| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be055db3c1a09879df07379ba969e223 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2007-0006 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1353
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B5-1871
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1275 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-125 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-18 |
| filingDate |
2002-10-04^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc7be4de6a81b0020055e9e95d15d942
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a8ae5bfff015d1a85f5fd320776301e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b0e7fc574b26cb990e3f71b35ad92005 |
| publicationDate |
2003-04-14^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20030029506-A |
| titleOfInvention |
Diffraction optical element and optical head using the same |
| abstract |
Diffraction that emits substantially zero-order diffracted light when light having a wavelength of 0.35 μm to 0.45 μm is incident, and emits first-order diffracted light when light having a wavelength of 0.6 μm to 0.7 μm is incident An optical element is provided.n n n It is a rotational optical element provided with the board | substrate 1a and the grating part 2a formed on the board | substrate 1a. The cross section of the grating portion 2a is substantially a step shape of any of four, five, or six levels, and the light 3 of the first wavelength λ1 satisfying 0.35 μm ≦ λ1 ≦ 0.45 μm is incident. In this case, substantially diffracted light 6 of the 0th order is emitted, and when the light 4 of the second wavelength [lambda] 2 satisfying 0.6 [mu] m? 7) Exit. |
| priorityDate |
2001-10-05^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |