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GB476349A - Improvements in or relating to photographic objectives - Google Patents

Improvements in or relating to photographic objectives

Info

Publication number
GB476349A
GB476349A GB2383036A GB2383036A GB476349A GB 476349 A GB476349 A GB 476349A GB 2383036 A GB2383036 A GB 2383036A GB 2383036 A GB2383036 A GB 2383036A GB 476349 A GB476349 A GB 476349A
Authority
GB
United Kingdom
Prior art keywords
relating
photographic objectives
sum
surface effects
collective
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
GB2383036A
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.)
ALBRECHT WILHELM TRONNIER
Original Assignee
ALBRECHT WILHELM TRONNIER
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 ALBRECHT WILHELM TRONNIER filed Critical ALBRECHT WILHELM TRONNIER
Priority to GB2383036A priority Critical patent/GB476349A/en
Publication of GB476349A publication Critical patent/GB476349A/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

476,349. Lenses. TRONNIER, A. W. Aug. 31, 1936, No. 23830. [Class 97 (i)] In an objective of the kind referred to in Specification 476,348, in order to reduce the length of the system without increasing the aberrational and astigmatic errors the sum of the surface effects of the front collective component is made greater than one half the sum of the surface effects of the first two collective components.
GB2383036A 1936-08-31 1936-08-31 Improvements in or relating to photographic objectives Expired GB476349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2383036A GB476349A (en) 1936-08-31 1936-08-31 Improvements in or relating to photographic objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2383036A GB476349A (en) 1936-08-31 1936-08-31 Improvements in or relating to photographic objectives

Publications (1)

Publication Number Publication Date
GB476349A true GB476349A (en) 1937-12-07

Family

ID=10201997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2383036A Expired GB476349A (en) 1936-08-31 1936-08-31 Improvements in or relating to photographic objectives

Country Status (1)

Country Link
GB (1) GB476349A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165660A (en) * 1984-10-12 1986-04-16 Vivitar Corp Three group internal focusing lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165660A (en) * 1984-10-12 1986-04-16 Vivitar Corp Three group internal focusing lens

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