Some aspects of concentrating infrared radiation

The paper presents studies related to the creation of an effective concentrator of infrared radiation. Using such concentrators, it will be possible to detect weak or long-distance infrared radiation. According to the authors, in this case, the use of concentrators with reflective surfaces is preferable to lens concentrators. In particular, a phocone design is proposed, which consists of several sections. Each section is an independent phocone and focuses the rays incident on it by a single reflection. The phocone of the above design was tested and its efficiency was compared with a conventional conical phocone with the same concentration quality. The initial results of the experiment showed that its efficiency was higher. In addition, the dimensions (length) of the concentrator were significantly reduced.