GB1373645A - Interferometers - Google Patents

Interferometers

Info

Publication number
GB1373645A
GB1373645A GB1447371A GB1447371A GB1373645A GB 1373645 A GB1373645 A GB 1373645A GB 1447371 A GB1447371 A GB 1447371A GB 1447371 A GB1447371 A GB 1447371A GB 1373645 A GB1373645 A GB 1373645A
Authority
GB
United Kingdom
Prior art keywords
fibre optic
light
adjusted
output
interferometer
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.)
Expired
Application number
GB1447371A
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.)
Rank Organization Ltd
Original Assignee
Rank Organization Ltd
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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB1447371A priority Critical patent/GB1373645A/en
Publication of GB1373645A publication Critical patent/GB1373645A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02049—Interferometers characterised by particular mechanical design details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)

Abstract

1373645 Interferometers RANK ORGANISATION Ltd 11 May 1972 [12 May 1971] 14473/71 Heading G2J In optical alignment apparatus a laser 12 is mounted separately from an interferometric system 14, 15. In one embodiment misalignment of the laser beam and the system 14 is adjusted at 18 by a pair of triangular prisms each arranged to deflect the light through 90 degrees Fig. 4a (not shown) and each prism being rotatable about an axis parallel to the direction of light incident upon it; or is adjusted by relatively movable plano-concave and convex-plano lenses; or is adjusted by a pair of wedge-shaped prisms with adjacent spaces parallel, each prism being rotatable about an axis parallel to the direction of incident light. In a second embodiment the adjustment is effected through a flexible fibre optic 27 connecting the laser output to the system 14. The fibre optic maintains the spatial coherence of the light. The output from the interferometer system may be electrically detected and fed to an indicator 21, to show a fringe count. If desired the photoelectric transducer 19 may be mounted away from the interferometer system to which it is connected by a second flexible fibre optic 32. The laser beam may be focused on to the fibre optic by a lens 28 and a further lens system 29 may be used to couple the fibre optic output on to the interferometer.
GB1447371A 1972-05-11 1972-05-11 Interferometers Expired GB1373645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1447371A GB1373645A (en) 1972-05-11 1972-05-11 Interferometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1447371A GB1373645A (en) 1972-05-11 1972-05-11 Interferometers

Publications (1)

Publication Number Publication Date
GB1373645A true GB1373645A (en) 1974-11-13

Family

ID=10041828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1447371A Expired GB1373645A (en) 1972-05-11 1972-05-11 Interferometers

Country Status (1)

Country Link
GB (1) GB1373645A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153370A (en) * 1977-12-05 1979-05-08 The United States Of America As Represented By The United States Department Of Energy Microinterferometer transducer
US4420260A (en) * 1981-05-06 1983-12-13 Cise - Centro Informazioni Studi Esperienze S.P.A. Interferometer transmitting the useful phase information through optical fibres
US4596466A (en) * 1980-11-24 1986-06-24 Reinhard Ulrich Method for the measurement of lengths and displacements
US4647206A (en) * 1983-09-23 1987-03-03 Carl-Zeiss-Stiftung Multi-coordinate measuring machine
EP0289225A2 (en) * 1987-04-29 1988-11-02 Hewlett-Packard Company A receiver for laser interferometer systems

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153370A (en) * 1977-12-05 1979-05-08 The United States Of America As Represented By The United States Department Of Energy Microinterferometer transducer
US4596466A (en) * 1980-11-24 1986-06-24 Reinhard Ulrich Method for the measurement of lengths and displacements
US4420260A (en) * 1981-05-06 1983-12-13 Cise - Centro Informazioni Studi Esperienze S.P.A. Interferometer transmitting the useful phase information through optical fibres
US4647206A (en) * 1983-09-23 1987-03-03 Carl-Zeiss-Stiftung Multi-coordinate measuring machine
EP0289225A2 (en) * 1987-04-29 1988-11-02 Hewlett-Packard Company A receiver for laser interferometer systems
US4784489A (en) * 1987-04-29 1988-11-15 Hewlett-Packard Company Fiber-optic based remote receiver for laser interferometer systems
EP0289225A3 (en) * 1987-04-29 1989-11-29 Hewlett-Packard Company A receiver for laser interferometer systems

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees