Download or read book Partially Coherent Imaging with a Multiaperture Optical System written by James P. Mills and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical analysis has been performed on the use of a six-element multi-aperture optical system for imaging of an incoherent object by sampling the degree of partial coherence of the optical field arriving at the multi-aperture system from the incoherent object. Keywords include: Partial Coherence, Multi-aperture, and Imaging.

Download or read book Multiaperture Optical System Research written by RTS LABS INC GAINESVILLE FL. and published by . This book was released on 1984 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: A lens corrleates unambiguously one object point with one and only one image point. In the case of multiaperture optics one object point may be observed by several eyelets, which in turn may create disks, rings, or even irregularly shaped figures as image elements - corresponding to the one object point. The correlation albeit being non-imaging is unambigous but also multiple, allowing verification by coincidence. The advantage of multiaperture optics are: Small size; Ruggedness; Mass production; Large field of view; and No focussing required. It was the object of the effort reported here to explore if such a device could be built and to predict the performance of such a device by computer model.

Download or read book Multiple aperture Optical Systems written by Society of Photo-optical Instrumentation Engineers and published by . This book was released on 1988 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Two point Resolution Criterion for Multi aperture Optical Systems written by Steven M. Watson (MAJ, USAF.) and published by . This book was released on 1987 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spacially Sampled Multi aperture Optical System for Robot Vision written by Ali Reza Baradar and published by . This book was released on 1983 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coherent Multiple Aperture Optical Imaging Systems Analysis and Design written by Dana J. Bergey and published by . This book was released on 1987 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The imaging of simple objects through coherent multiple aperture optical imaging systems was investigated. Multiple aperture telescopes are a candidate technology for the Strategic Defense Initiative missions of surveillance, tracking, and kill assessment. In this thesis, the multiaperture images of edges, slits, rectangles, and circles were theoretically predicted and experimentally produced. Photographs of the actual images produced in the lab were compared to the theoretical images, and the analytical and computer prediction techniques were found to be accurate. All of the results were analyzed to determine how different multiaperture geometries affected the images. It was found that multiaperture geometries affected the images. It was found that multiaperture imaging produces edge enhancement. The position of a single edge could be found exactly, while multiple edges sometimes produced slight edge shifts. A computer program was developed tat predicts that edge shifts that will be observed when imaging through a given multiple aperture. Larger subaperture spacings were found to exhibit better resolution but produced more ringing about the edges. The possibility of rotating the multiple aperture system to gather more information was discussed, as well as designs that include a central subaperture.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Foundations of Optical System Analysis and Design written by Lakshminarayan Hazra and published by CRC Press. This book was released on 2022-02-06 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the incorporation of scientific approach in tackling problems of optical instrumentation, analysis and design of optical systems constitute a core area of optical engineering. A large number of software with varying level of scope and applicability is currently available to facilitate the task. However, possession of an optical design software, per se, is no guarantee for arriving at correct or optimal solutions. The validity and/or optimality of the solutions depend to a large extent on proper formulation of the problem, which calls for correct application of principles and theories of optical engineering. On a different note, development of proper experimental setups for investigations in the burgeoning field of optics and photonics calls for a good understanding of these principles and theories. With this backdrop in view, this book presents a holistic treatment of topics like paraxial analysis, aberration theory, Hamiltonian optics, ray-optical and wave-optical theories of image formation, Fourier optics, structural design, lens design optimization, global optimization etc. Proper stress is given on exposition of the foundations. The proposed book is designed to provide adequate material for ‘self-learning’ the subject. For practitioners in related fields, this book is a handy reference. Foundations of Optical System Analysis and Synthesis provides A holistic approach to lens system analysis and design with stress on foundations Basic knowledge of ray and wave optics for tackling problems of instrumental optics Proper explanation of approximations made at different stages Sufficient illustrations for facilitation of understanding Techniques for reducing the role of heuristics and empiricism in optical/lens design A sourcebook on chronological development of related topics across the globe This book is composed as a reference book for graduate students, researchers, faculty, scientists and technologists in R & D centres and industry, in pursuance of their understanding of related topics and concepts during problem solving in the broad areas of optical, electro-optical and photonic system analysis and design.

Download or read book Performance of Coherently Illuminated Multiaperture Optical and Microwave Systems written by Steven Manley Watson and published by . This book was released on 1989 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the current designs of multi-aperture optical and microwave systems generate impulse responses which exhibit large side lobe irradiances. Those systems which are designed to minimize side lobe irradiances suffer large increases in the radial dimensions of the central lobes. the purpose of this research was to design and analyze multi-aperture systems which had impulse responses which exhibited side lobe irradiances less than that of the Airy pattern and central lobe widths less than or equal to that of a single large aperture of an equivalent diameter. Multi-aperture systems composed of 19, 37, 61, and 91 apertures satisfied these performance criteria. However, the amount of energy in the central lobes of these multi-aperture systems was less than that of an equivalent single large aperture. Further analysis indicated that central obscurations in each subaperture lowered the maximum side lobe irradiance in the 19 aperture arrays. Random dephasing of the antennas caused degraded performance of the arrays. the ability to steer the arrays using phase variations was investigated. the effects of a nontransmitting antenna in the 19 aperture array was studied.

Download or read book Two Point Resolution Criterion for Multi Aperture Optical Systems written by Steven M. Watson and published by . This book was released on 1987 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two point resolution criteria is the classic way of comparing telescopes. However, the standard two point resolution criterion is not appropriate for multi-aperture systems. This paper proposes a new two point resolution criterion based on the idea of thresholding the irradiances of the resulting far field diffraction patterns of multi-aperture optical systems. The threshold was defined as a fraction of the central lobe irradiance. The thresholds varied from 0.1 to 0.9 of the central lobe irradiance of the far field diffraction patterns. Theoretical data of normalized irradiance versus point separation for various multi-aperture optical systems were presented. The two point resolution for these configuration was analyzed. The two point resolution criterion using thresholds was demonstrated. The threshold criterion provided the information necessary to compare the two point resolution performance of a particular multi-aperture optical system illuminated coherently and incoherently. Also, this criterion allowed the comparison of the two point resolution performance of systems composed of three, four, and six subapertures illuminated incoherently. (Theses).

Download or read book Coherent Multiple Aperture Optical Imaging Systems written by Dana J. Bergey (2LT, USAF.) and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Infrared Adaptive and Synthetic Aperture Optical Systems written by R. Barry Johnson and published by . This book was released on 1986 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Optical Wireless Communication written by Xizheng Ke and published by Springer Nature. This book was released on with total page 1881 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Introduction to Applied Optics for Engineers written by F. Paul Carlson and published by Elsevier. This book was released on 2012-12-02 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Applied Optics for Engineers introduces the reader to applied optics and presents ideas on coherent optical data processing. Topics covered include applications and approximations for radiation fields; physical realizations of phase transformers, lenses, and systems; applications of optical filtering to data processing; and partial coherence. Several examples from bioengineering-related research are provided. This book is comprised of 10 chapters and begins with an introduction to the basic equations of physical optics that are derived using the wave treatment approach, resulting in the simpler geometrical (ray) optics approximation. The differential form of Maxwell's equations is considered, along with propagation in free space and Fermat's principle. The following chapters explore applications and approximations for radiation fields, with emphasis on Fraunhofer fields, circular and multiple apertures, and phase effects in apertures; physical realizations of phase transformers, lenses, and spherical and parabolic surfaces; and system transform concepts including Fourier transform representation of fields and calculation techniques for imaging through a lens. The remaining chapters focus on interface devices, interferometry, holography, and scattering. This monograph is intended for students and engineers with a traditional background in electromagnetic wave theory.

Download or read book Adaptive Optics for Astronomical Telescopes written by John W. Hardy and published by Oxford Optical and Imaging Sci. This book was released on 1998 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book by one of the leaders in adaptive optics covers the fundamental theory and then describes in detail how this technology can be applied to large ground-based telescopes to compensate for the effects of atmospheric turbulence. It includes information on basic adaptive optics components and technology, and has chapters devoted to atmospheric turbulence, optical image structure, laser beacons, and overall system design. The chapter on system design is particularly detailed and includes performance estimation and optimization. Combining a clear discussion of physical principles with numerous real-world examples, this book will be a valuable resource for all graduate students and researchers in astronomy and optics.

Download or read book Encyclopedia of Optical and Photonic Engineering Print Five Volume Set written by Craig Hoffman and published by CRC Press. This book was released on 2015-09-22 with total page 3726 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of the Encyclopedia of Optical and Photonic Engineering provided a valuable reference concerning devices or systems that generate, transmit, measure, or detect light, and to a lesser degree, the basic interaction of light and matter. This Second Edition not only reflects the changes in optical and photonic engineering that have occurred since the first edition was published, but also: Boasts a wealth of new material, expanding the encyclopedia’s length by 25 percent Contains extensive updates, with significant revisions made throughout the text Features contributions from engineers and scientists leading the fields of optics and photonics today With the addition of a second editor, the Encyclopedia of Optical and Photonic Engineering, Second Edition offers a balanced and up-to-date look at the fundamentals of a diverse portfolio of technologies and discoveries in areas ranging from x-ray optics to photon entanglement and beyond. This edition’s release corresponds nicely with the United Nations General Assembly’s declaration of 2015 as the International Year of Light, working in tandem to raise awareness about light’s important role in the modern world. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]

Download or read book Introduction to Aberrations in Optical Imaging Systems written by José Sasián and published by Cambridge University Press. This book was released on 2013 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: An accessible, well presented introduction to the theory of optical aberrations, covering key topics that are often missing from comparable books.