| 摘要 |
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. |
