Patent ID: 7123398
Filing Date: 2006-10-17
Classification: G01J,G01N

Abstract:
1. A device for delimiting a fixed field on the surface of an optical element or a sample impinged with light from a fixed light source, the device having a slit diaphragm, including a slit height and a slit width, which includes first and second linearly movable slides, positioned parallel to one another on two separate parallel lines, which are movable at least partially symmetrically to one another in relation to a fixed optical axis that is defined by the light source, the slit diaphragm, and the field on the surface of the optical element or the sample, each of the two slides including at least one optical opening, which—for continuous adjustment of at least the slit height or the slit width—are positioned at least partially on the optical opening of the neighboring slide in the region of the optical axis, wherein the device includes a motor drive with a motor having an axis of rotation for moving the two slides in a movement direction, wherein the axis of rotation of the motor is positioned perpendicularly to the movement direction, wherein the motor drive for moving the two slides includes two movement journals positioned on a rotating disk and pivotable symmetrically around the axis of rotation of the rotating disk, wherein each of the movement journals engages a first mechanical opening provided on each slide, and each slide being cut from a piece of suitable steel sheet.