| 摘要 |
The invention relates to a device (1) for determining a writing or reading mode of a person wearing spectacles including a frame (4) and two lenses (5), the device (1) comprising, according to the invention, means (3, 31, 33) for measuring the distance between an element of the frame (4) or the head and a working plane (12), means for measuring an angle of inclination (α) of a median plane (10) of the two lenses (5) relative to the vertical (14) in a vertical median plane (P) of the head perpendicular to the median plane (10), 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. |
