Skip to Main content Skip to Navigation
Theses

Vers l'intégration de fonctions d'imagerie sur le plan focal infrarouge Application à la conception et à la réalisation d'une caméra sur puce infrarouge cryogénique

Florence de La Barrière 1 
1 Laboratoire Charles Fabry / Scop
LCF - Laboratoire Charles Fabry
Abstract : Miniaturizing optical systems is a research area of great interest nowadays: if they were smaller and cheaper, optical systems could be widespread in many applications. This work aims at designing very compact optical systems for imagery applications, which could be integrated near the infrared cryogenic detector and ideally directly on it.First, I have presented original design strategies to simplify and miniaturize optical systems. Approaches which lead to multichannel systems seem to be the most interesting ones to design compact and effective systems. Then, I have proposed two multichannel optical architectures, which are simple, compact, and integrated near the infrared detector. The first camera, which has a field of view equal to 120°, integrates a microlens array at a few hundreds of micrometers only of the infrared detector: it is called a wafer-level camera. Technological challenges have been overcome to manufacture this component. I have developed an image processing method, and assessed the characteristics of the camera experimentally. This system samples the final image with a pitch equal to 7,5 µm. This value is two times better than the one which could be obtained by using a one-channel camera associated with a state-of-the-art infrared detector, with a pixel pitch equal to 15 µm. In order to manufacture the second architecture, I have developed an original and simple method to obtain the microlens arrays, by compression molding of Potassium Bromide powder at ambient temperature. This work gives some elements to design a new generation of infrared detectors with an imagery function.
Complete list of metadata

Cited literature [135 references]  Display  Hide  Download

https://pastel.archives-ouvertes.fr/tel-00743676
Contributor : ABES STAR :  Contact
Submitted on : Friday, October 19, 2012 - 4:17:13 PM
Last modification on : Monday, May 17, 2021 - 8:03:07 AM
Long-term archiving on: : Saturday, December 17, 2016 - 2:55:06 AM

File

VD2_DELABARRIERE_FLORENCE_0510...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00743676, version 1

Collections

Citation

Florence de La Barrière. Vers l'intégration de fonctions d'imagerie sur le plan focal infrarouge Application à la conception et à la réalisation d'une caméra sur puce infrarouge cryogénique. Autre [cond-mat.other]. Université Paris Sud - Paris XI, 2012. Français. ⟨NNT : 2012PA112212⟩. ⟨tel-00743676⟩

Share

Metrics

Record views

1133

Files downloads

633