AT92128B - Spherically, chromatically and astigmatically corrected distance lens. - Google Patents

Spherically, chromatically and astigmatically corrected distance lens.

Info

Publication number
AT92128B
AT92128B AT92128DA AT92128B AT 92128 B AT92128 B AT 92128B AT 92128D A AT92128D A AT 92128DA AT 92128 B AT92128 B AT 92128B
Authority
AT
Austria
Prior art keywords
sep
chromatically
spherically
corrected distance
distance lens
Prior art date
Application number
Other languages
German (de)
Original Assignee
Zeiss Carl Fa
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 Zeiss Carl Fa filed Critical Zeiss Carl Fa
Application granted granted Critical
Publication of AT92128B publication Critical patent/AT92128B/en

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  • Glass Compositions (AREA)
  • Lenses (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Sphärisch,     chromatisch   und astigmatisch korrigiertes Fernobjektiv. 



   Durch die dem Hauptpatent zugrunde liegendeErfmdung wurde   einphotographischesFernobjektiv   zur Verfügung gestellt, bei dem bei verhältnismässig   grosser   Lichtstärke und verhältnismässig grossem Bildfeld die die Schärfe der Abbildung störenden Fehler in einer Weise gehoben werden konnten, wie dies bis dahin bei den Fernobjektiven bei gleicher   Lichtstärke   und gleich grossem Bildfeld nicht möglich gewesen war.

   Dieser Erfolg wurde dadurch erzielt, dass bei den Fernobjektiven derjenigen bekannten Gattung, bei der das Vorderglied aus zwei durch eine zerstreuende Luftlinse voneinander getrennten Linsen und das Hinterglied aus zwei miteinander verkitteten Linsen besteht und bei der die beiden Bestandteile jedes der beiden Glieder entgegengesetztes   Stärkenvorzeichen   haben, die   Kitifläche   im Hintergliea sammelnd ausgebildet wurde. 



   Nun hat sich aber gezeigt, und hierin besteht die voiliegende Erfindung, dass dann, wenn das Hinterglied aus zwei Menisken zusammengesetzt ist, die ihre hohle Fläche dem Vordergliede zukehren, durch die Anordnung der sammelnden   Kittfläche   im Hinterglied eine gleich gute Wirkung erzielt werden kann, wenn auch die beiden Linsen des Vorderglredes miteinander verkittet werden. 



   Die folgenden Tafeln geben die   Masse   und die für die verwendeten Glasarten kennzeichnenden 
 EMI1.1 
 dabei auf eine   Objsktivbrennweite   von 100 Einheiten. 
 EMI1.2 
 
<tb> 
<tb> 



  Radien <SEP> Dicken <SEP> und <SEP> Abstände
<tb> /'1 <SEP> 18-98 <SEP> dl <SEP> = <SEP> 3-88
<tb> r2 <SEP> = <SEP> -45-01 <SEP> dll <SEP> = <SEP> 0-61
<tb> r3 <SEP> = <SEP> + <SEP> 43.41 <SEP> b1 <SEP> = <SEP> 2.53
<tb> 1'4 <SEP> =-10. <SEP> 61 <SEP> b2 <SEP> = <SEP> 21 <SEP> 03
<tb> 10-34 <SEP> dull <SEP> = <SEP> 2. <SEP> 04
<tb> =-17-56 <SEP> tUv <SEP> = <SEP> 1. <SEP> 22
<tb> Glasarten:
<tb> I <SEP> II <SEP> III <SEP> IV
<tb> nD <SEP> 1.5913 <SEP> 1.6042 <SEP> 1.6238 <SEP> 1.4979
<tb> v <SEP> 61.0 <SEP> 37.9 <SEP> 35.7 <SEP> 65.3
<tb> 
 

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



   <Desc / Clms Page number 1>
 



    Spherically, chromatically and astigmatically corrected distance lens.



   The invention on which the main patent is based provided a photographic long-range lens in which, with a comparatively high light intensity and a comparatively large field of view, the errors which interfere with the sharpness of the image could be raised in a way that was previously possible with the long-distance lenses with the same light intensity and the same field of view was not possible.

   This success was achieved by the fact that in the long-range lenses of the known type in which the front element consists of two lenses separated from one another by a diffusing air lens and the rear element consists of two lenses cemented to one another and in which the two components of each of the two elements have opposite strengths, the daycare area in Hintergliea was trained to collect.



   However, it has now been shown, and this is the present invention, that when the rear limb is composed of two menisci, which have their hollow surface facing the fore limb, an equally good effect can be achieved by the arrangement of the collecting cement surface in the rear limb, if the two lenses of the fore part are also cemented together.



   The following tables give the dimensions and characteristics of the types of glass used
 EMI1.1
 with a lens focal length of 100 units.
 EMI1.2
 
<tb>
<tb>



  Radii <SEP> Thicknesses <SEP> and <SEP> distances
<tb> / '1 <SEP> 18-98 <SEP> dl <SEP> = <SEP> 3-88
<tb> r2 <SEP> = <SEP> -45-01 <SEP> dll <SEP> = <SEP> 0-61
<tb> r3 <SEP> = <SEP> + <SEP> 43.41 <SEP> b1 <SEP> = <SEP> 2.53
<tb> 1'4 <SEP> = -10. <SEP> 61 <SEP> b2 <SEP> = <SEP> 21 <SEP> 03
<tb> 10-34 <SEP> dull <SEP> = <SEP> 2. <SEP> 04
<tb> = -17-56 <SEP> tUv <SEP> = <SEP> 1. <SEP> 22
<tb> Glass types:
<tb> I <SEP> II <SEP> III <SEP> IV
<tb> nD <SEP> 1.5913 <SEP> 1.6042 <SEP> 1.6238 <SEP> 1.4979
<tb> v <SEP> 61.0 <SEP> 37.9 <SEP> 35.7 <SEP> 65.3
<tb>
 

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

 

Claims (1)

PATENT-ANSPRUCH: Sphärisch, chromatisch und astigmatisch korrigiertes Fernobjektiv nach Patent Nr. 88609, dessen Hinterglied aus zwei Menisken zusammengesetzt ist, die ihre hohle Fläche dem Vordergliede zukehren, dadurch gekennzeichnet, dass das Vorderglied des Objektivs aus zwei miteinander verkitteten Linsen besteht. EMI1.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Spherically, chromatically and astigmatically corrected distance lens according to patent no. 88609, the rear part of which is composed of two menisci, the hollow surface of which faces the front part, characterized in that the front part of the lens consists of two lenses cemented together. EMI1.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT92128D 1919-06-16 1922-04-20 Spherically, chromatically and astigmatically corrected distance lens. AT92128B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE88609X 1919-06-16

Publications (1)

Publication Number Publication Date
AT92128B true AT92128B (en) 1923-04-10

Family

ID=5642356

Family Applications (2)

Application Number Title Priority Date Filing Date
AT88609D AT88609B (en) 1919-06-16 1920-06-22 Spherically, chromatically and astigmatically corrected distance lens.
AT92128D AT92128B (en) 1919-06-16 1922-04-20 Spherically, chromatically and astigmatically corrected distance lens.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT88609D AT88609B (en) 1919-06-16 1920-06-22 Spherically, chromatically and astigmatically corrected distance lens.

Country Status (1)

Country Link
AT (2) AT88609B (en)

Also Published As

Publication number Publication date
AT88609B (en) 1922-05-26

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