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Omron starts production of double reflection LEDs

Japanese company Omron has commenced production of its double reflection LED package.
Omron Corporation of Kyoto, Japan, has begun marketing a lead (standard) type high-brightness Double Reflection (DR) LED that boosts the efficiency of light utilization by over two times compared with conventional LEDs. A high-power type will become available from January.

The DR-LED features Omron s proprietary double reflection structure. As shown in the illustration, the LED package has a convex mirror in the rear. Any light that suffers total internal reflection at the package/air interface is reflected backwards towards the mirror, then re-reflected out of the package.

Omron claims that the DR structure provides a two-fold increase in light utilization efficiency over conventional LEDs and twice the brightness given the same drive conditions. Conversely, the DR LED consumes half as much energy as a conventional LED to realize the same brightness.

Applications for the DR-LED include battery-driven traffic signals/road signs and mobile devices, signals requiring multiple LEDs, automobiles and other equipment for which low energy consumption is vital, along with a wide range of other potential uses. The high light utilization efficiency contributes to a reduction in the size of batteries or solar cells to drive the devices, and a reduction in the number of LEDs required for any specific application.

Omron aims to sell 30 million units of the DR-LED in fiscal year 2005, generating 4-5 billion yen ($33-42 million).

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