Patent ID: 8853656
Filing Date: 2014-10-07
Classification: H05G

Abstract:
1. An extreme ultraviolet (EUV) light source device for irradiating a droplet at an emission point with externally supplied laser light to turn the droplet into plasma from which the EUV light is emitted, the EUV light source device comprising: a droplet generation device configured to supply droplets; a charge supply device configured to selectively charge the droplets to generate a charged droplet and an uncharged droplet; a deflection device configured to deflect a trajectory of the charged droplet only toward the emission point; and a trajectory correction device including an electrostatic lens for correcting the trajectory of the deflected droplet so that the deflected droplet reaches the emission point; wherein the droplet generation device is inclined with respect to a trajectory toward the emission point, so that the trajectories of droplets leaving the droplet generation device are inclined with respect to a trajectory toward the emission point.