DE343086C - Unbalanced lens - Google Patents

Unbalanced lens

Info

Publication number
DE343086C
DE343086C DE1920343086D DE343086DA DE343086C DE 343086 C DE343086 C DE 343086C DE 1920343086 D DE1920343086 D DE 1920343086D DE 343086D A DE343086D A DE 343086DA DE 343086 C DE343086 C DE 343086C
Authority
DE
Germany
Prior art keywords
lens
unbalanced
last
same
members
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
DE1920343086D
Other languages
German (de)
Inventor
E. Leitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE343086C publication Critical patent/DE343086C/en
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/12Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Description

Unsymmetrisches Objektiv. Die bisher bekannten unsymmetrischen Objektive mit anastigmatischer Bildfeldebnung aus drei Gliedern, von denen das erste eine Sammellinse, das zweite eine Zerstreuungslinse ist und das letzte Glied aus zwei miteinander verkitteten Linsen besteht, verwenden im dritten Glied eine verhältnismäßig stark gekrümmte Kittfläche. Abgesehen von -`den technischen Nachteilen bei der Herstellung wird bei gegebener Dicke der einen Linse auch, ihre freie Öffnung durch die starke Krümmung der Kittfläche beschränkt.Unbalanced lens. The previously known asymmetrical lenses with anastigmatic flattening of the image field made up of three members, the first of which is one Converging lens, the second is a diverging lens and the last link is made up of two Lenses cemented to one another, use a proportionately in the third link strongly curved putty surface. Apart from -`the technical disadvantages in the production with a given thickness of one lens, its free opening through the strong one Limited curvature of the putty surface.

Nach der Erfindung werden diese Nachteile unter Erhalt der astigmatischen Korrektion vermieden, indem abweichend von den bisherigen Konstruktionen die Konstruktionselemente so verteilt werden, daß die Fundamentalstrahlen, welche die Träger der kaustischen Spitze in den schiefen meridionalen Büscheln sind, nahe der ersten Linse die Achse schneiden. Dementsprechend befindet sich der Blendenort in dem Luftzwischenraum zwischen dem ersten und zweiten Glied. Bei einer derartigen Anordnung gelangt man zu einer, Kittfläche im dritten Glied, welche dieselbe oder schwächere Krümmung hat als die letzte Fläche desselben Gliedes.According to the invention, these disadvantages are avoided while maintaining the astigmatic Correction avoided by deviating from the previous constructions the construction elements are distributed in such a way that the fundamental rays which are the carriers of the caustic The tips in the oblique meridional tufts are the axis near the first lens cut. Accordingly, the diaphragm location is in the air gap between the first and second link. With such an arrangement one arrives to a, cemented surface in the third member, which has the same or less curvature has as the last surface of the same member.

Zwecks Einstellung auf verschiedene Objekt--.weiten ist das, zweite Glied auf der Achse `verschiebbar angeordnet, wobei die anastigmatische Bildfeldebnung des ganzen Objektivs gewahrt bleibt. Selbstverständlich gilt dies entsprechend auch für den Fall, wo das Objektiv als Projektionssystem benutzt wird, und Objekt- und Bildebene in ihrer Lage vertauscht sind.For the purpose of adjusting to different objects - this is the second Member on the axis `slidably arranged, whereby the anastigmatic image field flattening of the whole lens is preserved. Of course, this also applies accordingly for the case where the lens is used as a projection system, and object and The position of the image plane is reversed.

Das auf der Zeichnung dargestellte Ausführungsbeispiel läßt das wesentliche der neuen Konstruktion erkennen. Seine Daten sind die folgenden F = Zoo mm Öffnungsverhältnis I:3,4 Radien Dicken und Abstände Glasarten Y1 = 28,oo mm dl = 6,27 mm y2 = - 251,8 - 1l = 7,28 _ Li n/D = L590 v = 6I,2 Y3 = - 50,58 - d2 = 1,79 - 74 = 28,11 - L2 n/D -I,617 v = 36,5 . Y5 = 1120 - d3 = $,99 - L3 n/D = 1,516 v = 64,0 ys = 44,81 - d4 = 6,72 - L4 nlD = h6°4 v = 54,0 r7 = 44,81 - The embodiment shown in the drawing reveals the essentials of the new construction. Its data are the following: F = Zoo mm aperture ratio I: 3.4 Radii, thicknesses and spacing types of glass Y1 = 28.00 mm dl = 6.27 mm y2 = - 251.8 - 1l = 7.28 _ Li n / D = L590 v = 6I, 2 Y3 = - 5 0, 58 - d 2 = 1.79 - 74 = 28.11 - L2 n / D - I, 617 v = 36.5 . Y5 = 1120 - d3 = $, 99 - L3 n / D = 1.516 v = 64.0 ys = 44.81 - d4 = 6.72 - L4 nlD = h6 ° 4 v = 54.0 r7 = 44.81 -

Claims (2)

PATENTANSPRÜCHE: I. Unsymmetrisches, sphärisch und chromatisch korrigiertes Objektiv mit anastigmatischer Bildfeldebnung, bestehend aus drei durch Luftzwischenräume getrennten Gliedern, von denen das erste eine Sammellinse, das zweite eine Zerstreuungslinse ist und das letzte aus zwei miteinander verkitteten Linsen besteht, dadurch gekennzeichnet, daß sich der Blendenort in dem Luftraum zwischen dem ersten urid zweiten Glied befindet und infolgedessen die Kittfläche im dritten Glied dieselbe oder schwächere Krümmung hat als die letzte Fläche desselben Gliedes. PATENT CLAIMS: I. Asymmetrical, spherically and chromatically corrected lens with anastigmatic image field flattening, consisting of three members separated by air gaps, of which the first is a converging lens, the second is a diverging lens and the last consists of two lenses cemented together, characterized in that the diaphragm is located in the air space between the first and second members and as a result the cemented surface in the third member has the same or less curvature than the last surface of the same member. 2. Unsymmetrisches Objektiv nach Anspruch 1, dadurch gekennzeichnet, daß das zweite Glied auf der Achse verschiebbar angeordnet ist zwecks Einstellung auf verschiedene Objektweiten.2. Unbalanced lens according to claim 1, characterized in that the second link is slidable on the axis for adjustment different object widths.
DE1920343086D 1920-10-09 1920-10-09 Unbalanced lens Expired DE343086C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE343086T 1920-10-09

Publications (1)

Publication Number Publication Date
DE343086C true DE343086C (en) 1921-10-28

Family

ID=572564

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1920343086D Expired DE343086C (en) 1920-10-09 1920-10-09 Unbalanced lens

Country Status (1)

Country Link
DE (1) DE343086C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938822C (en) * 1950-02-04 1956-02-09 Schneider Co Optische Werke Photographic or cinematographic recording device with photocell and device for exposure adjustment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938822C (en) * 1950-02-04 1956-02-09 Schneider Co Optische Werke Photographic or cinematographic recording device with photocell and device for exposure adjustment

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