes
The micro- picture and text array layer 32 of first micro- picture and text array layer 31 and second；The focusing element array layer 1 is by non-spherical lens unit honeybee
The arrangement of nest shape is formed, and the distance between adjacent non-spherical lens unit center is T microns, first micro- picture and text unit and second
Micro- equal honeycomb arrangement of picture and text unit, distance is 1.003T microns between adjacent micro- picture and text unit center.The concentrating element
The symmetry axis of array is parallel to each other with the symmetry axis of micro- picture and text cell array.First micro- picture and text unit is located at the focusing unit
At 1.5 times of focal lengths of part array.Second micro- picture and text unit is located at 0.1 times of focal length of the focusing element array.
The safety element under the illumination of spot light, formed can observed person receive suspended images S and suspend as S1.
As shown in figure 29, when the spot light is moved along the direction parallel to safety element in-plane as shown by arrows, observation
Person can be seen image S1 and will do movement with direction shown in arrow, and observer can be seen image S and will do movement with direction shown in arrow.
Under without spot light, safety element cannot show suspension as S and suspend as S1 that its characteristic information is hidden.
Claims (8)
1. a kind of security feature discrimination method, it is characterised in that the method is based on by focusing element array layer, substrate layer, micro- figure
The reflection-type safety element film that literary array layer and reflecting layer are constituted is realized；The reflection is irradiated by spot light or collimated light source
Type safety element film produce photoresponse come realize the true and false differentiate；The photoresponse includes：
Under spot light effect, the response forms that the safety element film is produced include：When the spot light is opened, the safety
The characteristic image or Partial Feature image that element film shows will show；When the spot light is closed, the safety element is thin
The characteristic image or Partial Feature image that film shows will disappear；The spot light is for diverging spot light or converges spot light.
Under collimated light source effect, the response forms that the safety element film is produced include：When the collimation optical illumination is opened, institute
Stating characteristic image that safety element film shows or Partial Feature image will show；It is described when the collimation optical illumination is closed
The characteristic image or Partial Feature image that safety element film shows will disappear.
2. method according to claim 1, it is characterised in that the response also includes：When the spot light is along safety
When plane normal direction is moved where element film, characteristic image or Partial Feature image that the safety element film shows
Widthwise size and longitudinal depth location there is corresponding change, or the characteristic image that shows of the safety element film or portion
Dividing characteristic image will rotate around the normal direction of plane where image；The spot light is along parallel to safety element film institute
When the direction of plane is moved, characteristic image that the safety element film show or the position of Partial Feature image are along putting down
Row in the planar movement where safety element film, and the moving direction of the characteristic image and the moving direction of light source it is identical or
Person is opposite with the moving direction of light source.
3. method according to claim 1, it is characterised in that the response also includes：The collimated light illumination direction becomes
During change, characteristic image that the safety element film shows or the position of Partial Feature image are along thin parallel to safety element
Planar movement where film, and the moving direction of the characteristic image and the change direction of illumination direction it is identical or with illumination side
To change in the opposite direction.
4. a kind of reflection-type safety element film, it is characterised in that the reflection-type safety element film includes concentrating element battle array
Row layer (1), substrate layer (2), reflecting layer (4) and micro- picture and text array layer (3)；Micro- picture and text array layer (3) is by micro- picture and text unit
Arrangement is formed；Focusing element array layer (1) is formed by the arrangement of concentrating element unit；At least part of micro- picture and text unit is not
In the focal depth range of the concentrating element unit；Under spot light or collimation optical illumination, micro- picture and text unit is by right
The focusing unit answered and reflecting layer (4) zoom into picture；The intensified image of each micro- picture and text unit is overlapped mutually, and is made by integrated imaging
With the formation characteristic image.
5. reflection-type safety element film according to claim 4, it is characterised in that at least part of micro- picture and text unit
Within one times of focal length of focusing element array layer (1), preferably within 0.5 times of focal length.
6. reflection-type safety element film according to claim 4, it is characterised in that at least part of micro- picture and text unit is located at
Outside one times of focal length of focusing element array layer (1), preferably between 1 times of focal length and 3 times of focal lengths.
7. reflection-type safety element film according to claim 4, it is characterised in that the concentrating element cell array layer
(1) in, the arrangement mode of concentrating element unit includes：Orthogonal arrangement, honeycomb arrangement with symmetry axis, not symmetry axis
Low-symmetry arrangement or random alignment etc..The arrangement mode of micro- picture and text unit and the arrangement mode phase of the focusing unit
Together.
8. reflection-type safety element film according to claim 4, it is characterised in that the concentrating element unit can be used
The various micro optical elements with focusing function such as cylindrical microlenses, spherical lens, non-spherical lens, Fresnel lens.It is described
The bore of concentrating element unit can be the various geometric forms such as circle, square, rectangle, triangle, hexagon, polygon
Shape.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039586.6A CN106864161B (en) | 2017-01-19 | 2017-01-19 | Security feature identification method and reflective security element film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710039586.6A CN106864161B (en) | 2017-01-19 | 2017-01-19 | Security feature identification method and reflective security element film |
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| CN106864161B CN106864161B (en) | 2020-05-08 |
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| CN109808337A (en) * | 2017-11-21 | 2019-05-28 | 中钞特种防伪科技有限公司 | Optical anti-counterfeit element and optical 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 |
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