Open Source AR Headset

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Basics

- VR or Virtual Reality

- A Head Mounted Display with 6 Degrees of Freedom Tracking

- Creates a Steroscopic 3D Image that fills most of the users FOV using two small displays and lenses (I.E one for each eye)

- Could also use what is called a virtual retnia display, which essentially uses two projectors to project images directy into your eyes, this is more complex though

- Unlike the Open Source VR Headset This Display is Transparent. This allows the device to overlay a digital object, or useful information over the real life existing one without obstructing it, using its motion tracking + depth sensing hardware.




Used For

- Open Source AR CAD

- Open Source AR Product Demo Software

- Open Source AR Artistry Suite

- AR Content Consumption



Industry Standards

- Meta 2 Developer Kit

- Microsoft Hololens



Existing Open Source Designs

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Minimum Viable Product

- 90 FPS 1440p Minimum in order to minimize the "Screen Door Effect" and Motion Sickness

- Feild of View greater than or equal to 90 degrees

- PSVR/Halo style Head Mount

- Modular Design

- IPD + Focus Adjustments either by manual adjustment or by inputting measurements which tell the servos to do the rest

- Room For Glasses

- Optional Eye Tracking Module

- Wired or Wireless Operation



Basic Design

Display Module

- 2x (1 per eye)

- 90 FPS 1440p Minimum, though 4k 120hz would be nice

- OLED would also be preferable


Lens + Lens Adjustment Module

- Has the two lenses (one for each eye), as well as the mechanism for adjusting them

- They are adjusted using servo motors

- These are controlled either by an inserted measurement, or by using dials on the headset itself



Eye Tracking Module

- This is optional ( due to the privacy concerns)

- It uses IR LEDs as well as IR Cameras to track pupil movment, and thus can do gaze as well as blinking tracking

- Allows for foevated rendering as well as greater immersion


Joint Module

- Allows the display module to be flipped 90 degrees up


Head Strap Module

- PSVR Halo / rEvolve Style Mount

- Also has Removable Fabric Covered Memory Foam Inserts (Use a slide in dovetail joint)


IO Module

- Uses one or more USB Type C, or USB-C + Thunderbolt 3, Cables + Ports to power the headset as well send data to and from it and the PC


Tracking Module

- Uses inside out, outside in, or a combination of the two to tract movment of the Users Head, and change the display info accordingly


Wireless Module

- Uses Wifi, or a custom signal, to replace the wires of the IO Module with a wireless connection


Battery Module

- Used only with the Wireless Module

- Is a essentially a wearable small Open Source Mobile PC Power Supply Unit



BOM

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See Also

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Useful Links

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