DE441594C - Fast lens - Google Patents

Fast lens

Info

Publication number
DE441594C
DE441594C DEE32185D DEE0032185D DE441594C DE 441594 C DE441594 C DE 441594C DE E32185 D DEE32185 D DE E32185D DE E0032185 D DEE0032185 D DE E0032185D DE 441594 C DE441594 C DE 441594C
Authority
DE
Germany
Prior art keywords
fast lens
lens
collecting
chromatically
correcting
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
DEE32185D
Other languages
German (de)
Inventor
Ludwig Bertele
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Priority to DEE32185D priority Critical patent/DE441594C/en
Application granted granted Critical
Publication of DE441594C publication Critical patent/DE441594C/en
Expired 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

Lichtstarkes Objektiv. Für Mikroprojektion ist es erwünscht, ein besonders großes Öffnungsverhältnis zu erzielen. Die Erfindung bezieht sich auf ein solches Objektiv mit einem Öffnungsverhältnis von annähernd i : i, das aus vier sammelnden Gliedern besteht, die ein zerstreuendes Glied derart einschließen, daß sich zwei sammelnde Glieder vor dem negativen Glied und die beiden anderen sammelnden Glieder hinter jenem befinden. Um das Objektiv auch für photographische Zwecke benutzen zu können, muß eines der Glieder zur Erreichung einer entsprechenden chromatischen,- sphärischen und sphärochromatischen Korrektion aus mehreren Linsen zusammengesetzt werden. im folgenden Beispiel ist das zweite Glied zweifach verkittet. Es könnten aber auch eins oder mehrere der anderen Glieder aus verkitteten Linsen gebildet werden, um dieselbe Wirkung zu erzielen. Kommt es dagegen weniger auf Bildschärfe als auf Bildhelligkeit an, so können beide Kittflächen oder eine derselben weggelassen werden. Beispiel. F - too mm. ri -E- too,833 11D ttG, d1.-13,41 1,6068o 1,61968 r2 +873,940 l1 - 0,0o r2, -f- 67>758 d.2, = 2,4,00 i,56o6o 1,57215 r4 -211,743 d 3 =1059 1.6502o 1,67578 rs - 77,217 d4- 1,412 1,62715' 1,6482,o re +123,954 l2= 8,131 1i, -197,62,7 d5 = 2,117 i,67510 1,70302 r8 + 62,6o6 13-21J7 .r2, -[- 105,871 de - 8,47 1,62,2o2 1,63697 rio -145,68o l4 - 0,00 rli + 84,698 d7 - 8,47 1,622o2 1,63697 1i2 -f 415545 Fast lens. For microprojection it is desirable to achieve a particularly large aperture ratio. The invention relates to such a lens with an aperture ratio of approximately i: i, which consists of four converging members which include a diffusing member such that two converging members are in front of the negative member and the other two converging members are behind that. In order to be able to use the objective for photographic purposes, one of the elements must be composed of several lenses in order to achieve a corresponding chromatic, spherical and spherochromatic correction. in the following example the second link is cemented twice. However, one or more of the other members could be formed from cemented lenses to achieve the same effect. If, on the other hand, the focus is less on image sharpness than on image brightness, both cemented surfaces or one of them can be omitted. Example. F - too mm. ri -E- too, 833 11D ttG, d1.-13.41 1.6068o 1.61968 r2 +873.940 l1 - 0.0o r2, -f- 67> 758 d.2, = 2.4.00 i, 56o6o 1.57215 r4 -211.743 d 3 = 1059 1.6502o 1.67578 rs - 77.217 d4- 1.412 1.62715 '1.6482, o re +123.954 l2 = 8.131 1i, -197.62.7 d5 = 2.117 i, 67510 1.70302 r8 + 62.6o6 13-21J7 .r2, - [- 105.871 de - 8.47 1.62.2o2 1.63697 rio -145.68o l4 - 0.00 rli + 84.698 d7 - 8.47 1.622o2 1.63697 1i2 -f 415545

Claims (1)

PATENTANSPRUCH: Objektiv, dadurch gekennzeichnet, .daß es aus vier sammelnden Gliedern besteht, die ein zerstreuendes Glied derart ein. schließen, daß zwei sammelnde Glieder vor dem negativen Glied und die beiden anderen sammelnden Glieder hinter jenem angebracht sind, und dessen zweites positives Glied zwei Kittflächen hat, von denen die eine chromatisch überkorrigierend und die andere chromatisch unterkorrigierend wirkt. PATENT CLAIM: Lens, characterized .that it consists of four collecting members that form a dispersing member in such a way. conclude that two collecting links are attached in front of the negative link and the other two collecting links behind that, and the second positive link has two cemented surfaces, one of which is chromatically over-correcting and the other is chromatically under-correcting.
DEE32185D 1925-03-12 1925-03-12 Fast lens Expired DE441594C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE32185D DE441594C (en) 1925-03-12 1925-03-12 Fast lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE32185D DE441594C (en) 1925-03-12 1925-03-12 Fast lens

Publications (1)

Publication Number Publication Date
DE441594C true DE441594C (en) 1927-03-08

Family

ID=7075470

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE32185D Expired DE441594C (en) 1925-03-12 1925-03-12 Fast lens

Country Status (1)

Country Link
DE (1) DE441594C (en)

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