DE1128677B - Fast Gauss lens - Google Patents

Fast Gauss lens

Info

Publication number
DE1128677B
DE1128677B DEO7350A DEO0007350A DE1128677B DE 1128677 B DE1128677 B DE 1128677B DE O7350 A DEO7350 A DE O7350A DE O0007350 A DEO0007350 A DE O0007350A DE 1128677 B DE1128677 B DE 1128677B
Authority
DE
Germany
Prior art keywords
lens
focal length
tolerance
gauss lens
aperture
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.)
Pending
Application number
DEO7350A
Other languages
German (de)
Inventor
Karl-Heinz Pennig
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.)
Optische Werke G Rodenstock
Original Assignee
Optische Werke G Rodenstock
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 Optische Werke G Rodenstock filed Critical Optische Werke G Rodenstock
Priority to DEO7350A priority Critical patent/DE1128677B/en
Publication of DE1128677B publication Critical patent/DE1128677B/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below

Description

Lichtstarkes Gauß-Objektiv Die Erfindung bezieht sich auf ein sechslinsiges Gauß-Objektiv, bei dem die Blende von zwei verkitteten streuenden Menisken und diese wiederum von zwei einzelnen Sammellinsen eingeschlossen sind. Sie löst die Aufgabe, ein Objektiv eines höheren Öffnungsverhältnisses als 1 : 1,9 zu schaffen, bevorzugt 1 : 1,5 oder 1 : 1,6, wobei die Schnittweite mindestens 70 °/o der Brennweite beträgt, so daß ein solches Objektiv mit der Normalbrennweite 50 mm innerhalb der üblichen Toleranzen in Spiegelreflexkameras des Formates 24 - 36 mm benutzt werden kann. Dementsprechend beträgt der Bildwinkel etwa 45°. Die bisher bekannten Systeme erfüllen nicht alle diese Bedingungen gleichzeitig.Fast Gaussian lens The invention relates to a six-lens lens Gaussian lens in which the diaphragm of two cemented scattering menisci and these are in turn enclosed by two individual converging lenses. She solves the task To create a lens with an aperture ratio higher than 1: 1.9 is preferred 1: 1.5 or 1: 1.6, the focal length being at least 70% of the focal length, so that such a lens with the normal focal length 50 mm within the usual Tolerances in single lens reflex cameras of the format 24 - 36 mm can be used. The angle of view is accordingly about 45 °. Meet the previously known systems not all of these conditions at the same time.

Selbstverständlich enthält das Objektiv gemäß der Erfindung hochbrechende Gläser, um zu dem Ziel zu gelangen. Darüber hinaus ist es erforderlich, insbesondere in den vor der Blende, also auf der Seite der langen Schnittweite, befindlichen Gliedern folgende im einzelnen bekannten Konstruktionsmerkmale gemeinsam einzuführen.Of course, the objective according to the invention contains high refractive index Glasses to get to the goal. In addition, it is required in particular in the ones in front of the aperture, i.e. on the side with the long focal length Break down the following individually known design features to be introduced together.

So muß das Radienverhältnis der der langen Schnittweite zugewandten Sammellinse größer als 0,37 sein; sie ist also ein Meniskus. Die Kittfläche in dem streuenden Meniskus auf der Seite der langen Schnittweite ist zur Blende hohl, ihr Radius liegt zwischen 60 und 150 °/o der Brennweite. Die Dicke dieses verkitteten Meniskus ist kleiner als 15 °/o der Brennweite. Dadurch bleibt die Baulänge um etwa 70 °/o der Brennweite.So the radius ratio has to face that of the long back focal length Converging lens greater than 0.37; so it is a meniscus. The putty in the scattering meniscus on the side of the long focal length is hollow to the aperture, ye The radius is between 60 and 150 ° / o of the focal length. The thickness of this cemented Meniscus is less than 15% of the focal length. As a result, the overall length remains around 70 ° / o of the focal length.

Die Brechzahlen aller Gläser nehmen von beiden Seiten her von außen nach innen ab, wobei die Unterschiede zwischen den Brechzahlen benachbarter Linsen mindestens 0,02 betragen. Kein Radius des gesamten Objektivs ist, absolut genommen, kürzer als 27 °/o der Brennweite.The refractive indices of all glasses take from both sides from the outside inwards, with the differences between the refractive indices of neighboring lenses be at least 0.02. No radius of the entire lens is, taken absolutely, shorter than 27 ° / o of the focal length.

In der folgenden Tabelle ist das Objektiv gemäß der Erfindung für f = 1 wiedergegeben: Radien (r), Dicken (d), Gradzahlen,/ Ny- Abstände (l) Zahlen r1 = -f- 0,7874 d, = 0,0619 n, = 1,78847/50,45 r" = + 1,9638 h = 0,0419 Y3 = -f- 0,4195 d2 = 0,0855 n2 = 1,69100/54,80 r4 = -f- 0,8206 d3 = 0,0491 n3 = 1,62588/35,64 r5 = -E- 0,2844 12 = 0,2359 r6 = - 0,3036 Radien (r), Dicken (d), Gradzahlen/Ny- Abstände (l) Zahlen d4 = 0,0419 n, = 1,66680/33,09 Y7 = 00 d, = 0,1130 n5 = 1,71300/53,89 r8 = - 0,4183 1, = 0,0010 r9 = -r-12,5545 d6 = 0,0639 n6 = l,73350/51,04 rlo = - 0,7809 s' =. 0,757 Bauhöhe: 0,694 Lichtstärke: 1:1,6 Die Figur zeigt einen Querschnitt durch das Objektiv gemäß der Erfindung.The following table shows the objective according to the invention for f = 1: Radii (r), thicknesses (d), degrees, / Ny- Spacing (l) numbers r1 = -f- 0.7874 d, = 0.0619 n, = 1.78847 / 50.45 r "= + 1.9638 h = 0.0419 Y3 = -f- 0.4195 d2 = 0.0855 n2 = 1.69100 / 54.80 r4 = -f- 0.8206 d3 = 0.0491 n3 = 1.62588 / 35.64 r5 = -E- 0.2844 12 = 0.2359 r6 = - 0.3036 Radii (r), thicknesses (d), degrees / Ny- Spacing (l) numbers d4 = 0.0419 n, = 1.66680 / 33.09 Y7 = 00 d, = 0.1130 n5 = 1.71300 / 53.89 r8 = - 0.4183 1, = 0.0010 r9 = -r-12.5545 d6 = 0.0639 n6 = 1.73350 / 51.04 rlo = - 0.7809 s' =. 0.757 Overall height: 0.694 Light intensity: 1: 1.6 The figure shows a cross section through the objective according to the invention.

Claims (1)

PATENTANSPRUCH: Sechslinsiges Gauß-Objektiv, dessen Blende von zwei verkitteten streuenden Menisken eingeschlossen ist, denen auf jeder Seite eine einzelne Sammellinse folgt, gekennzeichnet durch folgende Daten mit jl- 5 °/o Toleranz der Krümmungen, bezogen auf die Gesamtbrechkraft des Objektivs, ±5°/o Toleranz der Dicken bezogen auf die Brennweite, mit ±0,03°/a Toleranz der Brechzahlen und ± 5 Einheiten der Ny-Werte r, = + 0,7874 dl = 0,0619 n, = 1,78847/50,45 r2 = + 1,9638 l,. = 0,0419 r3 = 1 0,4195 d2 = 0,0855 n2 = l,69100/54,80 r4 = -E- 0,8206
d3 = 0,0491 n3 = 1,62588/35,64 r5 = + 0,2844 12 = 0,2359 r, = - 0,3036 d4 = 0,0419 n4 = 1,66680/33,09 r7 = 3- Co d5 = 0,1130 n5 = 1,71300/53,89 r3 = - 0,4183 13 = 0,0010 r9 = -r12,5545
d6 = 0,0639 n" = 1,73350/51,04 rla = - 0,7809 s' = 0,757 Bauhöhe: 0,694 Lichtstärke: 1 :1,6
In Betracht gezogene Druckschriften: USA.-Patentschriften Nr. 2 735 340, 2 250 337.PATENT CLAIM: Six-lens Gaussian lens, the aperture of which is enclosed by two cemented scattering menisci, which are followed on each side by a single converging lens, characterized by the following data with jl- 5% tolerance of the curvatures, based on the total refractive power of the lens, ± 5 ° / o tolerance of the thickness in relation to the focal length, with ± 0.03 ° / a tolerance of the refractive indices and ± 5 units of the Ny values r, = + 0.7874 dl = 0.0619 n = 1.78847 / 50.45 r2 = +1.9638 l ,. = 0.0419 r3 = 1 0.4195 d2 = 0.0855 n2 = 1.69100 / 54.80 r4 = -E- 0.8206
d3 = 0.0491 n 3 = 1, 62588 / 35.64 r5 = + 0.2844 12 = 0.2359 r, = - 0.3036 d4 = 0.0419 n4 = 1.66680 / 33.09 r7 = 3- Co d5 = 0.1130 n5 = 1.71300 / 53.89 r3 = - 0.4183 13 = 0.0010 r9 = -r12.5545
d6 = 0.0639 n "= 1.73350 / 51.04 rla = - 0.7809 s' = 0.757 Overall height: 0.694 Light intensity: 1 : 1.6
References considered: U.S. Patent Nos. 2,735,340, 2,250,337.
DEO7350A 1960-04-13 1960-04-13 Fast Gauss lens Pending DE1128677B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEO7350A DE1128677B (en) 1960-04-13 1960-04-13 Fast Gauss lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO7350A DE1128677B (en) 1960-04-13 1960-04-13 Fast Gauss lens

Publications (1)

Publication Number Publication Date
DE1128677B true DE1128677B (en) 1962-04-26

Family

ID=7351124

Family Applications (1)

Application Number Title Priority Date Filing Date
DEO7350A Pending DE1128677B (en) 1960-04-13 1960-04-13 Fast Gauss lens

Country Status (1)

Country Link
DE (1) DE1128677B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2839843A1 (en) * 1977-09-13 1979-03-22 Olympus Optical Co NORMAL LENS FOR SINGLE-EYE SINGLE-EYE REFLECTIVE CAMERAS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250337A (en) * 1938-12-23 1941-07-22 Taylor Taylor & Hobson Ltd Optical objective
US2735340A (en) * 1956-02-21 aklin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735340A (en) * 1956-02-21 aklin
US2250337A (en) * 1938-12-23 1941-07-22 Taylor Taylor & Hobson Ltd Optical objective

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2839843A1 (en) * 1977-09-13 1979-03-22 Olympus Optical Co NORMAL LENS FOR SINGLE-EYE SINGLE-EYE REFLECTIVE CAMERAS
US4232944A (en) * 1977-09-13 1980-11-11 Olympus Optical Co., Ltd. Standard photographic lens

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