GB462332A - Improvements in refractometers - Google Patents

Improvements in refractometers

Info

Publication number
GB462332A
GB462332A GB2506335A GB2506335A GB462332A GB 462332 A GB462332 A GB 462332A GB 2506335 A GB2506335 A GB 2506335A GB 2506335 A GB2506335 A GB 2506335A GB 462332 A GB462332 A GB 462332A
Authority
GB
United Kingdom
Prior art keywords
prism
mirror
scale
lens
face
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
GB2506335A
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.)
ALBERT JONAH BATEMAN
ERNEST NOEL HOBSON
RAYNER OPTICAL Co Ltd
Original Assignee
ALBERT JONAH BATEMAN
ERNEST NOEL HOBSON
RAYNER OPTICAL Co 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 ALBERT JONAH BATEMAN, ERNEST NOEL HOBSON, RAYNER OPTICAL Co Ltd filed Critical ALBERT JONAH BATEMAN
Priority to GB2506335A priority Critical patent/GB462332A/en
Publication of GB462332A publication Critical patent/GB462332A/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
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle

Abstract

462,332. Refractometers. RAYNOR OPTICAL CO., Ltd., HOBSON, E. N., and BATEMAN, A. J. Sept. 9, 1935, No. 25063. [Class 97 (i)] A refractometer of the critical angle type comprises a small refracting prism of high refractive index, a lens close to the exit face of the prism, an optical viewing system comprising one or more lenses and a mirror or reflecting prism, and a scale of which an image is formed in the eyepiece. As shown, the apparatus comprises a casing 1 having a window 3 admitting light to the small prism 10, the optically flat face 11 of which projects through a slot in a wall 7 of the casing. Light internally reflected by the face 11 emerges from the optically flat face 12 and is received by a lens 15 having a plane surface 16 adjacent the prism, and a curved surface 17. The viewing system comprises an eyepiece 6, a lens 20 and a mirror 22. A scale plate 24 is mounted below the mirror and is seen along one side thereof, which is left unsilvered. Alternatively, the whole of the mirror may be thinly silvered so as to transmit light from the scale. The substance 35 of which the refractive index is to be measured is placed in contact with the face 11 of the prism 10. In a modification, the scale is placed between the lens 20 and a further lens, and the mirror is replaced by a reflecting prism which forms an image of the scale in the field of view.
GB2506335A 1935-09-09 1935-09-09 Improvements in refractometers Expired GB462332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2506335A GB462332A (en) 1935-09-09 1935-09-09 Improvements in refractometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2506335A GB462332A (en) 1935-09-09 1935-09-09 Improvements in refractometers

Publications (1)

Publication Number Publication Date
GB462332A true GB462332A (en) 1937-03-08

Family

ID=10221603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2506335A Expired GB462332A (en) 1935-09-09 1935-09-09 Improvements in refractometers

Country Status (1)

Country Link
GB (1) GB462332A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633052A (en) * 1949-11-19 1953-03-31 Zeiss Opton Optische Werke Refractometer with fixed viewing system and prism
US2740320A (en) * 1954-10-22 1956-04-03 Bausch & Lomb Refractometer
US4640616A (en) * 1984-12-06 1987-02-03 The Cambridge Instrument Company Plc Automatic refractometer
US7492447B2 (en) 2002-10-30 2009-02-17 Atago Co., Ltd. Refractometer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633052A (en) * 1949-11-19 1953-03-31 Zeiss Opton Optische Werke Refractometer with fixed viewing system and prism
US2740320A (en) * 1954-10-22 1956-04-03 Bausch & Lomb Refractometer
US4640616A (en) * 1984-12-06 1987-02-03 The Cambridge Instrument Company Plc Automatic refractometer
US7492447B2 (en) 2002-10-30 2009-02-17 Atago Co., Ltd. Refractometer

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