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Stap 11
A cast magnesium block holds all the optics and sensors, and is surprisingly hefty for an HMD. The VR headsets we've taken apart all used lightweight plastic. But metal makes a better heat sink, and the electronics and IR illumination (likely VCSEL devices) all produce heat.
  • A cast magnesium block holds all the optics and sensors, and is surprisingly hefty for an HMD. The VR headsets we've taken apart all used lightweight plastic.

  • But metal makes a better heat sink, and the electronics and IR illumination (likely VCSEL devices) all produce heat.

  • That pink stuff is a thermal pad to help transfer the IR rangefinder's heat into the aluminum frame.

  • Metal also offers a stiffer mounting place to keep the optics stable and focused after their rigorous calibration.

  • But stiff isn't always best—some of these components are mounted with foam adhesive, which will be more forgiving as things flex when heated.

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