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This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "EULUMDAT" – news · newspapers · books · scholar · JSTOR (June 2024)

EULUMDAT is a data file format used for specification of photometric data especially intensity distributions from light sources such as lamps and luminaries. The file extension is .ldt. The format was proposed by Axel Stockmar (Light Consult Inc., Berlin) in 1990. The format is the European equivalent to the IES file format specified in IESNA LM-63. The data in an EULUMDAT file is usually measured using a goniophotometer. The IES file format is more formally specified and many measuring instruments support both formats of file.

Software

EULUMDAT files can be read with Photometry.

References

1. ANSI Approved Standard File Format for Electronic Transfer of Photometric Data and Related Information. ANSI/IESNA. 2002.
2. "Install Photometry on Linux | Flathub". Flathub - Apps for Linux. Retrieved 7 October 2024.

External links

• Definition for the EULUMDAT format

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