Patent ID: 8841579

Claim:
A system, comprising: a base; an object mount configured to hold an object for inspection and/or processing, the object mount having a first position relative to the base, and the object mount having a second position relative to the base; an aperture plate having an aperture; a laser device configured to scan a laser beam across a laser beam scan region, the laser device being supported by the base; a transport device configured to move the object mount between the first and second positions; and a light detector fixed relative to the base, wherein: when the object mount is in the first position and the object mount is holding the object, the object and the aperture are positioned within the laser beam scan region; the system has a light guide between the laser device and the light detector; the light guide has an inlet port and an outlet port; the inlet port of the light guide is defined by the aperture; and the light detector is configured so that, during use of the system, the light detector detects light emerging from the output port of the light guide.