Patent ID: 8520200

Claim:
An inspection system, comprising: a sensor for generating detection signals in response to light from an inspected object; the inspected object is a semiconductor wafer or a printer circuit board; a processor for processing the detection signals; and an illumination module that comprises: a LED driver; a group of light emitting diodes (LEDs) that comprises at least one LED; the group of LEDs is coupled to the LED driver; illumination optics; wherein the LED driver is arranged to activate the group of LEDs by driving a high current short duration driving signal via the strip cable; and wherein the group of LEDs emits at least one light pulse in response to the high current short duration driving signal; wherein the illumination optics direct at least one pulse of light onto the inspected object; wherein the illumination module further comprises a collimator, a filter, a homogenizer and a concentrator; wherein the group of LEDs is arranged to illuminate the collimator by light pulses; wherein the collimator collimates the light pulses to provide collimated light pulses; wherein the filter is arranged to spectrally filter the collimated light pulses to provide filtered light pulses; wherein the homogenizer is arranged to increase an illumination homogeneity of the filtered light pulses to provide homogenized light pulses; wherein the concentrator is arranged to concentrate the homogenized light pulses onto a light guide.