Co-design methods generally model the influence of the optical parameters only on the point spread function of the system without considering changes in light intensity that modify the signal to noise ratio of the digitized image. We include multiple noise sources in a model of imaging sensors intended for the co-design of an optical system and a n...
In this Letter, we present a method to design the freeform surfaces of an off-axis unobscured two-mirror telescope by integration of a system of differential equations. The system is derived from the differentiation of Fermat’s path principle and is integrated as an ordinary differential equation problem. The method is used to design the freeform s...
We present an ultra-compact infrared cryogenic camera integrated inside a standard SOFRADIR’s Detector Dewar Cooler Assembly (DDCA) and whose field of view is equal to 120°. The multichannel optical architecture produces four non-redundant images on a single SCORPIO detector with a pixel pitch of 15 µm. This ultra-miniaturized optical system brings...
Huge efforts have been made over the past years to miniaturize cameras working in the visible spectrum and to give them new features. Plenoptic cameras for example have emerged as a new way of capturing more than just a single 2D image. These cameras usually include a microlens array positioned between the main lens of the camera and the sensor suc...
