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Traduction de l’étape 11

Étape 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.

Un bloc de magnésium moulé maintient le bloc optique et les capteurs. Il est étonnamment lourd pour un visiocasque. Les casques RV que nous avons déjà démontés utilisaient du plastique léger.

Le métal dissipe cependant mieux la chaleur. Et toute cette électronique et l'illumination infrarouge (probablement un dispositif CCESL), ça chauffe.

Le machin rose est de la pâte thermique qui aide à dissiper la chaleur du télémètre infrarouge.

De plus, un support en métal est plus rigide et permet d'assurer la stabilité du bloc optique après que la focalisation ait été exactement calibrée.

Mais la rigidité n'est pas toujours un atout. Quelques composants sont fixés avec de la mousse adhésive, ce qui est plus pratique quand les choses se déforment sous l'effet de la chaleur.

[* black] A cast magnesium block holds all the optics and sensors, and is surprisingly hefty for an HMD. The [guide|106064|VR|new_window=true] [guide|60612|headsets|new_window=true] we've taken apart all used lightweight plastic.
[* black] But metal makes a better heat sink, and the electronics and IR illumination (likely [https://en.wikipedia.org/wiki/Vertical-cavity_surface-emitting_laser|VCSEL|new_window=true] devices) all produce heat.
[* black] That pink stuff is a thermal pastepad to help dissipatetransfer the IR rangefinder's heatheat into the aluminum frame.
[* black] That pink stuff is a thermal pastepad to help dissipatetransfer the IR rangefinder's heatheat into the aluminum frame.
[* black] Metal also offers a stiffer mounting place to keep the optics stable and focused after their rigorous calibration.
[* black] 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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