There's a great dissection of the Kinect bar over at IFixit:|
Step 10 Go check it out if you're a hardware nerd. Seriously. They did a GREAT job taking this apart.
We've finally found the Kinect's eyes.
Two cameras and an IR projector.
Left: (IR CMOS) Microsoft / X853750001 / VCA379C7130
Center: (Color CMOS) VNA38209015
Right: (IR Projector) OG12 / 0956 / D306 / JG05A
This picture is of the device upside down, so these labels are swapped from what you would see looking at the Kinect.
These are not tiny, cell-phone cameras? they're closer to the camera you might find in a webcam, with large lenses and autofocus.
We can't independently confirm the resolution of the cameras yet, but Microsoft claims that the infrared cam is 320x240 and the RGB cam is 640x480