Patent ID: 7339669

Claim:
A device for the analysis of the qualitative composition of gases, in which measuring light of a known spectral composition can pass through the gas to be analyzed and the gas can be caused to interact, the device comprising: a first detector element having a first emitted light wavelength detection range, said first detector element being positioned to detect light emitted from areas of interaction between the measuring light and the gas to be analyzed; a second detector element having a second emitted light wavelength detection range, said second detector element being positioned to detect light emitted from areas of interaction between the measuring light and the gas to be analyzed, said second emitted light wavelength detection range being different than said first emitted light wavelength detection range; at least one refractive-diffractive optical element, said at least one refractive-diffractive optical element dispersing light onto said first detector element in a wavelength dependent manner, said at least one refractive-diffractive optical element dispersing the light onto said second detector element in a wavelength dependent manner, said at least one refractive-diffractive optical element focusing light on said first detector element, said at least one refractive-diffractive optical element focusing light on said second detector element, said at least one refractive-diffractive optical element being transparent over an entire surface thereof, said at least one refractive-diffractive optical element being arranged in a ray path between the area in which the interaction takes place between the gas to be analyzed and the measuring light and said first detector element and said second detector element.