21 research outputs found
A compact spectral camera for VIS-NIR imaging
This paper describes the design of a spectro-photo/radio-metric camera, that can be used in both portable and in-situ applications, whose compactness is made possible by a suitable image spectral scanning scheme based on a Linearly Variable Filter (LVF). Such filter is able to operate continuously from 400 nm to 2500 nm, allowing the hyper-spectral imaging from visible to near infrared. In traditional scanners the whole apparatus is moved along a path as long as the scene, whereas in this instrument the camera body is still and the LVF it is the only moving part. This solution allows a compact design and an easily portable instrument
Micro-beam and pulsed laser beam techniques for the micro-fabrication of diamond surface and bulk structures
Micro-fabrication in diamond is involved in a wide set of emerging
technologies, exploiting the exceptional characteristics of diamond for
application in bio-physics, photonics, radiation detection. Micro ion-beam
irradiation and pulsed laser irradiation are complementary techniques, which
permit the implementation of complex geometries, by modification and
functionalization of surface and/or bulk material, modifying the optical,
electrical and mechanical characteristics of the material. In this article we
summarize the work done in Florence (Italy) concerning ion beam and pulsed
laser beam micro-fabrication in diamond.Comment: 14 pages, 5 figure
Spatial filtering of visible light in a spectrophotometric camera fo art work imaging
The preservation and reproduction of a still artwork needs the knowledge of its spectral reflectance, obtainable in laboratory by spectrophotometric scanners. This work proposes the design of a miniaturized spectrophotometric camera with spatial filtering of the light for measuring the spectral reflectance factor and the spectral radiance of the objects of a scene