Patent ID: 6097034
Filing Date: 2000-08-01
Classification: A61B,G01J,G01N

Abstract:
A radiation source assembly suitable for use in measuring spectral absorption properties of a substance to be analyzed, said radiation source assembly having an axis and comprising:a measuring radiation source providing radiation along the direction of the axis;a reference radiation source providing radiation along the direction of the axis; andan optical diffuser spaced from said radiation sources along the axis and to which radiation from said measuring radiation source and radiation from said reference radiation source are applied, said optical diffuser forming an exiting radiation beam for said assembly from the radiation of said measuring radiation source and the radiation of said reference radiation source, said exiting radiation beam extending along the axis, and in said at least a portion of radiation beam, as seen in a cross-section taken cross-wise to the axis, the configuration of the distribution of the radiation from each of said sources is generally the same so that said at least portion of said radiation beam may be used for measurement purposes.