GB190717624A - Improvements in Objectives for Photographic Purposes. - Google Patents

Improvements in Objectives for Photographic Purposes.

Info

Publication number
GB190717624A
GB190717624A GB190717624DA GB190717624A GB 190717624 A GB190717624 A GB 190717624A GB 190717624D A GB190717624D A GB 190717624DA GB 190717624 A GB190717624 A GB 190717624A
Authority
GB
United Kingdom
Prior art keywords
lenses
objectives
glass
positive
diaphragm
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
Inventor
Rudolf Steinheil
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190717624A publication Critical patent/GB190717624A/en
Expired legal-status Critical Current

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  • Structure And Mechanism Of Cameras (AREA)
  • Lenses (AREA)

Abstract

17,624. Steinheil, R. Aug. 15, 1906, [date applied for under Patents Act, 1901]. Lenses.-An unsymmetrical object i v e consists of four lenses of two, kinds of glass ; two of the lenses, a biconvex and a biconcave, are cemented together on one side of the diaphragm, and the other two, a positive and a negative meniscus, are on the other side of the diaphragm separated from one another by an air space. The glass of the positive lenses is of greater refractive power but of less dispersion than that of the negative elements. Constructional data are given in the Specification. Specification No. 21,211, A.D. 1901, is referred to.
GB190717624D 1906-08-15 1907-08-01 Improvements in Objectives for Photographic Purposes. Expired GB190717624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE190717624X 1906-08-15

Publications (1)

Publication Number Publication Date
GB190717624A true GB190717624A (en) 1907-10-10

Family

ID=32603885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190717624D Expired GB190717624A (en) 1906-08-15 1907-08-01 Improvements in Objectives for Photographic Purposes.

Country Status (1)

Country Link
GB (1) GB190717624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623434A (en) * 1948-10-22 1952-12-30 Bendix Aviat Corp Three-component wide-angle camera objective

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623434A (en) * 1948-10-22 1952-12-30 Bendix Aviat Corp Three-component wide-angle camera objective

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