GB247134A - Improvements in or relating to photographic objectives - Google Patents

Improvements in or relating to photographic objectives

Info

Publication number
GB247134A
GB247134A GB1796/26A GB179626A GB247134A GB 247134 A GB247134 A GB 247134A GB 1796/26 A GB1796/26 A GB 1796/26A GB 179626 A GB179626 A GB 179626A GB 247134 A GB247134 A GB 247134A
Authority
GB
United Kingdom
Prior art keywords
lenses
collective
relating
lens
photographic objectives
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
GB1796/26A
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 Anstalt CP Goerz AG
Original Assignee
Optische Anstalt CP Goerz 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 Optische Anstalt CP Goerz AG filed Critical Optische Anstalt CP Goerz AG
Publication of GB247134A publication Critical patent/GB247134A/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 -
    • G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only

Landscapes

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

Abstract

247,134. Optische Anstalt C. P. Goerz Akt.-Ges. Feb. 12, 1926, [Convention date]. Lenses. - A photographic objective, chromatically and astigmatically corrected, of the type comprising three components, of which the central one is a single bi-concave lens, is constructed with the front collective component composed of two outer collective lenses with a dispersive lens between and constituting a cemented triplet. The refractive index of the dispersive lens is lower than that of the collective lenses. Numerical data are given in the Specification.
GB1796/26A 1925-02-12 1926-01-21 Improvements in or relating to photographic objectives Expired GB247134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE247134X 1925-02-12

Publications (1)

Publication Number Publication Date
GB247134A true GB247134A (en) 1926-02-11

Family

ID=5935278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1796/26A Expired GB247134A (en) 1925-02-12 1926-01-21 Improvements in or relating to photographic objectives

Country Status (1)

Country Link
GB (1) GB247134A (en)

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