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DE1144941B - Telephoto lens - Google Patents

Telephoto lens

Info

Publication number
DE1144941B
DE1144941B DEO4884A DEO0004884A DE1144941B DE 1144941 B DE1144941 B DE 1144941B DE O4884 A DEO4884 A DE O4884A DE O0004884 A DEO0004884 A DE O0004884A DE 1144941 B DE1144941 B DE 1144941B
Authority
DE
Germany
Prior art keywords
telephoto lens
focal length
lens
individual
editorial
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
DEO4884A
Other languages
German (de)
Inventor
Franz Schlegel
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 DEO4884A priority Critical patent/DE1144941B/en
Priority to CH355305D priority patent/CH355305A/en
Priority to FR1162811D priority patent/FR1162811A/en
Publication of DE1144941B publication Critical patent/DE1144941B/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
    • G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length

Landscapes

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

Description

Die vorliegende Erfindung bezieht sich auf Teleobjektive zur fotografischen Aufnahme und betrifft einen vorteilhaften Aufbau für solche Objektive hoher Lichtstärke und Schärfenleistung, aber von kurzer Schnittweite, die 3O°/o der Brennweite nicht übersteigt. Dabei soll das Öffnungsverhältnis mindestens 1 : 4,5, der Bildwinkel mindestens 20° betragen. Schließlich soll die Blende nahe dem Negativglied gelegen sein, weil das Objektiv gemäß der Erfindung vorzugsweise in Kameras mit hinter dem Objektiv befindlichem Zentralverschluß benutzt werden soll.The present invention relates to and relates to telephoto lenses for taking photographs an advantageous structure for such lenses with high speed and sharpness, but of short focal length not exceeding 30 per cent of the focal length. The aperture ratio should be at least 1: 4.5, the angle of view must be at least 20 °. After all, the aperture should be close to that Negative member be located because the lens according to the invention preferably in cameras with behind the central shutter located next to the lens is to be used.

Unter diesen Voraussetzungen ist es erforderlich, das Positivglied mit größerem Durchmesser herzustellen, als es dem Öffnungsverhältnis entspricht, und es dann in mindestens zwei Komponenten aufzuspalten, von denen eine verkittet ist.Under these conditions it is necessary to produce the positive member with a larger diameter, than it corresponds to the aperture ratio, and then split it into at least two components, one of which is cemented.

Alles in allem wird die Aufgabe durch das Objektiv gemäß der Erfindung gelöst, dessen Querschnitt in der Figur angegeben ist und dessen Daten für /= 100 in der folgenden Tabelle wiedergegeben sind. Die Schnittweite beträgt s' = 28,8, die gesamte Baulänge L = 84,9. Die Daten des Systems sind folgende:All in all, the object is achieved by the objective according to the invention, the cross-section of which is indicated in the figure and the data for / = 100 are reproduced in the following table. The back focal length is s' = 28.8, the overall length L = 84.9. The data of the system are as follows:

TeleobjektivTelephoto lens

Anmelder:Applicant:

Optische Werke G. Rodenstock, München 5, Isartalstr. 39/43Optical works G. Rodenstock, Munich 5, Isartalstr. 39/43

Franz Schlegel, München-Obermenzing, ist als Erfinder genannt wordenFranz Schlegel, Munich-Obermenzing, has been named as the inventor

Brennweite betragen, gekennzeichnet durch folgende Daten, verstanden in beliebigen Längeneinheiten, wobei einzelne Krümmungen bis zu 10% der Gesamtbrechkraft, einzelne Dicken und Abstände bis zu 10% der Gesamtbrennweite, einzelne Brechzahlen bis zu 0,03 und einzelne Ny-Werte bis um 5 Einheiten abweichen können:Focal length, characterized by the following data, understood in any length units, with individual curvatures up to 10% of the total refractive power, individual thicknesses and distances up to 10% of the total focal length, individual refractive indices up to 0.03 and individual Ny values up to 5 units may differ:

η =η = +35,19+35.19 didi = 8,54= 8.54 1,51821/65,21.51821 / 65.2 OOOO 1,62041/60,31.62041 / 60.3 ηη = +35,19= +35.19 di = di = 8,548.54 1,51821/65,21.51821 / 65.2 Tz = Tz = + 121,4+ 121.4 kk = 0,69= 0.69 = +121,4= +121.4 /ι =/ ι = 0,690.69 Γ3 ==Γ3 == +31,98+31.98 CkCk = 10,08= 10.08 1,51821/65,2 3°1.51821 / 65.2 3 ° 1,62536/35,6 4°1.62536 / 35.6 4 ° rzrz = +31,98= +31.98 ck =ck = 10,0810.08 1,51821/65,21.51821 / 65.2 Γ4 =Γ4 = -105,45-105.45 ChCh = 2,08= 2.08 1,67270/32,21.67270 / 32.2 ηη = -105,45= -105.45 ch ch == 2,082.08 1,67270/32,21.67270 / 32.2 Γ5 —Γ5 - +41,44+41.44 kk = 32,32= 32.32 r$r $ = +41,44= +41.44 k —k - 32,3232.32 H —H - -15,21-15.21 didi = 0,69= 0.69 rere = -15,21= -15.21 ck =ck = 0,690.69 1,62041/60,31.62041 / 60.3 η = η = -69,31-69.31 kk = 0,23= 0.23 = -69,31= -69.31 k = k = 0,230.23 rs rs —- OOOO d5 d 5 = 1,46= 1.46 rsrs = OO= OO ch ch == 1,461.46 1,62536/35,61.62536 / 35.6 r9 = r9 = -28,08-28.08 Γ9Γ9 = -28,08= -28.08

PATENTANSPRUCH: jQ ^^ gezogene Druckschriften:PATENT CLAIM: j Q ^^ drawn print fonts:

Teleobjektiv, dessen Öffnungsverhältnis min- 45 Britische Patentschrift Nr. 697 366; destens 1 : 4,5, dessen Bildwinkel wenigstens
20° und dessen Schnittweite höchstens 30% derTelephoto lens with an aperture ratio of min- 45 British Patent No. 697 366; at least 1: 4.5, its angle of view at least
20 ° and its back focus not more than 30% of the

USA.-Patentschrift Nr. 2 631 497; Journal Opt. Soc. Amer. 46 (1956), S. 23 bis 31.U.S. Patent No. 2,631,497; Journal Opt. Soc. Amer. 46 (1956), pp. 23 to 31.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (1)

BUNDESREPUBLIK DEUTSCHLAND KL.42h 4/10FEDERAL REPUBLIC OF GERMANY KL.42h 4/10 INTERNAT. KL. G 02 bINTERNAT. KL. G 02 b DEUTSCHESGERMAN PATENTAMTPATENT OFFICE AUSLEGESCHRIFT 1144 941EXPLAINING EDITORIAL 1144 941 O 4884 IXa/42hO 4884 IXa / 42h ANMELDETAG. 19. MAI 1956REGISTRATION DAY. May 19, 1956 BEKANNTMACHUNG DER ANMELDUNG UNDAUSGABE DER AUSLEGESCHRIFT: 7. MÄRZ 1963NOTICE THE REGISTRATION AND ISSUE OF EDITORIAL: MARCH 7, 1963
DEO4884A 1956-05-19 1956-05-19 Telephoto lens Pending DE1144941B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEO4884A DE1144941B (en) 1956-05-19 1956-05-19 Telephoto lens
CH355305D CH355305A (en) 1956-05-19 1956-12-01 Telephoto lens
FR1162811D FR1162811A (en) 1956-05-19 1956-12-15 Telephoto

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO4884A DE1144941B (en) 1956-05-19 1956-05-19 Telephoto lens

Publications (1)

Publication Number Publication Date
DE1144941B true DE1144941B (en) 1963-03-07

Family

ID=7350460

Family Applications (1)

Application Number Title Priority Date Filing Date
DEO4884A Pending DE1144941B (en) 1956-05-19 1956-05-19 Telephoto lens

Country Status (3)

Country Link
CH (1) CH355305A (en)
DE (1) DE1144941B (en)
FR (1) FR1162811A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631497A (en) * 1952-02-21 1953-03-17 Harry J Graw Telephoto objective
GB697366A (en) * 1951-08-17 1953-09-23 Gordon Henry Cook Improvements in or relating to optical objectives

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB697366A (en) * 1951-08-17 1953-09-23 Gordon Henry Cook Improvements in or relating to optical objectives
US2631497A (en) * 1952-02-21 1953-03-17 Harry J Graw Telephoto objective

Also Published As

Publication number Publication date
FR1162811A (en) 1958-09-17
CH355305A (en) 1961-06-30

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