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GB261326A - Improvements relating to lens systems - Google Patents

Improvements relating to lens systems

Info

Publication number
GB261326A
GB261326A GB2267126A GB2267126A GB261326A GB 261326 A GB261326 A GB 261326A GB 2267126 A GB2267126 A GB 2267126A GB 2267126 A GB2267126 A GB 2267126A GB 261326 A GB261326 A GB 261326A
Authority
GB
United Kingdom
Prior art keywords
lenses
collective
diaphragm
corrected
focal length
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
GB2267126A
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
Priority to GB2267126A priority Critical patent/GB261326A/en
Publication of GB261326A publication Critical patent/GB261326A/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

Landscapes

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

Abstract

261,326. Rudolph, P. Sept. 14, 1926. Lenses. - Photographic and projection lenses corrected for spherical aberrations of the second order, for coma and astigmatism and corrected for all colour aberrations of the first order, consist of four or five single or cemented lenses, separated by air spaces, one of the outer lenses being collective and the lenses separated by air gaps being alternately collective and dispersive. The collective lens next the diaphragm has a focal length less than three times the focal length of the complete lens and his its concave surface turned towards the diaphragm. Numerical data of two examples are given in the Specification.
GB2267126A 1926-09-14 1926-09-14 Improvements relating to lens systems Expired GB261326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2267126A GB261326A (en) 1926-09-14 1926-09-14 Improvements relating to lens systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2267126A GB261326A (en) 1926-09-14 1926-09-14 Improvements relating to lens systems

Publications (1)

Publication Number Publication Date
GB261326A true GB261326A (en) 1926-11-18

Family

ID=10183210

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2267126A Expired GB261326A (en) 1926-09-14 1926-09-14 Improvements relating to lens systems

Country Status (1)

Country Link
GB (1) GB261326A (en)

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