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Lasers Assist the Blind

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Breck Hitz

A Pennsylvania inventor has developed a laser-based device that surpasses the traditional canes used by the blind to feel their way through the world. Nazir A. Ali, president and founder of Nurion-Raycal in Paoli, said that he has sold more than 400 of the $2990 LaserCanes and that there is a long waiting list of people wanting to purchase one. The LaserCane employs diode lasers directed upward, forward and downward, and gated detectors monitor the returning light. Reflected light from the upward or forward channels indicates an obstacle. The absence of reflected light from the downward...Read full article

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    Published: June 2003
    Accent on ApplicationsApplicationsblindcaneslaser-based deviceLaserCanesNurion-RaycalSensors & Detectors

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