The book "Concentric optical systems and their application in optical instrumentation" by Popov is a fascinating and in-depth study that opens the world of optics and optical technologies to the reader. In it, the author not only shares his knowledge and experience, but also offers a unique view on the use of concentric optical systems in modern instrument-making. This work will be of interest to both specialists in the field of optics and students seeking to deepen their knowledge in this field. Popov is a well-known scientist and practitioner whose research in the field of optics and optical instrumentation has been recognized both in Russia and abroad. His writing style combines scientific rigor and accessibility, making complex concepts understandable to a wide audience. In his other works, he also touches on topics related to optical systems, their design and application in various industries, which allows the reader to see the whole picture and relationships in this complex but fascinating field. The book covers many aspects related to concentric optical systems. The author examines in detail their design features, optical characteristics and advantages that they can offer in comparison with other types of optical systems. Readers will be able to learn about the different methods of designing and optimizing such systems, as well as how they can be effectively integrated into modern optical devices. This knowledge will be useful not only to engineers and developers, but also to researchers engaged in research in the field of optics. The topics raised in the book go beyond purely technical aspects. Popov also addresses issues related to innovation in optical instrumentation and discusses how new technologies can change approaches to the design and use of optical systems. This makes the book relevant for those interested in the latest trends in science and technology, as well as for students studying optics and related disciplines. The book will be especially interesting for those who work or study in the field of physics, engineering, as well as everyone who is fond of optical technologies. It is suitable for both professionals and students seeking to gain a deeper understanding of the subject. Thanks to a clear presentation and rich illustrative material, readers will be able to easily assimilate complex concepts and apply them in practice. If you are looking for literature that will help you understand modern optical systems and their applications, then "Concentric optical systems and their application in optical instrumentation" will be an excellent choice. This book will not only expand your knowledge, but also inspire new ideas and projects in the field of optics. Do not miss the opportunity to immerse yourself in the exciting world of optical technology with Popov and his outstanding work