GB705760A - Improved refractometer - Google Patents
Improved refractometerInfo
- 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
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.
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)
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)
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)
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. |
-
1951
- 1951-10-09 DE DEI4703A patent/DE931197C/en not_active Expired
- 1951-10-10 GB GB23583/51A patent/GB705760A/en not_active Expired
- 1951-10-12 FR FR1043806D patent/FR1043806A/en not_active Expired
- 1951-10-16 US US251539A patent/US2712265A/en not_active Expired - Lifetime
Cited By (1)
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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