GB914835A - Photographic objective lens - Google Patents

Photographic objective lens

Info

Publication number
GB914835A
GB914835A GB967961A GB967961A GB914835A GB 914835 A GB914835 A GB 914835A GB 967961 A GB967961 A GB 967961A GB 967961 A GB967961 A GB 967961A GB 914835 A GB914835 A GB 914835A
Authority
GB
United Kingdom
Prior art keywords
objective
elements
objective lens
radii
march
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
GB967961A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB914835A publication Critical patent/GB914835A/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)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

914,835. Optical objectives. KODAK Ltd. March 16, 1961 [March 17, 1960], No. 9679/61. Class 97 (1). The two outer positive elements of a triplet objective are formed from polymethyl-methacrylate resin and the inner negative element is formed from a copolymer of acrylonitrile and styrene having a refractive index for the D line of the spectrum of 1.56. Preferably the outer surfaces of the positive elements and both surfaces of the negative elements have radii of curvature which, in numerical value, lie between 0.2f and 0.6f and the inner surfaces of the positive elements have radii of curvature greater than 0.6f, where f is the equivalent focal length of the objective. Optical data are given for one example of the objective shown.
GB967961A 1960-03-17 1961-03-16 Photographic objective lens Expired GB914835A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1564460A 1960-03-17 1960-03-17

Publications (1)

Publication Number Publication Date
GB914835A true GB914835A (en) 1963-01-09

Family

ID=21772617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB967961A Expired GB914835A (en) 1960-03-17 1961-03-16 Photographic objective lens

Country Status (1)

Country Link
GB (1) GB914835A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6101035A (en) * 1996-10-24 2000-08-08 Asahi Kogaku Kogyo Kabushiki Kaisha Triplet lens system with diffractive lens features

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6101035A (en) * 1996-10-24 2000-08-08 Asahi Kogaku Kogyo Kabushiki Kaisha Triplet lens system with diffractive lens features

Similar Documents

Publication Publication Date Title
GB1451885A (en) Image rotating optical system
GB772912A (en) An optical system of high acceptance angle
GB914835A (en) Photographic objective lens
FR1275487A (en) Light servo for astronomical glasses, photographic and cinematographic lenses
GB984466A (en) Improvements in or relating to projection objectives of continuously variable focal length
GB706605A (en) Photographic objective
GB592144A (en) Improvements in and relating to objectives suitable for photographic purposes
US2897724A (en) Large-aperture objective
GB1252086A (en)
GB820737A (en) Photographic teleobjective
GB1028995A (en) Photographic objectives
GB937333A (en) Afocal wide-angle supplementary objective
GB855706A (en) Three-component photographic objective
GB548253A (en) Improvements in or relating to photographic objectives
GB548252A (en) Improvements in or relating to high aperture objectives
GB548254A (en) Improvements in or relating to photographic objectives
GB671730A (en) Improvements in reversed telephoto objectives
GB612474A (en) Improvements in and relating to wide aperture objectives
GB1499861A (en) Optical lens system
GB1020462A (en)
GB818807A (en) A wide aperture tele-photo-lens
GB1034458A (en) Photographic objective
GB720724A (en) Improvements in or relating to photographic objectives
GB620635A (en) Improvements in or relating to photographic objectives
GB836087A (en) Photographic objective