GB601837A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB601837A
GB601837A GB2593745A GB2593745A GB601837A GB 601837 A GB601837 A GB 601837A GB 2593745 A GB2593745 A GB 2593745A GB 2593745 A GB2593745 A GB 2593745A GB 601837 A GB601837 A GB 601837A
Authority
GB
United Kingdom
Prior art keywords
relating
doublet
taylor
curvature
radius
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
GB2593745A
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.)
Taylor Taylor and Hobson Ltd
Original Assignee
Taylor Taylor and Hobson Ltd
Filing date
Publication date
Application filed by Taylor Taylor and Hobson Ltd filed Critical Taylor Taylor and Hobson Ltd
Publication of GB601837A publication Critical patent/GB601837A/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)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

601,837. Optical objectives. TAYLOR, TAYLOR, & HOBSON, Ltd., and COX, A. Oct. 5, 1945, No. 25937. [Class 97 (i)] In an objective consisting, as shown, of a simple biconcave component between two convergent doublets, the biconvex element of each doublet is of material having a refractive index not less than 1.65 and at least 0.06 greater than that of the material of the divergent element of the doublet. The radius of curvature of each contact surface lies between 0.55 F. and 1.20 F., where F is the focal length of the objective, while the rear surface of the middle component has a radius of curvature between 0.4 F. and 0.6 F. The Specification includes optical data for three examples.
GB2593745A 1945-10-05 Improvements in or relating to optical objectives Expired GB601837A (en)

Publications (1)

Publication Number Publication Date
GB601837A true GB601837A (en) 1948-05-13

Family

ID=1739651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2593745A Expired GB601837A (en) 1945-10-05 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB601837A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645156A (en) * 1949-10-17 1953-07-14 Voigtlander & Sohn Ag Five-lens photographic objective comprising three members separated by air spaces
US2645154A (en) * 1949-10-17 1953-07-14 Voigtlander & Sohn Ag Five-lens photographic objective
US2771007A (en) * 1953-01-15 1956-11-20 Perkin Elmer Corp Objectives comprising two outer positive doublets enclosing a middle negative component for aerial photography
US2898808A (en) * 1955-12-17 1959-08-11 Agfa Camera Werk Ag Objective for enlargements

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645156A (en) * 1949-10-17 1953-07-14 Voigtlander & Sohn Ag Five-lens photographic objective comprising three members separated by air spaces
US2645154A (en) * 1949-10-17 1953-07-14 Voigtlander & Sohn Ag Five-lens photographic objective
US2771007A (en) * 1953-01-15 1956-11-20 Perkin Elmer Corp Objectives comprising two outer positive doublets enclosing a middle negative component for aerial photography
US2898808A (en) * 1955-12-17 1959-08-11 Agfa Camera Werk Ag Objective for enlargements

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