Field of View Extension Method Based on the Blazed Metagrating Layer Applicable to Extended Reality

In the paper, we propose the blazed metagrating structure composed of nano-sized square pillars to be attached to the leap motion controller (LMC) sensor, so that the combined system can generate a larger interaction space. Using the Fourier modal method, we analyze that when the optical device, or the configuration of the blazed metagrating layer we designed, is applied on the LMC module, the field of view (FOV) from the combined system can be extended with a reasonable angle as well as sufficient optical efficiency. Without direct contact with the object, the proposed system can help support remote interaction between human and digital content, especially useful in domains such as hand gesture rehabilitation and extended reality (XR) applications.