LumiLine^©-LED:  “surface illumination by means of snap domes”

Here you can see some examples of LumiLine©-LED.
This solution has the advantage that it is flat, extremely robust and longlasting, as LED's are used. Despite the snap dome technology, a surface illumination of the keys is possible!  
The very good cost-performance ratio tells its own tale.  
Feel free to inquire!

Lighting off:

Lighting on: