Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"Lens systems"”.
-
Design and Analysis of Refractive Optical Systems for Irradiance Redistribution of Collimated Radiation.
Lens systems that modify the irradiance distribution of a collimated beam of radiation are useful primarily in applications involving laser beams. Since a laser is a source of high intensity, coherent, monochromatic light, a number of diverse applications for lasers have been suggested. However, …
-
Radio-polarimetric observations of gravitational lenses
… radio-polarimetric properties of gravitational lens systems. Such studies can constrain lensed source properties, propagation effects in the intervening lensing galaxies, and the general-relativistic invariance of polarization under lensing. We performed high dynamic-range VLBI imaging …
-
Size is everything : universal features of quasar microlensing with extended sources
… has on the magnitude fluctuations of images in lens systems due to microlensing. We do this by convolving a variety of accretion disk models (including Gaussian disks, uniform disks, "cones," and a Shakura-Sunyaev thermal model) with two magnification patterns in the source plane, one with …
-
GHOST IMAGE ANALYSIS FOR OPTICAL SYSTEMS
… between the surfaces of multi-element lens systems. We present an algorithm to generate the ghost layout that is generated by two, four and up to N (even) reflections. For each possible ghost layout, paraxial ray tracing is performed to calculate the locations of the Gaussian cardinal …
-
Metric aspects of zoom vision
… at studying the calibration of array camera systems equipped with 12.5-75mm variable focal length lenses. Specific objectives included: identifying distortion parameters that effect 3-D positioning accuracy; developing a procedure for modeling the changes in distortion parameters that occur …
-
Diffraction-based Optical Architectures for Processing One-dimensional Data
… for designing aberration-free gradient index lenses. Parameter sweeps are demonstrated to find lenses within the framework, with minimal dynamic range of refractive index distributions found from two families of aberration-free collimation lenses. As such, the theoretical tools developed for …