| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a small-sized multiwavelength fluorescence measuring device capable of identifying an object in a wide range with high accuracy. <P>SOLUTION: When a floating object 200 on a sea surface 100 is exposed to the laser beam 12, a substance constituting a surface of the floating object 200 emits both reflected light 13 resulting from reflection of the laser beam 12 on the surface of the floating object 200, and fluorescence 14. Photomultiplier tubes 21a to 21c respectively receive the fluorescence 14 through filters 22a to 22d and light-receiving optical systems 23a to 23d, and emit it as an electric signal. For the four filters 22a to 22d, a center of a band is set at 400 nm, 450 nm, 500 nm and 550 nm, respectively, and a broadband filter with the half bandwidth of 40 nm or more is used. <P>COPYRIGHT: (C)2012,JPO&INPIT |
