CN2277106Y

CN2277106Y - Anti-forge trade mark with polarized cipher

Info

Publication number: CN2277106Y
Application number: CN 94205949
Authority: CN
Inventors: 刘威; 刘建文; 陈国光; 黄崇杰; 谭国强
Original assignee: 刘威
Priority date: 1994-03-28
Filing date: 1994-03-28
Publication date: 1998-03-25
Anticipated expiration: 2004-03-28

Abstract

The utility model relates to an anti-counterfeiting trade mark with a polarized cipher, which is formed by sandwiching a transparent material sheet between a piece of light reflecting layer material sheet and a polarizing sheet. The transparent sheet is provided with a cipher pattern controlled by the manufacturer. A color pattern which is formed by the cipher pattern is used as the display trade mark of the product, and the color pattern which is different from the cipher pattern can be observed on the polarizing sheet. The cipher pattern is difficult to extrapolate from the display trade mark, unless the manufacturer discloses the cipher pattern, achieving the purpose of preventing from imitation. The consumer can judge whether the product is false according to the consistence of the pattern observed on the polarizing sheet and the display trade mark of the manufacturer.

Description

Polarisation cipher counterfeit-proof trademark

The utility model relates to a kind of antifalsification label, especially a kind of polarisation cipher counterfeit-proof trademark of implicit cipher pattern.

In disclosed anti-falsifying label technology, found: 1, laser holographic molding antifalsification label; 2, magnetic coating printed label; 3, liquid crystal coating printed label; 4, the stealthy printed label of fluorescence; 5, the label design (CN90102757X) of colourless thermal-reactive coating composition; 6, fingerprint pattern sign (CN91107282.9); 7, fluorescence falsification preventing printing-ink (1992.12.30 Weekly Digest); 8, " vacuum plating translucent aluminium film "; 9, the anti-counterfeiting technology of CN1078816A; 10, anti-counterfeiting technology such as CN1080423A, CN1080424A; 11, a kind of multifunctional anti-falsifying label and the manufacture method thereof of CN1079324A; 12, " reversible invisible forge-proof mark " of CN1079570A.The weak point of above-mentioned anti-counterfeiting mark is not have the security information of producer oneself to lie among the trade mark in trademark.Their pictorial trademark is all to the sky to come out, and very easy even the sign of stealthy type, from the hidden pattern to the display pattern, both shapes are identical by other people imitation, also are easy to be copied by other people.The CN93202512.9 trade mark of cipher pattern " implicit " has solved the problem of implicit cipher pattern in trade mark well: the cipher pattern that is implied in the trade mark is with the shown display pattern that goes out is different fully thus.Thereby reach the purpose that prevents that other people from copying, but because this patent is the printing opacity mode.On some commodity, install inconvenience is still arranged.

The purpose of this utility model provides a kind of polarisation cipher counterfeit-proof trademark that cipher pattern is just known by manufacturer oneself that contains in Commercial goods labels, as long as the underground own trade mark encrypted message of manufacturer, other people just have no way of preventing making.

The utility model is by sticking the transparency material thin slice that a slice contains the trademark cipher pattern on a slice light reflecting membrane layer, adding a polaroid during discriminating and form on the transparency material thin slice.

Compared with the prior art the utility model has other people the anti-characteristics of making of having no way of owing to be to adopt the thin slice reflected version, can attach to all kinds of commodity easily and get on, thereby reach use wide, the purpose that antifalse effect is good.

Further describe below in conjunction with accompanying drawing:

Fig. 1 is the utility model basic structure synoptic diagram.

Fig. 2 is a kind of structural representation of password stamen sheet of the present utility model.

Fig. 3 uses synoptic diagram for the utility model is used for box-packed class trademark.

Fig. 4 is used for the use synoptic diagram of cigarette case for the utility model.

Scientific basis of the present utility model mainly is to interfere superposition principle to realize according to chromatic polarization principle in the physics and polarized light through the reflection back.

As Fig. 1, nature white light directive polaroid (3), become polarized light afterwards through polaroid (3), this polarized light is divided into two bundle light (being ordinary ray and special ray) after entering password thin slice (2), the velocity of propagation of this two-beam line among thin slice is different, thin slice (2) phase differential occurred, this phase differential ΔΦ to the refractive index difference of this two-beam line in the process of their experience thin slices (2) in other words ₁Size and optical wavelength, thin slice everywhere thickness and thin slice factor such as refractive index is relevant everywhere, these have each polarized light of certain phase differential to be mapped to reflection synusia (1) thus the time reflection takes place returns and enter password thin slice (2) for the second time, when experiencing password thin slice (2) again, produce new phase differential ΔΦ again ₂, twice phase differential be superposed to total phase differential ΔΦ.These dephased ordinary rays and special ray all are polarized lights, and they run into polaroid (3) again after password thin slice (2) returns outgoing.Interference figure appears in stack during from polaroid (3) outgoing, and human eye just can be observed these colored interference figures.This interference figure shape be by optical wavelength of all kinds, thin slice (2) everywhere thickness and refractive index everywhere decide, and thin slice (2) thickness and index distribution situation everywhere everywhere produced by producer oneself control and decided, particularly the refractive index everywhere of thin slice (2) be by the three dimensions of crystal when condensing of transparent sheet (2) everywhere the distribution plan of non-linear stress tensor decide.We this by thin slice (2) everywhere the nonlinear pressure tensor distribution plan of thickness distribution figure and crystal be collectively referred to as " cipher pattern ", and the polarization interference of light multicolour pattern that this " cipher pattern " and human eye are gone up viewed various wavelength from polaroid (3) is diverse in shape.

Above-mentioned " cipher pattern " personnel selection on transparent sheet of material (2) is not come out soon, so be called implicit cipher pattern.Even if measure the difference of thickness everywhere (10 of thin slice (2) with instrument ^-7The rice order of magnitude) be quite difficult, add the difference of thin slice three dimensions refractive index everywhere, promptly use three-dimensional laser stadia surveying slice (2) thickness everywhere, still the refractive index factor in " cipher pattern " is not exclusively known, thereby to " cipher pattern " all " decoding ".This has not just laid physical basis for others' identification for manufacturer forms own producer exclusive " cipher pattern " on thin slice.

Structure of the present utility model be transparency material thin slice (2) that a slice is implied with the trademark cipher pattern go up with or press, plate the thin slice (1) that a slice or one deck have the reflected light function, on thin slice (2), place versatilely again or the fixing a slice polaroid (3) of going up is formed.

The shape of anisotropy or same sex transparency material thin slice (2) can be various planes, inclined-plane, the conical surface, curved surface, can be formed by stacking by 1 or multi-disc, and every index distribution everywhere is not necessarily even, and each sheet refractive index is also not necessarily identical." cipher pattern " can be formed by stacking by one or more " cipher pattern ".Fig. 2 is the example that is formed by stacking by multi-disc." cipher pattern " is formed among the AA ' B ' B of Fig. 2.Also can stamp various plain code patterns as required in addition.The formation of " cipher pattern " on the thin slice (2) is decided by manufacturer oneself control.Thin slice (1) with reflected light function and transparent membrane thin slice (2) sheet that also can unite two into one, polaroid (3) can independently be made into a single-piece, sells as the recognizer of " polarisation cipher counterfeit-proof trademark ".

Actual use of the present utility model is as follows: reflecting piece (1) is attached to the appropriate location of commodity, and the stamen sheet (2) that will contain " cipher pattern " again is attached to the top of reflecting piece (1).Human eye sees through movable polaroid (3) from top to down and observes, will see multicolour pattern, this multicolour pattern is noted promptly explicit identification as these commodity, be imprinted on the paper with this " explicit identification " and be attached near the appropriate location (be preferably in the position of pasting reflecting piece) of commodity with method of printing.When these commodity of purchase of customer, when not using polaroid (3) perspective, on " cipher pattern " thin slice, cannot see whatever, when when looking after, suitably, just seeing multicolour pattern around axle rotatory polarization sheet perpendicular to the polaroid plane with polaroid (3).Client can be according to the multicolour pattern of being seen from polaroid (3) and the producer disclosed explicit identification pattern consistent true and false of judging product whether on commodity.

Fig. 3 is the examples of implementation that the utility model is used for box class trademark: (4) are the composite sheet of reflecting piece and password stamen sheet, and (5) are that explicit identification is puted up the place, and (6) are international bar codes, and (7) are the commodity boxes.

Fig. 4 is the embodiment two of the utility model trademark (as cigarette) of being used for box class commodity: (8) are the composite sheet of reflecting piece and password stamen sheet, and the box line (9) of opening of this sheet and original cigarette is connected as a single entity.(12) be that explicit identification is puted up the place, (11) are international bar codes, and (10) are the commodity boxes.Open the box picked cigarette, draw (8) bands (9) to get final product, and be disposable use.

Claims

1, a kind of polarisation cipher counterfeit-proof trademark, comprise transparency material thin slice and polaroid, it is characterized in that: on a slice light reflecting membrane layer (1), stick the transparency material thin slice (2) that one deck contains the trademark cipher pattern, on transparency material thin slice (2), add a polaroid (3) again and form.