Technology Overview


  • Patent-pending optics

  • IR or Visible Lights

  • Coded Beacons (high speed flashing for unique ID)

  • Low Cost

  • Low Processing and Operating Power

  • Low Latency

  • Privacy – Not a camera - No images taken or stored.


The Challenges We Solve


The Problem with Visual Slam

  • Uncontrolled environment (complex scenes,
    random lighting environments, motion blur)

  • Huge data pipeline (1 Megapixel camera at 50FPS generates
    >50Mbytes of data/second)


The Sixdof Solution

  • Concentrate only on bright and high contrast objects with shutters of <1ms

  • Image compression at optical domain

  • Small data sets allow SLAM iterations as rapidly as every 1ms

  • At 1KHz frame rates user movements are typically well below 1o angular and <1cm translational



Our Data Reduction Technique

new sensor.jpg

Our core IP involves compressing two dimensional images into one dimensional representation while conserving angular entropy. As illustrated with the curved dome slit over a linear CMOS sensor below, light from any elevation angle β arriving at a given azimuth angle α will be integrated at the same pixel, while light from different azimuth angles α will be mapped to a unique pixel on the sensor.

The result is an instantaneous 1-dimensional representation of the 2-dimensional image scene. Using 2 perpendicular sensors we can then reconstruct both the azimuth and elevation angles to all the lights in a scene with a fraction of the data bandwidth.

We have developed a custom toroidal compression lens which we are manufacturing via injection molding.


Toroid Lens Module Performance


  • Large field of view (>120 degrees in both axes)

  • High optical efficiency – large NA

  • Very high image resolution

  • Single element optic design

  • 1K pixel low-cost linear CMOS sensor

  • 0.5 mSec shutter or less

  • Up to 1KHz readout rate

  • At 8-bit quantization, still only 1MByte/sec
    of data per sensor


Summary – Unique Benefits


  • Uses existing room lighting as reference beacons

  • Low-cost, low-power and installation-free

  • Large field of view with very low data bandwidth

  • Tracking rates up to 1KHz

  • End-to-end latency (motion to absolute pose data) as low as 2ms

  • Minimal disruption to work site

  • Avoid Security and privacy issues of cameras

  • Flexible integration