scholarly journals Design of a smart SiPM based on focal-plane processing elements for improved spatial resolution in PET

2011 ◽  
Author(s):  
F. Pozas-Flores ◽  
R. Carmona-Galán ◽  
J. Fernández-Berni ◽  
Á. Rodríguez-Vázquez
Keyword(s):  
Spatial Resolution ◽  
Focal Plane ◽  
Processing Elements ◽  
Focal Plane Processing

Microspectroscopy Using a Solid Immersion Lens

2001 ◽  
Vol 7 (S2) ◽  
pp. 148-149
Author(s):  
C.D. Poweleit ◽  
J Menéndez
Keyword(s):  
Spatial Resolution ◽  
Focal Plane ◽  
Numerical Aperture ◽  
Normal Incidence ◽  
Spot Size ◽  
Index Of Refraction ◽  
Objective Lens ◽  
Improvement Factor ◽  
Oil Immersion ◽  
Long Time

Oil immersion lenses have been used in optical microscopy for a long time. The light’s wavelength is decreased by the oil’s index of refraction n and this reduces the minimum spot size. Additionally, the oil medium allows a larger collection angle, thereby increasing the numerical aperture. The SIL is based on the same principle, but offers more flexibility because the higher index material is solid. in particular, SILs can be deployed in cryogenic environments. Using a hemispherical glass the spatial resolution is improved by a factor n with respect to the resolution obtained with the microscope’s objective lens alone. The improvement factor is equal to n2 for truncated spheres.As shown in Fig. 1, the hemisphere SIL is in contact with the sample and does not affect the position of the focal plane. The focused rays from the objective strike the lens at normal incidence, so that no refraction takes place.

Performance Analysis Of Mosaic Focal Plane Processing

1981 ◽  
Author(s):  
J. N. Patel ◽  
W. B. Tucker ◽  
S. A. Wolfenbarger
Keyword(s):  
Performance Analysis ◽  
Focal Plane ◽  
Focal Plane Processing

On spatial resolution of quasi-optical focal plane antenna array imagers

2004 ◽  
Author(s):  
Leonid V. Volkov ◽  
Alexander I. Voronko ◽  
Natalie L. Volkova
Keyword(s):  
Antenna Array ◽  
Spatial Resolution ◽  
Focal Plane ◽  
Plane Antenna

scholarly journals SWIR Photosensory

2021 ◽  
Vol 9 (6) ◽  
pp. 479-498
Author(s):  
Konstantin Boltar ◽  
Igor Burlakov ◽  
Natalya Iakovleva ◽  
Alekcey Polessky ◽  
Peter Kuznetsov ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Spectral Range ◽  
Barrier Layer ◽  
Focal Plane ◽  
Two Dimensional ◽  
Pulse System ◽  
Ingaas Layer ◽  
Long Wavelength ◽  
And Performance ◽  
Gated Viewing System

In this paper, we report on the design, the fabrication, and performance of SWIR photomodules using sensitive two-dimensional arrays based on InGaAs-heterostructures. The de- sign of suggested InGaAs-heterostructure includes InAlAs wideband barrier layer and high sensitive absorber InGaAs layer which are increasing the uniformity and operability of focal plane array (FPA), so the number of defect elements are less than 0.5 %. The possibilities of spectral range expanding into short-wavelength to 0.5 μm and into long-wavelength to 2.2 μm regions have been considered. The operation principals of active-pulse system for 0.9–1.7 μm spectral range based on InGaAs 320256 FPA with 30 μm pitch have been presented. The investigations showed that the infrared gated-viewing system based on the InGaAs 320256 FPA provided a spatial resolution of 0,6 m.

Focal-plane processing architectures for real-time hyperspectral image processing

2000 ◽  
Vol 39 (5) ◽  
pp. 835 ◽  
Author(s):  
Sek M. Chai ◽  
Antonio Gentile ◽  
Wilfredo E. Lugo-Beauchamp ◽  
Javier Fonseca ◽  
José L. Cruz-Rivera ◽  
...  
Keyword(s):  
Image Processing ◽  
Real Time ◽  
Focal Plane ◽  
Hyperspectral Image ◽  
Hyperspectral Image Processing ◽  
Processing Architectures ◽  
Focal Plane Processing
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