| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b8ec2df2063a6174332577dbb6a6fe98 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-18 |
| filingDate |
2008-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cc02fcea3bf4eb0fa2d2a1904d238ce5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43b729d132ffbd8ab029643579c7eab6 |
| publicationDate |
2009-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2009251516-A |
| titleOfInvention |
Imaging lens |
| abstract |
Provided is an imaging lens that is small and includes two lenses having good optical characteristics. A first meniscus lens having a positive power with a diaphragm and a convex surface facing the object side in order from the object side to the image surface side, and a second lens having a negative power with a biconcave shape. An imaging lens that is arranged and satisfies the following conditional expressions (1) to (3): −2.5 <f2 / f1 <−0.8 (1) 0.8 <ν1 / ν2 <1.2 (2) 0.1 <R1 / R2 ≦ 0.28 (3) However, f1: focal length of the first lens f2: focal length of the second lens ν1: Abbe number of the first lens ν2: Abbe number of the second lens R1: radius of curvature of the side surface of the first lens object R2: radius of curvature of the first lens image side surface . [Selection] Figure 1 |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103229086-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010101942-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010060887-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103229086-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103018885-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013054791-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5849171-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8422147-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2012220590-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8462448-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2012173026-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011090018-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102736216-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8520127-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8400718-B2 |
| priorityDate |
2008-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |