Search results
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Title
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Cutting Mechanics and Manufacture of Optics for Imaging Applications
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Author
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Troutman, John
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Date Created
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2016
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Subjects--Topical
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Mechanical engineering, Optics
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Description
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Ultraprecision diamond machining enables physical realization of freeform surfaces of nearly arbitrary complexity through turning and milling processes. Achievable form accuracies make diamond machining a viable alternative to conventional techniq...
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Title
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Experimental and computational evaluation of a vibratory finishing process
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Author
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Navare, Jayesh
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Date Created
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2017
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Subjects--Topical
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Mechanical engineering
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Description
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Vibratory finishing is among the widely recognized mass finishing techniques which is used for cleaning, deburring, edge rounding, polishing, and creating an isotropic surface finish on metal parts that have undergone previous machining operations...
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Title
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FREEFORM MEASUREMENT WITH STITCHING TALBOT INTERFEROMETER
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Author
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Furukawa, Yasunori
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Date Created
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2018
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Subjects--Topical
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Optics
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Description
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Freeform optics are being used in many fields to realize the outstanding performance due to their high degree of freedom. To realize sufficiently high performance, it is necessary to manufacture the freeform surface with high accuracy, which requi...
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Title
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FUNDAMENTALS OF MATERIAL REMOVAL IN SILICON CARBIDE FOR FREEFORM OPTICS
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Author
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Shanmugam, Prithiviraj
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Date Created
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2019
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Subjects--Topical
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Mechanical engineering
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Description
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The mechanical and thermal properties offered by Silicon carbide (SiC) make it an ideal material for reflective freeform optics. However, the hardness, brittleness and fracture toughness of the material pose a challenge to manufacturing. The manuf...
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Title
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From Nonradiating Sources to Directionally Invisible Objects
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Author
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Hurwitz, Elisa
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Date Created
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2017
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Subjects--Topical
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Optics, Physics
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Description
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The goal of this dissertation is to extend the understanding of invisible objects, in particular nonradiating sources and directional nonscattering scatterers. First, variations of null-field nonradiating sources are derived from Maxwell's equatio...
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Title
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Manufacture of Infrared Optics in Brittle Materials
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Author
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Owen, Joseph
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Date Created
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2015
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Subjects--Topical
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Mechanical engineering
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Description
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Infrared optics are manufactured for many different applications including: thermal imaging, surveillance, night vision, medical, laser machining, laser surgery, etc. Most infrared transparent materials are hard, brittle, or both. Unless special c...
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Title
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Manufacturing Methodologies and Optomechanics for Dynamic Freeform Optics
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Author
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Gurganus, Dustin
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Date Created
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2021
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Subjects--Topical
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Optics, Engineering, Mechanical engineering
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Description
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Freeform optics have traversed the gap from theoretical to practical application propelled by ultra-precision multi-axis machining, like diamond turning and milling. Utilized for complex infrared sensors to human vision correction, freeform optics...
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Title
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OPTICAL DISPLACEMENT MEASUREMENT BY IMAGE CORRELATION
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Author
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Lambert, Nathan
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Date Created
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2019
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Subjects--Topical
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Mechanical engineering
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Description
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This thesis describes the design and verification of a scanning, optical, displacement measurement instrument, which utilizes digital image correlation (DIC) to measure displacement. This system is intended to provide proof of concept for a techniq...
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Title
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Optical Vortices and Coherence in Nano-optics
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Author
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Smith, Matt
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Date Created
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2019
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Subjects--Topical
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Optics, Nanoscience, Nanotechnology
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Description
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In this dissertation, we use theory and computation to conduct three projects in the area of nano-optics. In the first project, we study optical coherence conversion using a plasmonic hole array. This work led to the discovery of the optical coher...
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Title
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PERFORMANCE AND SPECIFICATION OF OPTICAL COMPONENTS WITH MID-SPATIAL FREQUENCY SURFACE ERRORS
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Author
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Aryan, Hamidreza
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Date Created
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2019
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Subjects--Topical
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Mechanical engineering, Optics, Engineering
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Description
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The advent of sub-aperture computer-numerically controlled (CNC) manufacturing techniques has enabled new opportunities for high-performance optical components and systems. Freeform and other challenging designs are now possible like never before....
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Title
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Space Variant Guided Mode Resonant Filters
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Author
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Roth, Zachary
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Date Created
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2012
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Subjects--Topical
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Optics, Engineering, Nanoscience
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Description
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Guided mode resonance filters (GMRF) combine subwavelength gratings and planar slab waveguides to create highly efficient, narrow linewidth spectral filters. Resonances between diffracted orders of the SWG and the waveguide provide the mechanism f...
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Title
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Thermomechanical Modeling and Analysis of Precision Glass Molding Process
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Author
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Bobba, Dhanooj
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Date Created
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2023
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Subjects--Topical
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Mechanical engineering
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Description
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The tremendous development in digital technology in the last few decades has increased the demand for ultra-precision optical components with enhanced optical performance, such as aspherical or freeform lenses. Typically, lenses made of polymers h...
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Title
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Ultraprecision Diamond Machining of Polycarbonate Complex Multi-Sided Freeform Optics
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Author
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Swagler, Steven
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Date Created
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2022
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Subjects--Topical
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Optics, Mechanical engineering
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Description
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Advances in technology are driving optical systems to become more and more complex and compact. Ultra-precision machining centers have advanced to catch up with optical designs but there is a defined set of methods defining the use of the machines...