Patent ID: 7449691

Claim:
A detecting apparatus for detecting a defect on a surface of a sample, comprising: a radiation source for emitting an UV-ray or a Laser beam toward the sample held in a vacuum environment; an electron gun for emitting an irradiation beam toward the sample so that secondary electrons are emanated from the sample; an EB-CCD sensor for detecting the secondary electrons emanated from the sample, the EB-CCD sensor permitting the secondary electrons to enter the sensor surface directly to form a two dimensional image, said EB-CCD sensor being disposed in the vacuum environment; an electron-optical system for guiding the secondary electrons to the EB-CCD sensor; and a stage for mounting and moving the sample; wherein a processing device processes the image to detect a defect on the surface of the sample; a flange for separating the vacuum environment and the atmosphere, said flange including a feed through which has conductive pins connected directly to a camera in the atmosphere, a surface of the camera contacting with an outer surface of the flange around the feed through; a sensor package for integrating the EB-CCD sensor and signal transmission pins, the sensor package being installed in the vacuum environment; a connecting socket for connecting the conductive pins of the feed through and the signal transmission pins of the sensor package, said connecting socket including an elastic member for reducing a connecting pressure applied to said transmission pins.