Zhitong Financial APP has learned that WIMI.US has obtained a patent for a head-mounted display for holographic AR systems. This patent is the result of independent research and development of the company.

A head-mounted display for holographic AR system is proposed in this patent, which can realize the sense of immersion required by holographic applications, and can send head movement data and external image information to the host computer. The holographic data acquisition and transmission module includes a holographic data acquisition and transmission module and a micro-display module. The holographic data acquisition and transmission module includes an image sensor, a gyroscope, an accelerometer, a Bluetooth module and a processor. The holographic data acquisition and transmission module completes the acquisition of the head motion data and the holographic image information of the real scene, and transmits the collected holographic data to the micro-display module for further data processing. The micro-display module includes a micro-control module, which is used as the holographic AR data output of the system.

This patent uses a holographic pupil expander to effectively expand the holographic exit pupil in two dimensions, which can not only meet the visual requirements of human eyes, but also improve the performance of the system and realize portability. This patent calculates the physical law of the expansion of the holographic exit pupil by using the holographic pupil expansion algorithm technology of the retinal scanning display (RSD) and the semi-permeable film array planar waveguide, and obtains an effective dynamic algorithm for expanding the holographic exit pupil. The physical mechanism of limiting the exit pupil of holography is calculated from the point of view of optical system design. The diffraction integral transformation method is used to process the diffraction grating holographic pupil expander and the microlens array holographic pupil expander to provide data support for the motion of the holographic pupil expander. Through the use of optical simulation algorithm modeling, dynamic operation of hexagonal arrangement of single lens array and double lens array of holographic pupil expansion trajectory, combined with double lens array to achieve color display RSD holographic pupil expansion of the accurate algorithm, and finally achieve immersive high definition holographic AR data imaging.

The patent uses the head-mounted display optical system to be generated by computer, and the output of the holographic AR image source is digitized and holographic imaging in the user's field of vision, so as to realize the simulation technology to reproduce the specific environment. The patent immersive head-mounted AR display technology has the advantages of large field of view, low power consumption, wearable, modularization, stereoscopic display, high degree of customization, etc., and will be widely used in telemedicine, industrial construction, environmental simulation, traffic indication, virtual education, holographic communication, 3D printing, driving assistance and so on.