CREAL, a company that develops a technology for displaying light field for AR and VR headsets, has introduced a new video demonstrating the capabilities of their latest prototype headset VR. A new video demonstrates the ability to focus on an arbitrary distances and high resolution foveal region.
In many respects different from the displays used today in VR headsets and AR displays with light field generate an image that accurately reflects the way we see the light in the real world. In particular, the light field displays is supported as vergence and accommodation, two of the focusing mechanism of human visual system. Most headsets on the market today support only vergence (stereobitrate), but not accommodation (individual focus of the eye), which means that technically, the image gets stuck at a fixed depth-of-focus. Thanks to the display with a light box you can be focused at any depth, as in the real world.
Although Creal no plans to create its own headset, the company created a prototype to demonstrate its technology in the hope that other companies will prefer to use it in their headsets.
In the prototype VR headset Creal is used foveal architecture (two overlapping display on the eyes): a light field display with a resolution close to the resolution of the retina, which covers the Central 30 ° field of view, and a larger display with a low resolution (1600 × 1440, without light field), which fills the peripheral field of view of 100 °.
In the video through the lens, we can see clearly, as the focus shifts from one part of a scene with another. Creal says that the focus change occurs in the camera filming the scene. While some approaches to Varifocal displays using gaze tracking for continuous adjustment of the depth of focus of the display depending on where the user’s gaze, the light field is the depth of this scene, where the camera (and your eyes) are able to focus on any arbitrary depth without any of the above tracking sight.
In the video we also see that the Central part of the display (the part of the light field) is quite sharp compared to the rest. Creal saysRIT that this part of the display “is now approaching the resolution of the retina” and also works at a frequency of 240 Hz.
Although it is expected that the rendering of images that are required to power the display of the headset, it will be very expensive (mainly due to the need to generate a light field), the company States that the rendering technology is steadily improving and “close to the equivalent of the classic stereo rendering other VR headsets”.
Although the current prototype VR headset Creal very bulky, the company expects that by the end of 2022 it will be able to further reduce its display technology light field to something more reasonable. The company also adapt the technology for AR and believes that she may be petite to fit into a compact AR glasses.