DEVICE AND METHOD FOR DETERMINING A WRITING OR READING MODE

The invention relates to a device for determining a writing or reading mode of a person wearing spectacles including a frame and two lenses, the device comprising, according to the invention, means for measuring the distance between an element of the frame or the head and a working plane, means for...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	HADDADI, Ahmed
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALARM SYSTEMS CONTACT LENSES OPTICS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
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