diff --git a/docarray/document/mixins/mesh.py b/docarray/document/mixins/mesh.py
index 2ae34328656..4c9a7fbe51e 100644
--- a/docarray/document/mixins/mesh.py
+++ b/docarray/document/mixins/mesh.py
@@ -1,5 +1,7 @@
 from typing import TYPE_CHECKING
 
+import numpy as np
+
 if TYPE_CHECKING:
     from ...typing import T
 
@@ -31,10 +33,10 @@ def load_uri_to_point_cloud_tensor(
             scene = loader(self.uri, force='scene')
             for geo in scene.geometry.values():
                 geo: trimesh.Trimesh
-                self.chunks.append(Document(tensor=geo.sample(samples)))
+                self.chunks.append(Document(tensor=np.array(geo.sample(samples))))
         else:
             # combine a scene into a single mesh
             mesh = loader(self.uri, force='mesh')
-            self.tensor = mesh.sample(samples)
+            self.tensor = np.array(mesh.sample(samples))
 
         return self
diff --git a/tests/unit/document/test_converters.py b/tests/unit/document/test_converters.py
index e8e5ad2d364..e957ea06e7f 100644
--- a/tests/unit/document/test_converters.py
+++ b/tests/unit/document/test_converters.py
@@ -247,6 +247,7 @@ def test_glb_converters(uri, chunk_num):
     doc = Document(uri=uri)
     doc.load_uri_to_point_cloud_tensor(2000)
     assert doc.tensor.shape == (2000, 3)
+    assert isinstance(doc.tensor, np.ndarray)
 
     doc.load_uri_to_point_cloud_tensor(2000, as_chunks=True)
     assert len(doc.chunks) == chunk_num