A coplanar refractive-diffractive doublet array employing surface-relief diffractive phase elements embedded within poly(methyl methacrylate) microlenses is introduced as an optomechanical building block for optoelectronic integrated systems. The design method, fabrication technology, and results are described. Coplanarity of the quadratic- and linear-phase elements constituting the doublet can...

The first part of the project was to develop a spreadsheet that would compute delivery accuracy of unguided weapons. This was accomplished with the assistance of LT T. Smith. The second part was to begin translating this methodology into a c++ environment capable of being integrated directly into JAWS. The third task related to the analysis of accuracy for the AGM -65 Maverick missile, and the ...

We evaluate unguided and guided visual search performance for a set of techniques that mitigate occlusion between physical and virtual objects on a tabletop display. The techniques are derived from a general model of hybrid physical/virtual occlusion, and take increasingly drastic measures to make the user aware of, identify, and access hidden objects—but with increasingly space-consuming and d...

This review paper discusses the complete evolution of free-space optical (FSO) communication, also known as unguided communication (UOC) technologies, all way back to ancient man’s fire today’s machine-learning-supported UOC systems. The principles, significance, and developments that have happened over past several decades, well installation methodologies, technological limitations, challenges...

2014 This paper investigates, more rigorously, the diffraction of a powerful optical carrier propagating in an unguided communication channel (dry atmosphere). Four main relevant topics are considered i) the radial temperature distribution, ii) the average beamwidth parameter, iii) a dimensionless optical distortion figure of merit, and iv) the irradiance tailoring technique as a method to redu...