Patent ID: 9255883
Filing Date: 2016-02-09
CPC Classification: G01N,G02B

Claim Text:
1. An illumination system, for use with an analyte solution and a reagent solution including a fluorescent substance, the illumination system comprising: a metal thin film; a reaction layer formed on one side of the metal thin film to which the analyte solution and the reagent solution including the fluorescence substance are sent; a light source structured to radiate an exciting light on a side of the metal thin film opposite to the reaction layer so as to enhance an electric field on the metal thin film, whereby the fluorescence substance in the reaction layer is excited, and the radiation of the exciting light on the metal thin film defines a radiation area on the metal thin film; a detection device structured to detect an enhanced fluorescent light from the fluorescence substance in the reaction layer; and a beam geometry changing device structured to vary a beam geometry of the exciting light in accordance with operation of the illumination system; and a control section structured to control the beam geometry changing device during operation of the illumination system; wherein the beam geometry changing device comprises one of: wherein the control section is configured to control the beam geometry changing device to perform one of: