GB685334A - Improvements in and relating to objective lenses - Google Patents

Improvements in and relating to objective lenses

Info

Publication number
GB685334A
GB685334A GB23679/50A GB2367950A GB685334A GB 685334 A GB685334 A GB 685334A GB 23679/50 A GB23679/50 A GB 23679/50A GB 2367950 A GB2367950 A GB 2367950A GB 685334 A GB685334 A GB 685334A
Authority
GB
United Kingdom
Prior art keywords
less
component
radii
lenses
stop
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
GB23679/50A
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.)
Voigtlander AG
Original Assignee
Voigtlander AG
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 Voigtlander AG filed Critical Voigtlander AG
Publication of GB685334A publication Critical patent/GB685334A/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

685,334. Optical objectives. VOIGTLANDER & SOHN AKT.-GES. Sept. 27, 1950 [Jan. 16, 1950], No. 23679/50. Class 97 (i). In an anistigmat of modified Gausss type having two lens combinations arranged one on each side of an internal stop, each combination consisting of a meniscus dispersing component adjacent to the stop and a collecting component beyond the dispersing component and having its outermost surface concave to the stop, the two components of the front combination being menisci concave to the stop and each consisting of two lenses of opposite sign which lenses have broken contact or are cemented together, the front lens of the front meniscus component is a meniscus lens of such dispersing power that the radii of the adjacent surfaces of the lenses of this component are less than the radius of each of the other two surfaces of this component and are also less than two-thirds of the objective focal length. The front combination of the objective shown consists of lens groups I and II, the radii of the adjacent surfaces R2, R2<SP>1</SP> of the lenses of the front component being less than the radii of surfaces R1 and R3 and less than the two-thirds of the focal length. Preferably, the radii R2, R2<SP>1</SP> are each less than 80 per cent of the diameter D of the objective entrance pupil and less than the radius of each of the surfaces R5, R5<SP>1</SP>. Also, the sum of the radii R1 and R6 may lie between 0.8D and 1.8D, while the difference thereof is less than 0.8D. Optical data are given for one example.
GB23679/50A 1950-01-16 1950-09-27 Improvements in and relating to objective lenses Expired GB685334A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH685334X 1950-01-16

Publications (1)

Publication Number Publication Date
GB685334A true GB685334A (en) 1952-12-31

Family

ID=4528809

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23679/50A Expired GB685334A (en) 1950-01-16 1950-09-27 Improvements in and relating to objective lenses

Country Status (1)

Country Link
GB (1) GB685334A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899122A (en) * 1987-12-05 1990-02-06 Abb Ceag Licht- Und Stromversorgungstechnik Gmbh Transformer, choke and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899122A (en) * 1987-12-05 1990-02-06 Abb Ceag Licht- Und Stromversorgungstechnik Gmbh Transformer, choke and the like

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