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White Paper: What is LED binning, why do it, how to measure color temperature, chromacity and more.
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White Paper: Color quality with respect to digital LED lighting, color temperature, CRI and CQS.
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LED Photometric Measurement & Efficiency
White Paper: Relative and absolute photometry measurement and standards for LED luminaires.
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White Paper: IES Standard LM80 and measuring service life and depreciation for LED systems.
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Refractor Materials Used in Outdoor Luminaires
Images and article by R.A. Peterson, PE, on the refractor materials used in outdoor luminaires.
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Learn more about how and why period/historical-style lighting is so popular and effective for many municipalities.

White Paper: Review the issue of luminaire dirt depreciation as it relates to luminaire design and construction.

White Paper: Review the various cutoff classifications as they pertain to night-sky-friendly outdoor lighting.

Lighting the Great Out-of-Doors for Functionality and Effect
Article: Defining lighting objectives to create an environment and dramatic effect in your outdoor applications.

Article: Learn the pros and cons of specifying glass vs. plastic reflectors in your luminaires.

Effectively Lighting Wastewater & Water Treatment Facilities
Article: Understand the unique lighting challenges of a demanding environment for a safe and efficient solution.

