FR1256418A - Variable focal length lens system - Google Patents

Variable focal length lens system

Info

Publication number
FR1256418A
FR1256418A FR826461A FR826461A FR1256418A FR 1256418 A FR1256418 A FR 1256418A FR 826461 A FR826461 A FR 826461A FR 826461 A FR826461 A FR 826461A FR 1256418 A FR1256418 A FR 1256418A
Authority
FR
France
Prior art keywords
focal length
lens system
length lens
variable focal
variable
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
FR826461A
Other languages
French (fr)
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.)
OPTIKYLE Inc
Original Assignee
OPTIKYLE Inc
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
Priority claimed from US811478A external-priority patent/US2983194A/en
Application filed by OPTIKYLE Inc filed Critical OPTIKYLE Inc
Priority to FR826461A priority Critical patent/FR1256418A/en
Application granted granted Critical
Publication of FR1256418A publication Critical patent/FR1256418A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
    • G02B15/1421—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only the first group being positive

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR826461A 1959-05-06 1960-05-06 Variable focal length lens system Expired FR1256418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR826461A FR1256418A (en) 1959-05-06 1960-05-06 Variable focal length lens system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US811478A US2983194A (en) 1959-05-06 1959-05-06 Variable focal length optical objective
FR826461A FR1256418A (en) 1959-05-06 1960-05-06 Variable focal length lens system

Publications (1)

Publication Number Publication Date
FR1256418A true FR1256418A (en) 1961-03-17

Family

ID=26185933

Family Applications (1)

Application Number Title Priority Date Filing Date
FR826461A Expired FR1256418A (en) 1959-05-06 1960-05-06 Variable focal length lens system

Country Status (1)

Country Link
FR (1) FR1256418A (en)

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