Features Contains over two-color illustrations. Includes over 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. It is the most instructive textbook on the theory and optical effects of semiconductors. The entire presentation is based on a one-dimensional tight-binding model.
Starting with discrete-level systems, increasing complexity is added gradually to the model by including band-structure and many-particle interaction. Various linear and nonlinear optical spectra and temporal phenomena are studied. The analysis of many-body effects in nonlinear optical phenomena covers a major part of the book. The authors introduce the differences between near-field optics and far-field optics from both an experimental and theoretical perspective.
The book touches on a wide range of topics in near-field optics, and can be used both by the novice and experienced researcher already familiar with the subject, to connect the experimental with the theoretical aspects of near-field optics.
Topics include basic geometric optics, basic wave optics, and basic photon and quantum optics. Monday, May 22, Links Navigation. Previous Posts 21 19 22 18 17 16 15 14 13 Monday, May 22, 20 Aberrations Chromatic color Aberrations: is the change in light direction in materials with different refractive index due to the different wavelengths of light. A simple plus lens will bend blue light rays more than red rays, leading to the optical aberration known as chromatic aberration. The blue rays come to focus closer to the lens than the red rays.
Chromatic aberration occurs strongly in the human eye; with almost 3. This is the basis of the red-green test used for refinement of the sphere power in clinical refraction. Aberration can be modified by Changing the shape of the lens Changing the refractive index of the lens Changing the aperture size results in fewer marginal rays Changing the position of the aperture In general, it is not possible to eliminate all aberration at once.
Spherical aberration is shape dependent. Spherical aberration normally increases as you move towards the peripheral portion of the lens. This is because the deviating power of the lens increases towards the periphery of the lens Prentice Rule. To minimize spherical aberration, a biconvex lens is used. Aspheric lenses, lenses where the radius of curvature gets flatter in the periphery have less power at the edge of the lens also help minimize aberrations.
The cornea is an aspheric surface that gradually flattens towards the periphery. Aperture size: The larger the aperture, the more spherical aberration from marginal rays occurs. Learn from the experts with contributions from an all-star duo of seasoned authors.
Enhance your fundamental knowledge in ophthalmology and reinforce learning objectives using illustrated cases. Access the complete contents online at www. The case-based resource you need to prepare for the American Board of Ophthalmology oral exam. This unique resource boils down the overwhelming subject matter of clinical optics and refraction, helping the ophthalmologist cover the essentials in a single review manual.
The content is based upon the practical experience of two clinically active experts who lecture on ophthalmic optics around the world. This updated Second Edition by Drs. David G. Hunter and Constance E. West includes new questions added to selected chapters and a new chapter covering refractive surgery, as well as a key chapter that helps you evaluate patients with symptoms related directly to optical or refractive concerns.
The complex concepts of optics are revealed in easy-to-understand explanations enhanced by simple illustrations. Last-Minute Optics, Second Edition allows you to test your knowledge while increasing your understanding of optics. Designed in a clear, concise, question-and-answer format, this book allows for self-assessment and a chance to test your understanding before you read the answer.
Look no further than the Clinical Optics Primer for Ophthalmic Medical Personnel: A Guide to Laws, Formulae, Calculations, and Clinical Applications, a new text that presents complex clinical optics in a simple and easy-to-read manner.
As ophthalmic medical personnel struggle today between multiple resources for clinical optics, this text offers a solution as it provides everything you need to know — all in one place.
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