GB1456286A - Arrangement for measuring the departure of a bundle of parallel light - Google Patents
Arrangement for measuring the departure of a bundle of parallel lightInfo
- Publication number
- GB1456286A GB1456286A GB3249374A GB3249374A GB1456286A GB 1456286 A GB1456286 A GB 1456286A GB 3249374 A GB3249374 A GB 3249374A GB 3249374 A GB3249374 A GB 3249374A GB 1456286 A GB1456286 A GB 1456286A
- Authority
- GB
- United Kingdom
- Prior art keywords
- measuring
- plane
- parallel light
- slit
- refractive index
- 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
- G01N21/4133—Refractometers, e.g. differential
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
1456286 Measuring light beam deflection refractive index CARL ZEISS JENA VEB 23 July 1974 [25 July 1973] 32493/74 Heading G1A A system for measuring deflection of a beam of parallel light has a slit 3 illuminated by source 1 and imaged in plane 6 by condensing and imaging objectives 4, 5; a further objective 10 imaging an object field 9, in the parallel beam between objectives 4 and 5, at the detector plane 8 and an optical element 7 in the image plane 6. The optical element is a glass plate with strips or edges of areas which cause a phase shift of 180 degrees and is placed in the diffraction pattern of the slit so as to maximize or minimize the light intensity at detector 8. Lateral movement of the parallel beam by an object at 9 will change the intensity at the detector and the movement can be measured either from the change or by moving a beam displacing element, either manually or automatically to compensate for the change. The system may be used to measure refractive index of a flowing liquid using a wedge shaped cell for each of a reference and the unknown liquid. Several alternative arrangements are described. A plane mirror may reflect parallel light to the collimator lens which serves also as an imaging lens and a half silvered mirror may separate the beam. Optical element and slit may be rigidly mounted together with reflection of parallel light by a mirror which is not perpendicular to the optical axis of the collimator. When measuring refractive index, the beam may be positionally restored by contrarotatable optical wedges.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD172503A DD105511A1 (en) | 1973-07-25 | 1973-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1456286A true GB1456286A (en) | 1976-11-24 |
Family
ID=5492207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3249374A Expired GB1456286A (en) | 1973-07-25 | 1974-07-23 | Arrangement for measuring the departure of a bundle of parallel light |
Country Status (5)
Country | Link |
---|---|
CS (1) | CS177983B1 (en) |
DD (1) | DD105511A1 (en) |
DE (1) | DE2422985A1 (en) |
GB (1) | GB1456286A (en) |
SE (1) | SE410047B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1645864A3 (en) * | 2004-10-07 | 2006-05-24 | Wyatt Technology Corporation | Enhanced sensitivity differential refractometer incorporating a photodetector array |
EP2667148A2 (en) | 2012-05-25 | 2013-11-27 | Polska Spólka Inzynierska DigiLab sp. z o.o. | Method and device for measurement of linear dimension of an object |
-
1973
- 1973-07-25 DD DD172503A patent/DD105511A1/xx unknown
-
1974
- 1974-05-13 DE DE2422985A patent/DE2422985A1/en not_active Withdrawn
- 1974-06-12 SE SE7407754A patent/SE410047B/en unknown
- 1974-07-02 CS CS4665A patent/CS177983B1/cs unknown
- 1974-07-23 GB GB3249374A patent/GB1456286A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1645864A3 (en) * | 2004-10-07 | 2006-05-24 | Wyatt Technology Corporation | Enhanced sensitivity differential refractometer incorporating a photodetector array |
EP2667148A2 (en) | 2012-05-25 | 2013-11-27 | Polska Spólka Inzynierska DigiLab sp. z o.o. | Method and device for measurement of linear dimension of an object |
Also Published As
Publication number | Publication date |
---|---|
SE7407754L (en) | 1975-01-27 |
CS177983B1 (en) | 1977-08-31 |
DD105511A1 (en) | 1974-04-20 |
SE410047B (en) | 1979-09-17 |
DE2422985A1 (en) | 1975-02-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |