DE82523C - - Google Patents

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Publication number
DE82523C
DE82523C DE189482523D DE82523DD DE82523C DE 82523 C DE82523 C DE 82523C DE 189482523 D DE189482523 D DE 189482523D DE 82523D D DE82523D D DE 82523DD DE 82523 C DE82523 C DE 82523C
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DE
Germany
Prior art keywords
prisms
field
polarizer
view
division
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
DE189482523D
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German (de)
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.)
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Publication date
Application filed filed Critical
Application granted granted Critical
Publication of DE82523C publication Critical patent/DE82523C/de
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J4/00Measuring polarisation of light
    • G01J4/02Polarimeters of separated-field type; Polarimeters of half-shadow type

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Bei den bekannten Halbschatten-Polarisationsapparaten wird das Gesichtsfeld des Apparates in zwei Hälften getheilt, die beide etwas verschiedene Polarisationsebenen haben. Ein dagegen gestelltes Nikol braucht zur totalen Auslöschung zwei verschiedene Stellungen, in deren Mittellage beide Hälften gleiche Helligkeit zeigen. Diese Erscheinung bezeichnet man mit Halbschatten.In the case of the known penumbra polarization apparatus, the field of view of the apparatus is divided into two halves, both of which have somewhat different planes of polarization. One against The posed Nikol needs two different positions for total extinction, in whose central position both halves show the same brightness. This phenomenon is called with partial shade.

Durch den auf der beiliegenden Zeichnung dargestellten Polarisator findet eine Drei- oder Mehrth eilung des Gesichtsfeldes statt. Zu diesem Zwecke wird z. B. bei einer Dreitheilung der Polarisator aus drei Prismen hergestellt, vor deren einem a die beiden einander gleichen Prismen b b seitlich vorgesehen sind, wie am besten Fig. 2 und . 3 in zwei verschiedenen Ausführungen zeigen.With the polarizer shown in the accompanying drawing, the field of view is divided into three or more parts. For this purpose z. B. prepared at a threefold division of the polarizer of three prisms, a bb prior to a two mutually identical prisms are provided laterally, as best seen Fig. 2, and. 3 show in two different versions.

Durch diese Anordnung wird eine Fläche zwischen zwei gleichen Flächen zu gleicher Helligkeit gebracht und dadurch die Empfindlichkeit bedeutend erhöht.With this arrangement, an area between two identical areas becomes the same Bringing brightness and thereby significantly increasing sensitivity.

Durch Anordnung eines aus noch mehr Prismen bestehenden Polarisators läfst sich entsprechend eine mehrfache Theilung des Gesichtsfeldes erzielen.By arranging a polarizer consisting of even more prisms, this can be done accordingly achieve a multiple division of the field of vision.

Claims (1)

Patent-Anspruch:Patent claim: Ein Halbschatten-Polarisator, der behufs drei- und mehrfacher Theilung des Gesichtsfeldes aus mehr als zwei Prismen (a b b) besteht. A penumbra polarizer consisting of more than two prisms (fig) for the purpose of three or more division of the field of view. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DE189482523D 1894-06-29 1894-06-29 Expired DE82523C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE82523T 1894-06-29

Publications (1)

Publication Number Publication Date
DE82523C true DE82523C (en) 1895-07-30

Family

ID=34624701

Family Applications (1)

Application Number Title Priority Date Filing Date
DE189482523D Expired DE82523C (en) 1894-06-29 1894-06-29

Country Status (1)

Country Link
DE (1) DE82523C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668470A (en) * 1948-05-13 1954-02-09 Karl A Fischer Method and apparatus for electroptical analysis of the crystalline content of liquids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668470A (en) * 1948-05-13 1954-02-09 Karl A Fischer Method and apparatus for electroptical analysis of the crystalline content of liquids

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