发明名称 Measurement method and measurement apparatus that measure a surface figure of an aspheric surface based on an interference pattern
摘要 The present invention provides a measurement apparatus that illuminates a surface to be tested having an aspheric surface using light beams that form spherical waves to measure a figure of the surface to be tested, including a detection unit configured to detect interference patterns between light beams from the surface to be tested and light beams from a reference surface, and a controller configured to control processing for obtaining a figure of the surface to be tested based on the interference patterns detected by the detection unit.
申请公布号 US8314937(B2) 申请公布日期 2012.11.20
申请号 US20100685409 申请日期 2010.01.11
申请人 NAKAUCHI AKIHIRO;CANON KABUSHIKI KAISHA 发明人 NAKAUCHI AKIHIRO
分类号 G01B11/02 主分类号 G01B11/02
代理机构 代理人
主权项
地址