FR1247678A - Objectif lumineux de distance focale variable ayant au moins un intervalle de variation sextuple - Google Patents

Objectif lumineux de distance focale variable ayant au moins un intervalle de variation sextuple

Info

Publication number
FR1247678A
FR1247678A FR817895A FR817895A FR1247678A FR 1247678 A FR1247678 A FR 1247678A FR 817895 A FR817895 A FR 817895A FR 817895 A FR817895 A FR 817895A FR 1247678 A FR1247678 A FR 1247678A
Authority
FR
France
Prior art keywords
fold
focal length
variable focal
luminous lens
dimming interval
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
FR817895A
Other languages
English (en)
Inventor
Robert Geissler
Egon Kaiser
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.)
Kamera und Kinowerke Dresden VEB
Original Assignee
Kamera und Kinowerke Dresden VEB
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 Kamera und Kinowerke Dresden VEB filed Critical Kamera und Kinowerke Dresden VEB
Priority to FR817895A priority Critical patent/FR1247678A/fr
Application granted granted Critical
Publication of FR1247678A publication Critical patent/FR1247678A/fr
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR817895A 1960-02-08 1960-02-08 Objectif lumineux de distance focale variable ayant au moins un intervalle de variation sextuple Expired FR1247678A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR817895A FR1247678A (fr) 1960-02-08 1960-02-08 Objectif lumineux de distance focale variable ayant au moins un intervalle de variation sextuple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR817895A FR1247678A (fr) 1960-02-08 1960-02-08 Objectif lumineux de distance focale variable ayant au moins un intervalle de variation sextuple

Publications (1)

Publication Number Publication Date
FR1247678A true FR1247678A (fr) 1960-12-02

Family

ID=8724905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR817895A Expired FR1247678A (fr) 1960-02-08 1960-02-08 Objectif lumineux de distance focale variable ayant au moins un intervalle de variation sextuple

Country Status (1)

Country Link
FR (1) FR1247678A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346320A (en) * 1963-07-17 1967-10-10 Schneider Co Optische Werke High-speed varifocal objective
FR2106359A1 (fr) * 1970-09-08 1972-05-05 Eastman Kodak Co

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346320A (en) * 1963-07-17 1967-10-10 Schneider Co Optische Werke High-speed varifocal objective
FR2106359A1 (fr) * 1970-09-08 1972-05-05 Eastman Kodak Co

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