| 摘要 |
<p>A reactant (12) which is formed integrally with a light source (11, or 21), wherein the optical property, or the resistance vary due to a reaction with an object to be detected. A light detector (13) outputs variation in the optical property of the reactant (12) as a signal. A light detector control unit (52) electrically detects the signal of the light detector (13). A calculation unit (53) calculates on the basis of a detection output of the light detector control unit (52), and displays in a display unit (54) the presence or absence, and the concentration, and the like, of the object to be sensed.</p> |
