.ELD File Extension
Eulumdat Formatted Luminaire Data File
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What is an ELD file?
Luminaire data file used by DIALux, a professional light planning application for various lighting environments; contains lighting data for a light fixture, which include the light intensity, the light distribution curve, and the size of the luminaire; can be used interchangeably with a .LDT file.
ELD files are written in DIALux's Eulumdat format. They can be edited with the free LDT Editor program, which was developed by DIAL.