Download or read book Len s Lines written by Leonard Granger and published by WestBow Press. This book was released on 2015-06-10 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ancient and honorable sport of angling is what Lens Lines is all about. Fishing with its roots deep in the past and its traditions continuing to the present, provides us with a constant source of challenging stories. We hope you will find them interesting, and maybe even amusing at times. It is a real honor to write for this newspaper again, after some ten years since the last Lens Lines column. During that time I was taking care of my wife on a 24/7 basis, operating the farm, and continuing the wholesale fishing tackle business. It has been six months since she went home to be with the Lord and she said she would be there waiting for me. I told her the rest of my days I would try to live a life helping others. Lens Lines format has changed on April 1, 2011. While the stories are still about fishing they are no longer about fishing for fish. Now the stories hopefully will appeal to bringing Christians of all denominations back to churches in our area. The churches in California are only seeing some three percent of the population in church on Sunday. It is our prayer God will speak to you and join us in the church of your choice. If you want to reach me my address is [email protected]. Story ideas are most welcome as we share Gods Good news.

Download or read book Modern Lens Antennas for Communications Engineering written by John Thornton and published by John Wiley & Sons. This book was released on 2013-03-06 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to present the modern design principles and analysis of lens antennas. It gives graduates and RF/Microwave professionals the design insights in order to make full use of lens antennas. Why do we want to write a book in lens antennas? Because this topic has not been thoroughly publicized, its importance is underestimated. As antennas play a key role in communication systems, recent development in wireless communications would indeed benefit from the characteristics of lens antennas: low profile, and low cost etc. The major advantages of lens antennas are narrow beamwidth, high gain, low sidelobes and low noise temperature. Their structures can be more compact and weigh less than horn antennas and parabolic antennas. Lens antennas with their quasi-optical characteristics, also have low loss, particularly at near millimeter and submillimeter wavelengths where they have particular advantages. This book systematically conducts advanced and up-to-date treatment of lens antennas.

Download or read book A Test of Lens Resolution for the Photographer written by Irvine Clifton Gardner and published by . This book was released on 1941 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Circular provides the photographer with a set of charts by which the resolving power of a photographic lens may be numerically measured with respect to a definite scale of values. A detailed description is given of the procedure and technique to be followed in order that comparable values may be obtained by different observers. The test provides an objective method of testing a photographic lens.

Download or read book Method for Determining the Resolving Power of Photographic Lenses written by Francis Earl Washer and published by . This book was released on 1973 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contact Lens Practice E Book written by Nathan Efron and published by Elsevier Health Sciences. This book was released on 2023-01-17 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of contact lenses continues to evolve at a rapid pace, with new optical designs and vision correction options continually being developed. Additionally, the rapid expansion of clinical instrumentation offers eye care practitioners a wide choice of investigative techniques for assessing in-eye contact lens performance and diagnosing adverse reactions. Now in its fourth edition, Contact Lens Practice has been thoroughly updated and revised to capture these developments and more, and translate them into an organised and easily digestible resource. Written and edited by award-winning author, researcher, and lecturer, Professor Nathan Efron, this title provides a comprehensive, evidence-based overview of the scientific foundations and clinical applications of contact lens fitting. The text has been refreshed by the inclusion of five new authors – a mixture of scientists and clinicians, all of whom are at the cutting edge of their specialty. Serves as an essential companion and guide to current thinking and practice in the content lens field, ideal for use by optometrists, ophthalmologists, orthoptists, opticians, students, and contact lens industry professionals. Presents subject matter in a clear and logical format to allow the reader to quickly identify and comprehend key information. Features highly illustrated chapters in full colour, helping the reader to visualize core concepts. Includes completely rewritten chapters, by new authors, on scleral and corneo-scleral contact lenses, high ametropia, therapeutic applications, post-surgical lens fitting, and practice management. A new chapter on Post-Surgery Management consolidates core information on post-operative management involving contact lenses.

Download or read book Contact Lens Practice E Book written by Nathan Efron and published by Elsevier Health Sciences. This book was released on 2010-03-10 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly revised and updated, this popular book provides a comprehensive yet easy to read guide to modern contact lens practice. Beautifully re-designed in a clean, contemporary layout, this second edition presents relevant and up-to-date information in a systematic manner, with a logical flow of subject matter from front to back. This book wonderfully captures the ‘middle ground’ in the contact lens field ... somewhere between a dense research-based tome and a basic fitting guide. As such, it is ideally suited for both students and general eye care practitioners who require a practical, accessible and uncluttered account of the contact lens field. Outlines a rational clinical approach to modern contact lens fitting - practical advice for the clinic and the classroom Logical structure and systematic layout, with relevant chapters grouped into coherent sections for easy reference Up-to-date for accurate information Chapters are contextualised through cross-referencing - helping to reflect the relative importance of different topics Provides an 'historical time line' of contact lens development and explains the current global situation Explains how contact lenses are fabricated, designed, manufactured and measured Reviews the scientific principles that underpin the clinical application of contact lenses New chapter on daily disposable contact lenses. Contributing authors comprising optometrists, ophthalmologists, dispensing opticians, industry experts, researchers and clinicians – all of whom are true international leaders in their sub-specialty areas. Many new line diagrams and clinical photographs to illustrate, inform and explain the concepts outlined in the text. Special consideration is given to the most popular lens replacement systems – daily, two-weekly and monthly. Extensive appendices to assist chair-side decision making in everyday practice. Efron Grading Scales for Contact Lens Complications. Evidence-based approach with numerous up-to-date references at the end of each chapter.

Download or read book Ophthalmic Lenses and Prisms written by Charles Frederick Prentice and published by . This book was released on 1917 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Frames and Lenses written by Jenean Carlton and published by SLACK Incorporated. This book was released on 2000 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Basic Bookshelf for Eyecare Professionals is a series that provides fundamental and advanced material with a clinical approach to clinicians and students. A special effort was made to include information needed for the certification exams in ophthalmic and optometric assisting, low vision, surgical assisting, opticianry, and contact lens examiners. This book was written by a licensed dispensing optician for the express purpose of teaching optometric and ophthalmic assistants everything they need to know about frames and lenses. Ophthalmic frames are discussed in great detail, including basic principles, materials, special adaptations, and selection. Fitting and dispensing instructions are also included to help you satisfy your patients and customers.

Download or read book Certain Lens Fitted Film Packages Inv 337 TA 406 written by and published by DIANE Publishing. This book was released on with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contact Lenses written by Ken Daniels and published by SLACK Incorporated. This book was released on 1999 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Basic Bookshelf for Eyecare Professionals is a series that provides fundamental and advanced material with a clinical approach to clinicians and students. A special effort was made to include information needed for the certification exams in ophthalmic and optometric assisting, as well as for surgical assistants, opticians, plus low vision, and contact lens examiners. Perfect for the optometric and ophthalmic tech, this well-illustrated text includes detailed how-to's that will make contact lens fitting and patient education easy. The author starts with ocular anatomy and how it is affected by contact lens wear. Other topics include lens design and materials, patient selection and examination procedures, and fitting of both soft and rigid lenses (including astigmatic designs). Information on patient instruction, care of products, lens verification/modification, complications, and special fitting situations are also covered.

Download or read book Transient Lens Synthesis written by Carl E. Baum and published by CRC Press. This book was released on 1990-10-01 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work covers the use of differential scaling for the synthesis of lenses which pass transient TEM waves without reflection, loss or distortion. The subject is also discussed in the context of differential-impendance-matching and transient-time conservation which extends the concepts to anisotropic media. Examples are given, which are useful in EMP simulations, pulse-power equipment, and transient (wide band) antennas in general.

Download or read book Lens Design Fundamentals written by Rudolf Kingslake and published by Academic Press. This book was released on 1978-04-28 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large part of this book is devoted to a study of possible design procedures for various types of lens or mirror systems, with fully worked examples of each. The reader is urged to follow the logic of these examples and be sure that he understands what is happening, noticing particularly how each available degree of freedom is used to control one aberration. Not every type of lens has been considered, of course, but the design techniques illustrated here can readily be applied to the design of other more complex systems. It is assumed that the reader has access to a small computer to help with the ray tracing, otherwise he may find the computations so time-consuming that he is liable to lose track of what he is trying to accomplish.

Download or read book Essentials of Ophthalmic Lens Finishing written by Clifford W. Brooks and published by Elsevier Health Sciences. This book was released on 2003-11-07 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both opticians and optometrists are trained to grind and polish lenses and then to take the surfaced lens and finish it by centering it optically and grinding the edges so that the lens fits in the shape of the chosen frame. Thoroughly revised and updated with seven new chapters to cover changes in the industry, this 2nd edition provides a step-by-step understanding of lens finishing for the optometrist or optician. Content has been completely updated, reorganized and expanded to include the most recent industry changes. Updated photos illustrate the most current types of lenses and enhance comprehension of lens finishing. Seven new chapters cover rimless and semi rimless frames; environmental and safety concerns; lens insertion and standard alignment; nylon cord and other groove mountings; lens tinting and engraving; progressive addition lenses; and lens impact and resistance testing. An appendix of specific British Standards allows the book to easily travel to the UK and other countries that fashion their dispensing programs after the UK model. The Lens Centration Skills Series provides exercises to practice lens finishing and reinforce material from the text.

Download or read book Clinical Contact Lens Practice written by Edward S. Bennett and published by Lippincott Williams & Wilkins. This book was released on 2005 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text and reference addresses the full scope of contemporary contact lens science and practice. With two expert editors and 100 first-rate contributors, the book presents practitioners and students in optometry and ophthalmology with key facts on corneal anatomy, recent research, contact lens design, patient evaluation, clinical applications, patient education, and complications of contact lens wear. More than 600 illustrations complement the text. Clinical Contact Lens Practice will be the standard text for required contact lens courses and will be an invaluable everyday reference for practitioners.

Download or read book The American Encyclopedia and Dictionary of Ophthalmology written by Casey Albert Wood and published by . This book was released on 1917 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lens Design written by Haiyin Sun and published by CRC Press. This book was released on 2016-12-19 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Practical Guide to Lens Design focuses on the very detailed practical process of lens design. Every step from setup specifications to finalizing the design for production is discussed in a straight forward, tangible way. Design examples of several widely used modern lenses are provided. Optics basics are introduced and basic functions of Zemax are described. Zemax will be used throughout the book.

Download or read book The Lens written by NK Guy and published by Rocky Nook, Inc.. This book was released on 2012-10-08 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Which lens should I buy for my camera? It's such a simple question, but choosing the right lens or lenses is actually one of the most important photographic decisions you can make. Nothing affects the quality of a photo more than the lens. It's no longer just about the megapixels-it's the glass that makes all the difference! Many first-time buyers of DSLRs don't venture past the basic lens included in the box. While some are reluctant to spend more money, others are confused by all the buzzwords or are overwhelmed by all the choices out there. It's really a shame, because interchangeable lenses give you amazing scope for quality photography. Take in vast sweeping scenes with a wide angle lens. Capture faraway birds with a telephoto lens. Examine the tiniest detail of a flower with a macro lens. Record the perfect portrait with a prime lens. Anything is possible when you choose the right lens for the job! This book isn't a simple catalogue of available lenses. New products are coming out all the time, and comparing specific lenses can be difficult. Instead, author N.K. Guy gives you all the information you need to make smart buying decisions. Optical technology is demystified, arcane terminology is decoded, and practical tips are provided. The Lens will help you build the perfect lens collection to suit your needs-now and in the future.