Holoeye at Display Week 2024, micro displays, adaptive micro-optics, Spatial Light Modulators & more

Holoeye, a Berlin-based company specializing in various technologies revolving around liquid crystal and silicon micro displays, showcased its innovations at Display Week 2024. One of their key focuses is adapting AOS (amplitude modulation) displays for phase modulation, enabling the modulation of light phases. This facilitates the creation and reconstruction of holograms, primarily for technical applications like optical tweezers and optical switching in telecommunications. Their technology utilizes monochromatic lasers for enhanced performance, especially in applications requiring precise wavelength-dependent modulation. While they also offer solutions for conventional projection displays using RGB sequences, their primary niche lies in phase-modulating devices termed Spatial Light Modulators (SLMs).
Their manufacturing process involves creating backplanes with micro wires and filling them with liquid crystal (LC) material to form cells, culminating in custom packaging for specialized applications like telecommunications. They're also adapting micro OLED backplanes for use with LC technology, aiming for smaller pixels to achieve unique phase modulation capabilities. Despite being in the early stages, they foresee their technology being potentially more affordable and flexible for various applications, including AR (augmented reality).
Their demonstrations included color hologram reconstruction using RGB lasers, emphasizing their unique capability to generate color holograms in the far field. They also showcased high-speed displays running at 120 Hz, deflected optics for static lenses, and complex structures for beam shaping. These technologies find applications in areas like 3D sensing, where reference patterns are crucial for capturing movements and objects accurately.
Looking ahead, Holoeye sees potential roles in future holographic products, although they temper expectations regarding achieving Star Wars-style holograms due to physical constraints. They believe their technology could enhance conventional projection systems by enabling different focus areas, enhancing the perception of 3D effects. However, they envision their technology being more of an additional component rather than the main imaging source, possibly finding use in heads-up displays and augmenting conventional projections with added depth and interactivity.
Regarding the Eurovision holograms, they suggest that transparent measures on stages are used for projection, although they're not deeply involved in such applications. They anticipate a considerable timeline before their technology becomes commonplace in consumer settings, suggesting it may serve as an enhancement rather than a primary imaging technology. Despite their modest size, Holoeye is continuously growing and welcomes visitors to their office in Berlin, which originated as a private company stemming from university research.
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