High resolution, wide field optical imaging of macaque visual cortex with a curved detector.

. Cortical activity can be recorded using a variety of tools, ranging in scale from the single neuron (microscopic) to the whole brain (macroscopic). There is usually a trade-off between scale and resolution; optical imaging techniques, with their high spatio-temporal resolution and wide field of view, are best suited to study brain activity at the mesoscale.

Optical Designs with Curved Detectors for Fiber Bragg Grating Interrogation Monitors.

In this paper, we evaluate the application of curved detectors and freeform optics technologies for fiber Bragg gratings (FBGs) interrogation monitors design. It is shown that, in a high-dispersion spectrograph scheme, the camera part operates in special conditions, which result in a field curvature change. This field curvature can be compensated by the use of a curved detector.

Curved detectors for astronomical applications: characterization results on different samples.

Due to the increasing dimension, complexity, and cost of future astronomical surveys, new technologies enabling more compact and simpler systems are required. The development of curved detectors allows enhancement of the performances of the optical system used (telescope or astronomical instrument), while keeping the system more compact. We describe here a set of five curved complementary metal-oxide semiconductor (CMOS) detectors developed within a collaboration between CEA-LETI and CNRS-LAM.

Design of optical systems with toroidal curved detectors.

We consider using toroidal curved detectors to improve the performance of imaging optical systems. We demonstrate that some optical systems have an anamorphic field curvature. We consider an unobscured reimaging three-mirror anastigmat as an example (f=960  mm, F/5.

Fast, wide-field and distortion-free telescope with curved detectors for surveys at ultralow surface brightness.

We present the design of an all-reflective, bifolded Schmidt telescope aimed at surveys of extended astronomical objects with extremely low surface brightness. The design leads to a high image quality without any diffracting spider, a large aperture and field of view (FoV), and a small central obstruction that barely alters the point spread function (PSF). As an example, we design a high-quality, 36 cm diameter, fast (f/2.

Combining freeform optics and curved detectors for wide field imaging: a polynomial approach over squared aperture.

In the recent years a significant progress was achieved in the field of design and fabrication of optical systems based on freeform optical surfaces. They provide a possibility to build fast, wide-angle and high-resolution systems, which are very compact and free of obscuration. However, the field of freeform surfaces design techniques still remains underexplored.