FR516744A - Lens enhancements for cameras and other applications - Google Patents

Lens enhancements for cameras and other applications

Info

Publication number
FR516744A
FR516744A FR516744A FR516744DA FR516744A FR 516744 A FR516744 A FR 516744A FR 516744 A FR516744 A FR 516744A FR 516744D A FR516744D A FR 516744DA FR 516744 A FR516744 A FR 516744A
Authority
FR
France
Prior art keywords
enhancements
cameras
lens
applications
lens enhancements
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
FR516744A
Other languages
French (fr)
Inventor
Lionel Barton Booth
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
Application granted granted Critical
Publication of FR516744A publication Critical patent/FR516744A/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
    • G02B13/02—Telephoto 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)
FR516744A 1919-07-25 1920-06-09 Lens enhancements for cameras and other applications Expired FR516744A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB516744X 1919-07-25

Publications (1)

Publication Number Publication Date
FR516744A true FR516744A (en) 1921-04-25

Family

ID=10460951

Family Applications (1)

Application Number Title Priority Date Filing Date
FR516744A Expired FR516744A (en) 1919-07-25 1920-06-09 Lens enhancements for cameras and other applications

Country Status (1)

Country Link
FR (1) FR516744A (en)

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