GB609408A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB609408A
GB609408A GB783146A GB783146A GB609408A GB 609408 A GB609408 A GB 609408A GB 783146 A GB783146 A GB 783146A GB 783146 A GB783146 A GB 783146A GB 609408 A GB609408 A GB 609408A
Authority
GB
United Kingdom
Prior art keywords
convergent
doublet
objective
separated
taylor
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
GB783146A
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 GB783146A priority Critical patent/GB609408A/en
Publication of GB609408A publication Critical patent/GB609408A/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

609,408. Lenses. TAYLOR, TAYLOR, & HOBSON, Ltd., and COX, A. March 13, 1946, No. 7831. [Class 97 (i)] A corrected objective comprises a front convergent member consisting of a convergent doublet in front of and slightly separated from a simple convergent component whose rear surface is separated from the front surface of a central simple divergent member by between .09 and .15 times the equivalent focal length of the objective, and a rear convergent doublet separated from the central member by not less than half and not more than twice the distance between that member and the front doublet, the rear doublet consisting of a convergent element and a divergent element having an AbbÚ V number at least 10 higher than the convergent element. The objective acts as a telephoto objective. The contact surfaces of the doublets may be cemented or slightly separated. Data for two examples of an objective of the type shown are given and for one example in which the rear doublet is reversed.
GB783146A 1946-03-13 1946-03-13 Improvements in or relating to optical objectives Expired GB609408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB783146A GB609408A (en) 1946-03-13 1946-03-13 Improvements in or relating to optical objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB783146A GB609408A (en) 1946-03-13 1946-03-13 Improvements in or relating to optical objectives

Publications (1)

Publication Number Publication Date
GB609408A true GB609408A (en) 1948-09-30

Family

ID=9840596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB783146A Expired GB609408A (en) 1946-03-13 1946-03-13 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB609408A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187033B (en) * 1961-08-02 1965-02-11 Schneider Co Optische Werke Photographic or cinematographic lens with a long focal length and high light intensity
GB2296783A (en) * 1995-01-06 1996-07-10 Samsung Aerospace Ind Telephoto and standard CCD camera lenses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187033B (en) * 1961-08-02 1965-02-11 Schneider Co Optische Werke Photographic or cinematographic lens with a long focal length and high light intensity
GB2296783A (en) * 1995-01-06 1996-07-10 Samsung Aerospace Ind Telephoto and standard CCD camera lenses
GB2296783B (en) * 1995-01-06 1999-06-23 Samsung Aerospace Ind Lens system for a charge coupled device camera

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