Today I tried to use the camera to search for the infrared beam. And I took a video.
In the video, we can see the whole halo. But if you check something in the halo, you will find there is only something like the fiber.
I attach the video as following.
https://drive.google.com/open?id=18PApeToBRHC-tDisKg--beNVbhRKi0-E