An object of the present invention is to improve the quality level discrimination accuracy of the grain G by a grain quality level discrimination device. The device includes an optical unit 3 that emits light to the grain G, receives reflected and/or transmitted light from the grain G by a photosensor, and obtains information for discrimination of the quality level of the grain G from the upper and lower surface side of the grain G, and a quality level discrimination unit 7 that discriminates the quality level of the grain G on the basis of the information. The information on the upper and lower surface sides can be acquired by one optical unit at the same time so that the divergence therebetween due to the displacement or variation of the attitude of the grain G can be avoided. The reference plate for the correction of the information is placed outside of the moving path of the grain G to prevent it from soiling or damaging. Thus the deterioration of information can be avoided. Further, a reference plate especially for the information to be obtained from the side surface of the grain G may be provided for enhancing the accuracy of the side surface information. Thus the quality level discrimination accuracy can be improved further.

A method for measuring optical signal detector performance that includes directing light emitted from an optical signal detector onto a first non-fluorescent surface portion in a first detection zone of the optical signal detector. A first characteristic of light detected by a first sensor of the first optical signal detector is measured while the first non-fluorescent surface portion is in the first detection zone of the optical signal detector. Light emitted from the optical signal detector is directed into a first void in the first detection zone of the optical signal detector. A second characteristic of light detected by the first sensor of the optical signal detector is measured while the first void is in the first detection zone of the optical signal detector. And an operational performance status of the optical signal detector is determined based on at least one of the first characteristic and the second characteristic.

A light avoidance structure (100) for detecting an optical signal, comprising: a base (10), a rotating body (20) pivotally connected to the base (10), and a cover plate (30) arranged facing toward the rotating body (20). The rotating body (20) is provided with a first light shielding member (21); the rotating body (20) is provided with at least one cup hole (22); the cup hole (22) is provided with a detection port (221); the cover plate (30) is provided with a second light shielding member (31); the second light shielding member (31) and the first light shielding member (21) match each other so as to form an annular structure used for shielding light, and a gap (311) is provided at the connection of the second light shielding member (31) and the first light shielding member (21); the detection port (221) is located at the outer side of the first light shielding member (21) and the second light shielding member (31); and the cover plate (30) is provided with at least one hole (32). The light avoidance structure (100) for chemiluminescence measurement may effectively solve the problem of light leakage in a dark room by means of the annular structure used for shielding light provided between the cover plate (30) and the rotating body (20), and is a simple structure and reduces the influence on a device.

An processing apparatus includes a first illumination portion and a first imaging portion. The first illumination portion irradiates ta second inner surface on an opposite side of a second outer surface and a third inner surface on an opposite side of a third outer surface via a first outer surface of the electronic component with irradiation light in a state where the electronic component is disposed on a first inspection position. The first imaging portion captures an image of a first internal corner portion formed by the second inner surface and the third inner surface, based on the first irradiation light emitted from the first outer surface after being specularly reflected on the second inner surface and the third inner surface.

To minimize cross talk in systems and methods for detecting two or more different optical signals emitted from each of a plurality of reaction receptacles, an excitation signal associated with each of the optical signals has a known excitation frequency, and any detected signal having a frequency that is inconsistent with the excitation frequency is discarded. The receptacles are moved relative to optical sensors configured to detect each unique optical signal from an associated receptacle, and to further minimize cross talk, the optical sensors are arranged so that only one reaction receptacle at a time is in a signal detecting position with respect to one of its associated optical sensors, and the optical sensors are grouped by the optical signal they are configured to detect so that a first optical signal is detected from each of the reaction receptacles before a second optical signal is detected from the reaction receptacles.

In order to provide a biological sample analysis apparatus capable of preventing a container storing a sample from being charged and of measuring only a luminescence intensity of light emitted from the sample accurately, a biological sample analysis apparatus for rapid microbiological test analyzes light generated from a biological origin substance contained in a sample, and includes a holder that holds a plurality of containers storing the sample, a photodetector fixed at a predetermined position, a holder drive mechanism that drives the holder and sequentially positions each of the containers held by the holder at a detection position detected by the photodetector, and a neutralizer that neutralizes the containers held by the holder.

A module installation unit is capable of installing a plurality of modules capable of accommodating a plurality of tubes containing a sample. A temperature adjusting unit heats and cools the sample in the tube of each module to the temperature required for nucleic acid amplification. An optical detection unit is used commonly by the plurality of modules installed in the module installation unit and which is capable of detecting the amplified nucleic acid of a sample subjected to nucleic acid amplification of a tube by regulating the temperature via the temperature adjusting unit for each module installed in the module installation unit. A moving unit moves the optical detecting unit and module installation unit relative to each other so as to detect the amplified nucleic acid of the sample in a tube of each of the plurality of modules installed in the module installation unit via the optical detection unit.

Described herein are various embodiments directed to rotor devices, methods, and systems. Embodiments of rotors disclosed herein may be used to characterize one or more analytes of a fluid. A method may include bonding a first layer and a second layer using two-shot injection molding. The first layer coupled to the second layer may collectively define a set of wells. The first layer may be substantially transparent. The second layer may define a channel. The second layer may be substantially absorbent to infrared radiation. A third layer may be bonded to the second layer using infrared radiation. The third layer may define an opening configured to receive a fluid. The third layer may be substantially transparent. The channel may establish a fluid communication path between the opening and the set of wells.

An object of the present invention is to suppress time and effort into generating a calibration curve while ensuring accuracy of the calibration curve in an analysis step of generating the calibration curve by using two or more standard solutions (two or more concentrations). A calibration curve generation method according to the present invention includes acquiring time course data by irradiating a mixed reaction liquid obtained by mixing one standard solution containing a component to be measured having a concentration other than a zero concentration and a reagent reacting with the component to be measured with light and measuring a turbidity change over time of the mixed reaction liquid, extracting pieces of light amount data in a plurality of different times from a fitting line obtained by complementing discrete portions of the time course data, and generating the calibration curve indicating a relationship between the plurality of pieces of light amount data and a plurality of concentrations by converting the plurality of different times into the plurality of concentrations of the component to be measured (FIG. 1).

A method for measuring optical signal detector performance that includes directing light emitted from an optical signal detector onto a first non-fluorescent surface portion in a first detection zone of the optical signal detector. A first characteristic of light detected by a first sensor of the first optical signal detector is measured while the first non-fluorescent surface portion is in the first detection zone of the optical signal detector. Light emitted from the optical signal detector is directed into a first void in the first detection zone of the optical signal detector. A second characteristic of light detected by the first sensor of the optical signal detector is measured while the first void is in the first detection zone of the optical signal detector. And an operational performance status of the optical signal detector is determined based on at least one of the first characteristic and the second characteristic.