LED device allows divers to talk under water

April 22, 2013

THE ASAHI SHIMBUN

A company in Okinawa Prefecture has developed the world's first communications device that enables divers to "talk" with one another below the surface using light signals.

Marine Comms Ryukyu Inc.'s i-MAJUN system uses a light-emitting diode flashlight and a special diving mask that facilitates underwater communication.

The mask converts a diver's voice into blinking LED signals that are transmitted to another diver, where the signals are converted back into a voice that can be heard over speakers embedded in the mask.

The i-MAJUN system allows novice divers to take lessons on the spot. It is also expected to be used by professional divers to explore the seabed.

Marine Comms Ryukyu spent six years developing and improving the device, which retails for about 250,000 yen ($2,500).

THE ASAHI SHIMBUN
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A diving instructor, left, and a novice diver talk using the i-MAJUN light device under water in Zamami, Okinawa Prefecture, on April 16. (Satoru Sekiguchi)

A diving instructor, left, and a novice diver talk using the i-MAJUN light device under water in Zamami, Okinawa Prefecture, on April 16. (Satoru Sekiguchi)

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  • A diving instructor, left, and a novice diver talk using the i-MAJUN light device under water in Zamami, Okinawa Prefecture, on April 16. (Satoru Sekiguchi)

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