Okinawan company starts selling “photic curtain”

Okinawan company starts selling

At the Okinawa Prefectural Government office on November 7, the executive director of Kanehide Aluminum Industry Co., Ltd., Yoshikazu Goya, explains how a "photic curtain" works.


November 8, 2013 Ryukyu Shimpo

The building company Future Planning has started selling a product called “photic curtain.” This is a window glass that becomes invisible inside by shining light-emitting diode light onto the whole glass. Kanehide Aluminum Industry Co., Ltd. will cooperate to produce and sell the glass. While the price is about 80,000 yen per square meter, 50 percent higher than that of ordinary glass, this will decrease for volume purchases.

Sumitomo Chemical Acrylic Sales, a subsidiary of Sumitomo Chemical, which co-developed the glass, Kanehide and Future Planning held a press conference at the Okinawa Prefectural Government office on November 7.

The glass enables people to see outside from inside. It turns into a mirror from the outside during the day, and is invisible inside at night because of the light-emitting diode light. The glass comes in about 250 colors.

The manufacturer places a transparent acrylic board between two pieces of glass to make the glass evenly bright. It is five to eight millimeters thicker than normal glass.

Kanehide plans to sell the product for use in houses, hotels and offices, shopping malls both in and outside Okinawa. The manufacturer is applying for a Japanese and global patent for the glass. The company aims to sell the product overseas in future.

The president of Future Planning, Tsuyoshi Nohara, is considering advertising by highlighting characters on the glass with the light. He said, “We want to add value to the product by developing its uses.”

(English translation by T&CT, Mark Ealey)

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