| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a vertical-directional concentration distribution is generated in a container and that respective lights are transmitted through portions that differ in concentrations to have an adverse effect on measuring precision, when a measured object is a liquid. Ž<P>SOLUTION: At least two kinds of semiconductor light sources (2, 4) are arranged inside the same package (5) to be controlled within a detector (9) after the output optical axes thereof are crossed, using two kinds of semiconductor light sources different in output wavelengths. As a result, a plurality of lights are transmitted through substantially the same concentration of portions to be detected under a condition hardly affected by a sample concentration in the container. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
