False proof trademark by sub-wavelength grating guided mode resonance and method for making same
A technology of sub-wavelength grating and guided mode resonance, which is applied to stamps, instruments, identification devices, etc., can solve the problems that affect the standardized development of market economy, anti-counterfeiting trademarks cannot play an anti-counterfeiting effect, and the anti-counterfeiting effect is not good, so as to achieve complex design principles , good anti-counterfeiting effect and low cost
Inactive Publication Date: 2005-06-22
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0002] In the period when my country shifted from a planned economy to a market economy and integrated into the period of rapid development of the global economy, commodity production developed rapidly, with a wide variety of products and new products appearing constantly. Although the registered trademark system has been established, counterfeit trademark products have been banned repeatedly, hindering and affecting The standardized development of the market economy urgently needs to crack down on counterfeit products, and it is also urgent to develop anti-counterfeiting trademarks to regulate the development of the commodity economy and commodity market
At present, there are laser holographic anti-counterfeiting registered trademarks, electronic code anti-counterfeiting registered trademarks and diffraction grating anti-counterfeiting trademarks, etc. These anti-counterfeiting registered trademarks have simple physical principles, convenient production, low cost, and are conducive to wide application. These are its advantages. The advantages bring the disadvantages of being easy to be imitated and the anti-counterfeiting effect is not good, so that the anti-counterfeiting trademark cannot play a real anti-counterfeiting role
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[0023] Such as figure 1 As shown, the sub-wavelength grating guided mode resonance anti-counterfeiting trademark of the present invention is composed of a translucent and visible registered trademark substrate 1, a common registered trademark graphic 2, a trademark registration unit name 3 and an anti-counterfeiting function area 4, and the registered trademark substrate 1 is half Transparent plastic film with a thickness of 0.02-0.5mm and a size of 5×5-30×30mm, whose shape is rectangle or square, circle, ellipse, rhombus or polygon; common registered trademark graphics 2 are designed by the registered trademark unit The trademark graphic of the trademark is printed on the film by printing method, so that it is visible in any direction and situation; the name of the trademark registration unit 3 is the full name or abbreviation of the trademark registration unit, which is the same as the trademark graphic 2. The method of printing the name on the film is visible in any directi...
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A sub-wavelength grating guide-modular anti-false registered trademark is composed of trademark base plate, ordinary patterns, registered unit names, anti-false regions and a light-absorption self-adhesive layer coated characterizing that under the base plate patterns, words or letters with anti-false function visible in special directions are formed by several pressed, one way sub-wave-length gratings in different lengths. Monochrome bright anti-false patterns, words or letters can be seen from the due front of the trademark since sub-wave length grating generates modular resonance related to multiple factors of its material index of refraction, its grating period and its height.
Description
technical field [0001] The invention relates to a sub-wavelength grating guided mode resonance anti-counterfeiting trademark and a manufacturing method thereof, belonging to the technical field of trademark anti-counterfeiting. Background technique [0002] In the period when my country shifted from a planned economy to a market economy and integrated into the period of rapid development of the global economy, commodity production developed rapidly, with a wide variety of products and new products appearing constantly. Although the registered trademark system has been established, counterfeit trademark products have been banned repeatedly, hindering and affecting The standardized development of the market economy urgently needs to crack down on counterfeit products, and it is also urgent to develop anti-counterfeiting trademarks to regulate the development of the commodity economy and commodity market. At present, there are laser holographic anti-counterfeiting registered tra...
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IPC IPC(8): G09F3/02
Inventor 秦涛陈旭南石建平陈献忠
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI