Wide angle lens for SEN0158 - Gravity: IR Positioning Camera For Arduino

I bought the SEN0158 for my application but I found that the Fiels of View of the camera (Horizontal detecting angle: 33 degrees, Vertical detecting angel: 23 degrees) are a little narrow for my application. I would like to fix a wide angle lens to increase the Fields of Views to around 90 degrees or more. 
 

What I did was I bought a M12-mount, 2.8mm CCTV camera lens (whose field of view is 105 degrees) to put on this camera. I remove the IR filter out of the camera case to expose the camera module inside with it tiny lens. Then I put the CCTV lens on top of the camera module, making sure that their axes align.
 

But it doesn't work. And it not about the lack of the IR filter; without the filter, the camera still work well.

Does anyone know why it doesn't work, or are there commercial wide angle lenses for this camera?