| 摘要 |
An optical method for measuring a liquid sample ( 24 ) placed in a sample well ( 21 ), in which method the liquid sample ( 24 ) is exposed to excitation light ( 32 ) obtained from an excitation light source ( 30 ) from below the sample well through a transparent bottom ( 23 ). The excitation light is directed towards the sample well preferably as a conical light beam, which in the area of the sample well has a width mainly corresponding to the width of the sample well. The distance of the excitation light source from the bottom of the sample well is adjusted so that the excitation light beam is the size of the transparent bottom of the sample well. In an optical measuring device ( 10 ), an emission light shutter ( 50 ) is provided between the sample well and an emission light detector ( 12 ), and the shutter plate ( 51 ) has a glossy surface on the side facing towards the sample well. The measuring device may comprise a plurality of detectors placed side by side for simultaneous measurement of a plurality of sample wells. The device may also comprise a plurality of excitation light lasers placed side by side.
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