Photolithographic technologies in the production of optical parts . The textbook, created by the team of authors, is a unique publication that will become an indispensable assistant for students, graduate students and specialists working in the field of optics and photonics. This guide immerses the reader in the world of high technology, where photolithography plays a key role in the creation of optical components used in a variety of industries - from telecommunications to medicine. The book is based on an in-depth analysis of photolithographic processes that allow you to create parts with high accuracy and complex geometry. The authors carefully consider the stages of photolithography, starting with the preparation of substrates and ending with the processes of etching and metallization. Each chapter is filled with relevant information that will help readers not only to understand the theoretical aspects, but also to master the practical skills necessary to work in laboratories and on production sites. Who can like this tutorial? First of all, it will be useful for students of technical universities studying optics, materials science and engineering technologies . The book will also interest graduate students and young scientists seeking to deepen their knowledge in the field of photonics and the development of new optical devices. Specialists working in the production of optical parts will find in the manual relevant solutions and recommendations that will help increase the efficiency of their work. The topics raised in the book cover a wide range of issues related to photolithography. The authors discuss not only technological aspects, but also economic and environmental problems associated with the production of optical components. This makes the manual not just educational material, but a real guide to modern challenges and achievements in the field of optics. Readers will be able to learn about the latest trends in the development of photolithographic technologies, as well as new materials and methods that open new horizons for the creation of high-quality optical products. The style of the authors is distinguished by clarity and accessibility of the presentation, which allows even complex technical concepts to be perceived easily and with interest. Each chapter is provided with illustrations and diagrams that help to visualize the processes described and make the material more visual. This is especially important for students and practitioners who learn not only from theory but also from practice. The book also includes examples of real-world projects and research, allowing readers to see how theoretical knowledge is applied in real-world settings. The book "Photolithographic technologies in the production of optical parts" will be an important contribution to the library of everyone who is interested in modern technologies and their application in optics. It can be useful not only for students and professionals, but also for teachers who are looking for quality materials for their courses. If you are looking for literature that combines theory and practice, current research and innovative approaches, this guide is exactly what you need. Do not miss the opportunity to immerse yourself in the world of photolithographic technologies and discover new horizons in the production of optical parts. This book will be your reliable companion on the way to professional growth and new achievements in the field of optics and photonics