Patent ID: 7941913

Claim:
A component placement unit for placing a component on a substrate, which component placement unit comprises: at least one nozzle which is rotatable about a central axis and configured to pick up and place the component on the substrate; and an imaging device including: at least one sensor for determining an orientation of the component relative to the nozzle, and at least one optical element disposed in a light path between said sensor and said nozzle, wherein a first part of a first focus plane of the optical element extends parallel to the central axis of the nozzle and is positioned so that the central axis of the nozzle lies in the first part of the first focus plane, the first part of the first focus plane extends transversely to the substrate, wherein a second part of the first focus plane extends parallel to the substrate and is positioned so that the substrate lies in the second part of the first focus plane, the substrate extends transversely to the central axis, wherein a second focus plane of the optical element substantially coincides with the sensor so that the sensor lies in the second focus plane, and wherein an image produced by using the sensor is a contour image of the component, wherein an image of at least a part of the substrate can be produced by using the sensor as well.