GB198592A - Improvements in telescopic attachments for hand cameras, and the like - Google Patents

Improvements in telescopic attachments for hand cameras, and the like

Info

Publication number
GB198592A
GB198592A GB2054222A GB2054222A GB198592A GB 198592 A GB198592 A GB 198592A GB 2054222 A GB2054222 A GB 2054222A GB 2054222 A GB2054222 A GB 2054222A GB 198592 A GB198592 A GB 198592A
Authority
GB
United Kingdom
Prior art keywords
attachment
lenses
aberrations
telescopic
hand cameras
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
GB2054222A
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.)
Kapella Ltd
Original Assignee
Kapella Ltd
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 Kapella Ltd filed Critical Kapella Ltd
Priority to GB2054222A priority Critical patent/GB198592A/en
Publication of GB198592A publication Critical patent/GB198592A/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
    • G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length

Abstract

198,592. Warmisham, A., and Kapella, Ltd. July 27, 1922. Lenses. - A magnifying or reducing telescopic attachment for photographic lenses has the corrections for the whole combination of attachment and lens effected by balancing the outstanding aberrations in the photographic lens against the opposite aberrations in the attachment. The attachment may comprise two simple lenses or a single cemented doublet. Numerical data are given in the Specification, and Specification 24720/99, [Class 98, Photography], is referred to.
GB2054222A 1922-07-27 1922-07-27 Improvements in telescopic attachments for hand cameras, and the like Expired GB198592A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2054222A GB198592A (en) 1922-07-27 1922-07-27 Improvements in telescopic attachments for hand cameras, and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2054222A GB198592A (en) 1922-07-27 1922-07-27 Improvements in telescopic attachments for hand cameras, and the like

Publications (1)

Publication Number Publication Date
GB198592A true GB198592A (en) 1923-06-07

Family

ID=10147606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2054222A Expired GB198592A (en) 1922-07-27 1922-07-27 Improvements in telescopic attachments for hand cameras, and the like

Country Status (1)

Country Link
GB (1) GB198592A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764064A (en) * 1952-08-09 1956-09-25 Zeiss Carl Objective lens for field glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764064A (en) * 1952-08-09 1956-09-25 Zeiss Carl Objective lens for field glass

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