Global Lighting Technologies White Paper - Energy Watch News

Global Lighting Technologies White Paper

Light Guide Technology Enables Uniform and Bi-Directional Distribution from LEDs in General Lighting Applications. Fixture manufacturers have sought a solution for use in suspended light fixtures that will allow the light to be distributed upward, for indirect illumination, as well as downward, for direct illumination. The most common request has been for a semi-Lambertian distribution in the downward direction with low glare while achieving a bat-wing type distribution in the upward direction. This allows for the room below the light to be evenly illuminated, while the upward light illuminates the walls and surfaces to the sides of the fixture, creating an indirect illumination. This has now been accomplished by designing the individual light extraction features used within the light guide to control light in multiple directions. By changing the angle of these features, light can be directed substantially in the direction and area requested by the fixture manufacturer.

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