http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2116532-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2ed48e6f380efa8ce111f07a3b8b2171 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02C7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A63B33-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B63C11-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B63C11-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A63B33-00 |
| filingDate | 1992-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3dc81249d8dc5b6b8a51970164788f6 |
| publicationDate | 1993-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2116532-A1 |
| titleOfInvention | Diving mask with lenses and method of fabricating the same |
| abstract | A diving mask (10) having hemispherically-shaped lenses (12) mounted on a flexible gasket or portion (14) and fitted to the contours of a user's face (16). Laser scanning or topographic mapping is used to determine the contours of the user's face (16). The hemispherically-shaped lenses (12) are then sized to fit the contours of the face (16). As a result, the spherical center of the lenses substantially coincides with the optical nodal point (26) of the user's eyes (24). The hemispherically-shaped lenses (12) may also be designed so that the spherical center of curvature of the hemispherically-shaped lenses (12) substantially coincides with the center of rotation (150) of a user's eyes (24). This virtually eliminates the phenomenon of underwater magnification-distortion caused by the difference in refractive indices of water and air. |
| priorityDate | 1991-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.