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Note 57. Light Distribution of Fixtures

The lighting energy conservation measures of the Energy Efficiency Manual stress effective light distribution for both energy efficiency and visual quality. This brief Note explains the light distribution patterns of light fixtures (luminaires) to aid you in lighting design and retrofit.

The Note explains the geometrical principles of light distribution, explains how to measure the light distribution patterns of installed light fixtures, and emphasizes the interaction between diffusers and luminaires.

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Note 57. Light Distribution