摘要:
An apparatus and a method for determining the focus of an optical system on a substrate are disclosed. A light source emits an auxiliary light beam into an auxiliary beam path, wherein the auxiliary light beam, after splitting, is offset in relation to an optical axis of a measuring objective. At least one optical switch is provided in the auxiliary beam path for switching the path of the auxiliary beam path from one side offset from the optical axis to the other side offset from the optical axis of the measuring objective.
摘要:
A method for measuring structures (3) on a substrate (2) with a coordinate measuring machine (1) is disclosed. A predefined measuring method is used for measuring at least one structure (3) on the substrate (2), wherein the measuring includes the position and/or the width of the structure (3). The predefined measuring method consists of a plurality of processes linked with the coordinate system (1a) of the coordinate measuring machine (2). The measuring method for a substrate is defined by a first orientation with respect to the coordinate system of the coordinate measuring machine (1). The predefined measuring method is applied to a second orientation of the substrate (2).
摘要:
A device for recording a number of images of disk-shaped objects (6), which is provided with at least two lighting device (8), which are designed so that the light exiting the lighting devices (8) is spectrally variable. A single recording device (12) is arranged in relation to the disk-shaped object so that the recording device (12) simultaneously records a number of spectrally variable images of the disk-shaped object (6).
摘要:
A method for optical inspection, detection and visualization of defects (9) on wafers (2) is disclosed, wherein at least one camera (5) acquires images of at least one portion (11) of the wafer (2) relative to a reference point (12) of the wafer (2), and the Cartesian coordinates of the image data associated with the at least one portion (11) of the wafer (2) are transformed into polar coordinates.
摘要:
A method for determining the position of an edge bead removal line of a disk-like object having an edge area and an alignment mark on the edge area is disclosed, wherein the edge area including the edge bead removal line is imaged on a line-by-line basis, an intensity profile I of the imaged edge area including the edge bead removal line is obtained with a camera on a line-by-line basis, and the edge area and the alignment mark are detected, wherein the local intensity maxima I′max of the intensity profile I are plotted as points in a diagram, segment sets are formed in the diagram, the segment sets are fitted in ellipses, and a quality criterion qges is determined for each ellipse.
摘要:
A method for determining the centrality of masks is disclosed. The mask is positioned in a coordinate measuring device on a measurement table displaceable in a direction perpendicular to the optical axis of an imaging measurement system in an interferometrically measurable way. The position of a mask coordinate system with respect to the measuring device coordinate system is determined based on at lest two structures on the mask. The relative distance from one of the at least first and second outer edges to the at least two structures is determined. The coordinate measuring machine determines the actual coordinates of the at least two structures with respect to the respective outer edges, which must not exceed a predetermined deviation from a desired value.
摘要:
A method for measuring structures (3) on a substrate (2) with a coordinate measuring machine (1) is disclosed. A predefined measuring method is used for measuring at least one structure (3) on the substrate (2), wherein the measuring includes the position and/or the width of the structure (3). The predefined measuring method consists of a plurality of processes linked with the coordinate system (1a) of the coordinate measuring machine (2). The measuring method for a substrate is defined by a first orientation with respect to the coordinate system of the coordinate measuring machine (1). The predefined measuring method is applied to a second orientation of the substrate (2).
摘要:
A method for determining the ideal focus position on different substrates is disclosed. A focus criterion is determined with which the best reproducibility may be achieved. An offset permits the user to set the optimal operating point of the coordinate measuring machine for a reproducible measurement of dimensions of structures on a substrate.
摘要:
A method and a coordinate measuring machine (1) are provided, wherein the non-linearities of an interferometer (24) can be corrected. A measuring stage (20) traversable in a plane (25a) is provided for measurement. The substrate (2) is placed in a measuring stage (20); wherein the position of the measuring stage (20) along each of the motion axes is determined by at least one interferometer (24) in each case. A computer (16) is provided for compensating the non-linearity inherent in each of the interferometers (24), wherein the position of the measuring stage (20) to be determined by the interferometers (24) is arranged along a trajectory (52, 60, 67) of the measuring stage (20), which is composed at least partially of components of the axes.
摘要:
An apparatus for inspecting a disk-like object comprising at least one first module for inspecting a surface of the disk-like object and at least one second module insertable in the apparatus. The at least one second module is arranged to inspect a different element of the disk-like object than the surface of the disk-like object.