GB995932A - Improvements in or relating to lens systems - Google Patents

Improvements in or relating to lens systems

Info

Publication number
GB995932A
GB995932A GB1561063A GB1561063A GB995932A GB 995932 A GB995932 A GB 995932A GB 1561063 A GB1561063 A GB 1561063A GB 1561063 A GB1561063 A GB 1561063A GB 995932 A GB995932 A GB 995932A
Authority
GB
United Kingdom
Prior art keywords
relating
lens systems
edenalite
magnifications
clerk
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
GB1561063A
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.)
THOMAS BALLANTYNE CLERK
Original Assignee
THOMAS BALLANTYNE CLERK
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 THOMAS BALLANTYNE CLERK filed Critical THOMAS BALLANTYNE CLERK
Priority to GB1561063A priority Critical patent/GB995932A/en
Publication of GB995932A publication Critical patent/GB995932A/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

Abstract

995,932. Optical lenses. T.B.CLERK. (Edenalite Corporation). April 19,1963, No. 15610/63. Heading G2J. A symmetrical, air-spaced three element lens system, particularly for use in photo copying apparatus where a range of magnifications of from one-half to one, to two to one is desired, satisfies the following: - Optical data are given for the example shown and the ratio h 1 /h 3 lies between 1.17 and 1.22.
GB1561063A 1963-04-19 1963-04-19 Improvements in or relating to lens systems Expired GB995932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1561063A GB995932A (en) 1963-04-19 1963-04-19 Improvements in or relating to lens systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1561063A GB995932A (en) 1963-04-19 1963-04-19 Improvements in or relating to lens systems

Publications (1)

Publication Number Publication Date
GB995932A true GB995932A (en) 1965-06-23

Family

ID=10062243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1561063A Expired GB995932A (en) 1963-04-19 1963-04-19 Improvements in or relating to lens systems

Country Status (1)

Country Link
GB (1) GB995932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394071A (en) * 1980-09-03 1983-07-19 Canon Kabushiki Kaisha Lens system with fill-in lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394071A (en) * 1980-09-03 1983-07-19 Canon Kabushiki Kaisha Lens system with fill-in lens

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