| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2258615b3f57aa14f910395c862a110e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-125 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-125 |
| filingDate |
1990-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_04e774b628dd999ade463990490af95e |
| publicationDate |
1990-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-4006286-A1 |
| titleOfInvention |
OPTICAL INFORMATION DISPLAY DEVICE |
| abstract |
The optical system for use in a video disc or digital audio disc player has a laser source (1), a beam splitter (2), a lens with a servoactuator (6), a photo-detector (5) and a screening plate (9). The screening plate has a needle sized aperture that provides blocking of any unwanted optical component of reflected light from the surface of the disc (4) from reading the photo-detector. In this way the aperture ensures that components from side tracks are not received. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1103960-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0444766-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0444766-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1103960-A2 |
| priorityDate |
1989-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |