Cognex DS900 Series, Reference Information

Page: 7 / 42

Cognex 3D Displacement Sensors
Cognex 3D displacement sensors combine GigE Vision and laser-stripe illumination to generate information about
three-dimensional objects that cannot easily be generated by cameras that acquire two-dimensional images. The sensor
offers highly accurate physical object measurements by analyzing the shape of the laser stripe as it appears to the
camera (which is positioned at an angle to the laser).
The image of the laser stripe represents a cross-section of the object under inspection. Your application might use this
cross-section data, or you can use a 3D displacement sensor to acquire a series of images while the object moves past
and then combine the height data of each image to generate a synthetic 2D image containing height profile information
in real-world coordinates.
7
Cognex 3D Displacement Sensors