GB705760A - Improved refractometer - Google Patents

Improved refractometer

Info

Publication number
GB705760A
GB705760A GB23583/51A GB2358351A GB705760A GB 705760 A GB705760 A GB 705760A GB 23583/51 A GB23583/51 A GB 23583/51A GB 2358351 A GB2358351 A GB 2358351A GB 705760 A GB705760 A GB 705760A
Authority
GB
United Kingdom
Prior art keywords
image
slit
plate
receptacle
media
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
GB23583/51A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB705760A publication Critical patent/GB705760A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods
    • G01N21/455—Schlieren methods, e.g. for gradient index determination; Shadowgraph

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

705,760. Refractometers. INGELSTAM, E. Oct. 10, 1951 (Nov. 7, 1950], No. 23583/51. Class 97(1) A refractometer for gaseous and liquid media comprises an optical system including a linear lightentrance slit, a receptacle for receiving and locating the medium to be tested between two portions of a reference medium; the separating boundaries being parallel to the slit, a phase contrast element having a portion on which an image of the slit is formed and by means of which a phase contrast image of the media is produced, the measurements of intensity variations of which give a measure of the refractive index differences between the two media. As shown the receptacle k is found between two plano-convex lenses which image the illuminated slit S on the phase element F. The latter comprises a plate a, Fig. 2, having a non-reflecting coating b on one side and being polished on the other and bearing a metallic film, of thickness e, corresponding to the image of the slit. Alternatively the plate may be coated with metal except in the parts corresponding to the slit image. Light reflected from this plate passes to a lens L forming an image of the receptacle on a screen B which image may be explored by a photographic plate or by a movable photo-multiplicator cell C connected to a recorder R. A graded wedge T may be provided; an image of which is formed on the screen B to allow visual comparisons of light intensities and polarizers P and A may be provided to effect variations of intensity to assist measurement.
GB23583/51A 1950-11-07 1951-10-10 Improved refractometer Expired GB705760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE705760X 1950-11-07

Publications (1)

Publication Number Publication Date
GB705760A true GB705760A (en) 1954-03-17

Family

ID=20315588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23583/51A Expired GB705760A (en) 1950-11-07 1951-10-10 Improved refractometer

Country Status (4)

Country Link
US (1) US2712265A (en)
DE (1) DE931197C (en)
FR (1) FR1043806A (en)
GB (1) GB705760A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1134843B (en) * 1955-04-28 1962-08-16 Perkin Elmer Corp Measuring arrangement for refractive indices

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468607A (en) * 1966-12-06 1969-09-23 Hawaiian Sugar Planters Assoc Apparatus for the continuous analysis of a liquid stream containing dissolved solids of which a portion are optically active in solution
US3617130A (en) * 1969-12-10 1971-11-02 Us Air Force Simplified schlieren system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR923701A (en) * 1946-02-14 1947-07-16 Method allowing, thanks to the variation of orientation of a light sheet, to study by reading a direct curve a phenomenon whose variables are measured on parallel or coincident coordinate axes
NL142357B (en) * 1948-05-31 Teijin Ltd RUBBER OBJECT, REINFORCED USING WIRES FROM AN ALMOST LINEAR IN MAIN PROPERTY POLY (ETHYLENE-NAFTALENE-2,6-DICARBON ACID) ESTER.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1134843B (en) * 1955-04-28 1962-08-16 Perkin Elmer Corp Measuring arrangement for refractive indices

Also Published As

Publication number Publication date
DE931197C (en) 1955-08-04
FR1043806A (en) 1953-11-12
US2712265A (en) 1955-07-05

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