Luminaires, Photometry
Topics relative to luminaire definitions and photometrics.
Occasionally, Lighting Analysts will hear from one of our customers that our software can’t read their photometrric file (IES, Eulumdat, TM14)? Why would t...
Thu, 8 Feb, 2018 at 9:31 AM
Since there are no lamp lumens with absolute photometry, all SSL's (LED's) are considered 100% efficient (Efficiency = Luminaire Lumens / Lamp Lum...
Thu, 16 Feb, 2017 at 1:41 PM
Summary: In order to calculate BUG accurately*, the photometric web must include vertical angles from 0-180 degrees if there is any light at 90-degress ver...
Wed, 21 Jun, 2017 at 3:57 PM
Question: Is the light source always located at the Mounting Height (MH) value in the luminaire toolkit? Answer: No, not always. It depends on the calculat...
Thu, 6 Jul, 2017 at 4:47 PM
This article discusses the three photometric data categories: Type A, Type B and Type C. These types describe the photometric web surrounding the light sour...
Wed, 20 Feb, 2019 at 8:35 AM
Our friends at LTI Optics documented how to properly handle non-standard luminous shapes such as rings and long (straight or curvy) linear luminaires. N...
Mon, 25 Feb, 2019 at 11:42 AM