http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101806956-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be055db3c1a09879df07379ba969e223 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B13-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B25-001 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B25-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N5-225 |
| filingDate | 2009-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cef9389de540ee9b0b03d683bb142ff1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_709118f9da95e8c14503a2309adfd442 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f8a1f0024543e42d35f38ff487868adc |
| publicationDate | 2013-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-101806956-B |
| titleOfInvention | Eyepiece lens system, finder optical system, and electronic viewfinder of imaging apparatus and imaging apparatus |
| abstract | An eyepiece lens system for an electronic viewfinder, usable to be disposed on an optical axis between a reflective LCD of the viewfinder and a last optical surface of the viewfinder, the eyepiece lens system comprising: a first lens having a positive refractive index; a second lens having a negative refractive index; and a third lens having a positive refractive index, wherein the first lens, the second lens, and the third lens are disposed in this order from a side of the LCD to a side of the last optical surface, satisfying the conditions: 18 mm<f1<20 mm, -18 mm<f2<-16 mm, 18 mm<f3<20 mm, 19 mm<f<21 mm, and 0!<=HH'/f<+0.13 where f1 is a focal length of the first lens, f2 is a focal length of the second lens, f3 is a focal length of the third lens, f is a combined focal length of the first to the third lenses, and HH' is distance in an optical axis direction between a rear principal point H and a front principal point H'. |
| priorityDate | 2008-10-29-04:00^^<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/CID22138115 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID412232904 |
Total number of triples: 19.