btw this are just white leds, and the logitech c170 camera software has an option to reduce compensation or something like that that makes the whole cmaera black but only catchs the white leds :)
so i use it even on day time and with windows in my back. if theres a very strong light behind me, i even reduce the bright and increase contrast and somestuff that it got in the software to fix it.
the white leds doesnt hit my screen couse its a "cap" model, so it goes attached in the top of my headset.