http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2323474-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4f7f045f7b822b5d613e987ae2209b46 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03H2250-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03H1-0244 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03H2240-23 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03H1-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03H1-0252 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03H1-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03H1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-24003 |
| filingDate | 1999-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2006-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b03dc183403c934bf92de2c60120067 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d9df47a672f7dca3f7d94cc787c96c5e |
| publicationDate | 2006-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2323474-C |
| titleOfInvention | Transparent and semitransparent diffractive elements, particularly holograms and their making process |
| abstract | Transparent and semitransparent diffractive elements, particularly holograms with a diffractive pattern created at least in one of two following layers with different index of refraction: a transparent bearing layer (1) from polymer or copolymer having index of refraction n < 1,7, and a holographic effect-enhancing, high refraction index layer (2) formed by chalcogenide based substances comprising at least one element from the group sulphur, selenium, tellurium, said layer (2) has n > 1,7 and its melting temperature is lower than 900 °C, whereas said substances forming said layer (2) can be binary, ternary and even more complex chalcogenides and/or chalcohalides and/or interchalcogenides systems comprising besides S or Se or Te as a more electropositive element at least one of the following elements of I. tiII V. group periodical table of the elements Cu, Ag, Au, Hg, B, Al, Ga, In, TI, Si, Ge, Sn, Pb, N, P, As, Sb, Bi. Said chalcogenide based substances can further contain at least one transient metal and/or rear earth element. Transparent and semitransparent diffractive element can further contain a protective layer (6) and/or an adhesive layer (7) and /or a fragile layer (8) and/or an anchoring layer (9). The diffractive pattern is formed in said bearing layer (1) and subsequently a said high refraction index layer (2) is deposited on the said layer (1), whereas said layer (2) comprising one or more layers chalcogenide based substances of different composition, which can be deposited subsequently or simultaneously. High refraction index layer (2) can be deposited on the transparent bearing layer (1) and only after that a diffractive pattern is mechanically formed in said high refraction index layer (2). High refraction index layer (2) can be deposited on said bearing layer (1) coloured in advance. High refraction index layer (2) can be deposited at low pressure e.g. using vacuum evaporation, sputtering or chemical vapour deposition (CVD) technique. High refraction index layer (2) can be deposited at normal pressure as a solution of chalcogenide based substances using e.g. spraying, painting or spin coating method. Chalcogenide based high refraction index layer (2) is modified by exposure or annealing induced metal diffusion and/or by halogen and/or oxygen which are implanted into said chalcogenide based high refraction index layer (2) by its interaction with halogene vapours or interaction with oxygen or through air hydrolysis. Diffractive pattern formed in said bearing layer (1) and/or in high refraction index layer (2) can be further modified by exposure to radiation and/or annealing and/or selective etching. |
| priorityDate | 1998-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.