Traduction de l’étape 11
Étape 11
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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.
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But metal makes a better heat sink, and the electronics and IR illumination (likely VCSEL devices) all produce heat.
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That pink stuff is a thermal pad to help transfer the IR rangefinder's heat into the aluminum frame.
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Metal also offers a stiffer mounting place to keep the optics stable and focused after their rigorous calibration.
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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.
[* 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 thermal |
+ | [* black] That pink stuff is a thermal pad to help transfer the IR rangefinder's heat 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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