Interesting question. What the patent holder is protected from is for others to
"make, use, sell or offer for sale" the patented device. It is possible that your scavenging the camera from a Wii controller could be construed as "use," but that seems unlikely. And anyway, as a purchaser of the Wii controller, you can use it however you wish - even resell it - without infringing Sony's presumed patent.
But my guess is that you don't intend to purchase a Wii controller, pull out the camera, throw the rest away, then make your new device and offer it for sale. Seems like a pretty high overhead method of manufacture.
If what you want to do is to purchase a camera like the camera in the Wii, then use the camera to make something new, you are not likely to step on any toes unless the camera is somehow restricted to only certain uses. I am not sure how the manufacturer could do that. As a bona fide purchaser, you will have the right to use the camera however you like - even if the camera itself is separately patented. In purchasing the camera, you have already paid the patent holder for his intellectual property.
And that last qualification brings up a another. The device you make from the camera may infringe either the Wii controller patents or some other patented device (whether patented by Nintendo or someone else). So you still have to consider that prospect.
And just to be clear, if you intend to manufacture your own version of the camera instead of purchasing the camera component for your invention, then you need to be aware of anyone who may have patented the camera and arrange a license with them. But that would not necessarily be Nintendo.