GB188621A - Improvements in photographic lenses - Google Patents

Improvements in photographic lenses

Info

Publication number
GB188621A
GB188621A GB1834122A GB1834122A GB188621A GB 188621 A GB188621 A GB 188621A GB 1834122 A GB1834122 A GB 1834122A GB 1834122 A GB1834122 A GB 1834122A GB 188621 A GB188621 A GB 188621A
Authority
GB
United Kingdom
Prior art keywords
photographic lenses
photographic
lenses
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
GB1834122A
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.)
ROSS Ltd
Original Assignee
ROSS Ltd
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 ROSS Ltd filed Critical ROSS Ltd
Priority to GB1834122A priority Critical patent/GB188621A/en
Publication of GB188621A publication Critical patent/GB188621A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/02Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
GB1834122A 1922-07-04 1922-07-04 Improvements in photographic lenses Expired GB188621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1834122A GB188621A (en) 1922-07-04 1922-07-04 Improvements in photographic lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1834122A GB188621A (en) 1922-07-04 1922-07-04 Improvements in photographic lenses

Publications (1)

Publication Number Publication Date
GB188621A true GB188621A (en) 1922-11-16

Family

ID=10110792

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1834122A Expired GB188621A (en) 1922-07-04 1922-07-04 Improvements in photographic lenses

Country Status (1)

Country Link
GB (1) GB188621A (en)

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