| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce stress double refraction quantity and the anisotropy of stress double refraction in an optical system having crystalline optical members. <P>SOLUTION: A plurality of optical members each of which consists of single crystal whose crystal structure belongs to a point group O, Oh or Td and has axially symmetrical stress distribution having a prescribed crystal axis direction as a symmetrical axis are arranged so as to be relatively rotated around the symmetrical axis by prescribed angles so that the symmetrical axes of the stress distribution coincide with each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
