---
title: "V-Ray Light Sun"
canonical: "https://documentation.chaos.com/space/VRHINO/116130306/V-Ray%20Light%20Sun"
format: markdown
---
This page provides information about the Sun Light in V-Ray for Grasshopper.


## **Overview**

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## **Input Parameters**

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**On ***(Boolean)* – Enables or disables the light source.

**Position ***(Point) *– Controls the point position of the Sun. Keep in mind that the Sun is always infinitely far away (it is a directional light source). If a list of input Positions is connected, multiple lights are generated. The number of input positions determines the lights count.

**Target ***(Point)* – The light Position and Target combined determine the targeted light orientation vector.

**Intensity ***(Number) *– Light source intensity. Calculated in Default (Scalar) units.

**Filter Color** *(Color)* – Tints the automatic Sun light color. Note that the light color also depends on the Sun's altitude.

**Ground Color ***(Color)* –  The Ground Albedo color.

**Caustics Radius** *(Number)* –  Defines the area around the V-Ray Sun from where the photons are shot.

**Caustics Subdivs** *(Integer)* –  Determines the number of caustic photons emitted from the light source. Lower values mean more noisy results, but renders faster. Higher values produce smoother results but take more time.

> ✅ Caustics can be rendered only when rendering the scene in Rhino (with Caustics enabled in Asset Editor) from the "Render in Project" component.



## **Output Parameters**

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**Light** *(Generic Data)* – Light output that can be connected to a Render.