Importance

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Abstract

This disclosure provides systems, methods and apparatus for increasing the uniformity of illumination provided by frontlight systems using multiple discrete light sources. In one aspect, a phosphor material can be disposed between the discrete light sources and a light-turning waveguide, so that at least some of the light emitted by the discrete light sources is absorbed and re-emitted by the phosphor material. The light re-emitted by the phosphor material can have a more diffuse directional profile than the light emitted by the discrete light sources, and injecting this more diffuse light into the waveguide can reduce optical effects which provide non-uniform illumination across the waveguide.

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First Claim