Patent ID: 8153952

Claim:
A flame scanning device for monitoring a flame, comprising: a radiation collection and transmission element configured to collect flame radiation and transmit the collected flame radiation to detection elements; a flame sensor element configured to detect radiation and convert the detected radiation into electrical signals; and an evaluation unit configured to convert the electrical signals into flame parameters, wherein: the flame sensor element comprises at least two individual detectors each with an individual central detection wavelength and a width of observation window, respectively, the individual central detection wavelength and the width of observation window not overlapping and covering individual regions of interest of the spectrum of radiation, respectively; the flame sensor element comprises at least two detectors of a first group whose central detection wavelengths are in the range of 300 nm-700 nm, and at least two detectors of a second group whose central detection wavelengths are in the infrared range; the detectors of the first group and the detectors of the second group are arranged in a row arranged essentially transverse to a direction of impinging radiation; and all the detectors of the first group are located in a central part of the row, and the detectors of the second group are all arranged at one lateral outer position or at both lateral outer positions of the row.