GB499290A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB499290A
GB499290A GB21066/38A GB2106638A GB499290A GB 499290 A GB499290 A GB 499290A GB 21066/38 A GB21066/38 A GB 21066/38A GB 2106638 A GB2106638 A GB 2106638A GB 499290 A GB499290 A GB 499290A
Authority
GB
United Kingdom
Prior art keywords
relating
optical objectives
action
ges
cemented
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
GB21066/38A
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon 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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Publication of GB499290A publication Critical patent/GB499290A/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 -
    • G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

499,290. Lenses. ZEISS IKON AKT.,GES. July 15, 1938, No. 21066. Convention date, Jan. 8. [Class 97 (i)] An objective consists of at least two air-spaced members of convergent action including between them a meniscus convex towards the object, the rear member being cemented and containing a bi-concave lens of divergent action bounded on both sides by media of higher refractive index. Data are given.
GB21066/38A 1938-01-08 1938-07-15 Improvements in or relating to optical objectives Expired GB499290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE499290X 1938-01-08

Publications (1)

Publication Number Publication Date
GB499290A true GB499290A (en) 1939-01-20

Family

ID=6545446

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21066/38A Expired GB499290A (en) 1938-01-08 1938-07-15 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB499290A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661660A (en) * 1952-01-19 1953-12-08 Bertele Ludwig Objective comprising three lens members axially air separated from each other in optical alignment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661660A (en) * 1952-01-19 1953-12-08 Bertele Ludwig Objective comprising three lens members axially air separated from each other in optical alignment

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