http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2505546-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1073f7005651276d4be7bc5ecde9b44a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B3-1208 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B3-1035 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B3-103 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B3-12 |
| filingDate | 2013-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5dd2a83e8b4cc23fe337deb760de81a8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_82b3a9de23341c85fdad718c1dac5f89 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d5b238a05291f1e90b6e35b474fd87af http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_865888c44792b35177c45720af1140ec http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00799374579009c62c363e80796366e6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_478828660391b0cb75ee50bd5c5d9755 |
| publicationDate | 2014-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2505546-A |
| titleOfInvention | Retinoscope with condensing lens column |
| abstract | A retinoscope for detecting eye ametropia and astigmatism axes is disclosed in the invention, which comprises an illuminating and imaging system comprising an illumination light source 1, a projecting mirror 4 and a half transparent and half reflecting mirror 5 arranged sequentially along the direction of propagation of the illumination light, the respective optical axes O,O1 of the projecting mirror 4 and half transparent and half reflecting mirror 5 are collinear with each other, and the reflecting plane of the half transparent and half reflecting mirror 5 is at an angle of 45° relative to the illumination optical axis O,O1, wherein a condensing lens column 2 and a retinoscopy diaphragm 3 are disposed sequentially along the illumination optical axis O,O1, between the illumination light source 1 and the projecting mirror 4, the optical axis of the condensing lens column 2 is coincident with the illumination optical axis O,O1, and the plane of the retinoscopy diaphragm 3 is perpendicular to the illumination optical axis O,O1. The light energy can be utilized effectively in the retinoscope of the invention by arranging a condensing lens column 2 between the illumination light source 1 and the retinoscopy diaphragm 3, and the imaging of the strip light or spot light from the retinoscopy diaphragm 3 has more clear and uniform boundary. Furthermore, the retinoscope with such illumination and imaging system has compact configuration. Additionally, better color vision can be achieved if a colored light source is utilized, such as a red or green light source, thus, the imaging can be distinguished more easily by a user. |
| priorityDate | 2012-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID23991 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419569950 |
Total number of triples: 21.