Accurate Eye Imitation for VR HMD Testing

When it comes to VR/AR HMD objective testing, you need an “eye” which is much more than simply a digital camera. Besides having the entrance pupil, focal length and aperture similar to those of a human eye to see like a human eye, the imitation must be properly perceived by the eye tracking modules.

Meet the First in the World accurate eye imitation created by Almalence.

Not only sees like an eye, but also looks like an eye

Using a special compound developed at Almalence lab, we managed to create an imitation of the iris that looks correctly in both visible and infrared light, which makes the eye imitation correctly detected by eye tracking devices. To make the imitation totally indistinguishable from an eye of a human being, the imitation is made to give proper reflections and glint locations.

Whist having all the above properties, the imitation has a cover glass made of an optical-quality transparent material, which does not distort the light passing to the camera. The camera, in its turn, has the entrance pupil properly positioned within the “eye” using special micro-mount.

With the above features together, we have achieved a perfect “two-way immersion” — the eye imitation not only sees exactly what a human eye would see, it also looks exactly as a human eye to the eye tracker.

The eye imitation will be used for better optical profiling of VR HMDs to achieve the highest possible quality with Almalence Digital Lens technology and for accurate objective testing of VR/AR HMD picture quality.

This eye does not lie

Almalence Digital Lens technology enables high resolution wide FoV VR HMDs

Digital Lens addresses the smear and aberrations inherent to thin and lightweight VR HMD optics.

First objective quality measurements performed with a demo based on HTC Vive showed up to 2.7 times effective resolution improvement and suppression of chromatic aberrations even at the edges of field of view.

The technology opens the door for high resolution displays, solving the problem of optical performance which does not allow to harness the full advantage of extra display resolution. It also enables wide field of view HMDs where any acceptable picture quality at wide angles cannot be achieved with an optical design alone.
Aberration and MTF charts from the report on quality measurement, comparing HTC Vive built-in lens correction to Almalence Digital Lens:

MTF50, HTC Vive with/without Almalence DLVR

MTF50, HTC Vive with/without Almalence DLVR


Almalence DLVR removes chromatic aberrations in HTC Vive even at the edges of field of view

Almalence DLVR removes chromatic aberrations in HTC Vive even at the edges of field of view


HTC Vive with/without Almalence DLVR, slanted edge chart for Imatest measurements

HTC Vive with/without Almalence DLVR, slanted edge chart for Imatest measurements

Meet us at Mobile World Congress 2018

This year we will bring to MWC:

  • A live demo of our breakthrough VR quality improvement technology. An enabler for next generation high resolution HMDs, Almalence DLVR technology solves the problem of thin and lightweight optics quality without adding extra size or weight to VR/AR HMDs
  • Latest generation of mobile image and video improvement solutions. High resolution, lossless zoom, better low light performance and higher dynamic range plus image stabilization altogether in a single solution, available for both still image capturing and video/preview!
  • Next generation image and video improvement technologies to be brought to the market in 2018

Demo by invitation only. Please contact us to schedule a meeting.