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Laboratoires dElectronique Philips SAS
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Laboratoires dElectronique et de Physique Appliquee
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Publication date
Application filed by Laboratoires dElectronique et de Physique AppliqueefiledCriticalLaboratoires dElectronique et de Physique Appliquee
Priority to FR7226410ApriorityCriticalpatent/FR2193210B1/fr
Publication of FR2193210A1publicationCriticalpatent/FR2193210A1/fr
Application grantedgrantedCritical
Publication of FR2193210B1publicationCriticalpatent/FR2193210B1/fr
G02B15/00—Optical objectives with means for varying the magnification
G—PHYSICS
G02—OPTICS
G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
G02B15/00—Optical objectives with means for varying the magnification
G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective