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Toshiba Corp announced May 30, 2011, that it has developed a portable OLED lamp for use in quake-hit areas in Japan.

Toshiba plans to produce 100 units of the OLED lamp and has already donated 50 units to an evacuation center in Kesennuma City, Miyagi Prefecture, together with solar-powered rechargeable batteries. The company expects them to be used as reading lamps, etc. But, currently, it is not planning to sell the lamp to general consumers.

The OLED lamp is powered by four AAA alkaline batteries. Also, the solar-powered rechargeable battery can be used via a USB port. The lamp measures 146 x 100 x 18.5mm (at the thickest part. And its weight is 180g without alkaline batteries.

"Though we purchase the materials of the lamp from other companies, its OLED panel is manufactured by us," Toshiba said.

The brightness of the lamp can be chosen from 100%, 30% and 10%. The 100% brightness is 53lm, which the company claims is as bright as a desk lamp. On the other hand, the 10% brightness is equivalent to the brightness of a mobile phone, it said.

When alkaline batteries are used, the lamp can be continuously used for two hours with the 100% brightness, for 10 hours with the 30% brightness and for 20 hours with the 10% brightness. When the rechargeable battery is fully charged, the lamp can be used for three to four times longer with each of the brightnesses, Toshiba said.