DE82523C - - Google Patents
Info
- 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
- Authority
- 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
Links
- 230000010287 polarization Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J4/00—Measuring polarisation of light
- G01J4/02—Polarimeters of separated-field type; Polarimeters of half-shadow type
Landscapes
- 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)
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)
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 |
-
1894
- 1894-06-29 DE DE189482523D patent/DE82523C/de not_active Expired
Cited By (1)
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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