Can you damage the proximity sensor if you keep it always on? If you keep the proximity sensor always on (like for applications that turn on the screen when you tap the sensor a few times) is there a risk to damage it?

I'm assuming that the sensor works only in certain situations (e.g. phone rings and sensor is activated to see if phone is in pocket, during a call to detect proximity to the head etc) so I'm wondering if it's OK to keep the sensor on all the time.
The sensor is always on, so there's no higher risk of damage if an app uses it.