Ophthalmic Lenses

Selected by the American Library Association's 'Choice' magazine as "best technical book," the first edition of this book soon established itself as the standard reference work on all aspects of photographic lenses and associated optical systems. This is unsurprising, as Sidney Ray provides a complete, comprehensive reference source for anyone wanting information on photographic lenses, from the student to the practitioner or specialist working with visual and digital media worldwide. This third edition has been fully revised and expanded to include the rapid progress in the last decade in optical technology and advances in relevant electronic and digital forms of imaging. Every chapter has been revised and expanded using new figures and photographs as appropriate, as well as extended bibliographies. New chapters include details of filters, measurements from images and the optical systems of digital cameras. Details of electronic and digital imaging have been integrated throughout. More information is given on topics such as aspherics, diffractive optics, ED glasses, image stabilization, optical technology, video projection and new types of lenses. A selection of the contents includes chapters on: optical theory, aberrations, auto focus, lens testing, depth of field, development of photographic lenses, general properties of lenses, wide-angle lenses, telephoto lenses, video lenses, viewfinder systems, camera movements, projection systems and 3-D systems.

Contents: Introduction. Meniscus Landscape Lenses; Portrait Lenses; Early Double Objectives; Optical Glass; The First Anastigmats; The Triplet Lens and Its Modifications; Meniscus Anastigmats; Telephoto Lenses; Reversed Telephoto Lenses; Varifocal and Zoom Lenses; Catadioptric (Mirror) Systems; Lens Attachments; Brief Biographies. Appendix: A Glossary of Optical Terms. Index. In this book, author Kingslake traces the historical development of the various types of lenses from Daguerre's invention of photography in 1839 through lenses commonly used today. Provides valuable information to anyone interested in the evolution of lens design.

Progressive lenses - Progressive lenses, also called progressive addition lenses, progressive power lenses, and varifocal lenses, are eyeglass lenses used to correct presbyopia and other disorders of accommodation. A gradient of increasing lens power is added to the correction for the other refraction error, going from nothing at the top of the lens to maximum magnification at the bottom of the lens.

Ophthalmic nerve - The ophthalmic nerve is one of the three branches of the trigeminal nerve, the fifth cranial nerve. Like the maxillary branch of the trigeminal nerve, the ophthalmic branch carries sensory fibers only.

Ophthalmic artery - The ophthalmic artery is a branch of the internal carotid artery which supplies branches to supply the eye and other structures in the orbit.

Visby lenses - The Visby lenses are ten lens-shaped rock crystals found in a viking grave in Gotland dating from the 10th century. Some of them are mounted in silver and may have been carried as a pendant, but others appear not to have been used as jewelry.

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