| 摘要 |
A detector for detecting an optical signal from a sample that may be indicative of the presence, amount, or state of one or more analytes in the sample, the detector comprising: one or more excitation channels, each disposed within one of the conduits of the housing and adapted to direct an excitation signal of a prescribed excitation wavelength or range of excitation wavelengths toward the sample, and each excitation channel comprising: a light emitting element adapted to emit excitation light; and excitation optical elements defining an excitation optical path having an excitation optic axis, the excitation optical elements comprising a lens and an excitation filter constructed and arranged to transmit only light emitted by the light emitting element having the prescribed excitation wavelength or range of excitation wavelengths toward the sample, one or more emissions channels, each disposed within one of the conduits of the housing and adapted to receive an emission signal from the sample and detect an emission signal having a prescribed emission wavelength or range of emission wavelengths, and each emission channel comprising: emission optical elements defining an emission optical path having an emission optic axis, the emission optical elements comprising a lens and an emission filter constructed and arranged to transmit only light emitted by the sample having the prescribed emission wavelength or range of emission wavelengths; and a light-detecting element adapted to detect light transmitted by the emission optical elements and to convert the detected light to an electronic signal indicative of at least one of the presence and strength of the detected light, a housing, wherein each of the excitation and emission channels is disposed within a different conduit defined within the housing; wherein the excitation and emission optic axes are parallel to one another throughout their extents; and an optic lens constructed and arranged with respect to the excitation and emission channels to (1) direct excitation light transmitted by each excitation channel and impinging on a different portion of the optic lens at a prescribed location and (2) receive emission signals emitted by the sample at the prescribed location and to direct at least a portion of the received emission signals into each emission channel. |
