| 摘要 |
<p>Ameasuring apparatus comprising a measuring chip (10, 90), an optical incidence system (22), a photodiode array (23), a differentiation part, and a computation part (28). The differentiation part differentiates an optical detection signal output from each light-receiving element, in a direction where light-receiving elements (23a, 23b, 23c ...) are juxtaposed, at intervals of outputs of two adjacent light-receiving elements. The computation part (28) specifies a reference light-receiving element, then judges whether or not values of the optical detection signals of a first predetermined number of light-receiving elements increase monotonously in directions going to both sides, and computes a position of a dark line on the basis of a value obtained by differentiating the outputs of a second predetermined number of light-receiving elements sandwiching the reference light-receiving element when it is judged that the values of the optical detection signals increase monotonously, in the above-described direction. <IMAGE></p> |
