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GB8920366D0 - Optical measuring instruments - Google Patents

Optical measuring instruments

Info

Publication number
GB8920366D0
GB8920366D0 GB898920366A GB8920366A GB8920366D0 GB 8920366 D0 GB8920366 D0 GB 8920366D0 GB 898920366 A GB898920366 A GB 898920366A GB 8920366 A GB8920366 A GB 8920366A GB 8920366 D0 GB8920366 D0 GB 8920366D0
Authority
GB
United Kingdom
Prior art keywords
optical measuring
measuring instruments
instruments
optical
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB898920366A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BIRCH KEITH P
Original Assignee
BIRCH KEITH P
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BIRCH KEITH P filed Critical BIRCH KEITH P
Priority to GB898920366A priority Critical patent/GB8920366D0/en
Publication of GB8920366D0 publication Critical patent/GB8920366D0/en
Priority to PCT/GB1990/001393 priority patent/WO1991003729A1/fr
Priority to GB9019648A priority patent/GB2236181B/en
Priority to EP19900913515 priority patent/EP0490957A1/fr
Priority to JP2512638A priority patent/JPH05500419A/ja
Pending legal-status Critical Current

Links

GB898920366A 1989-09-08 1989-09-08 Optical measuring instruments Pending GB8920366D0 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB898920366A GB8920366D0 (en) 1989-09-08 1989-09-08 Optical measuring instruments
PCT/GB1990/001393 WO1991003729A1 (fr) 1989-09-08 1990-09-07 Appareil mesurant l'indice de refraction des milieux gazeux
GB9019648A GB2236181B (en) 1989-09-08 1990-09-07 Optical measuring instruments
EP19900913515 EP0490957A1 (fr) 1989-09-08 1990-09-07 Appareil mesurant l'indice de refraction des milieux gazeux
JP2512638A JPH05500419A (ja) 1989-09-08 1990-09-07 気体媒体の屈折率を測定するための装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898920366A GB8920366D0 (en) 1989-09-08 1989-09-08 Optical measuring instruments

Publications (1)

Publication Number Publication Date
GB8920366D0 true GB8920366D0 (en) 1989-10-25

Family

ID=10662775

Family Applications (2)

Application Number Title Priority Date Filing Date
GB898920366A Pending GB8920366D0 (en) 1989-09-08 1989-09-08 Optical measuring instruments
GB9019648A Expired - Fee Related GB2236181B (en) 1989-09-08 1990-09-07 Optical measuring instruments

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9019648A Expired - Fee Related GB2236181B (en) 1989-09-08 1990-09-07 Optical measuring instruments

Country Status (4)

Country Link
EP (1) EP0490957A1 (fr)
JP (1) JPH05500419A (fr)
GB (2) GB8920366D0 (fr)
WO (1) WO1991003729A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009394A1 (fr) * 1991-11-08 1993-05-13 British Technology Group Ltd. Instruments de mesure
US6330065B1 (en) 1997-10-02 2001-12-11 Zygo Corporation Gas insensitive interferometric apparatus and methods
US6219144B1 (en) 1997-10-02 2001-04-17 Zygo Corporation Apparatus and method for measuring the refractive index and optical path length effects of air using multiple-pass interferometry
US6124931A (en) * 1997-10-02 2000-09-26 Zygo Corporation Apparatus and methods for measuring intrinsic optical properties of a gas
WO1999018424A1 (fr) * 1997-10-02 1999-04-15 Zygo Corporation Procede et appareil interferometriques
KR100418727B1 (ko) * 1998-02-23 2004-02-18 지고 코포레이션 가스의 고유한 광학적 성질을 측정하는 장치 및 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455271A1 (fr) * 1979-04-24 1980-11-21 Electricite De France Procede de mesure du taux de fuite d'une enceinte etanche sous pression par variation de l'indice de refraction, et dispositif de mise en oeuvre
US4571082A (en) * 1982-05-18 1986-02-18 Downs Michael J Apparatus and method for measuring refractive index
US4558952A (en) * 1983-02-22 1985-12-17 Kules Vladimir P Method for measuring an optical length of light path and a laser interferometer for carrying same into effect
DE3414261A1 (de) * 1984-04-14 1985-10-24 Fa. Carl Zeiss, 7920 Heidenheim Interferenz-refraktometer

Also Published As

Publication number Publication date
JPH05500419A (ja) 1993-01-28
EP0490957A1 (fr) 1992-06-24
GB2236181B (en) 1993-07-28
WO1991003729A1 (fr) 1991-03-21
GB9019648D0 (en) 1990-10-24
GB2236181A (en) 1991-03-27

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