FR1292894A - Système optique à focale variable adaptable devant les objectifs photographiques ou cinématographiques - Google Patents

Système optique à focale variable adaptable devant les objectifs photographiques ou cinématographiques

Info

Publication number
FR1292894A
FR1292894A FR866149A FR866149A FR1292894A FR 1292894 A FR1292894 A FR 1292894A FR 866149 A FR866149 A FR 866149A FR 866149 A FR866149 A FR 866149A FR 1292894 A FR1292894 A FR 1292894A
Authority
FR
France
Prior art keywords
photographic
optical system
focal length
variable focal
length optical
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
FR866149A
Other languages
English (en)
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.)
Jos Schneider Optische Werke GmbH
Original Assignee
Jos Schneider Optische Werke GmbH
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 DESCH28339A external-priority patent/DE1158280B/de
Application filed by Jos Schneider Optische Werke GmbH filed Critical Jos Schneider Optische Werke GmbH
Priority to FR866149A priority Critical patent/FR1292894A/fr
Application granted granted Critical
Publication of FR1292894A publication Critical patent/FR1292894A/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
    • 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
    • G02B15/144109—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)
FR866149A 1960-08-17 1961-06-27 Système optique à focale variable adaptable devant les objectifs photographiques ou cinématographiques Expired FR1292894A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR866149A FR1292894A (fr) 1960-08-17 1961-06-27 Système optique à focale variable adaptable devant les objectifs photographiques ou cinématographiques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DESCH28339A DE1158280B (de) 1960-08-17 1960-08-17 Vario-Vorsatz fuer photographische oder kinematographische Objektive
FR866149A FR1292894A (fr) 1960-08-17 1961-06-27 Système optique à focale variable adaptable devant les objectifs photographiques ou cinématographiques

Publications (1)

Publication Number Publication Date
FR1292894A true FR1292894A (fr) 1962-05-04

Family

ID=25992861

Family Applications (1)

Application Number Title Priority Date Filing Date
FR866149A Expired FR1292894A (fr) 1960-08-17 1961-06-27 Système optique à focale variable adaptable devant les objectifs photographiques ou cinématographiques

Country Status (1)

Country Link
FR (1) FR1292894A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320014A (en) * 1962-07-27 1967-05-16 Schneider Co Optische Werke Four component afocal front attachment for camera objectives
US3336094A (en) * 1962-01-20 1967-08-15 Schneider Co Optische Werke Varifocal teleobjective with movable negative components

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3336094A (en) * 1962-01-20 1967-08-15 Schneider Co Optische Werke Varifocal teleobjective with movable negative components
US3320014A (en) * 1962-07-27 1967-05-16 Schneider Co Optische Werke Four component afocal front attachment for camera objectives

Similar Documents

Publication Publication Date Title
CH425263A (fr) Objectif optique à longueur focale variable
CH514143A (de) Afokales Vorsatzlinsensystem zur Brennweitenänderung photographischer Objektive
FR1387564A (fr) Système optique pour des appareils photographiques ou cinématographiques
FR1280357A (fr) Objectif photographique à distance focale variable
CH386129A (fr) Système optique à distance focale variable
FR1275487A (fr) Asservisseur de lumière pour lunettes d'astronomie, objectifs photographiques et cinématographiques
FR1292894A (fr) Système optique à focale variable adaptable devant les objectifs photographiques ou cinématographiques
CH373905A (fr) Objectif optique à longueur focale variable
FR1448445A (fr) Système optique à lentilles cylindriques
CH411383A (fr) Objectif optique à longueur focale variable
CH452219A (fr) Objectif optique à longueur focale variable
CH363501A (fr) Objectif optique à longueur focale variable
FR1336300A (fr) Système optique à distance focale variable
CH438778A (fr) Objectif optique
CH386130A (fr) Système optique à distance focale variable
FR1180278A (fr) Objectif pour appareil photographique ou cinématographique à distance focale multiple
FR1322227A (fr) Système optique à distance focale variable
FR1539646A (fr) Dispositif optique à focale variable
FR1226191A (fr) Système optique afocal adaptable devant les objectifs de prise de vues photographiques ou cinématographiques
FR1308193A (fr) Objectif photographique ou cinématographique à distance focale variable
CH420659A (fr) Objectif optique de longueur focale variable
FR1150483A (fr) Système optique à distance focale variable
FR1218166A (fr) Téléobjectif photographique ou cinématographique
CH383029A (fr) Dispositif optique à longueur focale variable pour la projection de l'image d'un objet
FR1384443A (fr) Objectif photographique ou cinématographique à focale variable