http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114137640-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e1ab596b7f17efc547f6a804c18bd1a4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-041 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02C7-022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B3-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-04 |
| filingDate | 2021-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac33d8037349447b8c3734617cad7479 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_266d342d4153e9d53c8348b8eb25c42c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7def3af5971e8ecc418319d1a47fa567 |
| publicationDate | 2022-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114137640-A |
| titleOfInvention | Freeform Lenses, Fresnel Lenses and Wearable Devices |
| abstract | The invention discloses a free-form surface lens, a Fresnel lens and a wearable device. The free-form surface lens comprises: a first surface and a second surface arranged opposite to each other, and the second surface faces the first surface For the concave surface of the concave, a Cartesian coordinate system is established with the point with the shortest distance between the second surface and the first surface as the origin O, and the intersection of the second surface and the XOZ surface is the first arc of radius R 1 , the The second arc of the radius R 2 of the intersection of the second face and the YOZ face, the face type of the second face can be shown by the formula. The free-form surface lens according to the present invention is used for correcting human eyesight, reducing the thickness of the lens, reducing the weight of the lens, reducing the manufacturing difficulty of the free-form surface lens and improving the accuracy of the lens. |
| priorityDate | 2021-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.