The Paveway family of laser guided bombs has progressed from the relatively crude Paveway I and II lines, such as the GBU-10 pictured above, to the GBU-24 family of bombs, more commonly referred to as Paveway III.
One of the challenges to develope was the seeker head, which rides forward of the bomb and follows the laser light. It was developed by using a silicon process to build the seeker portion and by retrofitting a special aircraft probe.
With a range of almost 20 miles, the Paveway III is a low altitude bomb which means a pilot can drop toss it from many miles away. It also has an autopilot which will "fly" the bomb to the designated target, making it almost a fire and forget weapon. -- Photos courtesy of Texas Instruments.