DE1215390B - Photographic lens - Google Patents

Photographic lens

Info

Publication number
DE1215390B
DE1215390B DEL37720A DEL0037720A DE1215390B DE 1215390 B DE1215390 B DE 1215390B DE L37720 A DEL37720 A DE L37720A DE L0037720 A DEL0037720 A DE L0037720A DE 1215390 B DE1215390 B DE 1215390B
Authority
DE
Germany
Prior art keywords
cemented negative
negative meniscus
photographic lens
meniscus
positive
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
DEL37720A
Other languages
German (de)
Inventor
Eugen Hermanni
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
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 Ernst Leitz Wetzlar GmbH filed Critical Ernst Leitz Wetzlar GmbH
Priority to DEL37720A priority Critical patent/DE1215390B/en
Priority to CH1386761A priority patent/CH396441A/en
Publication of DE1215390B publication Critical patent/DE1215390B/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

Landscapes

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

Description

Fotografisches Objektiv Die Erfindung betrifft ein lichtstarkes Objektiv des abgewandelten Gauß-Typs, dessen Hinterglied aus einem unverkitteten negativen Meniskus und einer einfachen Positivlinse besteht. Das Vorderglied ist aus einem verkitteten negativen Meniskus und aus zwei vorangestellten einfachen Positivlinsen gebildet.Photographic lens The invention relates to a fast lens of the modified Gaussian type, the posterior part of which is composed of a non-cemented negative Meniscus and a simple positive lens. The foreleg is made of one cemented negative meniscus and two simple positive lenses in front educated.

Objektive gemäß der Erfindung sind in den Patentansprüchen durch Angabe der Konstruktionsdaten für die Brennweite f = 1 gekennzeichnet, Ihr Aufbau ist in der Zeichnung dargestellt. In diesen Objektiven ist ein neues Glas n = 1,69290,v = 49,4 verwendet, welches ungefähr die folgende Zusammensetzung in Gewichtsprozenten hat: 3i02 I B,03 I Ca0 I Ba0 I Z,0 I Z,02 15 1 20 I 20 I 17 I 21 I 7 . Die Verwendung dieses Glases ist für sich allein jedoch nicht Gegenstand der Erfindung.Lenses according to the invention are characterized in the claims by specifying the design data for the focal length f = 1, their structure is shown in the drawing. In these objectives a new glass n = 1.69290, v = 49.4 is used, which has approximately the following composition in percent by weight: 3 i02 IB, 03 I Ca0 I Ba0 IZ, 0 IZ, 02 15 1 20 I 20 I 17 I 21 I 7 . However, the use of this glass on its own is not the subject of the invention.

Claims (1)

Patentansprüche: 1. Fotografisches Objektiv, bei dem auf zwei positiveMeniskenein verkitteternegativerMeniskusfolgt und bei dem hinter der Blende auf den unverkitteten negativen Meniskus eine einfache Positivlinse folgt, gekennzeichnet durch folgende Daten: f : 1,8; Bildwinkel 48° ne I ye r1 = -j--0,7205 dl = 0,0729 1,69290 49,4 r2 = -f-1,1669 a1 = 0,002 r3 = -f-0,6433 d2 = 0,0729 1,69290 49,4 r4 = -f-1,0425 a2 = 0,002 r5 = -j-0,3718 d3 = 0,1237 1369290 49,4 ro = -j-8,0000 d4 = 0,0428 1,69416 30,9 r7 = -f-0,23284 a2 = 0,1916 r8 = -0,3022 d5 = 0,0816 1,73431 28,4 r. = -0,4466 a3 = 0,005 rlo = +3,0681 d, = 0,073 1,62303 60,1 rll = -0,5075
2. Fotografisches Objektiv, bei dem auf zwei positive Menisken ein verkitteter negativer Meniskus folgt und bei dem hinter der Blende auf den unverkitteten negativen Meniskus eine einfache Positivlinse folgt, gekennzeichnet durch folgende Daten f : 2; Bildwinkel 27° ne I ye r1 = -f-0,68652 dl = 0,06251 1,69290 49,4 r2 = -j-1,1058 a1 = 0,00196 r3 = -j-0,68652 d2 = 0,0527 1,69290 49,4 r4 = +1,1058 a2 = 0,00294 r5 = -j-0,36575 d3 = 0,14003 1,69290 49,4 r6 = o0 d4 = 0,03974 1,69416 30,8 r7 = +0,2288 a3 = 0,2096 r8 = -0,30424 d5 = 0,07595 1,73431 28,4 r9 = -0,45349 a4 = 0,00981 rlo = +3,73756 d, = 0,07222 1,69400 54,6 r, = -0,54348
3. Fotografisches Objektiv, bei dem auf zwei positive Menisken ein verkitteter negativer Meniskus folgt und bei dem hinter der Blende auf den urverkitteten negativen Meniskus eine einfache Positivlinse folgt, gekennzeichnet durch folgende Daten: . . f : 2; Bildwinkel 27° . ne ve r1 = +0,69462 0,07244 1,69290 49,4 r2 = +1,12979 0,002 r,- - +0.69462-__.-_ . - _ . _ _ 0,07244 1,69290 49,4:- r4 = +1,12979 0,003 r6 = +0,36534 0,13989 1,69290 49,4 r, = -2,4522 0,03967 1,69416 30,9 r7 = +0,22854 _-_...0,18944 r$ = -0,30830 0,07589 1,73431 28,4 r9 = -0,46674 0,00978 rlo = -i-3,25487 - - 0,07211 1,69290 49,4 r1,. = -0,55524
In Befrächt gezogene Druckschriften: Britische Patentschriften Nr. 575 075, 575 076; USA.-Patentschrift Nr. 2 836102.Claims: 1. Photographic lens in which two positive meniscus are followed by a cemented negative meniscus and in which a simple positive lens follows the non-cemented negative meniscus behind the diaphragm, characterized by the following data: f: 1.8; Angle of view 48 ° ne I ye r1 = -j - 0.7205 dl = 0.0729 1.69290 49.4 r2 = -f-1.1669 a1 = 0.002 r3 = -f-0.6433 d2 = 0.0729 1.69290 49.4 r4 = -f-1.0425 a2 = 0.002 r5 = -j-0.3718 d3 = 0.1237 1 3 69290 49.4 ro = -j-8.0000 d4 = 0.0428 1.69416 30.9 r7 = -f-0.23284 a2 = 0.1916 r8 = -0.3022 d5 = 0.0816 1.73431 28.4 r. = -0.4466 a3 = 0.005 rlo = +3.0681 d, = 0.073 1.62303 60.1 rll = -0.5075
2. Photographic lens in which two positive meniscus are followed by a cemented negative meniscus and in which a simple positive lens follows the non-cemented negative meniscus behind the diaphragm, characterized by the following data f: 2; Angle of view 27 ° ne I ye r1 = -f-0.68652 dl = 0.06251 1.69290 49.4 r2 = -j-1.1058 a1 = 0.00196 r3 = -j-0.68652 d2 = 0.0527 1.69290 49.4 r4 = +1.1058 a2 = 0.00294 r5 = -j-0.36575 d3 = 0.14003 1.69290 49.4 r6 = o0 d4 = 0.03974 1.69416 30.8 r7 = +0.2288 a3 = 0.2096 r8 = -0.30424 d5 = 0.07595 1.73431 28.4 r9 = -0.45349 a4 = 0.00981 rlo = +3.73756 d, = 0.07222 1.69400 54.6 r, = -0.54348
3. Photographic lens in which two positive meniscus are followed by a cemented negative meniscus and in which a simple positive lens follows the originally cemented negative meniscus behind the diaphragm, characterized by the following data: . . f: 2; Angle of view 27 °. n e v e r1 = +0.69462 0.07244 1.69290 49.4 r2 = +1.12979 0.002 r, - - +0.69462 -__.-_. - _. _ _ 0.07244 1.69290 49.4: - r4 = +1.12979 0.003 r6 = +0.36534 0.13989 1.69290 49.4 r, = -2.4522 0.03967 1.69416 30.9 r7 = +0.22854 _-_... 0.18944 r $ = -0.30830 0.07589 1.73431 28.4 r9 = -0.46674 0.00978 rlo = -i-3.25487 - - 0.07211 1.69290 49.4 r1 ,. = -0.55524
Documents in Concern: British Patent Nos. 575 075, 575 076; U.S. Patent No. 2,836,102.
DEL37720A 1960-12-10 1960-12-10 Photographic lens Pending DE1215390B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEL37720A DE1215390B (en) 1960-12-10 1960-12-10 Photographic lens
CH1386761A CH396441A (en) 1960-12-10 1961-11-29 Photographic lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL37720A DE1215390B (en) 1960-12-10 1960-12-10 Photographic lens

Publications (1)

Publication Number Publication Date
DE1215390B true DE1215390B (en) 1966-04-28

Family

ID=7268005

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL37720A Pending DE1215390B (en) 1960-12-10 1960-12-10 Photographic lens

Country Status (2)

Country Link
CH (1) CH396441A (en)
DE (1) DE1215390B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575075A (en) * 1944-02-25 1946-02-01 Wray Optical Works Ltd Improvements relating to optical lenses
GB575076A (en) * 1944-02-25 1946-02-01 Wray Optical Works Ltd Improvements relating to optical lenses
US2836102A (en) * 1955-08-16 1958-05-27 Canon Camera Co High aperture photographic lens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575075A (en) * 1944-02-25 1946-02-01 Wray Optical Works Ltd Improvements relating to optical lenses
GB575076A (en) * 1944-02-25 1946-02-01 Wray Optical Works Ltd Improvements relating to optical lenses
US2836102A (en) * 1955-08-16 1958-05-27 Canon Camera Co High aperture photographic lens

Also Published As

Publication number Publication date
CH396441A (en) 1965-07-31

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