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the color always varies even if the products are produced in the same lot

PowerSecure’s plan to exercise its option to increase its ownership of EfficientLights from 67% to 100% recognizes the highly successful results EfficientLights has posted to date, its strong backlog of orders for 2010, and its strong prospects for future growth. The transaction is expected to be accretive, and will involve the issuance of PowerSecure common shares in exchange for the remaining one-third minority interest in EfficientLights. The number of shares to be issued in exchange for the remaining one-third interest will be 1,000,000 shares, provided that if the average closing price of the PowerSecure shares over the ten days preceding the transaction is less than $10.00 per share, then the number of shares delivered increases to maintain a transaction value of $10.0 million. After the exercise of the EfficientLights option, EfficientLights will become a wholly-owned subsidiary and the Company will realize 100% of the EfficientLights profit, and will no longer reduce its net income for the amount attributable to the EfficientLights non-controlling interest.

Through use of “3-Step MacAdam ellipses” as a chromaticity control standard the necessary reduction in the variation in chromaticity is accomplished.
White LEDs are well-known in various fields such as for LCD TV’s backlights or lighting and they require strict color control of the chromaticity range, especially in white led highbay light for general lighting. Usually, the products need to be ranked and sorted according to the requirements before shipment, as the color always varies even if the products are produced in the same lot.

Since the chromaticity of a white LED is determined by a combination of many elements configuring the product such as a light-emitting device, phosphor, and encapsulation resin, a complicated process control is also needed to control those elements. We developed Surface Mount LED chips in 1983, and since then we have brought out a wide variety of products as a leading manufacturer of LED packages. Using basic studies and innovations of our accumulated high-precision processing technology and manufacturing technology has allowed us to finally achieve mass production with the chromaticity standard of about a ninth of the conventional chromaticity range by controlling the deviation from specific chromaticity coordinates and “elaborating” the products.

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