Patent ID: 7417238

Claim:
A device for measuring fluorescence with at least two separate measurement channels excited by light comprising a single measuring head, the single measuring head comprising: a) an upper measuring head region having a face designed to have at least one fluorescing material applied thereto, or be in contact with at least one fluorescing material, or with a support having at least one fluorescing material applied thereto; b) at least one light source which emits light of at least one wavelength which excites at least one fluorescence, and thus, fluorescent light, in the at least one layer; c) a plurality of optical conductors comprising: at least one first and one second optical conductor directing the light from the at least one light source directly in to, or in the direction of, the fluorescing material; the same optical conductors receiving the fluorescent light generated in the fluorescent layer onto the at least one detector; or i) at least one first optical conductor which directs the light from the at least one light source directly into or in the direction of the fluorescing material; and ii) at least one detector for measuring the intensity of the fluorescent light; d) at least one second optical conductor receiving the fluorescent light generated in the fluorescing layer, the at least one second optical conductor directing the fluorescent light onto the at least one detector; and e) at least one detector for measuring the intensity of the fluorescent light generated in the fluorescing layer f) wherein the at least one first optical conductor is arranged to achieve measured values of the fluorescent light from the at least two channels in a single measurement head.