GB190813901A - Improvements in and relating to Objectives. - Google Patents

Improvements in and relating to Objectives.

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Publication number
GB190813901A
GB190813901A GB190813901DA GB190813901A GB 190813901 A GB190813901 A GB 190813901A GB 190813901D A GB190813901D A GB 190813901DA GB 190813901 A GB190813901 A GB 190813901A
Authority
GB
United Kingdom
Prior art keywords
lens
positive
negative lens
objectives
relating
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
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.)
Optische Anstalt CP Goerz AG
Original Assignee
Optische Anstalt CP Goerz 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 Optische Anstalt CP Goerz AG filed Critical Optische Anstalt CP Goerz AG
Application granted granted Critical
Publication of GB190813901A publication Critical patent/GB190813901A/en
Expired legal-status Critical Current

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Abstract

13,901. Optische Anstalt C. P. Goerz Akt.-Ges. July 1, 1907, [date applied for under Section 91 of Patents &c. Act, 1907]. Lenses.-A four - lens uncemented objective consists of two unconnected halves, each comprising a positive and a negative lens separated by an air space in the shape of a positive meniscus, the refractive power of the negative lens in each half being not greater than that of the positive lens, and the focal length of one half being at least double that of the other. Constructional data are given, and Specification No. 12,859, A.D. 1898, is referred to.
GB190813901D 1907-07-01 1908-06-30 Improvements in and relating to Objectives. Expired GB190813901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE190813901X 1907-07-01

Publications (1)

Publication Number Publication Date
GB190813901A true GB190813901A (en) 1908-12-03

Family

ID=32404987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190813901D Expired GB190813901A (en) 1907-07-01 1908-06-30 Improvements in and relating to Objectives.

Country Status (1)

Country Link
GB (1) GB190813901A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297208A (en) * 1980-11-14 1981-10-27 Jude Engineering, Inc. Inclined helical flight conveyor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297208A (en) * 1980-11-14 1981-10-27 Jude Engineering, Inc. Inclined helical flight conveyor

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