I looked at the license for developing hardware modules for the OSVR and it doesn't look very open source to me. (You get it when you go to osvr.com
> Hardware then click "download" at the bottom of the page. First fill in a form and on the next page you get the license.)
First of all, Razer is explicitly mentioned as the company behind the project.
If you make a module for OSVR you must grant a royalty free license to that and any IPR to Razer and any company Razer wants. (Basically they can sell your stuff.)
If you make a module for OSVR you must indemnify Razer and any company Razer wants for any patent, trade dress or other legal problems your design may cause. So if you make a cool project, Razer uses sells that and then get sued by Apple you are on the hook.
Someone else mentioned that you can't sell your own creations made for the OSVR, but I don't think that's correct. The way I interpret the license you can't sell or give the OSVR IPR to anyone else (but they are free to get it themselves of course).
Needless to say, there is no way in hell I'd accept a licence like this.