Patent ID: 9285311
Filing Date: 2016-03-15
CPC Classification: G01N

Claim Text:
1. An optical system for performing scattering and absorbance assays in clinical diagnostics, the optical system comprising: a light source for emitting collimated light parallel to an optical axis in an optical path, a sample holding unit comprising at least one sample holding position, an optical detector for measuring light transmitted through a sample being located in the optical path in the sample holding position, and an adjustable light angle selector comprising at least one of the following: for a scattering assay, said adjustable light angle selector through aperture radius, focal length, distance of the detector with respect to the sample holding position or number of open pixels allows only light transmitted through the sample and diverging from the optical axis with an angle (α) less than about 5 degrees to reach the optical detector, and for an absorbance assay, said adjustable light angle selector through aperture radius, focal length, distance of the detector with respect to the sample holding position or number of open pixels allows light transmitted through the sample and diverging from the optical axis with an angle (α) less than about 60 degrees to reach the same optical detector as for the scattering assay.