Conversion of ldt files to ies file format

Different types of photometric file formats are used all over the world for light management purposes. The Eulumdat (.ldt) format is mostly used in Europe whilst IESNA format (.ies) is mostly used in USA and in the Anglo-Saxon world. It is very likely that you can perform ldt to ies conversion  in various light management software.

Open LDT file    Open IES file

Related software


A light calculation software

IES to EULUMDAT Converter

An online converter for IES and LDT files

LITESTAR 4D Photoview

A lamp light photometry management software


A design software for optical engineers