Articles & Brochures



Browse our collection of technical topics, which include a variety of educational and informative
subjects in the form of articles, Acrobat PDF files and more. 

Binning & LED


White Paper: What is LED binning, why do it,
how to measure color temperature,
chromacity and more.


Color Quality and LED


White Paper: Color quality with respect to
digital LED lighting, color temperature,
CRI and CQS.


LED Photometric
Measurement and Efficiency


White Paper: Relative and absolute
photometry measurement and standards
for LED luminaires.

LED - Life and Depreciation


White Paper: IES Standard LM80
and measuring service life and
depreciation for LED systems.

Refractor Materials used in
Outdoor Luminaires


Images and article by R.A. Peterson, PE,
on the refractor materials used in
outdoor luminaires.

Historical Lighting


Learn more about how and why
period/historical-style lighting is so
popular and effective for many municipalities.

Luminaire Dirt Depreciation


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

Environmental Lighting


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.

Glass vs Plastic Reflectors


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