George Asimellis – författare

This second volume of the series Lectures in Optics develops a thorough presentation of geometrical optics effects. The book begins by discussing refraction and reflection off single surfaces, both flat and spherical. Presented next are the essential building elements, optical power and beam vergence, which are paramount in imaging because the incident vergence is added to the element’s power to produce the vergence leaving the optical element. Imaging definitions and formulation are covered next, followed by the power configurations and imaging arrangements possible with a single element, a single lens, and a mirror for real and virtual objects. Next, two more parameters are introduced: the extent of an element along the optical axis (thick lenses and lens systems) and the extent of an element perpendicular to the optical axis (stops and pupils). The way image quality is affected by the transverse restriction of light is then discussed, including resolution and image blur. Finally, the book introduces the concepts of optical aberrations as a consequence of a violation of the paraxial approximations. This book is suitable for all Geometrical Optics courses at college, graduate school, or professional school levels, such as physics, engineering, visual science, or optometry programs. Comprehensive practice examples, exercises, and quizzes throughout the chapters reinforce an understanding of the covered material.

This fourth volume in the series Lectures in Optics provides comprehensive coverage of Visual Optics, which is the field of optics as applied to the function of the eye, a magnificent and highly complicated optical system. The optics part of vision in a 'well-performing' eye pertains to the effects responsible for formation and initial detection of the retinal image—the picture of the world as it is projected onto the photosensitive layer of the eye, the retina.The book presents the necessary concepts and definitions that explain retinal image properties, including aspects such as visual acuity and color perception. It discusses the optics of the eye in the presence of refractive errors such as myopia, hyperopia, and astigmatism, certain limitations to vision such as accommodation and near vision, and effects of aging on vision such as presbyopia and low vision. Finally, chapters devoted to ophthalmic optics and prismatic effects provide in-depth coverage of the optics involved in the correction of refractive vision disorders.