diff --git a/examples/printScene.php b/examples/printScene.php
index 84a7889..542b251 100644
--- a/examples/printScene.php
+++ b/examples/printScene.php
@@ -71,12 +71,16 @@ $obj->setMaterial($colorGlass);     //将玻璃材质赋值到模型的材质属
 $scene->registerObjects($obj);   //将模型添加到场景中
 
 
-
+//添加一个世界对象
 $default = new world\WorldDefault();
 $default->setDefaultVolume($ClearVol);
 
 $scene->registerWorld($default);
 
+//添加一个相机
+$camera = new camera\Perspective();
+$scene->registerCamera($camera);
+
 echo $scene;
 
 
diff --git a/src/scene/Scene.php b/src/scene/Scene.php
index 0e0d520..9f8bf92 100644
--- a/src/scene/Scene.php
+++ b/src/scene/Scene.php
@@ -116,13 +116,19 @@ class Scene extends BaseCfg
      */
     public function registerCamera(&$camera)
     {
-        $id = $camera->type.'_'.sprintf("%014d",$camera->id);
-        $camera->registerId = $id;
-        $this->cameras[$id] = $camera;
+        $this->cameras = [];
+        foreach( get_object_vars($camera) as $key => $value )
+        {
+            if($value != null)
+            {   
+                $key = implode(".", array_map('strtolower', StringHelper::camelStrToArray($key)));
+                $this->cameras[$key] = $value;
+            }
+        }
     }
 
     /**
-     * @param object $camera 接收一个相机类对象，为其颁发一个注册信息，并将其存到Scene
+     * @param object $camera 接收一个World类对象，为其颁发一个注册信息，并将其存到Scene
      */
     public function registerWorld(&$world)
     {
diff --git a/src/scene/camera/Perspective.php b/src/scene/camera/Perspective.php
index f619920..42e9dab 100644
--- a/src/scene/camera/Perspective.php
+++ b/src/scene/camera/Perspective.php
@@ -3,7 +3,7 @@
 namespace Blobt\Luxcore\scene\camera;
 use Blobt\Luxcore\core\Base;
 
-class Perspective extends Camerabase
+class Perspective extends CameraBase
 {
 
     /**
diff --git a/src/scene/materials/MaterialsBase.php b/src/scene/materials/MaterialsBase.php
index c74466c..6dafa4c 100644
--- a/src/scene/materials/MaterialsBase.php
+++ b/src/scene/materials/MaterialsBase.php
@@ -2,7 +2,7 @@
 
 namespace Blobt\Luxcore\scene\materials;
 use Blobt\Luxcore\scene\BaseCfg;
-use Blobt\Luxcore\scene\ligths\Visibility;
+use Blobt\Luxcore\scene\lights\Visibility;
 use Blobt\Luxcore\scene\lights\Emission;
 
 
diff --git a/src/scene/world/WorldDefault.php b/src/scene/world/WorldDefault.php
index 77343ea..caf24cc 100644
--- a/src/scene/world/WorldDefault.php
+++ b/src/scene/world/WorldDefault.php
@@ -6,7 +6,7 @@ class WorldDefault
 {   
 
     /**
-     * @var object 一个体积对象
+     * @var object 一个体积对象（体积效果数组的某个键名）
      */
     public $volumeDefault;