Patent ID: 8426778

Claim:
A semiconductor processing apparatus comprising: (a) a process chamber comprising a substrate holder and a window; (b) an ultraviolet (UV) lamp assembly mounted on the process chamber over the window, the UV lamp assembly comprising UV light source and an adjustable reflector; and (c) a controller operable to execute a set of instructions, wherein the adjustable reflector comprises (i) a rotational adjustment mechanism, wherein the rotational adjustment mechanism includes a stepper motor; and, (ii) reflective optics mounted to the rotational adjustment mechanism, wherein the reflective optics mount is configured to rotate about an axis; and the set of instructions comprises (i) receiving an indication of an extent of non-uniformity of a substrate or a substrate batch; (ii) determining an angle of reflection to compensate for the non-uniformity; (iii) moving the rotational adjustment mechanism to the determined angle; and, (iv) radiating the substrate with UV radiation.