- Photopic vision: Vision under well-lit conditions, which provides for color perception, and which functions primarily due to cone cells in the eye.
- Mesopic vision: A combination of photopic vision and scotopic vision in low lighting, which functions due to a combination of rod and cone cells in the eye.
- Scotopic vision: Monochromatic vision in very low light, which functions primarily due to rod cells in the eye.
Roland, IA 50236
600 SW 7th St. Suite f
Des Moines, IA 50309
1891 Hwy 5 South
Albia, IA 52531
Celebrating 25 years
It all started with a retractable stern light in 1993. Today, we engineer and distribute a plethora of lighting including commercial, refrigeration, marine, truck & trailer, GENISYS PoE, and custom injection-molded products. From 1993 to 2018, innovation starts here.