| 摘要 |
<P>PROBLEM TO BE SOLVED: To pass more light than a conventional line imaging system by cutting beyond a knife-edge aperture 50. <P>SOLUTION: A line imaging system includes a laser 20, first and second cylindrical optical systems CL1, CL2 that include a first spatial filter SF1 therebetween, the knife-edge aperture 50, a cylindrical relay system, and a cylindrical condenser lens CFL. The first spatial filter SF1 is configured to cut a line focus LF1 in a center lobe, and generates a first light beam. The second cylindrical lens system CL2 is arranged in a remote field, and configured to perform spatial filter processing for passing a center intensity lobe of the first light beam and cutting an intensity lobe outside a range. A light beam having been subjected to the filter processing eventually twice has a relatively tip-flat intensity distribution with respect to a length of a line image LI. <P>COPYRIGHT: (C)2012,JPO&INPIT |
