GB1508783A - Apparatus for comparing refractive indices - Google Patents

Apparatus for comparing refractive indices

Info

Publication number
GB1508783A
GB1508783A GB1814574A GB1814574A GB1508783A GB 1508783 A GB1508783 A GB 1508783A GB 1814574 A GB1814574 A GB 1814574A GB 1814574 A GB1814574 A GB 1814574A GB 1508783 A GB1508783 A GB 1508783A
Authority
GB
United Kingdom
Prior art keywords
grating
parallel
refractive indices
cells
emerging
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
GB1814574A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Priority to GB1814574A priority Critical patent/GB1508783A/en
Publication of GB1508783A publication Critical patent/GB1508783A/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

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)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1508783 Determining refractive indices KODAK Ltd 23 May 1975 [25 April 1974] 18145/74 Heading G2J [Also in Division G1] A device for determining refractive indices comprises two parallel sided cells, shown in plan, one on top of the other in Fig. 2, whose front faces are parallel and facing the same direction, a parallel line grating 2 of such coarseness that diffraction effects are insignificant, and a source of light oblique to the front face of the cells. As shown the cells displace a light beam to different extents and therefore the emerging array of light beams from the top cell is displaced with respect to that of the lower cell. The emerging light beams are caused to pass through a second coarse grating 3 (or are reflected back through the original grating) whose lines are parallel with grating 2, and the moirÚ patterns are observed (e.g. directly or on a screen), their relative displacement being related to the refractive index difference. Several arrangements are possible. Photo-electric observation of the fringes may be employed.
GB1814574A 1975-05-23 1975-05-23 Apparatus for comparing refractive indices Expired GB1508783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1814574A GB1508783A (en) 1975-05-23 1975-05-23 Apparatus for comparing refractive indices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1814574A GB1508783A (en) 1975-05-23 1975-05-23 Apparatus for comparing refractive indices

Publications (1)

Publication Number Publication Date
GB1508783A true GB1508783A (en) 1978-04-26

Family

ID=10107425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1814574A Expired GB1508783A (en) 1975-05-23 1975-05-23 Apparatus for comparing refractive indices

Country Status (1)

Country Link
GB (1) GB1508783A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529337A1 (en) * 1982-06-24 1983-12-30 Israel Atomic Energy Comm METHOD AND APPARATUS FOR MEASURING THE REFRACTION INDEX OF FLUIDS
WO2005050179A1 (en) * 2003-11-24 2005-06-02 Qualisense Technologies Ltd. Method and system for identification of changes in fluids
WO2005101971A2 (en) * 2004-04-20 2005-11-03 Qualisense Technologies Ltd. Packaging or container with optical indicator
US20140192350A1 (en) * 2011-08-16 2014-07-10 Waters Technologies Corporation Flow Cells For Differential Refractive Index Detection

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529337A1 (en) * 1982-06-24 1983-12-30 Israel Atomic Energy Comm METHOD AND APPARATUS FOR MEASURING THE REFRACTION INDEX OF FLUIDS
WO2005050179A1 (en) * 2003-11-24 2005-06-02 Qualisense Technologies Ltd. Method and system for identification of changes in fluids
US8040498B2 (en) 2003-11-24 2011-10-18 Virtue Sense Ltd. Method and system for identification of changes in fluids
WO2005101971A2 (en) * 2004-04-20 2005-11-03 Qualisense Technologies Ltd. Packaging or container with optical indicator
WO2005101971A3 (en) * 2004-04-20 2006-06-01 Qualisense Technologies Ltd Packaging or container with optical indicator
US7999931B2 (en) 2004-04-20 2011-08-16 Virtue Sense Ltd. Packaging or container with optical indicator
US20140192350A1 (en) * 2011-08-16 2014-07-10 Waters Technologies Corporation Flow Cells For Differential Refractive Index Detection
US10151686B2 (en) * 2011-08-16 2018-12-11 Waters Technologies Corporation Flow cells for differential refractive index detection

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Legal Events

Date Code Title Description
PS Patent sealed