发明授权
- 专利标题: Condenser for illuminating a ringfield camera with synchrotron emission light
- 专利标题(中): 用同步辐射光照射环形相机的冷凝器
-
申请号: US469590申请日: 1995-06-06
-
公开(公告)号: US5512759A公开(公告)日: 1996-04-30
- 发明人: William C. Sweatt
- 申请人: William C. Sweatt
- 专利权人: Sweatt; William C.
- 当前专利权人: Sweatt; William C.
- 主分类号: G03F7/20
- IPC分类号: G03F7/20 ; G21K1/06
摘要:
The present invention relates generally to the field of condensers for collecting light from a synchrotron radiation source and directing the light into a ringfield of a lithography camera. The present invention discloses a condenser comprising collecting, processing, and imaging optics. The collecting optics are comprised of concave and convex spherical mirrors that collect the light beams. The processing optics, which receive the light beams, are comprised of flat mirrors that converge and direct the light beams into a real entrance pupil of the camera in a symmetrical pattern. In the real entrance pupil are located flat mirrors, common to the beams emitted from the preceding mirrors, for generating substantially parallel light beams and for directing the beams toward the ringfield of a camera. Finally, the imaging optics are comprised of a spherical mirror, also common to the beams emitted from the preceding mirrors, images the real entrance pupil through the resistive mask and into the virtual entrance pupil of the camera. Thus, the condenser is comprised of a plurality of beams with four mirrors corresponding to a single beam plus two common mirrors.
公开/授权文献
- US5033388A Projectile base for carrier projectiles 公开/授权日:1991-07-23
信息查询
IPC分类: