Magic Leap. has filed a patent for a near-eye display system using a stack of waveguides with pillars and diffractive optical elements to display images. The pillars provide thermal stability to resist deformation due to temperature changes, enhancing the viewer’s experience. GlobalData’s report on Magic Leap gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Magic Leap, Smart glasses was a key innovation area identified from patents. Magic Leap's grant share as of January 2024 was 51%. Grant share is based on the ratio of number of grants to total number of patents.

Near-eye display system with waveguides and diffractive optical elements

Source: United States Patent and Trademark Office (USPTO). Credit: Magic Leap Inc

The patent application (Publication Number: US20240036321A1) describes a near-eye display system that includes a stack of waveguides for displaying images using image light. The system comprises a first waveguide with a pillar, a second waveguide spaced apart from the first waveguide by the pillar, diffractive optical elements, and adhesive attaching the pillar to the second waveguide. The adhesive used has a specific viscosity at 25°C. Additionally, the system includes spacers along the perimeter of the first waveguide, a roughened top surface on the pillar, and pillars with specific transverse cross-sectional dimensions. The waveguides may have indentations accommodating the pillars, and diffractive optical elements for in-coupling and out-coupling image light.

Furthermore, the near-eye display system includes an eyepiece with a waveguide having at least one pillar and out-coupling optical elements to out-couple light within the waveguide. The system also features an overlying waveguide spaced from the first waveguide by the pillar, with the tip of the pillar made of a different composition than the rest of the optically transmissive body. The second composition of the pillar tip has a lower concentration of photoinitiator and may include materials like transparent materials, adhesion-promoting layers, or hydrophilic materials. The out-coupling optical elements may include diffractive gratings, and the pillar tip composition may contain an adhesion-promoting layer with a silane mixture. Overall, the system aims to improve the display quality and functionality of near-eye display systems through specific design elements and material compositions.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.