DE1190216B - Fast photographic or cinematographic lens made up of four parts standing in the air - Google Patents

Fast photographic or cinematographic lens made up of four parts standing in the air

Info

Publication number
DE1190216B
DE1190216B DESCH32858A DESC032858A DE1190216B DE 1190216 B DE1190216 B DE 1190216B DE SCH32858 A DESCH32858 A DE SCH32858A DE SC032858 A DESC032858 A DE SC032858A DE 1190216 B DE1190216 B DE 1190216B
Authority
DE
Germany
Prior art keywords
air
air gap
lens
lens made
lenses
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
DESCH32858A
Other languages
German (de)
Other versions
DE1910809U (en
Inventor
Walter Woeltche
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.)
Jos Schneider Optische Werke GmbH
Original Assignee
Jos Schneider Optische Werke 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 Jos Schneider Optische Werke GmbH filed Critical Jos Schneider Optische Werke GmbH
Priority to DESCH32858A priority Critical patent/DE1190216B/en
Publication of DE1190216B publication Critical patent/DE1190216B/en
Pending 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 -
    • G02B9/34Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only

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

Description

Lichtstarkes photographisches oder kinematographisches Objektiv aus vier in Luft stehenden Gliedern Die Erfindung betrifft ein lichtstarkes photographisches oder kinematographisches Objektiv aus vier in Luft stehenden Gliedern, bei welchem drei der Seite der längeren Strahlenweite zugeordneten Einzelgliedern mit unterschiedlichen Brechkraftvorzeichen nach dem Blendenraum ein der Bildebene zugekehrtes Kittglied positiver Brechkraft folgt.Fast photographic or cinematographic lens four limbs standing in the air The invention relates to a high-intensity photographic material or a cinematographic lens made up of four parts standing in the air, in which three individual members assigned to the side of the longer beam width with different Refractive power sign after the diaphragm space a cemented element facing the image plane positive refractive power follows.

Bei einem solchen aus nur fünf Linsen aufgebauten System bestand aus einbautechnischen Gründen die Forderung, bei hoher Lichtstärke - mit einem Öffnungsverhältnis von mindestens 1: 2,0 -und guter Korrektur aller bekannten Bildfehler einen möglichst kleinen Abstand des letzten Linsenscheitels von der Bildebene (= Schnittweite) zu erhalten, wobei eine gute Bildschärfe über das gesamte Bildfeld gewährleistet sein soll.In such a system, which was built up from only five lenses, consisted of technical installation reasons the requirement with high light intensity - with an aperture ratio of at least 1: 2.0 and good correction of all known image errors as much as possible small distance of the last lens vertex from the image plane (= back focus) obtained, with good image sharpness being guaranteed over the entire image field target.

Gemäß der Erfindung werden diese Forderungen erfüllt durch die nachfolgenden Konstruktionsdaten mit der Maßgabe, daß die Radien und Dicken der Linsen und Luftabstände -absolut genommen -bis zu 5% der Objektivbrennweite, die Brechzahlen der Gläser um 0,02 und ihre Ny-Werte um zwei Ein= heiten abweichen können: Öffnungsverhältnis 1:2,0 f' = 100 s' = 55,07 Bildfeld = 45° ne ve 1 L, -f-65,80 d = 8,6 1,69100 54,8 -f-200,00 1 d2 = 0,2 Luftabstand II L., rs = +35,98 d = 12,0 1,69100 54,8 r4 = +87,46 d4 = 3,0 Luftabstand - III L., r. = +166,90 d = 2,0 1,72830 28,7 r6 = -f-26,85 5 . d6 = 9,6 Blendenraum IV Ll r8 = -f-47,86 = -506,40 d7 = 10,0 1,50048 66,0 @LS r9 = -100,00 d8 = 20,0 1,71300 53,9 Der günstige Einfluß des dem Frontglied nachfolgenden zweiten, nach dem Objekt zu stark durchgebogenen Meniskus auf die gute Korrektur der Bildfeldwölbung konnte, ebenso wie die der sphärischen Aberration, im Sinne der Erfindung noch weiter dadurch erhöht werden, daß die Summe der Brechwerte der der Seite der längeren Strahlenweite zugekehrten Einzelglieder größer als oder mindestens gleich ist 5,0, die Differenz der Brechwerte der beiden Linsen im bildseitigen Kittglied größer ist als 0,18 und daß außerdem die Mittendicke eben dieses Kittgliedes größer ist als die Summe der Mittendicken der ersten drei Glieder des Systems, wobei -durch entsprechende Durchbiegung der betreffenden Linsenflächen - der Luftraum zwischen dem zweiten und dritten Glied die Form eines positiven Meniskus hat.According to the invention, these requirements are met by the following design data with the proviso that the radii and thicknesses of the lenses and air gaps - taken absolutely - up to 5% of the lens focal length, the refractive indices of the glasses around 0.02 and their Ny values around two Units can differ: Focal ratio 1: 2.0 f '= 100 s' = 55.07 field of view = 45 ° ne ve 1 L, -f-65.80 d = 8.6 1.69 100 54.8 -f-200.00 1 d2 = 0.2 air gap II L., rs = +35.98 d = 12.0 1.69 100 54.8 r4 = +87.46 d4 = 3.0 air gap - III L., r. = +166.90 d = 2.0 1.72830 28.7 r6 = -f-26.85 5. d6 = 9.6 aperture space IV Ll r8 = -f-47.86 = -506.40 d7 = 10.0 1.50048 66.0 @LS r9 = -100.00 d8 = 20.0 1.71300 53.9 The favorable influence of the second meniscus, which follows the front member and which is too strongly bent towards the object, on the good correction of the field curvature, as well as that of the spherical aberration, could be further increased in the sense of the invention by the fact that the sum of the refractive index of the side of the Individual members facing longer beam width is greater than or at least equal to 5.0, the difference in the refractive power of the two lenses in the cemented element on the image side is greater than 0.18 and that, in addition, the center thickness of this cemented element is greater than the sum of the center thicknesses of the first three elements of the System, whereby - by appropriate bending of the relevant lens surfaces - the air space between the second and third member has the shape of a positive meniscus.

Das nachfolgende Zahlenbeispiel zeigt in übereinstimmung mit dem Schnittbild der Zeichnung das erfindungsgemäß aufgebaute Objektiv mit der Lichtstärke 1: 2,0: Zahlenbeispiel Öffnungsverhältnis 1: 2,0 f' = 100 s' = 55,07 Bildfeld = 45° ne se 1 L, +65,80 +200,00 di - 8,6 1,69100 54,8 d., = 0,2 Luftabstand 11 L, rs = +35,98 d- = 12,0 1,69100 54,8 r4 = + 87,46 d4 = 3,0 Luftabstand IH L r5 = +166,90 rs = -I-26,85 d = 2,0 1,72830 28,7 d6 = 9,6 Blendenraum IV L' ra = = -506 +47,86 d7 = 10,0 1,50048 66,0 @LS r@ _ -100,00 dg = 20,0 1,71300 53,9 Hierin bedeuten r1 bis r. die kadien der zu den Gliedern I bis IV zusammengesetzten Linsen L1 bis Ls und d"_ bis de ihre Dicken und Luftabstände. Die Brechzahlen n der optischen Gläser sind für die e-Linie des Spektrums angegeben, ebenso die Ny-Werte. Die Bildebene ist mit B bezeichnet, der Abstand von dieser his zur letzten Linsenfläche r9 (= Schnittweite) mit s'.The following numerical example shows, in accordance with the sectional view of the drawing, the objective constructed according to the invention with a light intensity of 1: 2.0: Numerical example Focal ratio 1: 2.0 f '= 100 s' = 55.07 field of view = 45 ° no se 1 L, +65.80 +200.00 di - 8.6 1.69 100 54.8 d., = 0.2 air gap 11 L, rs = +35.98 d- = 12.0 1.69 100 54.8 r4 = + 87.46 d4 = 3.0 air gap IH L r5 = +166.90 rs = -I-26.85 d = 2.0 1.72830 28.7 d6 = 9.6 aperture space IV L ' ra = = -506 +47.86 d7 = 10.0 1.50048 66.0 @LS r @ _ -100.00 dg = 20.0 1.71300 53.9 Here, r1 to r mean. the cadia of the lenses L1 to Ls and d "_ to de combined to form members I to IV, their thicknesses and air gaps. The refractive indices n of the optical glasses are given for the e-line of the spectrum, as are the Ny values. The image plane is with B, the distance from this to the last lens surface r9 (= back focus) with s'.

Säbüliche Gliedei= des Systems sind erfahrungsgemäß meniskenförmig ausgebildet und kehren ihre hohlen Außenflächen dem Blendenraum d$ zu. Das bildseitige Positivglied IV enthält eine Kittfläche r8 ebenfalls positiver Brechkraft.Experience shows that the branches of the system are meniscus-shaped formed and turn their hollow outer surfaces to the diaphragm space d $. The image-side Positive member IV contains a cemented surface r8, also with positive refractive power.

Die Summe der Brechwerte der ersten drei Glieder I, II und III ist mit 5,11030 größer als oder mindestens gleich 5,0 und die Differenz der Brechwerte aü der lttiMäclie r8 mit 0,2i äfi'spfuchsgemäß größer als 0,18. Die Dicken sämtlicher Lüi§seft des systeftfs sind derart bemessen, daß die Mittendicken d 7 + d$ der beiden Linsen L4 und L5 des bildseitigen Kittgliedes IV mit 30,0 grö$ef giäd als die Mittendicken dl + ds+ d5 der ersten drei Einzelglieder I, 1I und III mit 22,6. Der Luftraum d zwischen dem zweiten und dritten Glied II un3 III hat die Form eines positiven Meniskus, womit sämtliche Bedingungen zur Erstellung eines Systems nach der Erfindung erfüllt sind.The sum of the refractive indices of the first three elements I, II and III is 5.11030 greater than or at least equal to 5.0 and the difference between the refractive indices aü the lttiMäclie r8 with 0.2i äfipfuchs according to greater than 0.18. The thicknesses of all lines of the system are dimensioned in such a way that the center thicknesses d 7 + d $ of the two lenses L4 and L5 of the image-side cemented element IV are 30.0 greater than the center thicknesses dl + ds + d5 of the first three individual elements I. , 1I and III with 22.6. The air space d between the second and third members II and III has the shape of a positive meniscus, with which all the conditions for creating a system according to the invention are met.

Claims (1)

Patentanspruch: Lichtstarkes photographisches oder kitienfatographisches Objektiv aus vier in Lift stehenden Gliedern, bei weichem drei der Seite der längeren Strahlenweite zugeordneten P-iüzelgliedern itfit tititersehiedlichen Brechkraftvorzeidhen nach deiil Blendenraum ein der Bildebene zugekehrtes Kittglied positiver Brechkraft folgt, g e k e n n -z e 1 c h fi e t d u r c h die nachfolgenden Kbihstruktldnsdaten mit der Maßgabe, daß die Radiet und Dicken der Linsen und Luftabstände - absolut genommen - bis zu 5% der Objektivbrennweite, die Brechzahlen der Gläser um 0,02 und ihre Ny-Werte um 2 Einheiten abweichen können. Öffnungsverhältnis 1: 2,0 f' = 100 s' = 55,07 Bildfeld = 45° ne ve +65,80 I L d = 8 6 169100 54,8 r2 = -I-200,00 1 d2 = 0,2 Luftabstand r = +35,98 11 L2 r4 = +87,46 ds = 12,0 1,69100 54,8 d4 = 3,0 Luftabstand III L rs = +166,90 r = -I-26,85 ds = 2,0 1,72830 28,7 s d6 = 9,6 Blendenraum L4 ra = -1-47,86 = -506,40 d7 = 10,0 1,50048 66,0 @L5 r9 = -100,00 d8 = 20,0 1,71300 53,9
In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 903 866, 719 677; britische Patentschrift Nr. 480 641.
Claim: Bright photographic or kitienfatographic lens consisting of four lifted members, with three P-element members assigned to the side of the longer beam width with different refractive powers after the aperture area followed by a cemented member with positive refractive power facing the image plane, marked 1 ch fi et by the following Kbihstruktldnsdaten with the proviso that the radius and thickness of the lenses and air gaps - taken in absolute terms - can deviate by up to 5% of the focal length of the lens, the refractive indices of the glasses by 0.02 and their Ny values by 2 units. Focal ratio 1: 2.0 f '= 100 s' = 55.07 field of view = 45 ° ne ve +65.80 IL d = 8 6 169 100 54.8 r2 = -I-200.00 1 d2 = 0.2 air gap r = +35.98 11 L2 r4 = +87.46 ds = 12.0 1.69 1 00 54.8 d4 = 3.0 air gap III L rs = +166.90 r = -I-26.85 ds = 2.0 1.72830 28.7 s d6 = 9.6 aperture space L4 ra = -1-47.86 = -506.40 d7 = 1 0.0 1.50048 66.0 @ L5 r9 = -100.00 d8 = 20.0 1.71300 53.9
Considered publications: German Patent Specifications No. 903 866, 719 677; British Patent No. 480,641.
DESCH32858A 1963-03-01 1963-03-01 Fast photographic or cinematographic lens made up of four parts standing in the air Pending DE1190216B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH32858A DE1190216B (en) 1963-03-01 1963-03-01 Fast photographic or cinematographic lens made up of four parts standing in the air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH32858A DE1190216B (en) 1963-03-01 1963-03-01 Fast photographic or cinematographic lens made up of four parts standing in the air

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DE1190216B true DE1190216B (en) 1965-04-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994576A (en) * 1974-04-20 1976-11-30 Carl Zeiss-Stiftung Objective lens system with five elements

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB480641A (en) * 1936-08-13 1938-02-25 Leitz Ernst Gmbh Improvements in or relating to optical lens systems
DE719677C (en) * 1940-03-03 1942-04-18 Optische Und Feinmechanische W Photographic lens
DE903866C (en) * 1942-09-06 1954-02-11 Zeiss Carl Fa Photographic lens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB480641A (en) * 1936-08-13 1938-02-25 Leitz Ernst Gmbh Improvements in or relating to optical lens systems
DE719677C (en) * 1940-03-03 1942-04-18 Optische Und Feinmechanische W Photographic lens
DE903866C (en) * 1942-09-06 1954-02-11 Zeiss Carl Fa Photographic lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994576A (en) * 1974-04-20 1976-11-30 Carl Zeiss-Stiftung Objective lens system with five elements

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