Videen
Cheryl A. Videen, Stacy, MN US
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20090270909 | BACK-LOADING CATHETER - A catheter provided with a collapsible inner lumen within a main body. The catheter can deploy a distal protection device using a guidewire which is threaded through the inner lumen, the inner lumen collapsing upon retrieval of the device into the catheter main body. | 10-29-2009 |
Gorden Videen, Silver Spring, MD US
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20090190229 | Spherically shaped optical beamsplitter - A rotatable optical beamsplitter comprises an optically-transparent material and a partially-reflective layer. The optically-transparent material has a unitary spherical exterior surface. The partially-reflective layer is located at least partially within the optically transparent material. The spherically shaped optical beamsplitter demonstrates reduced optical distortion. | 07-30-2009 |
20090190230 | Cylindrically Shaped Optical Beamsplitter - An optical beamsplitter comprises an optically-transparent material and a partially-reflective layer therein. The optically-transparent material has a cylindrically shaped exterior surface which provides advantages. | 07-30-2009 |
20120259808 | PREDICTING THE OUTCOME OF A CHAOTIC SYSTEM USING LYAPUNOV EXPONENTS - Systems and methods for predicting the outcome of chaotic systems are described. An example of a prediction system disclosed herein includes, in general, functional elements to vary the initial conditions of a chaotic system and calculate a plurality of possible trajectories for the chaotic system. The prediction system also includes calculating a Lyapunov exponent for each of the plurality of possible trajectories and selecting the trajectory with the smallest Lyapunov exponent as the most likely trajectory to occur. | 10-11-2012 |
20120259902 | DETERMINING LYAPUNOV EXPONENTS - Systems and methods for calculating the Lyapunov exponent of a chaotic system are described. In one particular embodiment, a Lyapunov exponent calculating method includes obtaining a value indicative of a condition of a chaotic system and assigning the value to first and second precision levels, the second precision level having a higher level of precision than the first precision level. The method also includes iterating the chaotic system over time and comparing the value at the first precision level with the value at the second precision level. From the comparison of values at the first and second precision levels, the method calculates the Lyapunov exponent for the chaotic system. | 10-11-2012 |
Gorden Videen, Adelphi, MD US
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20130242301 | Methods and Apparatuses for Contact-Free Holographic Imaging of Aerosol Particles - Methods and apparatuses provide holographic contact-free imaging of aerosol particles in an efficient manner. One apparatus for holographic imaging of an aerosol particle may include: a delivery device configured to deliver the particle into a region; a light source for outputting a first beam of light and a second beam of light, wherein the first beam travels into the region producing a first light wave which is un-scattered by the particle and a second light wave that is scattered by the particle, and the second beam does not travel into the region; a beam splitter for combining the second beam with the scattered light of the first beam into combined interference light; an image sensor for sensing an interference pattern created by the combined interference light; and an image processor configured to generate an image of the aerosol particle based on the sensed interference pattern. | 09-19-2013 |
Gorden W. Videen, Silver Spring, MD US
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20100067007 | SYSTEMS FOR MEASURING BACKSCATTERED LIGHT USING FINITE SPEED OF LIGHT - A system for measuring backscattered light from a sample is given. Light is output from a light source towards a rotating mirror, and then reflected by the rotating mirror towards the sample. The sample reflects backscattered light back towards the rotating mirror, which, having moved during the time it took for the light to propagate from the mirror to the sample and back, reflects the backscattered light to a detector located at a physical separation from the light source. The detected backscattered light may be analyzed to determine various properties of the sample. | 03-18-2010 |