GB850117A - Improvements in or relating to photographic lenses - Google Patents

Improvements in or relating to photographic lenses

Info

Publication number
GB850117A
GB850117A GB1013958A GB1013958A GB850117A GB 850117 A GB850117 A GB 850117A GB 1013958 A GB1013958 A GB 1013958A GB 1013958 A GB1013958 A GB 1013958A GB 850117 A GB850117 A GB 850117A
Authority
GB
United Kingdom
Prior art keywords
dispersive
refractive index
elements
menisci
convergent
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
GB1013958A
Inventor
Eduard Hubert
Harry Zoellner
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.)
Jenoptik AG
Original Assignee
Carl Zeiss Jena GmbH
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 Carl Zeiss Jena GmbH filed Critical Carl Zeiss Jena GmbH
Priority to GB1013958A priority Critical patent/GB850117A/en
Publication of GB850117A publication Critical patent/GB850117A/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

Abstract

850,117. Photographic lenses. ZEISS JENA VEB., C. March 28, 1958, No. 10139/58. Class 97(1) A photographic lens consisting of 6 elements as shown, in which the power of the cemented surfaces of the dispersive menisci are convergent, the refractive indices of the two dispersive elements next to the diaphragm are at most 1À65 and the refractive index of the rear element of each of the two dispersive menisci is greater than that of the element cemented to it. Also (r3-r8) <0À02f (f=focal length of lens). The four convergent elements are of the same glass having refractive index between 1À65 and 1À70. The difference between the refractive index of the rear element and that of the front element of the rear dispersive meniscus is between 0À06 and 0À10. Optical data are given for one example.
GB1013958A 1958-03-28 1958-03-28 Improvements in or relating to photographic lenses Expired GB850117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1013958A GB850117A (en) 1958-03-28 1958-03-28 Improvements in or relating to photographic lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1013958A GB850117A (en) 1958-03-28 1958-03-28 Improvements in or relating to photographic lenses

Publications (1)

Publication Number Publication Date
GB850117A true GB850117A (en) 1960-09-28

Family

ID=9962230

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1013958A Expired GB850117A (en) 1958-03-28 1958-03-28 Improvements in or relating to photographic lenses

Country Status (1)

Country Link
GB (1) GB850117A (en)

Similar Documents

Publication Publication Date Title
GB931063A (en) Photographic objective
GB830713A (en) A photographic objective
GB779614A (en) Photographic objective
GB850117A (en) Improvements in or relating to photographic lenses
GB793093A (en) Improvements in and relating to objective lens systems
GB1164762A (en) Improvements in photographic lens systems
GB746201A (en) Improvement in lenses
GB1252086A (en)
GB766975A (en) Improvements in photographic objectives
GB978389A (en) Afocal lens system for use in front of a main lens, especially for a photographic camera
GB1130456A (en) A four component, six lens, objective
GB769241A (en) Improvements in and relating to asymmetrical photographic objectives
GB855706A (en) Three-component photographic objective
GB782213A (en) Three-lensed apochromatic objective
GB867649A (en) Photographic wide angle objective
GB873168A (en) Photographic objective
GB1095767A (en) Wide angle lens
GB720724A (en) Improvements in or relating to photographic objectives
GB1020462A (en)
GB575075A (en) Improvements relating to optical lenses
GB818807A (en) A wide aperture tele-photo-lens
GB836087A (en) Photographic objective
GB870189A (en) A photographic or cinematographic tele-objectives of a numerical aperture of at least 1:2.8
GB1015039A (en) Photographic objective
GB881942A (en) Improvements in or relating to optical objectives