GB480641A - Improvements in or relating to optical lens systems - Google Patents

Improvements in or relating to optical lens systems

Info

Publication number
GB480641A
GB480641A GB15776/37A GB1577637A GB480641A GB 480641 A GB480641 A GB 480641A GB 15776/37 A GB15776/37 A GB 15776/37A GB 1577637 A GB1577637 A GB 1577637A GB 480641 A GB480641 A GB 480641A
Authority
GB
United Kingdom
Prior art keywords
relating
optical lens
positive
lens systems
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.)
Expired
Application number
GB15776/37A
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
Ernst Leitz 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, Ernst Leitz GmbH filed Critical Ernst Leitz Wetzlar GmbH
Publication of GB480641A publication Critical patent/GB480641A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only

Landscapes

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

Abstract

480,641. Lenses. LEITZ GES., E. June 7, 1937, No. 15776. Convention date. Aug. 13, 1936. [Class 97 (i)] In a rapid objective having eight or ten air exposed surfaces the first four of which have a collective effect and the fifth and sixth a highly dispersive effect, the first six air exposed surfaces are convex towards the object side and the curvature of the fourth is at least as great as the sum of those of the second and fifth surfaces. Of the aberrations from the aplanatic form of the first four surfaces, that of the fourth is positive and greatest, and that of the third is positive or negative and least. The second and third members each consist of simple lenses. The fourth member may be a cemented triplet, the central lens being biconvex. Data are given.
GB15776/37A 1936-08-13 1937-06-07 Improvements in or relating to optical lens systems Expired GB480641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE480641X 1936-08-13

Publications (1)

Publication Number Publication Date
GB480641A true GB480641A (en) 1938-02-25

Family

ID=6542569

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15776/37A Expired GB480641A (en) 1936-08-13 1937-06-07 Improvements in or relating to optical lens systems

Country Status (1)

Country Link
GB (1) GB480641A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649026A (en) * 1952-03-25 1953-08-18 Eastman Kodak Co Four component apochromatic copying objective
DE1190216B (en) * 1963-03-01 1965-04-01 Schneider Co Optische Werke Fast photographic or cinematographic lens made up of four parts standing in the air

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649026A (en) * 1952-03-25 1953-08-18 Eastman Kodak Co Four component apochromatic copying objective
DE1190216B (en) * 1963-03-01 1965-04-01 Schneider Co Optische Werke Fast photographic or cinematographic lens made up of four parts standing in the air

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