We trace our beginnings back to the W.F. Blynn Company that was established in Colorado in 1937 representing housewares and lighting. As the lighting component continued to grow over the ensuing years with the addition of brands, such as Halo Lighting in 1962. It became apparent the need to start creating separate channels for the business. This occurred in 1972 with the launch of Illumination Systems as a DBA of the Blynn Company.

 In 1981, Illumination Systems was set up as an independent corporation ending the 44 year association with the Blynn Company.

The success story of our company has been based on a growing and loyal client base, the continuing development of the services we provide and most important skilled, knowledgeable, and dedicated staff.


ISI’s specification sales team is constantly being trained at the highest degree in order to provide the latest information throughout the design community including architects, engineers, interior designers, lighting designers, distributors and contractors. In addition, our outside sales teams are backed up with an inside technical service team that can offer comprehensive calculations using the latest in lighting design software, AGI32 and Autocad. Additionally, we can provide an energy analysis on your project to determine your anticipated payback for an upgraded lighting solution.

Office Locations

Illumination Systems

5 South Kalamath Street
Denver, CO 80223

Illumination Systems Billings

2817 2nd Avenue N
Suite 206
Billings, MT 59101

Illumination Systems Phoenix

4100 E Broadway
Suite 150
Phoenix, AZ 85040

Illumination Systems Tucson

2020 N Forbes Blvd
Unit 103
Tucson, AZ 85745