| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an efficient and small-sized beam detector of a small required area which can be easily manufactured at a low cost for sensing a beam present in a visible spectrum region. <P>SOLUTION: A signal formed in a first sensing element is taken out separately from a signal formed in a second sensing element, the first sensing element is partially permeative in a visible beam, and the visible beam which has permeated the first sensing element forms a signal in the second sensing element. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
