Freeform Secondary Optics for LED Independent Beam-shaping PDF Download
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Author: Mahmoud Essameldin
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This research is conducted to solve a functional principle problem in light beam shaping in the field of illumination. Beam-shaping is the process of redistributing the light intensity to meet the application's requirements using secondary optical systems (e.g., refractive lenses). The functional problem is the deviation of the created output light intensity distribution from the expected design objective, which is observed very often in the experimental setups. The output intensity deviations could be due to deviations in the input source intensity. Therefore, the focus is to develop a secondary lens design approach to perform beam-shaping. This design approach reduces the dependency relationship between the input source intensity distribution and the created output target intensity distribution. This thesis deals with modeling, designing, simulating, and testing several secondary lenses. The current state-of-the-art design approaches are overviewed, and practical examples are used to present the source-target dependency problem. Both analytical and numerical methods are discussed to perform light beam shaping in different levels of complexity. The main contribution of this thesis is the development and testing of a combined design approach for creating freeform lens-arrays (working almost independently of the light source intensity distribution). Results show the ability to perform light beam-shaping, almost independent of the light source intensity distribution. This could be achieved by combining two design approaches in designing freeform lens-arrays to redistribute and superimpose the light intensity. The source-target independence relationship leads to the ability to consider the input light source intensity as a uniform intensity distribution taking into account the number of freeform lens-lets. The independence relationship could be improved by increasing the number of the superimposed light distributions by increasing the number of freeform lens-lets. The increment of the freeform lens-lets should be performed considering the fabrication limits. The optical function of the designed freeform optics is evaluated numerically using the lab software ZEMAX-OpticStudio and experimentally using the lab testing setups. Finally, several application examples are investigated considering the combined design approach.
Author: Mahmoud Essameldin
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This research is conducted to solve a functional principle problem in light beam shaping in the field of illumination. Beam-shaping is the process of redistributing the light intensity to meet the application's requirements using secondary optical systems (e.g., refractive lenses). The functional problem is the deviation of the created output light intensity distribution from the expected design objective, which is observed very often in the experimental setups. The output intensity deviations could be due to deviations in the input source intensity. Therefore, the focus is to develop a secondary lens design approach to perform beam-shaping. This design approach reduces the dependency relationship between the input source intensity distribution and the created output target intensity distribution. This thesis deals with modeling, designing, simulating, and testing several secondary lenses. The current state-of-the-art design approaches are overviewed, and practical examples are used to present the source-target dependency problem. Both analytical and numerical methods are discussed to perform light beam shaping in different levels of complexity. The main contribution of this thesis is the development and testing of a combined design approach for creating freeform lens-arrays (working almost independently of the light source intensity distribution). Results show the ability to perform light beam-shaping, almost independent of the light source intensity distribution. This could be achieved by combining two design approaches in designing freeform lens-arrays to redistribute and superimpose the light intensity. The source-target independence relationship leads to the ability to consider the input light source intensity as a uniform intensity distribution taking into account the number of freeform lens-lets. The independence relationship could be improved by increasing the number of the superimposed light distributions by increasing the number of freeform lens-lets. The increment of the freeform lens-lets should be performed considering the fabrication limits. The optical function of the designed freeform optics is evaluated numerically using the lab software ZEMAX-OpticStudio and experimentally using the lab testing setups. Finally, several application examples are investigated considering the combined design approach.
Author: Fred M. Dickey
Publisher: CRC Press
ISBN: 1466561017
Category : Technology & Engineering
Languages : en
Pages : 589
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Book Description
Laser Beam Shaping: Theory and Techniques addresses the theory and practice of every important technique for lossless beam shaping. Complete with experimental results as well as guidance on when beam shaping is practical and when each technique is appropriate, the Second Edition is updated to reflect significant developments in the field. This authoritative text: Features new chapters on axicon light ring generation systems, laser-beam-splitting (fan-out) gratings, vortex beams, and microlens diffusers Describes the latest advances in beam profile measurement technology and laser beam shaping using diffractive diffusers Contains new material on wavelength dependence, channel integrators, geometrical optics, and optical software Laser Beam Shaping: Theory and Techniques, Second Edition not only provides a working understanding of the fundamentals, but also offers insight into the potential application of laser-beam-profile shaping in laser system design.
Author: Roland Winston
Publisher: Elsevier
ISBN: 0080479731
Category : Technology & Engineering
Languages : en
Pages : 511
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Book Description
From its inception nearly 30 years ago, the optical subdiscipline now referred to as nonimaging optics, has experienced dramatic growth. The term nonimaging optics is concerned with applications where imaging formation is not important but where effective and efficient collection , concentration, transport and distribution of light energy is - i.e. solar energy conversion, signal detection, illumination optics, measurement and testing. This book will incorporate the substantial developments of the past decade in this field.* Includes all substantial developments of the past decade in the rapidly moving field of nonimaging optics* The only authoritative reference on nonimaging optics, from the leader in the field
Author: Frank Träger
Publisher: Springer Science & Business Media
ISBN: 3642194095
Category : Science
Languages : en
Pages : 1704
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Book Description
This new edition features numerous updates and additions. Especially 4 new chapters on Fiber Optics, Integrated Optics, Frequency Combs and Interferometry reflect the changes since the first edition. In addition, major complete updates for the chapters: Optical Materials and Their Properties, Optical Detectors, Nanooptics, and Optics far Beyond the Diffraction Limit. Features Contains over 1000 two-color illustrations. Includes over 120 comprehensive tables with properties of optical materials and light sources. Emphasizes physical concepts over extensive mathematical derivations. Chapters with summaries, detailed index Delivers a wealth of up-to-date references.
Author: Alastair Gordon
Publisher: Princeton Architectural Press
ISBN: 1568983212
Category : Architecture
Languages : en
Pages : 132
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Book Description
For clients in the Hamptons, the Jersey shore, and in New England, Andrew Geller built dozens of houses, most of wood, and most on modest budgets. These spirited houses, many shown here for the first time through vintage photos and drawings, still delight today and will inspire anyone interested in beach house living. 85 photos, 25 in color.
Author: Biswanath Mukherjee
Publisher: Springer Nature
ISBN: 3030162508
Category : Technology & Engineering
Languages : en
Pages : 1169
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Book Description
This handbook is an authoritative, comprehensive reference on optical networks, the backbone of today’s communication and information society. The book reviews the many underlying technologies that enable the global optical communications infrastructure, but also explains current research trends targeted towards continued capacity scaling and enhanced networking flexibility in support of an unabated traffic growth fueled by ever-emerging new applications. The book is divided into four parts: Optical Subsystems for Transmission and Switching, Core Networks, Datacenter and Super-Computer Networking, and Optical Access and Wireless Networks. Each chapter is written by world-renown experts that represent academia, industry, and international government and regulatory agencies. Every chapter provides a complete picture of its field, from entry-level information to a snapshot of the respective state-of-the-art technologies to emerging research trends, providing something useful for the novice who wants to get familiar with the field to the expert who wants to get a concise view of future trends.
Author: Ekkard Brinksmeier
Publisher: Springer Science & Business Media
ISBN: 3642330002
Category : Technology & Engineering
Languages : en
Pages : 218
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Book Description
High quality optical components for consumer products made of glass and plastic are mostly fabricated by replication. This highly developed production technology requires several consecutive, well-matched processing steps called a "process chain" covering all steps from mold design, advanced machining and coating of molds, up to the actual replication and final precision measurement of the quality of the optical components. Current market demands for leading edge optical applications require high precision and cost effective parts in large volumes. For meeting these demands it is necessary to develop high quality process chains and moreover, to crosslink all demands and interdependencies within these process chains. The Transregional Collaborative Research Center "Process chains for the replication of complex optical elements" at Bremen, Aachen and Stillwater worked extensively and thoroughly in this field from 2001 to 2012. This volume will present the latest scientific results for the complete process chain giving a profound insight into present-day high-tech production.
Author: Ramesh Raskar
Publisher: A K Peters/CRC Press
ISBN: 9781568813134
Category : Computers
Languages : en
Pages : 0
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Book Description
Computational Photography combines plentiful computing, digital sensors, modern optics, actuators, probes, and smart lights to escape the limitations of traditional film cameras and enables novel imaging applications. This book provides a practical guide to topics in image capture and manipulation methods for generating compelling pictures for graphics, special effects, scene comprehension, and art. The computational techniques discussed cover topics in exploiting new ideas in manipulating optics, illumination, and sensors at time of capture. In addition, the authors describe sophisticated reconstruction procedures from direct and indirect pixel measurements that go well beyond the traditional digital darkroom experience.
Author: Amit Bandyopadhyay
Publisher: CRC Press
ISBN: 1498766706
Category : Technology & Engineering
Languages : en
Pages : 547
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Book Description
The field of additive manufacturing has seen explosive growth in recent years due largely in part to renewed interest from the manufacturing sector. Conceptually, additive manufacturing, or industrial 3D printing, is a way to build parts without using any part-specific tooling or dies from the computer-aided design (CAD) file of the part. Today, mo
Author: J.J. Beaman
Publisher: Springer Science & Business Media
ISBN: 1461563275
Category : Technology & Engineering
Languages : en
Pages : 332
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Book Description
Solid Freeform Fabrication is a set of manufacturing processes that are capable of producing complex freeform solid objects directly from a computer model of an object without part-specific tooling or knowledge. In essence, these methods are miniature manufacturing plants which come complete with material handling, information processing and materials processing. As such, these methods require technical knowledge from many disciplines; therefore, researchers, engineers, and students in Mechanical, Chemical, Electrical, and Manufacturing Engineering and Materials and Computer Science will all find some interest in this subject. Particular subareas of concern include manufacturing methods, polymer chemistry, computational geometry, control, heat transfer, metallurgy, ceramics, optics, and fluid mechanics. History of technology specialists may also find Chapter 1 of interest. Although this book covers the spectrum of different processes, the emphasis is clearly on the area in which the authors have the most experience, thermal laser processing. In particular, the authors have all been developers and inventors of techniques for the Selective Laser Sintering process and laser gas phase techniques (Selective Area Laser Deposition). This is a research book on the subject of Solid Freeform Fabrication.
