The half of (generally representing with λ) and the ratio of selected materials refractive index (generally representing with n), shortcoming is that figure selecting is limited, onlyĬan select, about the point-symmetric graphic designs of circle, for not rounded point symmetry figure, about central authorities' primary maximum symmetry two will to be obtained Two step design modes, this design is simple, it is not necessary to alignment alignment, and design step depth is selected optical maser wavelength Opto-electronics is flourish in recent years, and the design of domestic existing diffraction optical element is divided into two kinds, and the first is The manufacturing method not only can be applied to counterfeit prevention, design and production of precious metal coins or stamps, but also can be applied to anti-counterfeit detection for other products besides the metal coins or stamps, thereby providing a new way for anti-counterfeit detection of products with a metal component or part. The manufacturing method for a metal coin or stamp, which is provided with the DOE anti-counterfeit pattern and difficult to be copied, visual and convenient to be recognized and can be suitable for mass large-batch production, and the metal coin and stamp are provided in allusion to deficiencies in the prior art. The manufacturing method comprises the steps of optical design, laser direct wiring of a mask plate, metal mold processing, labeled mask plate exposure and the like. The characteristics lie in that a DOE is manufactured on the surface of a metal coin or stamp, and the DOE is enabled to be organically combined with a target pattern on the surface of the coin or stamp, so that the anti-counterfeit performance of the coin or stamp is improved, and collection values are improved. The invention relates to a metal coin or stamp with a DOE (Diffraction Optical Element) anti-counterfeit pattern and a manufacturing method thereof. A44C21/00- Coins Emergency money Beer or gambling coins or tokens, or the like.G02B5/00- Optical elements other than lenses.G02B- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by SHENYANG MINT CO Ltd filed Critical SHENYANG MINT CO Ltd Priority to CN201610279546.4A priority Critical patent/CN106054294A/en Publication of CN106054294A publication Critical patent/CN106054294A/en Status Pending legal-status Critical Current Links Original Assignee SHENYANG MINT CO Ltd Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Inventor 张波 龙淑杰 吴伟 梁军 王洋 Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Pending Application number CN201610279546.4A Other languages Chinese ( zh) Google Patents Metal coin or stamp with DOE (Diffraction Optical Element) anti-counterfeit pattern and manufacturing method thereofĭownload PDF Info Publication number CN106054294A CN106054294A CN201610279546.4A CN201610279546A CN106054294A CN 106054294 A CN106054294 A CN 106054294A CN 201610279546 A CN201610279546 A CN 201610279546A CN 106054294 A CN106054294 A CN 106054294A Authority CN China Prior art keywords doe mask plate metal chapter metal die Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents CN106054294A - Metal coin or stamp with DOE (Diffraction Optical Element) anti-counterfeit pattern and manufacturing method thereof CN106054294A - Metal coin or stamp with DOE (Diffraction Optical Element) anti-counterfeit pattern and manufacturing method thereof
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