Search results
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Title
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A COMPUTATIONAL SPECTRAL IMAGING TECHNIQUE AND ITS APPLICATION IN FORM METROLOGY
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Author
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Habibi, Nasim
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Date Created
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2017
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Subjects--Topical
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Optics
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Description
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Many existing systems for three-dimensional (3D) shape measurement require mechanical moving parts that limit the measurement speed. A non-contact optical system that does not requires any moving parts can, in principle, increase the speed of meas...
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Title
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Absolute Surface Reconstruction by Slope Metrology and Photogrammetry
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Author
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Dong, Yue
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Date Created
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2014
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Subjects--Topical
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Optics
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Description
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Developing the manufacture of aspheric and freeform optical elements requires an advanced metrology method which is capable of inspecting these elements with arbitrary freeform surfaces. In this dissertation, a new surface measurement scheme is in...
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Title
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Areal gear metrology with modified flanks
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Author
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Ni, Kang
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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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Gears are critical mechanical components in power transmission systems, used across a board spectrum of industries such as automobile, aerospace and renewable energy. Given the advancement of design and manufacture of gears in the past decades, th...
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Title
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Calibrating slope-dependent errors in profilometry
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Author
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Zhou, Yue
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Date Created
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2014
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Subjects--Topical
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Mechanical engineering, Optics
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Description
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Optical profilometers, such as scanning white light interferometers and confocal microscopes, provide high resolution measurements and are widely utilized in many fields for measuring surface topography. The techniques are capable of high-speed su...
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Title
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DYNAMIC RANGE ENHANCMENT IN DIGITAL FRINGE PROJECTION AND LASER INTERFEROMETRY
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Author
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Babaie, Gelareh
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Date Created
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2015
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Subjects--Topical
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Optics, Engineering, Meteorology
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Description
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GELAREH BABAIE. Dynamic range enhancement in digital fringe projection and laser interferometry. (Under the direction of DR. FARAMARZ FARAHI)Optical metrology is the science and technology concerning measurements with light. Surface texture and 3D...
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Title
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Evaluation of Spatial Resolution and The Non-Linearity Analysis for 3-D Metrology
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Author
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Jain, Swati
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Date Created
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2021
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Subjects--Topical
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Optics, Physics
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Description
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Structured light systems (SLS) have become increasingly important for three-dimensional shape measurements. A quantitative evaluation of the spatial resolution is also becoming increasingly important. The spatial frequency response of the instrume...
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Title
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FIBER BASED TOOLS FOR POLISHING OPTICAL MATERIALS
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Author
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Shahinian, Hossein
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Date Created
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2018
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Subjects--Topical
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Mechanical engineering, Optics
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Description
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In this dissertation, the development of alternative fiber based polishing tools for the finishing of precision freeform and aspherical optics is introduced. Freeform and aspherical optics, i.e. optics with varying radius of curvatures (ROC), are ...
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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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In Situ Fringe Projection Profilometry for Laser Powder Bed Fusion Process
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Author
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Zhang, Bin
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Date Created
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2017
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Subjects--Topical
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Mechanical engineering, Optics, Engineering
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Description
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Additive manufacturing (AM) offers an industrial solution to produce parts with complex geometries and internal structures that conventional manufacturing techniques cannot produce. However, current metal additive process, particularly the laser p...
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Title
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LOW UNCERTAINTY SURFACE AREA MEASUREMENT USING DEFLECTOMETRY
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Author
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Pouya Fard, Ali
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Date Created
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2018
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Subjects--Topical
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Optics, Engineering, Metaphysics
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Description
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Deflectometry has been introduced as a viable alternative to interferometric measurement of specular freeform optical surfaces. Deflectometry measurements show high repeatability; however, due to the errors remaining after the calibration and data...
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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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Novel Fiber Optic Tip Designs and Devices For Laser Surgery
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Author
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Hutchens, Thomas
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Date Created
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2013
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Subjects--Topical
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Optics
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Description
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Fiber optic delivery of laser energy has been used for years in various types of surgical procedures in the human body. Optical energy provides several benefits over electrical or mechanical surgery, including the ability to selectively target spe...
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Title
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Optical super-resolution and periodical focusing effects by dielectric microspheres
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Author
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Darafsheh, Arash
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Date Created
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2013
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Subjects--Topical
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Optics, Physics, Biomedical engineering
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Description
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Optical microscopy is one of the oldest and most important imaging techniques; however, its far-field resolution is diffraction-limited. In this dissertation, we proposed and developed a novel method of optical microscopy with super-resolution by ...
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Title
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Optically Projected Length Scale for Use in Photogrammetry
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Author
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Thewlis, Patrick
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Date Created
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2020
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Subjects--Topical
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Optics, Physics
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Description
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Photogrammetry is a measurement technique where 3D coordinate data and feature information can be extracted from 2D photographs or images. Length scale objects are calibrated artifacts placed into a photogrammetry scene which have precisely define...
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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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POSITIONING SENSOR BY COMBINING OPTICAL PROJECTION AND PHOTOGRAMMETRY
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Author
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Zheng, Benrui
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Date Created
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2014
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Subjects--Topical
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Optics, Engineering, Remote sensing
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Description
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Six spatial parameters, (x, y, z) for translation, and pitch, roll, and yaw for rotation, are used to describe the 3-dimensional position and orientation of a rigid body - the 6 degrees of freedom (DOF). The ability to measure these parameters is ...
