The HoloLens 2 lens is a transparent glass waveguide with nanoscale diffractive gratings. A tiny laser-based light engine generates the image, the waveguide traps and steers that light through the lens by internal reflection, and then other grating regions send it into the eye. The practical per-eye render size is 1440 by 936, and the system is designed to run at 60 hertz.
In order to develop HoloLens appz, one needs:
Windows ;(
Unity 2022.3 LTS (e.g. 2022.3.62f3) + Universal Windows Platform Build Support + Windows Build Support (IL2CPP)
Visual Studio + Visual Studio Installer + bunch of dependencies
OpenXR plugins
HoloLens 2 comes with an important strategic caveat: being a closed Microsoft product, its viability is in great extent dependent on Microsoft’s ecosystem and support lifecycle. Since Microsoft stopped producing HoloLens 2 in October 2024 and committed support only through December 31, 2027, HoloLens 2 should be best understood as a mature but discontinued residue of one highly specialized branch of technological evolution.