GB1103043A - Optical apparatus - Google Patents

Optical apparatus

Info

Publication number
GB1103043A
GB1103043A GB1105465A GB1105465A GB1103043A GB 1103043 A GB1103043 A GB 1103043A GB 1105465 A GB1105465 A GB 1105465A GB 1105465 A GB1105465 A GB 1105465A GB 1103043 A GB1103043 A GB 1103043A
Authority
GB
United Kingdom
Prior art keywords
filter
prism
polarizing
light
slit
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
GB1105465A
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.)
MARTIN CHRIST
Original Assignee
MARTIN CHRIST
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 MARTIN CHRIST filed Critical MARTIN CHRIST
Publication of GB1103043A publication Critical patent/GB1103043A/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

Abstract

1,103,043. Interferometers. M. CHRIST [trading as MARTIN CHRIST, FABRIK ELEKTROMEDIZINSCHER APPARATE]. March 16, 1965 [March 19, 1964], No.11054/65. Heading G2J. Optical apparatus comprising a light-source 1, a slit 2, a measuring cell 4, a lens 6 arranged to form an image of the slit, further includes a system for producing interference fringes, which consists of a polarizing prism 12 and a first polarizing filter 13 disposed in that order between the measuring cell 4 and the image plane 7 of the apparatus, and a second polarizing filter 9 crossed with the filter 13 and disposed between the lightsource 1 and the prism 12. When the cell 4 contains a medium whose refractive index Á varies across the light-path through the cell the interference fringes set up in the image plane constitute a direct image of the Gaussian distribution curve dÁ/dx/x of the spatial derivative of the refractive index Á across the light-path. The polarizing elements may be mounted in a common rotatable frame. In the embodiment of Fig. 3 a second polarizing prism 10 is provided between the filters 9, 13. The prism 12 and filter 9 are mounted in a rotatable frame 8 and the prism 10 and filter 13 are mounted in a second rotatable frame 11. In a further embodiment the measuring cell is positioned in a collimated beam of light. A cylindrical lens may be inserted between the filter 13 and the image plane 7 with its axis perpendicular to the slit 2.
GB1105465A 1964-03-19 1965-03-16 Optical apparatus Expired GB1103043A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC0032465 1964-03-19

Publications (1)

Publication Number Publication Date
GB1103043A true GB1103043A (en) 1968-02-14

Family

ID=7020337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1105465A Expired GB1103043A (en) 1964-03-19 1965-03-16 Optical apparatus

Country Status (1)

Country Link
GB (1) GB1103043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102279170A (en) * 2011-07-15 2011-12-14 清华大学 Integrated surface plasma refractive index sensor and detection and analysis method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102279170A (en) * 2011-07-15 2011-12-14 清华大学 Integrated surface plasma refractive index sensor and detection and analysis method thereof

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