Version: 2017.3
public float fieldOfView ;

Description

The field of view of the projection in degrees.

This is the vertical field of view; horizontal FOV varies depending on the aspectRatio. Field of view is ignored when projector is orthographic (see orthographic). See Also: projector component.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Start() { Projector proj = GetComponent<Projector>(); proj.fieldOfView = 80.0F; } }