Results 221 to 230 of about 1,069,804 (254)
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Fiber Optic Scanner for Measurement of Luminance Distribution in Space
SPIE Proceedings, 2003In many cases we have to measure the luminance function in the space. This function we can find in the conventional way -- making a lot of measurements in different directions. For the purpose of automatization of that process, authors offer new construction of fiber optic photometry head for luminance measurement, based on light fiber element which is
Jan Dorosz +2 more
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Visual stimulus presentation using fiber optics in the MRI scanner
Journal of Neuroscience Methods, 2008Imaging the neural basis of visuomotor actions using fMRI is a topic of increasing interest in the field of cognitive neuroscience. One challenge is to present realistic three-dimensional (3-D) stimuli in the subject's peripersonal space inside the MRI scanner.
Ruey-Song, Huang, Martin I, Sereno
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CLINICAL USE OF A FIBER OPTIC SCANNER
Proceedings of the International Conference NT + ME`24 (Gurzuf, from June 2 to June 9, 2024)The use of a safe fiber-optic scanner in diagnostic systems of maxillofacial pathologies for the formation of a plastic model of the relief of the patient's palate and dentition is justified.
T.V. Gaivoronskaya +7 more
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High-Frequency Optical Scanner Based on Bending Vibration of Optical Fiber
Japanese Journal of Applied Physics, 2006In this paper, we present a high-frequency optical scanner based on a vibrating optical fiber where the lateral displacement and rotation of the optical fiber end and the acoustooptic effect due to the stress induced in the fiber core by the vibration provide a large deflection angle of the light beam.
Ryoichi Isago +4 more
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Design and Fabrication of Optical MEMS Scanners for Optically Modulated Fiber Endoscopes
IEEE/LEOS International Conference on Optical MEMS and Their Applications Conference, 2006., 2006This paper reports a design and fabrication of micro scanner for optically modulated fiber endoscopes of medical use that are not powered through electrical wires but with a photovoltaic ...
M. Nakada +4 more
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A Photovoltaically Modulated MEMS Optical Scanner for Fiber Endoscope
2006 International Conference on Microtechnologies in Medicine and Biology, 2006We have developed a new SiP (system in package) style optical MEMS (microelectromechanical system) component for fiber optic endoscope that operates without using external power supply. The endoscope sensor head (5 mm in outer diameter) attached at the end of an optical fiber is designed for the use of in vivo medical diagnosis such as gastrointestinal
Changho Chong +4 more
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A compact fiber optic scanner using electromagnetic actuation
SPIE Proceedings, 2005Electromagnetic actuation shows promising suitability for constructing actuators and sensors with an optical fiber in terms of speeds, device dimensions, and power consumption. In this work we invented a fiber scanner which is composed of an optical fiber coated with nickel powder based ferromagnetic gel. The optical scanner, in which the optical fiber
Hans P. Hu, Kevin D. Le, J.-C. Chiao
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Measuring optical quality with a fiber optic double pass pointspread focal scanner
Optical Society of America Annual Meeting, 1990We describe a device for measuring the optical quality of a lens. It employs two fiber optic bundles which are randomly intermixed and combined at one end. Narrow band, spectrally filtered light is supplied to the mixed end through the "driving" bundle. This is collimated by a long focal length achromatic doublet. Behind the lens to be tested, near its
B. Howland, D. D. Denton, N. C. Howland
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Design and implementation of a 2-D endoscopic optical fiber scanner
SPIE Proceedings, 2008We have designed a small type of endoscopic 2D fiber scanner probe to incorporate OCT with endoscopy imaging. The new probe consists with two piezoelectric ceramics plated with electrode, a conductive thin-film with non-inverse piezoelectric effect and a piece of nude fiber with coating layers removed. To accomplish the scanning, the only thing need
Zhihai Liu +3 more
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Two-Mode Fiber-Optic Time-Delay Scanner for White-Light Interferometry
Optics Letters, 1995We present a scheme for scanning time delay by a variable-delay interferometer constructed from a two-mode optical fiber. The delay is generated by coupling between the two spatial modes of the fiber by means of acousto-optic interaction. The construction and performance of the system are discussed.
P G, Sinha, E, Kolltveit, K, Bløtekjær
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