Lamp with a CRI of 90 or above, good. Lamp with a CRI of less than 80, bad. Is there anything else that lighting designers need to know about the Color Rendering Index (CRI) metric? To be brutally honest … no. Despite all that has been written on the topic over the past decade, the importance of CRI to everyday lighting design today is minimal...
Ian Ashdown is a SunTrackers's Senior Scientist and a consultant with over forty years’ experience in lighting design, research and development, and software engineering (He built the original version of AGI32). He holds more than 160 patents and patents pending. Listening to Ian, deploying advanced lighting into practical tools and software...
In this installment of Senior Member Insights, OPN talks with Ian Ashdown, senior scientist and president of SunTracker Technologies in Victoria, BC, Canada. He and his team develop lighting-design software for architectural, horticultural, entertainment and health applications. Ashdown is a consultant with more than 40 years’ experience in...
https://www.youtube.com/watch?v=qewhmzRJITU SunTracker Technologies Ltd. is excited to release the newest version of our free DLI Calculator with a new Global feature on June 1, 2021. Users will be able to visualize the DLI values on the interactive map with one button. The entire Earth will be pictured in terms of DLI values, with...
Cerise365™ and DAYSIM are daylighting analysis software programs that perform climate-based annual daylight simulations, including the calculation of annual daylight metrics. This white paper compares their performance in terms of accuracy and calculation times. Average illuminance and spatial daylight autonomy values agree to within 8...
