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.)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Priority to ES207061ApriorityCriticalpatent/ES207061A1/en
Publication of ES207061A1publicationCriticalpatent/ES207061A1/en
Treatments Of Macromolecular Shaped Articles
(AREA)
Eyeglasses
(AREA)
Optical Head
(AREA)
Abstract
Improvements introduced in magnetic electronic lenses with variable focal length characterized by comprising two permanent coaxial and discoidal magnets that are displaceable one with respect to the other and whose fields are substantially neutralized with respect to each other on the axis outside the magnets. (Machine-translation by Google Translate, not legally binding)
ES207061A1952-12-311952-12-31Improvements introduced in magnetic electronic lenses (Machine-translation by Google Translate, not legally binding)
ExpiredES207061A1
(en)