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.)
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Optische Werke G Rodenstock
Original Assignee
Optische Werke G Rodenstock
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 Optische Werke G RodenstockfiledCriticalOptische Werke G Rodenstock
Priority to ES1979240588UpriorityCriticalpatent/ES240588Y/en
Publication of ES240588UpublicationCriticalpatent/ES240588U/en
Application grantedgrantedCritical
Publication of ES240588YpublicationCriticalpatent/ES240588Y/en
New projection focometer characterized in that for the determination of the optical value of glasses for frames with or without frames, contact lenses or the like, with a support for the crystal to be measured and a projection screen on which it strikes from behind, a optical path through the glass and can be varied with the help of adjustment elements and scales, the projection screen is arranged laterally and at a short distance between the elements of the support and adjustment, inclining in a vertical and horizontal direction in such a way that the perpendicular to the projection screen, is oriented to the ocular field of a person who is about 30 centimeters from the adjustment and support elements. (Machine-translation by Google Translate, not legally binding)
ES1979240588U1979-01-091979-01-09
NEW PROJECTION FOCOMETER
ExpiredES240588Y
(en)