AT88609B - Spherically, chromatically and astigmatically corrected distance lens. - Google Patents

Spherically, chromatically and astigmatically corrected distance lens.

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Publication number
AT88609B
AT88609B AT88609DA AT88609B AT 88609 B AT88609 B AT 88609B AT 88609D A AT88609D A AT 88609DA AT 88609 B AT88609 B AT 88609B
Authority
AT
Austria
Prior art keywords
sep
lens
chromatically
spherically
lenses
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 AT88609B publication Critical patent/AT88609B/en

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  • Lenses (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Sphärisch, chromatisch und astigmatisch korrigiertes Femobjektiv. 



   Die vorliegende Erfindung betrifft ein Objektiv, das aus einem sammelnden Vordergliede und einem zerstreuenden Hintergliede besteht und dessen hinterer Hauptpunkt vor der vordersten   Linsenfläehe   liegt, so dass also (wie in der Regel) bei den sogenannten Fernobjektiven) der Abstand dieser Linsenfläche von der Brennebene des Objektivs kleiner als die Brennweite des Objektivs ist, und zwar handelt es sich innerhalb dieser bekannten Gattung um die ebenfalls bekannte
Art, bei der das Vorderglied aus zwei durch eine zerstreuende Luftlinse voneinander getrennten
Linsen und das   Hinterglied   aus zwei miteinander verkitteten Linsen besteht, wobei in jedem der beiden Glieder die beiden Bestandteile entgegengesetztes Stärkevorzeichen haben. 



   Nach der Erfindung lassen sich innerhalb dieser Art von Objektiven solche von verhältnis- mässig grosser Lichtstärke und verhältnismässig grossem Gesichtsfeld bei einer solchen Hebung der sphärischen, der chromatischen und insbesondere der astigmatischen Fehler, wie sie im all- gemeinen bisher bei. Fernobjektiven nicht erreicht worden ist, herstellen, wenn man die in dem
Hintergliede enthaltene Kittfläche sammelnd ausführt. 



   Für das in der Zeichnung dargestellte Ausführungsbeispiel gibt die folgende Tafel die   Masse,   bezogen auf die Brennweite I00, und für die verwendeten Glasarten kennzeichnenden
Grössen an. 
 EMI1.1 
 
<tb> 
<tb> ri <SEP> = <SEP> 18-091 <SEP> dI <SEP> = <SEP> 3.329
<tb> r2 <SEP> 38-834 <SEP> bl <SEP> = <SEP> 0-130
<tb> Ta <SEP> = <SEP> - <SEP> 36-679 <SEP> dII <SEP> = <SEP> 0-83
<tb> r4 <SEP> = <SEP> + <SEP> 38.740 <SEP> b2 <SEP> = <SEP> 5-66
<tb> ri <SEP> =-10-396 <SEP> bs <SEP> = <SEP> 18-25
<tb> ra <SEP> =-9-426 <SEP> dni <SEP> = <SEP> 1'89
<tb> 1', <SEP> = <SEP> - <SEP> I7.I30. <SEP> dIV <SEP> = <SEP> 0.75.
<tb> 



  I <SEP> II <SEP> III <SEP> IV
<tb> nD <SEP> = <SEP> 1'59234 <SEP> i'597 4 <SEP> 1-62410 <SEP> 1'49900
<tb> nG' <SEP> = <SEP> I.60464 <SEP> I.6I7I8 <SEP> I.64732 <SEP> I.50840,
<tb> 
 
Ein Fernobjektiv nach diesem Beispiel ist bis zu dem für ein Fernobjektiv verhältnismässig hohen   Offnungsverhältnis   von   I : 6'3 gut verwendbar.   

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



   <Desc / Clms Page number 1>
 



  Spherically, chromatically and astigmatically corrected long-range lens.



   The present invention relates to an objective which consists of a converging front element and a dispersing rear element and the rear main point of which lies in front of the foremost lens surface, so that (as is usually the case with so-called long-distance lenses) the distance of this lens surface from the focal plane of the lens is smaller than the focal length of the lens, namely within this known genus it is also known
Type in which the anterior phalanx consists of two separated by a diffusing air lens
Lenses and the rear part consists of two lenses cemented together, the two components having opposite strength signs in each of the two parts.



   According to the invention, lenses with a comparatively high light intensity and a comparatively large field of view with such an enhancement of the spherical, chromatic and especially astigmatic errors, as they have generally been with so far, can be used within this type of objective. Long-range lenses have not been achieved if one has that in the
Executes collecting putty surface contained in the rear sections.



   For the embodiment shown in the drawing, the following table gives the dimensions, based on the focal length I00, and indicative of the types of glass used
Sizes.
 EMI1.1
 
<tb>
<tb> ri <SEP> = <SEP> 18-091 <SEP> dI <SEP> = <SEP> 3.329
<tb> r2 <SEP> 38-834 <SEP> bl <SEP> = <SEP> 0-130
<tb> Ta <SEP> = <SEP> - <SEP> 36-679 <SEP> dII <SEP> = <SEP> 0-83
<tb> r4 <SEP> = <SEP> + <SEP> 38.740 <SEP> b2 <SEP> = <SEP> 5-66
<tb> ri <SEP> = -10-396 <SEP> bs <SEP> = <SEP> 18-25
<tb> ra <SEP> = -9-426 <SEP> dni <SEP> = <SEP> 1'89
<tb> 1 ', <SEP> = <SEP> - <SEP> I7.I30. <SEP> dIV <SEP> = <SEP> 0.75.
<tb>



  I <SEP> II <SEP> III <SEP> IV
<tb> nD <SEP> = <SEP> 1'59234 <SEP> i'597 4 <SEP> 1-62410 <SEP> 1'49900
<tb> nG '<SEP> = <SEP> I.60464 <SEP> I.6I7I8 <SEP> I.64732 <SEP> I.50840,
<tb>
 
A distance lens according to this example can be used well up to the aperture ratio of I: 6'3, which is relatively high for a distance lens.

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

Claims (1)

PATENT-ANSPRUCH : Sphärisch, chromatisch und astigmatisch korrigiertes Objektiv, das aus einem sammelnden Vordergliede und einem zerstreuenden Hintergliede besteht und bei dem der hintere Hauptpunkt vor der vordersten Linsenfläche liegt, wobei das Vorderglied aus zwei durch eine zerstreuende Luftlinse voneinander getrennten Linsen und das Hinterglied aus zwei miteinander verkitteten Linsen besteht und wobei die beiden Bestandteile jedes der beiden Glieder entgegengesetztes Stärkevorzeichen haben, dadurch gekennzeichnet, dass die Kittfläche sammelnd wirkt. EMI1.2 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Spherically, chromatically and astigmatically corrected lens, which consists of a converging front element and a diffusing rear element and in which the rear main point lies in front of the foremost lens surface, the front element consisting of two lenses separated from one another by a dispersing air lens and the rear element consisting of two lenses cemented together consists and wherein the two components of each of the two links have opposite strength signs, characterized in that the cement surface acts collectively. EMI1.2 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT88609D 1919-06-16 1920-06-22 Spherically, chromatically and astigmatically corrected distance lens. AT88609B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
AT88609B true AT88609B (en) 1922-05-26

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 After (1)

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

Country Status (1)

Country Link
AT (2) AT88609B (en)

Also Published As

Publication number Publication date
AT92128B (en) 1923-04-10

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