We designed a compact infrared cryogenic camera using only one lens mounted inside the detector area. In the field of cooled infrared imaging systems, the maximal detector area is determined by the dewar. It is generally a sealed and cooled environment dedicated to the infrared quantum detector. By integrating an optical function inside it, we improve the compactness of the camera as well as its performances. The originality of our approach is to use a thin integrated optics which is a high quality Fresnel lens on a thin germanium substrate. The aim is to reduce the additional mass of the optical part integrated inside the dewar to obtain almost the same cool down time as a conventional dewar with no imaging function. A prototype has been made and its characterization has been carried out.
© 2015 Optical Society of AmericaFull Article | PDF Article
More Like This
Florence de la Barrière, Guillaume Druart, Nicolas Guérineau, Frédéric Champagnat, Aurélien Plyer, Gilles Lasfargues, and Serge Magli
Appl. Opt. 57(17) 4761-4770 (2018)
Florence de la Barrière, Guillaume Druart, Nicolas Guérineau, Gilles Lasfargues, Manuel Fendler, Nicolas Lhermet, and Jean Taboury
Appl. Opt. 51(8) 1049-1060 (2012)
Appl. Opt. 44(29) 6087-6091 (2005)