Patent ID: 8248592

Claim:
An inspection apparatus for detecting a defect of a sample, the apparatus comprising: an illumination optical system for irradiating a surface of the sample with illumination light; a first imaging system for forming a first image, the first imaging system including a first objective optical element, and a first sensor for detecting the first image; a second imaging system for forming a second image, the second imaging system including a second objective optical element, and a second sensor for detecting the second image; and an adjusting unit which: changes at least one of a first position of the first sensor and a second position of the second sensor, adjusts a first field of vision of the first imaging system to substantially coincide with a second field of vision of the second imaging system, or adjusts the second field of vision of the second imaging system to substantially coincide with the first field of vision of the first imaging system, wherein: a first position of the first objective optical element relative to the sample is spatially different from a second position of the second optical element relative to the sample, the first imaging system forms the first image by using light passed through the first objective optical element, the second imaging system forms the second image by using light passed through the second objective optical element.