Reduction of material mass of optical component in cryogenic camera by using high-order Fresnel lens on a thin germanium substrate - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied optics Année : 2015

Reduction of material mass of optical component in cryogenic camera by using high-order Fresnel lens on a thin germanium substrate

Résumé

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.
Fichier principal
Vignette du fichier
Grulois2015.pdf (566.82 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01229499 , version 1 (12-11-2021)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Tatiana Grulois, Guillaume Druart, Hervé Sauer, Mathieu Chambon, Nicolas Guérineau, et al.. Reduction of material mass of optical component in cryogenic camera by using high-order Fresnel lens on a thin germanium substrate. Applied optics, 2015, 54 (20), pp.6313-6320. ⟨10.1364/AO.54.006313⟩. ⟨hal-01229499⟩
186 Consultations
211 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More