IES Viewer

Upload and visualize IES photometric files in 3D with interactive controls and detailed analysis.

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About This Tool

The IES Viewer is a comprehensive online tool that allows lighting professionals, engineers, and designers to upload IES (Illuminating Engineering Society) photometric data files and visualize them in an interactive 3D environment. The tool parses IES files to extract critical lighting data including candela values, photometric angles, and luminaire specifications, then renders a detailed 3D representation of the light distribution. Users can rotate, zoom, and pan the visualization, adjust intensity scales, view cross-sections, and analyze photometric data through detailed metrics displayed in the results panel. The tool supports standard IES file formats (IES LM-63, IESNA) and provides both graphical visualization and numerical analysis of lighting performance.

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How to Use

Click the upload area or drag & drop an IES file.
Wait for the file to be parsed and validated.
Use mouse/touch to rotate, zoom, and pan the 3D visualization.
Adjust intensity scale and viewing options using the control panel.
View detailed photometric data and analysis in the results section.
Download visualization as PNG or data as CSV if needed.

Frequently Asked Questions

Find Quick Answers

What is an IES file?

IES (Illuminating Engineering Society) files are standard formats for photometric data that describe how light is distributed from a luminaire. They contain candela values at various angles, luminaire dimensions, and other lighting performance metrics.

What IES file formats are supported?

The tool supports IES LM-63 and IESNA standard formats. Files must have the .ies extension and follow the standard IES file structure with proper headers and data sections.

Can I analyze multiple IES files at once?

Currently, the tool processes one IES file at a time for optimal visualization clarity. You can upload different files sequentially to compare them.

What photometric data is displayed?

The tool extracts and displays candela distribution, vertical/horizontal angles, total lumens, photometric type, dimensions, and calculates metrics like maximum candela, beam angle, and uniformity ratios.

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