Patent ID: 6639224
Filing Date: 2003-10-28
Classification: H01J

Abstract:
A specimen-carrier accessory device connectable to a specimen-carrier table of noneucentric type for the acquisition, by means of a scanning electron microscope, of images taken in an angularly offset manner for stereoscopic examination of a specimen;the specimen-carrier table comprising a support member which is translatable along a first, vertical, axis as well as along a second and a third horizontal axis, of which one is parallel and the other orthogonal to the interocular direction of the observer, and is rotatable about its own axis as well as about the second axis; the accessory device comprising a support structure distinct and separate with respect to said specimen-carrier table, said support structure being comprised of metal material having a connection portion for detachably connecting the support structure to the movable member of the specimen-carrier table, and a support portion having a support surface which, when the structure is coupled to the movable member of the table, extends in a plane parallel to the axis of rotation in such a way that, after rotation of the movable member of the table through 90Â° about the second axis, a subsequent rotation of the movable member about its own axis is able to cause the surface to turn about the third axis.