AT89376B - Pancratic telescope. - Google Patents

Pancratic telescope.

Info

Publication number
AT89376B
AT89376B AT89376DA AT89376B AT 89376 B AT89376 B AT 89376B AT 89376D A AT89376D A AT 89376DA AT 89376 B AT89376 B AT 89376B
Authority
AT
Austria
Prior art keywords
pancratic
telescope
focal length
pancratic telescope
desc
Prior art date
Application number
Other languages
German (de)
Original Assignee
Voigtlaender & Sohn Ag
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 Voigtlaender & Sohn Ag filed Critical Voigtlaender & Sohn Ag
Priority to AT89376D priority Critical patent/AT89376B/en
Application granted granted Critical
Publication of AT89376B publication Critical patent/AT89376B/en

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  • Telescopes (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  PankratischesFernrohr. 



   Bei Fernrohren mit stark veränderlicher Vergrösserung ist die   pankratische   Wirkung bisher nur durch Anordnung zweier verschiebbarer Systeme erreichbar gewesen. da bei Anordnung nur eines beweglichen Systemes die Schärfe der Einstellung in den Zwischenstellungen verloren ging. Die Erfindung ermöglicht bei derartigen Fernrohren die Erzielung der   pankratischenWirkung   in praktisch hinreichendem
Masse mittels nur eines verschiebbaren Systemen. 



   Zu diesem Zwecke wird ein verschiebbares   Umkehrsystem angeordnet.   dessen Brennweite j im Verhältnis zu der Brennweite to des Okularsystemes (worunter das gesamte, zwischen dem beweglichen Umkehrsystem und dem Auge liegende System verstanden wird) eine möglichst geringe ist, jedenfalls aber so gering, dass der Ausdruck 
 EMI1.1 
 kleiner als 1, 5 Dioptrien wird, wobei f1 in mm gemessen sind und k das Verhältnis der stärksten zur schwächsten Vergrösserung des Fernrohres bedeutet. 



   Hierbei werden die Unschärfe so gering, dass sie nicht über   1,   5 Dioptrien hinausgehen, so dass das Fernrohr praktisch als pankratisches gelten kann. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Pancratic telescope.



   In telescopes with a greatly variable magnification, the pancratic effect has so far only been achievable by arranging two displaceable systems. because if only one movable system was arranged, the sharpness of the setting in the intermediate positions was lost. The invention enables the pancratic effect to be achieved to a practically sufficient extent in telescopes of this type
Mass by means of only one movable system.



   For this purpose a sliding reversing system is arranged. whose focal length j is as small as possible in relation to the focal length to of the ocular system (by which the entire system lying between the movable inverting system and the eye is understood), but in any case so small that the expression
 EMI1.1
 becomes smaller than 1.5 diopters, where f1 are measured in mm and k denotes the ratio of the strongest to the weakest magnification of the telescope.



   The blurring is so small that it does not exceed 1.5 diopters, so that the telescope can practically be seen as pancratic.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : EMI1.2 schiebung nur ein einziges optisches System, u. zw. ein Umkehrsystem, angeordnet ist, dessen Brennweite (f1) im Verhältnis zu der Brennweite (f2) des gesamten, zwischen ihm und dem Auge liegenden Systemes so bemessen ist, dass der Ausdruck EMI1.3 EMI1.4 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: EMI1.2 shift only a single optical system, u. between. An inversion system, is arranged, the focal length (f1) of which is dimensioned in relation to the focal length (f2) of the entire system lying between it and the eye so that the expression EMI1.3 EMI1.4 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT89376D 1920-03-05 1921-03-23 Pancratic telescope. AT89376B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89376D AT89376B (en) 1920-03-05 1921-03-23 Pancratic telescope.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT89376X 1920-03-05
AT89376D AT89376B (en) 1920-03-05 1921-03-23 Pancratic telescope.

Publications (1)

Publication Number Publication Date
AT89376B true AT89376B (en) 1922-09-11

Family

ID=25605169

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89376D AT89376B (en) 1920-03-05 1921-03-23 Pancratic telescope.

Country Status (1)

Country Link
AT (1) AT89376B (en)

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