Exploded bulb-now what?

I had a headlight bulb (right side) explode in the headlamp. Now, the headlamp itself is in decent shape (no cracks or other related damage), but now I have this "coating" inside the headlamp that really dims the light due to the lack of reflective properties.

Does anyone have something like an exploded view so I can remove the headlamp and wash out the inside? Once I do get it removed, how should I clean out the inside?

Thanks!