GB190907144A - Improvements in Collective Lenses with a Deformed Surface - Google Patents

Improvements in Collective Lenses with a Deformed Surface

Info

Publication number
GB190907144A
GB190907144A GB190907144DA GB190907144A GB 190907144 A GB190907144 A GB 190907144A GB 190907144D A GB190907144D A GB 190907144DA GB 190907144 A GB190907144 A GB 190907144A
Authority
GB
United Kingdom
Prior art keywords
radius
deformed surface
angle
lenses
less
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss 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 Carl Zeiss AG filed Critical Carl Zeiss AG
Application granted granted Critical
Publication of GB190907144A publication Critical patent/GB190907144A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

7144. Zeiss, C., [Firm of]. April 18, 1908, [Convention date]. Lenses.-In a collective lens, having a large relative aperture, which is spherically corrected by means of one deformed surface, the axial elements are so chosen that the sine condition is also fulfilled. Both surfaces of the lens may be convex, and the refractive index may be less than 1À618 and, in addition, if the angle of aperture 2 v of the deformed surface is smaller than or nearly equal to the angle 2 u of the spherical surface, the vertex radius r of the deformed surface is less than the radius R of the spherical surface, or if the angle 2 u is nearly equal to zero, the radius r is greater than the radius R. Constructional data are given for lenses having refractive indices 1À5, 1À618, and 1À75. Specification 8933/00 is referred to.
GB190907144D 1908-04-18 1909-03-25 Improvements in Collective Lenses with a Deformed Surface Expired GB190907144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE190907144X 1908-04-18

Publications (1)

Publication Number Publication Date
GB190907144A true GB190907144A (en) 1909-05-27

Family

ID=32405240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190907144D Expired GB190907144A (en) 1908-04-18 1909-03-25 Improvements in Collective Lenses with a Deformed Surface

Country Status (1)

Country Link
GB (1) GB190907144A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310817A1 (en) * 1987-09-05 1989-04-12 Firma Carl Zeiss Single lens reading glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310817A1 (en) * 1987-09-05 1989-04-12 Firma Carl Zeiss Single lens reading glass

Similar Documents

Publication Publication Date Title
GB190907144A (en) Improvements in Collective Lenses with a Deformed Surface
US1035408A (en) Lens for projection and photography.
US1169731A (en) Lens for placing before a photographic objective.
GB2121210A (en) Scanning objective having aspherical surface
US697959A (en) Lens system.
US1159233A (en) Ocular.
US1741947A (en) Photographic lens, corrected spherically, chromatically, astigmatically, and for coma
US2622479A (en) Three-component objective
US1794419A (en) Magnifier
US1448052A (en) Optical lens
US1253998A (en) Ophthalmic lens.
US805438A (en) Bifocal lens.
US766036A (en) Lens.
US547207A (en) Mersdorf
US1713708A (en) Photographic objective
US962929A (en) Hinged double telescope.
GB190915533A (en) Improvements in Meniscal Spectacle Glasses.
US52672A (en) Improvement in lenses
US873896A (en) Double objective.
US2052825A (en) Ophthalmic lens with elliptic segment
US1297040A (en) Lens.
US3171885A (en) Demagnifying mirror
US1021337A (en) Quadruple-lens objective.
GB190604523A (en) Improvements in Photographic Tele-objectives.
JPH043850B2 (en)