GB583297A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB583297A
GB583297A GB2003144A GB2003144A GB583297A GB 583297 A GB583297 A GB 583297A GB 2003144 A GB2003144 A GB 2003144A GB 2003144 A GB2003144 A GB 2003144A GB 583297 A GB583297 A GB 583297A
Authority
GB
United Kingdom
Prior art keywords
doublet
taylor
radius
relating
divergent
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
GB2003144A
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
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 Taylor Taylor and Hobson Ltd filed Critical Taylor Taylor and Hobson Ltd
Priority to GB2003144A priority Critical patent/GB583297A/en
Publication of GB583297A publication Critical patent/GB583297A/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)

Abstract

583,297. Lenses. TAYLOR, TAYLOR, & HOBSON, Ltd., and WARMISHAM, A. Oct. 17, 1944, No. 20031. [Class 97 (i)] A corrected projection objective comprises two widely separated doublets each consisting of a convergent element disposed in front of but spaced slightly from a divergent element in which the radius of curvature R<1> of the front surface of the convergent element of the front doublet (i.e. the doublet nearest the longer congugate) is between 0.8 and 1.05 F., the radius R<2> is between F and 1.6 F., the ratio R<2> : R<3> is between 1 and 5: 4, the distance, S<2> is between 0.75 F. and 0.95 F. and the divergent element of the front doublet is of material having a refractive index between 1.64 and 1.72 and V number between 29 and 35, F being the equivalent focal length of the combination. Data are given. Specification 376,025 is referred to.
GB2003144A 1944-10-17 1944-10-17 Improvements in or relating to optical objectives Expired GB583297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2003144A GB583297A (en) 1944-10-17 1944-10-17 Improvements in or relating to optical objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2003144A GB583297A (en) 1944-10-17 1944-10-17 Improvements in or relating to optical objectives

Publications (1)

Publication Number Publication Date
GB583297A true GB583297A (en) 1946-12-13

Family

ID=10139212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2003144A Expired GB583297A (en) 1944-10-17 1944-10-17 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB583297A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744445A (en) * 1953-11-04 1956-05-08 Paillard Sa Photographic and projection objective of the petzval type
DE1086911B (en) * 1953-11-04 1960-08-11 Paillard Sa Petzval photographic lens
DE1260177B (en) * 1963-03-26 1968-02-01 Eastman Kodak Co Petzval lens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744445A (en) * 1953-11-04 1956-05-08 Paillard Sa Photographic and projection objective of the petzval type
DE1086911B (en) * 1953-11-04 1960-08-11 Paillard Sa Petzval photographic lens
DE1260177B (en) * 1963-03-26 1968-02-01 Eastman Kodak Co Petzval lens

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