http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03144323-A
Outgoing Links
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|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f6e960aa6ad2ba6401030159343ebe68 |
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| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01J9-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01J3-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01J3-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01J3-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01J9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S3-00 |
| filingDate | 1989-10-30^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fba8d04dc780b515e86163bc12c31ac3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6698c1f93100e51e38582c2c78387453 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d7d9098a52831ed2c95507233a23337 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a0c62d5e7acebd26e6ee26adb72a8bf1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1af49931a48574c6b7da190d80af9e52 |
| publicationDate | 1991-06-19^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H03144323-A |
| titleOfInvention | Measuring apparatus for laser wavelength |
| abstract | PURPOSE: To detect a wavelength shift quickly by providing a means of selecting only either one of a reference light and a light to be measured, when a laser light is separated into its spectral components and a wavelength is measured. n CONSTITUTION: A light to be measured and a reference light enter as an incident light 11 on the same optical path, and it passes through a filter 12 or 13 and is separated into its spectral components by an etalon 16 and applied onto a photodetector array 18 of a measuring element through a lens 17. The filter 12 has a transmitting property in the wavelength area of the reference light and no transmitting property in the wavelength area of the light to be measured. The filter 13 has characteristics reverse to the above. The filters 12 and 13 connected in a series are switched in such a manner that they are made to move straight in the direction of traversing the optical path by a linear actuator 14. By this constitution, positions of the strongest central wavelengths of the reference light and the light to be measured are measured and stored in a driving control unit 19. Thereafter a difference in the central position is calculated and a laser oscillation unit is controlled. n COPYRIGHT: (C)1991,JPO&Japio |
| priorityDate | 1989-10-30^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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