GB146211A - Improvements in spherically, chromatically and astigmatically corrected objectives consisting of four lenses - Google Patents

Improvements in spherically, chromatically and astigmatically corrected objectives consisting of four lenses

Info

Publication number
GB146211A
GB146211A GB17429/20A GB1742920A GB146211A GB 146211 A GB146211 A GB 146211A GB 17429/20 A GB17429/20 A GB 17429/20A GB 1742920 A GB1742920 A GB 1742920A GB 146211 A GB146211 A GB 146211A
Authority
GB
United Kingdom
Prior art keywords
lenses
lens
chromatically
spherically
corrected objectives
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
GB17429/20A
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss 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 Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of GB146211A publication Critical patent/GB146211A/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

Abstract

146,211. Zeiss, C., [Firm of]. Oct. 15, 1917, [Convention date]. Lenses.-The lens I of a photographic objective of the type described in Specification 13061/02, [Class 98, Photography], is made of glass having a refractive index of not more than 1.57 for sodium light. The objective comprises a collective lens I facing the object, a dispersive lens II separated from the lens I by an air space, and a pair of lenses III, IV joined in a collective surface. The power of the facing surfaces of the lenses I, II is negative. Optical data are set forth in the Specification.
GB17429/20A 1917-10-15 1920-06-26 Improvements in spherically, chromatically and astigmatically corrected objectives consisting of four lenses Expired GB146211A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE146211X 1917-10-15

Publications (1)

Publication Number Publication Date
GB146211A true GB146211A (en) 1920-12-30

Family

ID=5671204

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17429/20A Expired GB146211A (en) 1917-10-15 1920-06-26 Improvements in spherically, chromatically and astigmatically corrected objectives consisting of four lenses

Country Status (1)

Country Link
GB (1) GB146211A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573512A (en) * 1949-04-30 1951-10-30 Voigtlander & Sohn Ag Four-lens triplet type photographic objective
US2573511A (en) * 1949-04-30 1951-10-30 Voigtlander & Sohn Ag Four-lens photographic objective
US2601369A (en) * 1950-02-02 1952-06-24 Taylor Taylor & Hobson Ltd Three-component optical objectives
DE950503C (en) * 1949-04-30 1956-10-11 Voigtlaender A G Four-lens photographic lens made up of three parts standing in the air

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573512A (en) * 1949-04-30 1951-10-30 Voigtlander & Sohn Ag Four-lens triplet type photographic objective
US2573511A (en) * 1949-04-30 1951-10-30 Voigtlander & Sohn Ag Four-lens photographic objective
DE950503C (en) * 1949-04-30 1956-10-11 Voigtlaender A G Four-lens photographic lens made up of three parts standing in the air
US2601369A (en) * 1950-02-02 1952-06-24 Taylor Taylor & Hobson Ltd Three-component optical objectives

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