Loading patent…
AssigneeValtion Teknillinen Tutkimuskeskus
InventorsHeikki Seppa, Panu Helisto, Arttu Luukanen
Estimating the term…
The invention relates to a bolometer element, a bolometer cell, a bolometer camera, and a method for reading a bolometer cell. The bolometer cell comprises several bolometer elements. Each bolometer element comprises a first bolometer having a first heating resistance for sensing radiation power acting on the element, and a second bolometer having a second heating resistance, and in each bolometer element the first and second bolometers are electrically connected to each other in such a way that the heating resistance (611) of the first bolometer can be biased with the aid of a voltage through the heating resistance of the second bolometer in order to amplify the radiation power detected with the aid of the connection. With the aid of the invention, it is possible to implement an extremely sensitive bolometer camera.
Bolometer element comprising
Bolometer cell comprising several bolometer elements located in a one or two-dimensional matrix and conductors for detecting electrically from each bolometer element the radiation power acting on the bolometer elements, in which case each bolometer element comprises a first bolometer (301, 601) having a first heating resistance (311, 611) for sensing the radiation power acting on the element, wherein each bolometer element also comprises a second bolometer (302, 602) having a second heating resistance (312, 612), wherein in each bolometer element the first (301, 601) and the second bolometers (302, 602) are connected to each other electrically in such a way that the heating resistance (311, 611) of the first bolometer (301, 601) can be biased with the aid of a voltage through the heating resistance (312, 612) of the second bolometer (302, 602) in order to amplify the radiation power detected with the aid of the circuit.
Dependencies are inferred from the claim text.