DEVICE AND METHOD FOR DETERMINING A WRITING OR READING MODE

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

Gespeichert in:
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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Beschreibung
Zusammenfassung: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 measuring an angle of inclination (α) of a median plane of the two lenses relative to the vertical in a vertical median plane (P) of the head perpendicular to the median plane, and control means suitable for comparing the measured angle of inclination (α) with a set angle of inclination and for determining a reading mode or a writing mode of the person according to the comparison, the reading mode being associated with a predetermined set reading distance, and the writing mode being associated with a predetermined set writing distance.