GB191503020A - Improvements in or relating to Lenses. - Google Patents

Improvements in or relating to Lenses.

Info

Publication number
GB191503020A
GB191503020A GB191503020DA GB191503020A GB 191503020 A GB191503020 A GB 191503020A GB 191503020D A GB191503020D A GB 191503020DA GB 191503020 A GB191503020 A GB 191503020A
Authority
GB
United Kingdom
Prior art keywords
lenses
spherical
curvatures
remove
spherical surfaces
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
Inventor
Arthur Knobloch
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB191503020A publication Critical patent/GB191503020A/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
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Landscapes

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

Abstract

3020. Knobloch, A. Feb. 24. Lenses.- A lens system, applicable particularly for photographic purposes, consists of two lenses with cemented spherical surfaces of curvatures such as practically to remove astigmatism, and has an outer surface which is not spherical but is so shaped as to remove spherical aberrations due to the spherical surfaces employed in the system. This outer surface may, as shown in the Figure, be of ellipsoidal form. Particulars of curvatures and glasses are given for one form. A double objective may be formed with two components constructed as described above, or a partially corrected component may be combined with a second component designed to correct the errors of the first.
GB191503020D 1915-02-24 1915-02-24 Improvements in or relating to Lenses. Expired GB191503020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191503020T 1915-02-24

Publications (1)

Publication Number Publication Date
GB191503020A true GB191503020A (en) 1916-02-03

Family

ID=32649070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191503020D Expired GB191503020A (en) 1915-02-24 1915-02-24 Improvements in or relating to Lenses.

Country Status (1)

Country Link
GB (1) GB191503020A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171646A1 (en) * 1984-08-17 1986-02-19 Robert Bosch Gmbh Motor vehicle headlamp for dipped light or fog light
US4938573A (en) * 1988-07-05 1990-07-03 Olympus Optical Co., Ltd. Objective lens system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171646A1 (en) * 1984-08-17 1986-02-19 Robert Bosch Gmbh Motor vehicle headlamp for dipped light or fog light
US4938573A (en) * 1988-07-05 1990-07-03 Olympus Optical Co., Ltd. Objective lens system

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