| 摘要 |
<p>PURPOSE:To preclude an error dispensation quantity due to air bubble generation and to enable stable inspection by detecting transmitted light when light emitted by a light emitting body is emitted in a beam shape and made to cross a container containing a sample and deciding whether or not there is an air bubble. CONSTITUTION:The sample 12 is put in a chip (container) 10 which transmits near infrared light and moved by a chip moving means 36 at a constant speed as shown by an arrow. The near infrared light from an LED 14 is a beam 20 which has constant width and constant thickness so as to cross the chip 10 through optical systems 16 and 18. The beam 20 which is transmitted through the chip 10 passes through an optical fiber 22 which passes only light having wavelength in the near infrared range and reaches a photodetector 24. A differentiation circuit 26 and a signal processing circuit 28 inputs the detection signal of a detector 24 to find staircase variation in the quantity of the light transmitted through the chip 10, and the result is used to decide whether or not there is an air bubble. Consequently, when the air bubble is detected, analysis is quitted or dispensation is performed again to perform stable analysis and inspection.</p> |
