Couldnt find this question asked, hopefully this is a first time and not a multiple 
I like to turn my screen off sometimes to preserver the battery life. But it is annoying that it asks me for the unlock pattern every time I do this. Is there any way, such as an app, to achieve this?
I want to have a timeout of ten minutes so that I can turn off the screen and as long as I turn it back on within the time period, it doesnt require an unlock?
Actually, this leads to a 2nd question - is it possible to make the timing of the screen timeout more customizable? 15 secs/30secs/1min/2min/10min/30min is not a lot of options.

I like to turn my screen off sometimes to preserver the battery life. But it is annoying that it asks me for the unlock pattern every time I do this. Is there any way, such as an app, to achieve this?
I want to have a timeout of ten minutes so that I can turn off the screen and as long as I turn it back on within the time period, it doesnt require an unlock?
Actually, this leads to a 2nd question - is it possible to make the timing of the screen timeout more customizable? 15 secs/30secs/1min/2min/10min/30min is not a lot of options.