Files with LDT extension can be mainly foundas source files for ZEMAX program.

There are 2 other file types using
the LDT file extension!

empty icon.ldt - Oracle Database loader data

empty icon.ldt - Belkin Loadout Manager data

Detailed description

Software that works with ldt file extension

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LDT file extension - ZEMAX source EULUMDAT file

What is ldt file? How to open ldt files?

File type specification:

Various data file type icon Various data file type

The LDT file extension is used for ZEMAX source EULUMDAT files. These are source files that contain measured photometry data for a real lamp, provided in a common format known as the EULUMDAT format. An *.ltd file is used with the Source EULUMDAT file object in non-sequential mode.

The default software associated to ldt file type:

ZEMAX picture or screenshot

ZEMAX Development Corporation logoZEMAX  Microsoft Windows software

Company or developer:
ZEMAX Development Corporation

ZEMAX is designing software for optical engineers used to create lens design, illumination, laser beam propagation, stray light, freeform optical design etc.

Help how to open LDT files:

Use ZEMAX to open *.ldt files.

How to convert file with extension LDT:

Due the variability and uncertainty of this file type group, there is no general information available, about how to convert this various data file format. However most files with extension from this group are usually not in formats, which can be converted. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

Find conversions from ldt file:

ldt to ies

Find converter to ldt file type:

ies to ldt

List of software applications associated to the .ldt file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux etc.) and possible program actions
that can be done with the file
: like open ldt file, edit ldt file, convert ldt file, view ldt file, play ldt file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting ldt files.

  • Open ldt file
  • View ldt file
  • Convert ldt file
  • Create ldt file
  • Import ldt file
  • Export ldt file

Software that open ldt file - ZEMAX source EULUMDAT file

Click on the link to get more information about listed programs for open ldt file action.

Microsoft Windows:

Main software associated with ldt file by default:
Other suggested software:

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