Rate it: IES: Integrated Earth Systems. Governmental » Institutes. Institute of Education Sciences.
Governmental » Environmental. Rate it: IES: Indoor Environmental Services. Rate it: IES: Institute of European Stud.
If you cannot open the IES file on your computer - there may be several reasons. Rate it: IES: In Eigener SacheHow to open IES files. Miscellaneous » Unclassified.
These are photometric data files. The IES file extension is primarily associated with Illumination Engineering Society of North America (IESNA) now known as the Illuminating Engineering Society. Material Properties - Photopia has a measured library of scattering and reflectance data for real materials, so what is simulated can be what is built.What is an IES file IES files mostly belong to Revit by Autodesk. IES lighting is essentially a text file that outlines how.
What Is Ies File Software Program To
We also have many comparisons of Photopia photometry versus lab tested photometry which always show very strong correlation. If they did not trust Photopia, they wouldn't use it. Just as you rely on a lighting software program to predict light levels, they rely on optical simulation to predict product performance. Physical Geometry - A Photopia simulation also requires an accurate CAD model of the reflector and lens components of a luminaire.Many manufacturers rely on Photopia to predict product performance and use it in their design process to save prototype costs and time. It describes the intensity of a light source at points on a spherical grid. Lamp Properties - Photopia has a library of lamps that have been modeled to provide the most accurate simulation.An IES file is a text file provided by a lighting manufacturer.
Lamp variations, material variations, and geometry variations can cause a wide range of performance that is not captured with a single measurement. Manufacturing tolerance - Often only one sample of a product is physically tested. Additionally, the installed location may not be at the same temperature as the lab, which will change lumen output and light levels.
This may not be very accurate, but is common practice.There are also aspects of simulated photometry which may not be accurate: There are many cases where a reflector may only be tested with the 35W CMH lamp, and then simply scaled to create an IES file for the 70W and 150W CMH lamps. Adjusted IES File? - Does the IES file represent the product that it is supposed to. With LEDs a manufacturer may send the highest lumen bins for testing, but then ship product with other bins of lower lumen output. Tested as Shipped? - Is the product that is shipped to a job the same as what was sent for testing? There is nothing (beyond reputation) to prevent a manufacturer from sending a Miro Silver reflector for testing to achieve a high efficiency and then shipping product with a lower grade material to save cost.
When asking if you can trust any photometry, it may be less about trusting the particular method of photometry, and more about trusting the company providing the photometry. Simulted as Built? - Is the product that is shipped out the same as what was simulated? Materials, lamps, lumen output, and geometry could all vary from the shipped product.Interestingly, many of these issues are very similar to issues with physical testing. Manufacturing tolerance - Simulations are typically done for the design condition, and often not for the range of tolerance on each component, including geometry, material properties and lamp output. Compact fluorescent lamps, induction lamps, T5 fluorescent lamps, and LEDs are known to be particularly temperature sensitive.
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