| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical delay instrument having a large inside optical path length. <P>SOLUTION: The optical delay instrument of light is equipped with at least one pentagonal prism structure 50. The pentagonal prism structure 50 has at least one incident face 51a on which light is made incident, at least one emitting face 51b from which the light is emitted, and at least two reflection faces 52a and 52b which reflect the light made incident on the incident face 51a to guide the light to the emitting face 51b. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
