FR1385261A - Bright lens with progressively variable focal length - Google Patents

Bright lens with progressively variable focal length

Info

Publication number
FR1385261A
FR1385261A FR967309A FR967309A FR1385261A FR 1385261 A FR1385261 A FR 1385261A FR 967309 A FR967309 A FR 967309A FR 967309 A FR967309 A FR 967309A FR 1385261 A FR1385261 A FR 1385261A
Authority
FR
France
Prior art keywords
focal length
variable focal
bright lens
progressively variable
progressively
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
FR967309A
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.)
Meopta np
Original Assignee
Meopta np
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 Meopta np filed Critical Meopta np
Priority to FR967309A priority Critical patent/FR1385261A/en
Application granted granted Critical
Publication of FR1385261A publication Critical patent/FR1385261A/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
    • G02B15/146—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 more than five groups
    • G02B15/1461—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 more than five groups the first group being positive
FR967309A 1964-03-13 1964-03-13 Bright lens with progressively variable focal length Expired FR1385261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR967309A FR1385261A (en) 1964-03-13 1964-03-13 Bright lens with progressively variable focal length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR967309A FR1385261A (en) 1964-03-13 1964-03-13 Bright lens with progressively variable focal length

Publications (1)

Publication Number Publication Date
FR1385261A true FR1385261A (en) 1965-01-08

Family

ID=8825473

Family Applications (1)

Application Number Title Priority Date Filing Date
FR967309A Expired FR1385261A (en) 1964-03-13 1964-03-13 Bright lens with progressively variable focal length

Country Status (1)

Country Link
FR (1) FR1385261A (en)

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