Webcam as magnifier

My father has a very poor sight and he needs a magnifier if he wants to read anything. He needs really big zoom, up to 100 times. He wanted to buy a special reader, such as this. But, unfortunately, he can't afford it, since it costs more than 2000 euros. I was thinking to try to make something myself, probably with a webcam. Do you think it would be possible? Is there any webcam that can zoom that well? Maybe a normal (HD) camera? He has a huge TV, so I was thinking to make a holder for the cam and connect it to the TV. He can then sit on the couch and read.

Any thoughts? I'm looking for the best 开发者_StackOverflow社区and cheaper as possible solution. Any help would be great.

You would need to retrofit the webcam with a closeup lens. Make sure you get a high resolution webcam, 720p or better.

I'm less sure about the software, but surely there is something out there that will let you use a webcam as a simple viewer.

Of note: I am posting this from my ipad. With Goodreader software, you can pretty much zoom as large as you want, and the iPad is much less expensive than the device you described.