GB377537A - Improvements in lenses for photography and the like - Google Patents

Improvements in lenses for photography and the like

Info

Publication number
GB377537A
GB377537A GB3156131A GB3156131A GB377537A GB 377537 A GB377537 A GB 377537A GB 3156131 A GB3156131 A GB 3156131A GB 3156131 A GB3156131 A GB 3156131A GB 377537 A GB377537 A GB 377537A
Authority
GB
United Kingdom
Prior art keywords
exceeding
components
component
collective
dispersive
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
GB3156131A
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.)
HORACE WILLIAM LEE
Kapella Ltd
Original Assignee
HORACE WILLIAM LEE
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 HORACE WILLIAM LEE, Kapella Ltd filed Critical HORACE WILLIAM LEE
Priority to GB3156131A priority Critical patent/GB377537A/en
Publication of GB377537A publication Critical patent/GB377537A/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

377,537. Lenses. LEE, H. W. and KAPELLA, Ltd., 104, Stoughton Street, Leicester. Nov. 14, 1931, No. 31561. [Class 97 (i).] In a vide aperture lens corrected for spherical and chromatic aberrations, coma, astigmatism, and distortion, of the type described in Specification 157,040, [Class 97 (i), Optical Systems &c.], comprising two compound meniscus dispersive components with their concave surfaces facing each other, between two collective components having surfaces of different curvatures and having their more strongly curved surfaces turned outwards ; the concave exterior surface of the rear dispersive component has a radius R<6> exceeding 0À3f and the convex exterior surface of this component has a radius R<8> exceeding 0À4f, where f is the focal length of the system. The thickness of each of the dispersive components exceeds 0À14f. The collective elements of the two rear components have refractive indices exceeding 1.62. Preferably the ratio of the radii R<2> and R<1> exceeds 4À5 and that of the radii R<9> and R<10> does not exceed 7. The front collective component is preferably a single element with a refractive index not exceeding 1À61. Numerical data are given.
GB3156131A 1931-11-14 1931-11-14 Improvements in lenses for photography and the like Expired GB377537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3156131A GB377537A (en) 1931-11-14 1931-11-14 Improvements in lenses for photography and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3156131A GB377537A (en) 1931-11-14 1931-11-14 Improvements in lenses for photography and the like

Publications (1)

Publication Number Publication Date
GB377537A true GB377537A (en) 1932-07-28

Family

ID=10324946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3156131A Expired GB377537A (en) 1931-11-14 1931-11-14 Improvements in lenses for photography and the like

Country Status (1)

Country Link
GB (1) GB377537A (en)

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