GB191307229A - Improvements in or relating to Objectives for Optical Apparatus. - Google Patents

Improvements in or relating to Objectives for Optical Apparatus.

Info

Publication number
GB191307229A
GB191307229A GB191307229DA GB191307229A GB 191307229 A GB191307229 A GB 191307229A GB 191307229D A GB191307229D A GB 191307229DA GB 191307229 A GB191307229 A GB 191307229A
Authority
GB
United Kingdom
Prior art keywords
objectives
relating
optical apparatus
focal length
berthiot
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
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.)
Lacour Bertiliot SA Des Ets
Original Assignee
Lacour Bertiliot SA Des Ets
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 Lacour Bertiliot SA Des Ets filed Critical Lacour Bertiliot SA Des Ets
Application granted granted Critical
Publication of GB191307229A publication Critical patent/GB191307229A/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)
  • Prostheses (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

7229. Soc. Anon. des Etablissements Lacour-Berthiot. March 26, 1912, [Convention date]. Lenses.-An objective for telescopes, periscopes, &c. producing a curved image with its convexity towards the source of light comprises a front divergent system L1, L2, and a rear convergent system L3, L4, L5 of the same focal length and separated from it by this focal length. The front system may be composed of a single element.
GB191307229D 1912-03-26 1913-03-26 Improvements in or relating to Objectives for Optical Apparatus. Expired GB191307229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR191307229X 1912-03-26

Publications (1)

Publication Number Publication Date
GB191307229A true GB191307229A (en) 1914-03-26

Family

ID=34355635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191307229D Expired GB191307229A (en) 1912-03-26 1913-03-26 Improvements in or relating to Objectives for Optical Apparatus.

Country Status (1)

Country Link
GB (1) GB191307229A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685230A (en) * 1947-11-06 1954-08-03 Us Sec War Large aperture telephoto objective
US2715855A (en) * 1953-11-03 1955-08-23 Eastman Kodak Co Telephoto objective zonally corrected for spherical aberration
US3467133A (en) * 1968-01-23 1969-09-16 Charles E Justis Sr Double tapered faucet washer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685230A (en) * 1947-11-06 1954-08-03 Us Sec War Large aperture telephoto objective
US2715855A (en) * 1953-11-03 1955-08-23 Eastman Kodak Co Telephoto objective zonally corrected for spherical aberration
US3467133A (en) * 1968-01-23 1969-09-16 Charles E Justis Sr Double tapered faucet washer

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