http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111127289-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T1-0021 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T1-00 |
| filingDate | 2019-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111127289-B |
| titleOfInvention | Design method of high-low frequency multiplexing super-surface anti-counterfeiting image with watermark |
| abstract | The invention discloses a design method of a high-low frequency multiplexing super-surface anti-counterfeiting image with a watermark, which relates to the technical field of micro-nano optics, and comprises a nano brick array comprising a plurality of nano brick structure units, wherein the distribution of the steering angles of nano bricks in the nano brick array is skillfully designed, when linearly polarized light is incident on the super surface, the light intensity and the polarization direction of the linearly polarized light are modulated and then emitted as reflected light, the reflected light displays a mixed image with high resolution in a near field through an analyzer, different image information can be extracted from the mixed image under different cut-off frequencies, and then a watermark image is designed and the steering angles of the nano bricks in the nano brick array are properly adjusted; when the analyzer is rotated to another specific angle, the mixed image is superimposed with the watermark image, and the display of the original mixed image is not influenced. The invention provides a new image anti-counterfeiting mode, which can be applied to the anti-counterfeiting technology of high-end products due to high imitation difficulty and high safety. |
| priorityDate | 2019-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 17.