FR1371676A - Vari-focal lens - Google Patents

Vari-focal lens

Info

Publication number
FR1371676A
FR1371676A FR950984A FR950984A FR1371676A FR 1371676 A FR1371676 A FR 1371676A FR 950984 A FR950984 A FR 950984A FR 950984 A FR950984 A FR 950984A FR 1371676 A FR1371676 A FR 1371676A
Authority
FR
France
Prior art keywords
vari
focal lens
focal
lens
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
FR950984A
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.)
Paillard SA
Original Assignee
Paillard SA
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 CH1337062A external-priority patent/CH381878A/en
Application filed by Paillard SA filed Critical Paillard SA
Priority to FR950984A priority Critical patent/FR1371676A/en
Application granted granted Critical
Publication of FR1371676A publication Critical patent/FR1371676A/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
    • G02B15/144—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 four groups only
    • G02B15/1445—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 four groups only the first group being negative
    • G02B15/144513—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 four groups only the first group being negative arranged --++
    • 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
    • G02B15/144—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 four groups only
    • G02B15/1441—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 four groups only the first group being positive
    • G02B15/144113—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 four groups only the first group being positive arranged +-++

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR950984A 1962-11-15 1963-10-17 Vari-focal lens Expired FR1371676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR950984A FR1371676A (en) 1962-11-15 1963-10-17 Vari-focal lens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1337062A CH381878A (en) 1962-11-15 1962-11-15 Vari-focal lens
FR950984A FR1371676A (en) 1962-11-15 1963-10-17 Vari-focal lens

Publications (1)

Publication Number Publication Date
FR1371676A true FR1371676A (en) 1964-09-04

Family

ID=25712152

Family Applications (1)

Application Number Title Priority Date Filing Date
FR950984A Expired FR1371676A (en) 1962-11-15 1963-10-17 Vari-focal lens

Country Status (1)

Country Link
FR (1) FR1371676A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2034349A1 (en) * 1969-07-12 1971-02-04 Canon K K , Tokio Vario optics

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2034349A1 (en) * 1969-07-12 1971-02-04 Canon K K , Tokio Vario optics

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