The AR/MR/VR tag groups resources that focus on optical technologies enabling augmented reality, mixed reality, and virtual reality devices. Content here explores how specialized lenses, waveguides, and imaging systems are designed to deliver wide fields of view, high resolution, and low distortion while keeping headsets compact and comfortable. Articles may discuss challenges such as minimizing chromatic aberration and vergence–accommodation conflict, managing stray light, and balancing image quality with manufacturability. The tag also touches on material selection, coatings, and mechanical packaging strategies that support lightweight, durable designs suitable for extended wear in consumer, industrial, and medical environments. For product developers and optical engineers working on smart glasses, head-mounted displays, or training simulators, these resources provide a high-level view of design trends and practical considerations in AR/MR/VR optics. Avantier’s capabilities in custom lens design, prototyping, and production help teams bring immersive concepts to market with optical performance tailored to their use cases.