Patent ID: 9706632
Date: 2017-07-11
CPC Classifications: G02B,G03F,G21K,H05G

Claim:
1. An extreme ultraviolet (EUV) light source, comprising: a spray nozzle array having a plurality of spray nozzles configured to spray a plurality of rows of droplets to an irradiating position; a laser source configured to generate a first laser beam and a second laser beam and cause the first laser beam and the second laser beam to alternately bombard the rows of droplets to generate EUV light; a focusing mirror having at least two first sub-focusing mirrors and at least two second sub-focusing mirrors; a first driving device having at least two first sub-driving devices and at least two second sub-driving device, each of first driving devices driving one of the first sub-focusing mirrors and each of the second sub-driving devices driving one of the second sub-focusing mirrors; and a control unit configured to synchronously control the spray nozzle array, the laser source and the focusing mirror.