Broadband Near Ir Laser Hazard Filters
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Broadband Near Ir Laser Hazard Filters Phase 1
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Author : Gajendra Savant
language : en
Publisher:
Release Date : 1990
Broadband Near Ir Laser Hazard Filters Phase 1 written by Gajendra Savant and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
Fabrication of holographic broadband laser eye protection (BLEP) filters was investigated as a new approach to protecting ground troops from eye damage by near infrared (IR) lasers. The infrared broadband filters combined high optical density (OD>4), high photopic visual transmission efficiency (60 to 75%) and large angular protection (>40 deg) for the 694 nm wavelength and with the environmental stability necessary for battlefield conditions. Phase I research successfully fabricated broadband IR filters with excellent optical qualities. In addition, BLEP filters are compatible with flat and curved polycarbonate substrates and can be combined with absorption dye technology to yield cost effective hybrid technology for laser eyewear. This technology should be able to supply complete wavelength and angular laser protection for the near IR portion of the spectrum from 690 nm to 1100 nm for the Army's spectacle, goggle or visor configurations with appropriate OD and photopic efficiency. Further research is needed to extend this technology to contain hybrid scenarios on the various substrates noted above. The benefits are that protection against all agile laser threats in the 690 nm to 1100 nm region will be developed. Commercial applications of this broadband near IR rejection filter technology are to automotive and architectural Window glass coating for the reduction of cooling loads. In addition to eye protection, BLEP filters can be used for cockpit display filters, for night vision goggles, for broadband IR reflectors for space solar cell arrays, and perhaps even for very large (greater than 1 sq. m.) near IR optical mirrors.
Broadband Near Ir Laser Hazard Filters
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Author : Gajendra Savant
language : en
Publisher:
Release Date : 1992
Broadband Near Ir Laser Hazard Filters written by Gajendra Savant and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Ocular protection against laser radiation and ballistic fragments is required for military aviators and ground personnel. Protection against laser radiation in several laser hazard and threat wavelength regions is required to prevent ocular injury from existing potentially hazardous systems. The laser hazard and threat wavelengths extend from the ultraviolet through the near infrared. There is potential for a cost effective protection against fixed wavelength threats utilizing narrow-band holographic reflection filters for the visible portion of the spectrum. The IR portion of the spectrum can also be fully protected, by using the broad-band holographic filters that were being developed and tested during the first year of this program. POC's concept of broad-band near IR reflection filter fabrication in based on volume Bragg holography using photopolymers and dichromated gelatins. The successful performance of broad-band IR filters depends upon the survivability of their optical material (in this case, photopolymer or dichromated gelatin or a modified and/or composite graft of gelatin and polymer). As a result, chemical modifications to dichromated gelatin (DCG) through synthesis and chemical wet processing, can produce DCG based broad-band filters which are very stable to environmental changes of temperature, pressure, sunlight, etc.
Applications And Computational Elements Of Industrial Hygiene
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Author : Martin B. Stern
language : en
Publisher: CRC Press
Release Date : 2018-04-24
Applications And Computational Elements Of Industrial Hygiene written by Martin B. Stern and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-24 with Technology & Engineering categories.
Presenting the only textbook available today that covers all of the critical elements of industrial hygiene ó conceptual information, computational coverage, case studies, and sample problems and exercises ó in one volume. Organized around the basic rubrics of industrial hygiene, this book helps students to think like industrial hygienists while offering the latest techniques for practicing professionals. Applications and Computational Elements of Industrial Hygiene is the most complete reference available on IH, and is also an ideal study aid for exam preparation. This is the first and only textbook that includes all critical computations for each concept covered. Each chapter discusses a different hazard and how to recognize, evaluate, and control it. The advantage of this approach is clear; technical issues, instrumental techniques, engineering control procedures ó relevant issues from A to Z ó are discussed for each hazard. Chapters conclude with case studies that offer critical insight into the practical aspects of the field. The book also covers emerging issues that will affect industrial hygienists in the future. The book includes real-life situations and experiences to demonstrate practical applications of concepts presented in the text. For students, Applications and Computational Elements of Industrial Hygiene offers critical material formerly scattered across multiple sources. For seasoned industrial hygienists, this is an essential problem-solving tool and state-of-the-art reference that consolidates and updates previously scattered information.
Notices Of Changes In Classification Distribution And Availability
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Author :
language : en
Publisher:
Release Date : 1998-04
Notices Of Changes In Classification Distribution And Availability written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-04 with Science categories.
Listing Of Sbir Awardees For
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Author :
language : en
Publisher:
Release Date : 1991
Listing Of Sbir Awardees For written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Internet categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1995
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Science categories.
Light Lasers And Synchrotron Radiation
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Author : Martino Grandolfo
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29
Light Lasers And Synchrotron Radiation written by Martino Grandolfo and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-29 with Science categories.
This volume contains the formal record of the lectures presented at the 9th Course of the International School of Radiation Damage and Protection held at the "E . Majorana" International Centre for Scientific Culture in Erice (Italy) from May 9 to May 20, 1989. This course was the last of a series of 4 courses, started in 1981, that were dedicated to the assessment of risk hazard from non-ionizing radiation. The proceedings of these courses were all published by Plenum Press with the following headings: 1) M. Grandolfo, S. M. Michaelson and A. Rindi, Eds. : "Biological Effects and Dosimetry of Nonionizing Radiation; Radiofrequency and Microwave Energy", Plenum Press, New York, NATO ASI Series A Life Sciences, Vo1. 49 (1983); 2) M. Grandolfo, S. M. Michaelson and A. Rindi, Eds. : "Biological Effects and Dosimetry of Static and ELF Electromagnetic Fields", Plenum Press, New York, E. Majorana International Science Series, Life Sciences, Vol. 19 (1985) ; 3) M. H. Repacholi, M. Grandolfo and A. Rindi, Eds. : "Ultrasound; medical applications, biological effects and hazard potential", Plenum Press, New York (1987). We hope that all these volumes together may represent a complete textbook and a reference for the students and scientists interested in the physics, biology, measurement and dosimetry, health effects and standard setting, in short, the risk assessment of that wide field of radiation presently classified as non-ionizing radiation. We are indebted to the Associa?ione Italiana Protezione dalle Radiazioni (AIRP), The Internat:l.
Understanding Lasers
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Author : Jeff Hecht
language : en
Publisher: John Wiley & Sons
Release Date : 2018-11-27
Understanding Lasers written by Jeff Hecht and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-27 with Technology & Engineering categories.
The expanded fourth edition of the book that offers an essential introduction to laser technology and the newest developments in the field The revised and updated fourth edition of Understanding Lasers offers an essential guide and introduction that explores how lasers work, what they do, and how they are applied in the real world. The author—a Fellow of The Optical Society—reviews the key concepts of physics and optics that are essential for understanding lasers and explains how lasers operate. The book also contains information on the optical accessories used with lasers. Written in non-technical terms, the book gives an overview of the wide-variety laser types and configurations. Understanding Lasers covers fiber, solid-state, excimer, helium-neon, carbon dioxide, free-electron lasers, and more. In addition, the book also explains concepts such as the difference between laser oscillation and amplification, the importance of laser gain, and tunable lasers. The updated fourth edition highlights the most recent research and development in the field. This important resource: Includes a new chapter on fiber lasers and amplifiers Reviews new topics on physics of optical fibers and fiber lasers, disk lasers, and Ytterbium lasers Contains new sections on Laser Geometry and Implications, Diode Laser Structures, Optimal Parametric Sources, and 3D Printing and Additive Manufacturing Puts the focus on research and emerging developments in areas such as spectroscopy, slow light, laser cooling, and extremely precise measurements Contains appendices, glossary, and index that help make this book a useful reference Written for engineering and physics students, engineers, scientists, and technicians, the fourth edition of Understanding Lasers contains the basic concepts of lasers and the most recent advances in the technology.
Application And Theory Of Periodic Structures
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Author : Tomasz Jannson
language : en
Publisher:
Release Date : 1995
Application And Theory Of Periodic Structures written by Tomasz Jannson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Science categories.
Light Scattering Technology For Food Property Quality And Safety Assessment
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Author : Renfu Lu
language : en
Publisher: CRC Press
Release Date : 2017-11-22
Light Scattering Technology For Food Property Quality And Safety Assessment written by Renfu Lu and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-22 with Science categories.
Light Scattering Technology for Food Property, Quality and Safety Assessment discusses the development and application of various light scattering techniques for measuring the structural and rheological properties of food, evaluating composition and quality attributes, and detecting pathogens in food. The first four chapters cover basic concepts, principles, theories, and modeling of light transfer in food and biological materials. Chapters 5 and 6 describe parameter estimation methods and basic techniques for determining optical absorption and scattering properties of food products. Chapter 7 discusses the spatially-resolved measurement technique for determining the optical properties of food and biological materials, whereas Chapter 8 focuses on the time-resolved spectroscopic technique for measuring optical properties and quality or maturity of horticultural products. Chapter 9 examines practical light scattering techniques for nondestructive quality assessment of fruits and vegetables. Chapter 10 presents the theory of light transfer in meat muscle and the measurement of optical properties for determining the postmortem condition and textural properties of muscle foods and meat analogs. Chapter 11 covers the applications of spatially-resolved light scattering techniques for assessing quality and safety of animal products. Chapter 12 looks into light scattering for milk and dairy processing. Chapter 13 examines the applications of dynamic light scattering for measuring the microstructure and rheological properties of food. Chapter 14 shows the applications of a biospeckle technique for assessing the quality and condition of fruits and vegetables. Chapter 15 provides a detailed description of Raman scattering spectroscopic and imaging techniques in food quality and safety assessment. Chapter 16, the final chapter, focuses on applications of light scattering techniques for the detection of food-borne pathogens.