Results 261 to 270 of about 40,593 (282)
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Waveguide to Microstrip Multi-Aperture Directional Coupler
9th European Microwave Conference, 1979, 1979A navel rectangular waveguide to microstripline multi-aperture directional coupler has been developed for operation in X-band. The results of investigations on coupling through large apertures used as elements of a multi-aperture coupler and the design of a waveguide to microstripline directional coupler are presented. The directivity of the coupler is
S.N. Prasad, S. Mahapatra
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Computational imaging based on multi-aperture optics
SPIE Proceedings, 2015Combination of optical encoding and algorithmic decoding provides high-performance and high-functional imaging modalities known as computational imaging. Multi-aperture optics has been effectively utilized as an optical encoder and enables us to implement novel imaging methods and systems.
Jun Tanida, Ryoichi Horisaki
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Discrete optical multi-aperture combiner: instrumental concept
SPIE Proceedings, 2012We present the conceptual design of a new interferometric instrument designed to combine a large number of apertures by means of 3D photonic beam combiners. We discuss 1) the general layout of the system, 2) the technical constraints for the instrument and 3) estimated performance of the instrument based on the modeling of the beam combiner based on
Minardi, Stefano +2 more
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Towards multi-aperture imaging using diffractive lens
Optical Technologies for Telecommunications 2018, 2019The use of multi-aperture cameras is one of the modern trends for imaging devices, both consumer-grade and professional. This paper presents the creation of multi-aperture cameras based on long-focus single diffraction lenses. These lenses are several times better than the common lenses in terms of weight and cost, but they are significantly inferior ...
Artem V. Nikonorov +6 more
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Multi-aperture approaches to miniaturized vision systems
2014 13th Workshop on Information Optics (WIO), 2014The miniaturization of digital imaging systems is currently reaching both physical and technological limits for conventional setups. Further ongoing miniaturization leads to a reduction the spatial resolution and the signal-to-noise ratio of the digital imaging system.
Andreas Bruckner +4 more
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Multi-Aperture Speckle Interferometry for Deformation Measurement
Journal of Optics, 1996We present a technique where in both in-plane and out-of-plane displacement components of the deformation vector can be sensed simulataneously with comparable sensitivjties and the information retrieved later. Detailed theoretical and experimenlal results are presented.
T. Santhanakrishanan +4 more
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Multi-aperture imaging device for airborne platforms
SPIE Proceedings, 2007Imaging devices are very attractive as sensors in modern airborne platforms and there is a continuing trend toward widespread employment of imaging either alone or in combination with complementary technologies. In the civil domain, modern silicon CCD and CMOS image sensors are becoming extremely small, so that the package size of commercial ...
L. C. Laycock, V. A. Handerek
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Imaging spectroscopy with a multi-aperture camera
2009 IEEE LEOS Annual Meeting Conference Proceedings, 2009A new type of spectroscopic sensitive camera was used in a clinical trial at the National Rehabilitation Hospital aimed at monitoring the healing process of several types of skin wounds. Results showed signi oxygen saturation related to a decrease in wound size.
Jessica C. Ramella-Roman +2 more
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Multi-Aperture Sensors For Precision-Guided Munitions
SPIE Proceedings, 1987A multi-aperture sensor concept has been developed as a solution to the U.S. Army and Air Force's need for a class of low-cost, adequate performance optical sensors capable of generating detection and tracking information for precision-guided munitions. The Honeywell multi-aperture sensor consists of a number of small apertures. Behind each aperture is
N. Huffnagle +3 more
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Dense lightfield reconstruction from multi aperture cameras
2014 IEEE International Conference on Image Processing (ICIP), 2014Plenoptic cameras based on micro lens arrays as well as multi aperture cameras are able to capture a multitude of images with slightly shifted viewpoints. Although the amount of parallax between adjacent views is limited, precautions have to be taken in order to avoid alias when performing direct lightfield rendering.
Matthias Ziegler +5 more
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