---
title: "Irradiance Map Viewer"
canonical: "https://documentation.chaos.com/space/VMAX/113586516/Irradiance%20Map%20Viewer"
format: markdown
---
<span style="color: #000000">The Irradiance map viewer can be used to view, merge and save light map files created by V-Ray. It works with Irradiance maps and Light Cache maps.</span>


## <span style="color: #000000">**Overview**</span>

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## <span style="color: #000000">**Installation**</span>

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The Irradiance Map viewer tool is installed along with V-Ray for 3ds Max. To access the Irradiance Map viewer, go to:

**Start Menu > Programs > V-Ray for 3ds Max > Tools > Irradiance Map viewer** for Windows 10 and earlier.

**Start Menu > All apps > V-Ray for 3ds Max > Irradiance Map viewer **for Windows 11.

Start the **imapviewer **executable from:

**C:\Program Files\Chaos\V-Ray\3ds Max 20xx\bin **for V-Ray for 3ds Max 2021 or earlier.

**C:\ProgramData\Autodesk\ApplicationPlugins\VRay3dsMax20xx\bin** for 3ds Max 2022 or later.


> Macro (excerpt-include)