GB384009A - Improvements in or relating to photographic objectives - Google Patents

Improvements in or relating to photographic objectives

Info

Publication number
GB384009A
GB384009A GB26301/31A GB2630131A GB384009A GB 384009 A GB384009 A GB 384009A GB 26301/31 A GB26301/31 A GB 26301/31A GB 2630131 A GB2630131 A GB 2630131A GB 384009 A GB384009 A GB 384009A
Authority
GB
United Kingdom
Prior art keywords
objective
lens
lenses
positive
colour
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
GB26301/31A
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.)
Keller Dorian Colorfilm Corp
Original Assignee
Keller Dorian Colorfilm Corp
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 Keller Dorian Colorfilm Corp filed Critical Keller Dorian Colorfilm Corp
Publication of GB384009A publication Critical patent/GB384009A/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
    • G02B13/04—Reversed telephoto objectives

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Structure And Mechanism Of Cameras (AREA)
  • Lenses (AREA)

Abstract

384,009. Lenses ; colour photography. KELLER-DORIAN COLORFILM C O RPORATION, 522, 5th Avenue, New York, U.S.A. Sept. 19, 1931, No. 26301. Convention date, Oct. 13, 1930. [Class 97 (i).] A photographic objective, particularly in. tended for colour photography with lenticular films, comprises a collimating lens, a positive objective, and a negative lens placed in or in front of the anterior focal plane of the positive objective to increase the field, the positive objective comprising a number of components and including a colour filter at the focus of the collimating lens. The positive objective consists of a rear member comprising a concavoconvex lens 4 and bi-convex lens 5, and a front member comprising a bi-concave lens 7 and a bi-convex lens 8, the colour filter 6 being between the objective members in the focal plane of the collimating lens 2. The negative lens placed in front of the objective consists of a bi-concave element 11 and a meniscus 10. The objective is corrected for coma by adjusting the rear lenses thereof relatively to the front lenses.
GB26301/31A 1930-10-13 1931-09-19 Improvements in or relating to photographic objectives Expired GB384009A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US384009XA 1930-10-13 1930-10-13

Publications (1)

Publication Number Publication Date
GB384009A true GB384009A (en) 1932-12-01

Family

ID=21899738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26301/31A Expired GB384009A (en) 1930-10-13 1931-09-19 Improvements in or relating to photographic objectives

Country Status (1)

Country Link
GB (1) GB384009A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2423589A (en) * 2005-02-23 2006-08-30 Univ Warwick Wireless communication receiver with optical diverging element and filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2423589A (en) * 2005-02-23 2006-08-30 Univ Warwick Wireless communication receiver with optical diverging element and filter

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