Interferometric position sensor

An interferometric position sensor comprises a light source 110, a beam splitter 134 and a detector array 170. The beam splitter splits light between two paths and an interference pattern 180 is formed based on a difference in length between the two paths. At least one of the paths is dependent on t...

Full description

Saved in:
Bibliographic Details
Main Authors Christopher Ralph Carter, Ross Matthew Williams
Format Patent
LanguageEnglish
Published 09.05.2018
Subjects
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
Online AccessGet full text

Cover

Abstract An interferometric position sensor comprises a light source 110, a beam splitter 134 and a detector array 170. The beam splitter splits light between two paths and an interference pattern 180 is formed based on a difference in length between the two paths. At least one of the paths is dependent on the position of an object 10 such that changes in the interference pattern are related to changes in the position of the object. The beam splitter is formed as a beam splitting surface of a prism, the other surface 136 of the prism being fully reflecting. This surface 136 fulfils the function of a reference mirror in a conventional interferometer. The interferometric position sensor therefore does not require a reference mirror, avoiding errors caused by a changing distance between the beam splitter and the reference mirror. The object 10 for which position is sensed may have an attached retroreflector 150.
AbstractList An interferometric position sensor comprises a light source 110, a beam splitter 134 and a detector array 170. The beam splitter splits light between two paths and an interference pattern 180 is formed based on a difference in length between the two paths. At least one of the paths is dependent on the position of an object 10 such that changes in the interference pattern are related to changes in the position of the object. The beam splitter is formed as a beam splitting surface of a prism, the other surface 136 of the prism being fully reflecting. This surface 136 fulfils the function of a reference mirror in a conventional interferometer. The interferometric position sensor therefore does not require a reference mirror, avoiding errors caused by a changing distance between the beam splitter and the reference mirror. The object 10 for which position is sensed may have an attached retroreflector 150.
Author Christopher Ralph Carter
Ross Matthew Williams
Author_xml – fullname: Christopher Ralph Carter
– fullname: Ross Matthew Williams
BookMark eNrjYmDJy89L5WSQ98wrSS1KSy3Kz00tKcpMVijIL84syczPUyhOzSvOL-JhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfHuTkampqZmJmaOxoRVAACtcyZz
ContentType Patent
DBID EVB
DatabaseName esp@cenet
DatabaseTitleList
Database_xml – sequence: 1
  dbid: EVB
  name: esp@cenet
  url: http://worldwide.espacenet.com/singleLineSearch?locale=en_EP
  sourceTypes: Open Access Repository
DeliveryMethod fulltext_linktorsrc
Discipline Medicine
Chemistry
Sciences
Physics
ExternalDocumentID GB2555646A
GroupedDBID EVB
ID FETCH-epo_espacenet_GB2555646A3
IEDL.DBID EVB
IngestDate Fri Jul 19 12:56:37 EDT 2024
IsOpenAccess true
IsPeerReviewed false
IsScholarly false
Language English
LinkModel DirectLink
MergedId FETCHMERGED-epo_espacenet_GB2555646A3
Notes Application Number: GB20160018796
OpenAccessLink https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180509&DB=EPODOC&CC=GB&NR=2555646A
ParticipantIDs epo_espacenet_GB2555646A
PublicationCentury 2000
PublicationDate 20180509
PublicationDateYYYYMMDD 2018-05-09
PublicationDate_xml – month: 05
  year: 2018
  text: 20180509
  day: 09
PublicationDecade 2010
PublicationYear 2018
RelatedCompanies MBDA UK Limited
RelatedCompanies_xml – name: MBDA UK Limited
Score 3.1499412
Snippet An interferometric position sensor comprises a light source 110, a beam splitter 134 and a detector array 170. The beam splitter splits light between two paths...
SourceID epo
SourceType Open Access Repository
SubjectTerms MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
Title Interferometric position sensor
URI https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180509&DB=EPODOC&locale=&CC=GB&NR=2555646A
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
link http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwdV1LT8MwDLbGeN6ggMZzPaDeKrYmzdpDhehrE9IeQgPtNuGs1bhs01rE38eJWuCyYxzJSSw5thP7M8ADk8KX_oe0UXjc5j0ubERvQcMMXczJpOl2QMORGLzxl5k7a8CyroXROKHfGhyRNEqSvpf6vt78PWLFOreyeMRPIq2f0mkQW1V03PUUnIkVh0EyGcfjyIqioB9ao9eAPGdXcPG8B_vKiVYo-8l7qGpSNv8NSnoKBxPitSrPoJGtDDiO6r5rBhwNq-9uAw51fqYsiFjpYHEObf2Il2cKZ0DB65t13pVZUEi63l5AO02m0cCmNee_x5v3w3pz7BKaFPRnLTAdN--ig8gU_HzHXWDukLXNmddhjMtO7wpau7hc7566gRMlJJ2w599Cs9x-ZXdkVEu81_L4AcQUezI
link.rule.ids 230,309,786,891,25594,76903
linkProvider European Patent Office
linkToHtml http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwdV1LT4NAEJ7U-qg3RU19wsFwI1JYFjgQI1CKWmhj0PTWuBSil7YpGP--sxtQLz3ubDL7SGZnv9mZbwFuzZy6ufuea4w6RCM2oRpjzgKbBbNYiS5NfAeUpDR-JU8za9aBj7YWRvCEfgtyRLSoHO29Fuf1-i-IFYrcyuqOfaJodR9lXqg26HjgcDoTNfS94XQSTgI1CLyRr6YvHt6cLUroww7s2ggIBVB683lNyvq_Q4mOYG-Kupb1MXSKpQS9oP13TYKDpHnulmBf5GfmFQobG6xOQBZBvLLgPAOcXl9p866UCiHpanMKcjTMgljDMee_y5uP_HZy5hl0EfQXfVAMqxwwgzGT08_r1oKVBnrb0nR00yS5bp9Df5uWi-1dMvTiLBnPx4_p8yUc8g0TyXvuFXTrzVdxjQ62Zjdib34AqzZ-HA
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.title=Interferometric+position+sensor&rft.inventor=Christopher+Ralph+Carter&rft.inventor=Ross+Matthew+Williams&rft.date=2018-05-09&rft.externalDBID=A&rft.externalDocID=GB2555646A