CREAL

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CREAL is a company that makes displays for augmented reality headsets. Specifically, sequential light-field displays. Its displays are near-eye light field displays. CREAL has marketed displays as suitable for AR glasses.

CREAL had planned to make a fixed foveated display.[1]

One of CREAL's patents details the use of a 2D point light array as the light source that is lit up sequentially.[2] Each point light is a source of light such as an LED that has a pinhole mask.

CREAL's technology follows the work of Andrew Maimone in sequential light field displays.

CREAL's team included engineers from Intel's smart glasses project, as well as from Magic Leap.[3]

History[edit]

CREAL used DLP, then switched to LCOS. The switch was in part because LCOS can have its driving method controlled more directly.[4] DLP's drive algorithm is closed off by Texas Instruments.[4]

Display[edit]

CREAL has developed a small optical engine for light field display. It has 36 degree diagonal field of view.[5] The display surface has 91 percent transparency.[5]

CREAL AR prototype[edit]

The CREAL AR prototype is a prototype transparent display headset from CREAL.

Specifications[edit]

  • Angular resolution: about 40 pixels per degree[6]
  • Diagonal field of view: About 36 degrees[6]

Patents[edit]

  • US20240255762A1 - Near-eye sequential light-field projector with correct monocular depth cues[7]
  • US11960083B2 - Near-eye sequential light-field projector with correct monocular depth cues[8]
  • CA3172473A1 - Near-eye image projection system having foveated projection and expanded eye-box region[9]
  • US20210382307A1 - Light-field mixed reality system with correct monocular depth cues to a viewer[10]
  • WO2022175716A1 - Near-eye light-field display system having high efficiency and method of projecting a projection virtual pixel using the near-eye light-field display system[11]
  • EP4348335A1 - Light-field projector having a small form factor[12]
  • US20220404689A1 - Light-field virtual and mixed reality system having foveated projection [13]
  • US20230280586A1 - Near-eye image projection system and wearable device comprising said near-eye image projection system[14]
  • WO2022112818A1 - High-resolution light-field projector[15]
  • EP4252060A1 - High-resolution light-field projector

References[edit]

  1. ↑ Lang, Ben (2020-01-09). "Hands-on: CREAL is Shrinking Its Light-field Display for AR & VR Headsets". https://www.roadtovr.com/ces-2020-creal-light-field-shrinking-for-ar-vr-headsets/.
  2. ↑ https://patentimages.storage.googleapis.com/aa/cb/2b/78d7ba039783dc/EP3542206B1.pdf "The point-light array 28 is an array of point-light sources distributed on a two-dimensional plane."
  3. ↑ "Innovation bringing augmented reality to the highest level I CREAL's mission". 2024-09-10. https://creal.com/about/.
  4. ↑ 4.0 4.1 Guttag, Karl (2024-04-20). "Mixed Reality at CES & AR/VR/MR 2024 (Part 3 Display Devices)". https://kguttag.com/2024/04/20/mixed-reality-at-ces-ar-vr-mr-2024-part-3-display-devices/.
  5. ↑ 5.0 5.1 "The natural display of augmented reality I CREAL light-field display". 2024-03-05. https://creal.com/ar/.
  6. ↑ 6.0 6.1 Lang, Ben (2023-06-03). "Hands-on: CREAL's Light-field Display Brings a New Layer of Immersion to AR". https://www.roadtovr.com/creal-light-field-display-new-immersion-ar/2/.
  7. ↑ "Near-eye sequential light-field projector with correct monocular depth cues". 2024-03-29. https://patents.google.com/patent/US20240255762A1/en.
  8. ↑ "Near-eye sequential light-field projector with correct monocular depth cues". 2017-09-19. https://patents.google.com/patent/US11960083B2/en.
  9. ↑ "Near-eye image projection system having foveated projection and expanded eye-box region". 2020-04-14. https://patents.google.com/patent/CA3172473A1/en.
  10. ↑ "Light-field mixed reality system with correct monocular depth cues to a viewer". 2019-12-20. https://patents.google.com/patent/US20210382307A1/.
  11. ↑ "Near-eye light-field display system having high efficiency and method of projecting a projection virtual pixel using the near-eye light-field display system". 2021-02-18. https://patents.google.com/patent/WO2022175716A1/.
  12. ↑ "Light-field projector having a small form factor". 2021-06-03. https://patents.google.com/patent/EP4348335A1/en.
  13. ↑ "Light-field virtual and mixed reality system having foveated projection". 2020-10-26. https://patents.google.com/patent/US20220404689A1/en.
  14. ↑ "Near-eye image projection system and wearable device comprising said near-eye image projection system". 2020-08-20. https://patents.google.com/patent/US20230280586A1/en.
  15. ↑ "High-resolution light-field projector". 2020-11-24. https://patents.google.com/patent/WO2022112818A1/en.
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