EyeTrackVR-Docs/getting_started/led_safety.html
2024-08-26 01:07:16 +00:00

25 lines
44 KiB
HTML
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!DOCTYPE html>
<html lang="en-US" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>V3 Hardware Safety Outline and Exposure Numbers: | EyeTrackVR Docs</title>
<meta name="description" content="Official documentation for EyeTrackVR. Fully open-source and affordable VR eye tracking platform.">
<link rel="preload stylesheet" href="/assets/style.1d0676ce.css" as="style">
<script type="module" src="/assets/app.34b7b746.js"></script>
<link rel="preload" href="/assets/inter-roman-latin.2ed14f66.woff2" as="font" type="font/woff2" crossorigin="">
<link rel="modulepreload" href="/assets/chunks/framework.ddd86a08.js">
<link rel="modulepreload" href="/assets/chunks/theme.4b09c48b.js">
<link rel="modulepreload" href="/assets/chunks/index.cc3a1123.js">
<link rel="modulepreload" href="/assets/getting_started_led_safety.md.801786d6.lean.js">
<script async src="/src/assets/diy.js"></script>
<script id="check-dark-mode">(()=>{const e=localStorage.getItem("vitepress-theme-appearance")||"auto",a=window.matchMedia("(prefers-color-scheme: dark)").matches;(!e||e==="auto"?a:e==="dark")&&document.documentElement.classList.add("dark")})();</script>
<script id="check-mac-os">document.documentElement.classList.toggle("mac",/Mac|iPhone|iPod|iPad/i.test(navigator.platform));</script>
</head>
<body>
<div id="app"><div class="Layout" data-v-527a0310><!--[--><!--]--><!--[--><span tabindex="-1" data-v-b22defb4></span><a href="#VPContent" class="VPSkipLink visually-hidden" data-v-b22defb4> Skip to content </a><!--]--><!----><header class="VPNav" data-v-527a0310 data-v-a46e73f0><div class="VPNavBar has-sidebar" data-v-a46e73f0 data-v-dfeca417><div class="container" data-v-dfeca417><div class="title" data-v-dfeca417><div class="VPNavBarTitle has-sidebar" data-v-dfeca417 data-v-2d6ff155><a class="title" href="/" data-v-2d6ff155><!--[--><!--]--><!--[--><!--[--><!--[--><img class="VPImage dark logo" src="/logo.svg" alt="EyeTrackVR Logo" data-v-4d414b82><!--]--><!--[--><img class="VPImage light logo" src="/logo_light.png" alt="EyeTrackVR Logo" data-v-4d414b82><!--]--><!--]--><!--]--><!--[-->EyeTrackVR Docs<!--]--><!--[--><!--]--></a></div></div><div class="content" data-v-dfeca417><div class="curtain" data-v-dfeca417></div><div class="content-body" data-v-dfeca417><!--[--><!--]--><div class="VPNavBarSearch search" data-v-dfeca417><!--[--><!----><div id="local-search"><button type="button" class="DocSearch DocSearch-Button" aria-label="Search"><span class="DocSearch-Button-Container"><svg class="DocSearch-Search-Icon" width="20" height="20" viewBox="0 0 20 20" aria-label="search icon"><path d="M14.386 14.386l4.0877 4.0877-4.0877-4.0877c-2.9418 2.9419-7.7115 2.9419-10.6533 0-2.9419-2.9418-2.9419-7.7115 0-10.6533 2.9418-2.9419 7.7115-2.9419 10.6533 0 2.9419 2.9418 2.9419 7.7115 0 10.6533z" stroke="currentColor" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"></path></svg><span class="DocSearch-Button-Placeholder">Search</span></span><span class="DocSearch-Button-Keys"><kbd class="DocSearch-Button-Key"></kbd><kbd class="DocSearch-Button-Key">K</kbd></span></button></div><!--]--></div><nav aria-labelledby="main-nav-aria-label" class="VPNavBarMenu menu" data-v-dfeca417 data-v-c6c3e6d4><span id="main-nav-aria-label" class="visually-hidden" data-v-c6c3e6d4>Main Navigation</span><!--[--><!--[--><div class="VPFlyout VPNavBarMenuGroup" data-v-c6c3e6d4 data-v-1a2ceba0><button type="button" class="button" aria-haspopup="true" aria-expanded="false" data-v-1a2ceba0><span class="text" data-v-1a2ceba0><!----><span data-v-1a2ceba0>About</span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="text-icon" data-v-1a2ceba0><path d="M12,16c-0.3,0-0.5-0.1-0.7-0.3l-6-6c-0.4-0.4-0.4-1,0-1.4s1-0.4,1.4,0l5.3,5.3l5.3-5.3c0.4-0.4,1-0.4,1.4,0s0.4,1,0,1.4l-6,6C12.5,15.9,12.3,16,12,16z"></path></svg></span></button><div class="menu" data-v-1a2ceba0><div class="VPMenu" data-v-1a2ceba0 data-v-7bffa9cd><div class="items" data-v-7bffa9cd><!--[--><!--[--><div class="VPMenuLink" data-v-7bffa9cd data-v-71c5411b><a class="VPLink link" href="/about" data-v-71c5411b><!--[-->About Us<!--]--></a></div><!--]--><!--[--><div class="VPMenuLink" data-v-7bffa9cd data-v-71c5411b><a class="VPLink link" href="/dev_roadmap" data-v-71c5411b><!--[-->Development Road Map<!--]--></a></div><!--]--><!--]--></div><!--[--><!--]--></div></div></div><!--]--><!--[--><a class="VPLink link VPNavBarMenuLink" href="/contact" tabindex="0" data-v-c6c3e6d4 data-v-97d30ef6><!--[--><span data-v-97d30ef6>Contact</span><!--]--></a><!--]--><!--]--></nav><!----><div class="VPNavBarAppearance appearance" data-v-dfeca417 data-v-f774fc1d><button class="VPSwitch VPSwitchAppearance" type="button" role="switch" title="toggle dark mode" aria-checked="false" data-v-f774fc1d data-v-fdee46ce data-v-0b5e260c><span class="check" data-v-0b5e260c><span class="icon" data-v-0b5e260c><!--[--><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="sun" data-v-fdee46ce><path d="M12,18c-3.3,0-6-2.7-6-6s2.7-6,6-6s6,2.7,6,6S15.3,18,12,18zM12,8c-2.2,0-4,1.8-4,4c0,2.2,1.8,4,4,4c2.2,0,4-1.8,4-4C16,9.8,14.2,8,12,8z"></path><path d="M12,4c-0.6,0-1-0.4-1-1V1c0-0.6,0.4-1,1-1s1,0.4,1,1v2C13,3.6,12.6,4,12,4z"></path><path d="M12,24c-0.6,0-1-0.4-1-1v-2c0-0.6,0.4-1,1-1s1,0.4,1,1v2C13,23.6,12.6,24,12,24z"></path><path d="M5.6,6.6c-0.3,0-0.5-0.1-0.7-0.3L3.5,4.9c-0.4-0.4-0.4-1,0-1.4s1-0.4,1.4,0l1.4,1.4c0.4,0.4,0.4,1,0,1.4C6.2,6.5,5.9,6.6,5.6,6.6z"></path><path d="M19.8,20.8c-0.3,0-0.5-0.1-0.7-0.3l-1.4-1.4c-0.4-0.4-0.4-1,0-1.4s1-0.4,1.4,0l1.4,1.4c0.4,0.4,0.4,1,0,1.4C20.3,20.7,20,20.8,19.8,20.8z"></path><path d="M3,13H1c-0.6,0-1-0.4-1-1s0.4-1,1-1h2c0.6,0,1,0.4,1,1S3.6,13,3,13z"></path><path d="M23,13h-2c-0.6,0-1-0.4-1-1s0.4-1,1-1h2c0.6,0,1,0.4,1,1S23.6,13,23,13z"></path><path d="M4.2,20.8c-0.3,0-0.5-0.1-0.7-0.3c-0.4-0.4-0.4-1,0-1.4l1.4-1.4c0.4-0.4,1-0.4,1.4,0s0.4,1,0,1.4l-1.4,1.4C4.7,20.7,4.5,20.8,4.2,20.8z"></path><path d="M18.4,6.6c-0.3,0-0.5-0.1-0.7-0.3c-0.4-0.4-0.4-1,0-1.4l1.4-1.4c0.4-0.4,1-0.4,1.4,0s0.4,1,0,1.4l-1.4,1.4C18.9,6.5,18.6,6.6,18.4,6.6z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="moon" data-v-fdee46ce><path d="M12.1,22c-0.3,0-0.6,0-0.9,0c-5.5-0.5-9.5-5.4-9-10.9c0.4-4.8,4.2-8.6,9-9c0.4,0,0.8,0.2,1,0.5c0.2,0.3,0.2,0.8-0.1,1.1c-2,2.7-1.4,6.4,1.3,8.4c2.1,1.6,5,1.6,7.1,0c0.3-0.2,0.7-0.3,1.1-0.1c0.3,0.2,0.5,0.6,0.5,1c-0.2,2.7-1.5,5.1-3.6,6.8C16.6,21.2,14.4,22,12.1,22zM9.3,4.4c-2.9,1-5,3.6-5.2,6.8c-0.4,4.4,2.8,8.3,7.2,8.7c2.1,0.2,4.2-0.4,5.8-1.8c1.1-0.9,1.9-2.1,2.4-3.4c-2.5,0.9-5.3,0.5-7.5-1.1C9.2,11.4,8.1,7.7,9.3,4.4z"></path></svg><!--]--></span></span></button></div><div class="VPSocialLinks VPNavBarSocialLinks social-links" data-v-dfeca417 data-v-08b35e6f data-v-f2234a39><!--[--><a class="VPSocialLink no-icon" href="https://github.com/EyeTrackVR" aria-label="github" target="_blank" rel="noopener" data-v-f2234a39 data-v-efc53bd4><svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>GitHub</title><path d="M12 .297c-6.63 0-12 5.373-12 12 0 5.303 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61C4.422 18.07 3.633 17.7 3.633 17.7c-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 22.092 24 17.592 24 12.297c0-6.627-5.373-12-12-12"/></svg></a><a class="VPSocialLink no-icon" href="https://discord.gg/kkXYbVykZX" aria-label="discord" target="_blank" rel="noopener" data-v-f2234a39 data-v-efc53bd4><svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>Discord</title><path d="M20.317 4.3698a19.7913 19.7913 0 00-4.8851-1.5152.0741.0741 0 00-.0785.0371c-.211.3753-.4447.8648-.6083 1.2495-1.8447-.2762-3.68-.2762-5.4868 0-.1636-.3933-.4058-.8742-.6177-1.2495a.077.077 0 00-.0785-.037 19.7363 19.7363 0 00-4.8852 1.515.0699.0699 0 00-.0321.0277C.5334 9.0458-.319 13.5799.0992 18.0578a.0824.0824 0 00.0312.0561c2.0528 1.5076 4.0413 2.4228 5.9929 3.0294a.0777.0777 0 00.0842-.0276c.4616-.6304.8731-1.2952 1.226-1.9942a.076.076 0 00-.0416-.1057c-.6528-.2476-1.2743-.5495-1.8722-.8923a.077.077 0 01-.0076-.1277c.1258-.0943.2517-.1923.3718-.2914a.0743.0743 0 01.0776-.0105c3.9278 1.7933 8.18 1.7933 12.0614 0a.0739.0739 0 01.0785.0095c.1202.099.246.1981.3728.2924a.077.077 0 01-.0066.1276 12.2986 12.2986 0 01-1.873.8914.0766.0766 0 00-.0407.1067c.3604.698.7719 1.3628 1.225 1.9932a.076.076 0 00.0842.0286c1.961-.6067 3.9495-1.5219 6.0023-3.0294a.077.077 0 00.0313-.0552c.5004-5.177-.8382-9.6739-3.5485-13.6604a.061.061 0 00-.0312-.0286zM8.02 15.3312c-1.1825 0-2.1569-1.0857-2.1569-2.419 0-1.3332.9555-2.4189 2.157-2.4189 1.2108 0 2.1757 1.0952 2.1568 2.419 0 1.3332-.9555 2.4189-2.1569 2.4189zm7.9748 0c-1.1825 0-2.1569-1.0857-2.1569-2.419 0-1.3332.9554-2.4189 2.1569-2.4189 1.2108 0 2.1757 1.0952 2.1568 2.419 0 1.3332-.946 2.4189-2.1568 2.4189Z"/></svg></a><!--]--></div><div class="VPFlyout VPNavBarExtra extra" data-v-dfeca417 data-v-47bb42ad data-v-1a2ceba0><button type="button" class="button" aria-haspopup="true" aria-expanded="false" aria-label="extra navigation" data-v-1a2ceba0><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="icon" data-v-1a2ceba0><circle cx="12" cy="12" r="2"></circle><circle cx="19" cy="12" r="2"></circle><circle cx="5" cy="12" r="2"></circle></svg></button><div class="menu" data-v-1a2ceba0><div class="VPMenu" data-v-1a2ceba0 data-v-7bffa9cd><!----><!--[--><!--[--><!----><div class="group" data-v-47bb42ad><div class="item appearance" data-v-47bb42ad><p class="label" data-v-47bb42ad>Appearance</p><div class="appearance-action" data-v-47bb42ad><button class="VPSwitch VPSwitchAppearance" type="button" role="switch" title="toggle dark mode" aria-checked="false" data-v-47bb42ad data-v-fdee46ce data-v-0b5e260c><span class="check" data-v-0b5e260c><span class="icon" data-v-0b5e260c><!--[--><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="sun" data-v-fdee46ce><path d="M12,18c-3.3,0-6-2.7-6-6s2.7-6,6-6s6,2.7,6,6S15.3,18,12,18zM12,8c-2.2,0-4,1.8-4,4c0,2.2,1.8,4,4,4c2.2,0,4-1.8,4-4C16,9.8,14.2,8,12,8z"></path><path d="M12,4c-0.6,0-1-0.4-1-1V1c0-0.6,0.4-1,1-1s1,0.4,1,1v2C13,3.6,12.6,4,12,4z"></path><path d="M12,24c-0.6,0-1-0.4-1-1v-2c0-0.6,0.4-1,1-1s1,0.4,1,1v2C13,23.6,12.6,24,12,24z"></path><path d="M5.6,6.6c-0.3,0-0.5-0.1-0.7-0.3L3.5,4.9c-0.4-0.4-0.4-1,0-1.4s1-0.4,1.4,0l1.4,1.4c0.4,0.4,0.4,1,0,1.4C6.2,6.5,5.9,6.6,5.6,6.6z"></path><path d="M19.8,20.8c-0.3,0-0.5-0.1-0.7-0.3l-1.4-1.4c-0.4-0.4-0.4-1,0-1.4s1-0.4,1.4,0l1.4,1.4c0.4,0.4,0.4,1,0,1.4C20.3,20.7,20,20.8,19.8,20.8z"></path><path d="M3,13H1c-0.6,0-1-0.4-1-1s0.4-1,1-1h2c0.6,0,1,0.4,1,1S3.6,13,3,13z"></path><path d="M23,13h-2c-0.6,0-1-0.4-1-1s0.4-1,1-1h2c0.6,0,1,0.4,1,1S23.6,13,23,13z"></path><path d="M4.2,20.8c-0.3,0-0.5-0.1-0.7-0.3c-0.4-0.4-0.4-1,0-1.4l1.4-1.4c0.4-0.4,1-0.4,1.4,0s0.4,1,0,1.4l-1.4,1.4C4.7,20.7,4.5,20.8,4.2,20.8z"></path><path d="M18.4,6.6c-0.3,0-0.5-0.1-0.7-0.3c-0.4-0.4-0.4-1,0-1.4l1.4-1.4c0.4-0.4,1-0.4,1.4,0s0.4,1,0,1.4l-1.4,1.4C18.9,6.5,18.6,6.6,18.4,6.6z"></path></svg><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="moon" data-v-fdee46ce><path d="M12.1,22c-0.3,0-0.6,0-0.9,0c-5.5-0.5-9.5-5.4-9-10.9c0.4-4.8,4.2-8.6,9-9c0.4,0,0.8,0.2,1,0.5c0.2,0.3,0.2,0.8-0.1,1.1c-2,2.7-1.4,6.4,1.3,8.4c2.1,1.6,5,1.6,7.1,0c0.3-0.2,0.7-0.3,1.1-0.1c0.3,0.2,0.5,0.6,0.5,1c-0.2,2.7-1.5,5.1-3.6,6.8C16.6,21.2,14.4,22,12.1,22zM9.3,4.4c-2.9,1-5,3.6-5.2,6.8c-0.4,4.4,2.8,8.3,7.2,8.7c2.1,0.2,4.2-0.4,5.8-1.8c1.1-0.9,1.9-2.1,2.4-3.4c-2.5,0.9-5.3,0.5-7.5-1.1C9.2,11.4,8.1,7.7,9.3,4.4z"></path></svg><!--]--></span></span></button></div></div></div><div class="group" data-v-47bb42ad><div class="item social-links" data-v-47bb42ad><div class="VPSocialLinks social-links-list" data-v-47bb42ad data-v-f2234a39><!--[--><a class="VPSocialLink no-icon" href="https://github.com/EyeTrackVR" aria-label="github" target="_blank" rel="noopener" data-v-f2234a39 data-v-efc53bd4><svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>GitHub</title><path d="M12 .297c-6.63 0-12 5.373-12 12 0 5.303 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61C4.422 18.07 3.633 17.7 3.633 17.7c-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 22.092 24 17.592 24 12.297c0-6.627-5.373-12-12-12"/></svg></a><a class="VPSocialLink no-icon" href="https://discord.gg/kkXYbVykZX" aria-label="discord" target="_blank" rel="noopener" data-v-f2234a39 data-v-efc53bd4><svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>Discord</title><path d="M20.317 4.3698a19.7913 19.7913 0 00-4.8851-1.5152.0741.0741 0 00-.0785.0371c-.211.3753-.4447.8648-.6083 1.2495-1.8447-.2762-3.68-.2762-5.4868 0-.1636-.3933-.4058-.8742-.6177-1.2495a.077.077 0 00-.0785-.037 19.7363 19.7363 0 00-4.8852 1.515.0699.0699 0 00-.0321.0277C.5334 9.0458-.319 13.5799.0992 18.0578a.0824.0824 0 00.0312.0561c2.0528 1.5076 4.0413 2.4228 5.9929 3.0294a.0777.0777 0 00.0842-.0276c.4616-.6304.8731-1.2952 1.226-1.9942a.076.076 0 00-.0416-.1057c-.6528-.2476-1.2743-.5495-1.8722-.8923a.077.077 0 01-.0076-.1277c.1258-.0943.2517-.1923.3718-.2914a.0743.0743 0 01.0776-.0105c3.9278 1.7933 8.18 1.7933 12.0614 0a.0739.0739 0 01.0785.0095c.1202.099.246.1981.3728.2924a.077.077 0 01-.0066.1276 12.2986 12.2986 0 01-1.873.8914.0766.0766 0 00-.0407.1067c.3604.698.7719 1.3628 1.225 1.9932a.076.076 0 00.0842.0286c1.961-.6067 3.9495-1.5219 6.0023-3.0294a.077.077 0 00.0313-.0552c.5004-5.177-.8382-9.6739-3.5485-13.6604a.061.061 0 00-.0312-.0286zM8.02 15.3312c-1.1825 0-2.1569-1.0857-2.1569-2.419 0-1.3332.9555-2.4189 2.157-2.4189 1.2108 0 2.1757 1.0952 2.1568 2.419 0 1.3332-.9555 2.4189-2.1569 2.4189zm7.9748 0c-1.1825 0-2.1569-1.0857-2.1569-2.419 0-1.3332.9554-2.4189 2.1569-2.4189 1.2108 0 2.1757 1.0952 2.1568 2.419 0 1.3332-.946 2.4189-2.1568 2.4189Z"/></svg></a><!--]--></div></div></div><!--]--><!--]--></div></div></div><!--[--><!--]--><button type="button" class="VPNavBarHamburger hamburger" aria-label="mobile navigation" aria-expanded="false" aria-controls="VPNavScreen" data-v-dfeca417 data-v-670493dd><span class="container" data-v-670493dd><span class="top" data-v-670493dd></span><span class="middle" data-v-670493dd></span><span class="bottom" data-v-670493dd></span></span></button></div></div></div></div><!----></header><div class="VPLocalNav reached-top" data-v-527a0310 data-v-3c3d80ab><button class="menu" aria-expanded="false" aria-controls="VPSidebarNav" data-v-3c3d80ab><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="menu-icon" data-v-3c3d80ab><path d="M17,11H3c-0.6,0-1-0.4-1-1s0.4-1,1-1h14c0.6,0,1,0.4,1,1S17.6,11,17,11z"></path><path d="M21,7H3C2.4,7,2,6.6,2,6s0.4-1,1-1h18c0.6,0,1,0.4,1,1S21.6,7,21,7z"></path><path d="M21,15H3c-0.6,0-1-0.4-1-1s0.4-1,1-1h18c0.6,0,1,0.4,1,1S21.6,15,21,15z"></path><path d="M17,19H3c-0.6,0-1-0.4-1-1s0.4-1,1-1h14c0.6,0,1,0.4,1,1S17.6,19,17,19z"></path></svg><span class="menu-text" data-v-3c3d80ab>Menu</span></button><div class="VPLocalNavOutlineDropdown" style="--vp-vh:0px;" data-v-3c3d80ab data-v-2c1007a4><button data-v-2c1007a4>Return to top</button><!----></div></div><aside class="VPSidebar" data-v-527a0310 data-v-45ef976a><div class="curtain" data-v-45ef976a></div><nav class="nav" id="VPSidebarNav" aria-labelledby="sidebar-aria-label" tabindex="-1" data-v-45ef976a><span class="visually-hidden" id="sidebar-aria-label" data-v-45ef976a> Sidebar Navigation </span><!--[--><!--]--><!--[--><div class="group" data-v-45ef976a><section class="VPSidebarItem level-0 has-active" data-v-45ef976a data-v-f0f37ff4><div class="item" role="button" tabindex="0" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><h2 class="text" data-v-f0f37ff4>Getting Started</h2><!----></div><div class="items" data-v-f0f37ff4><!--[--><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/getting_started/intro" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Introduction</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/getting_started/things_to_know" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Things to know before you start</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/getting_started/led_safety" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>LED Safety</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-45ef976a><section class="VPSidebarItem level-0" data-v-45ef976a data-v-f0f37ff4><div class="item" role="button" tabindex="0" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><h2 class="text" data-v-f0f37ff4>How to Build</h2><!----></div><div class="items" data-v-f0f37ff4><!--[--><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/how_to_build/parts_list" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Part List</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/how_to_build/part_list" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Parts List (BETA)</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/how_to_build/protecting_cameras" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Protecting Cameras</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/how_to_build/preparing_xiao" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Preparing XIAO Sense ESP32</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/how_to_build/led_setup" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Preparing V4 LEDs</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/how_to_build/creating_your_own_mount" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>How to Create your own Camera Mount</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/how_to_build/full_build" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Full Build Guide</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-45ef976a><section class="VPSidebarItem level-0" data-v-45ef976a data-v-f0f37ff4><div class="item" role="button" tabindex="0" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><h2 class="text" data-v-f0f37ff4>Headset Guides</h2><!----></div><div class="items" data-v-f0f37ff4><!--[--><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/headset_guides/what_is_this" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>What is This?</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/headset_guides/valve_index" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Valve Index</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-45ef976a><section class="VPSidebarItem level-0" data-v-45ef976a data-v-f0f37ff4><div class="item" role="button" tabindex="0" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><h2 class="text" data-v-f0f37ff4>Firmware Guide</h2><!----></div><div class="items" data-v-f0f37ff4><!--[--><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/firmware" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Introduction</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/flashing_tool" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Flashing Tool</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/mdns" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>MDNS</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/rest_api" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>REST API</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-45ef976a><section class="VPSidebarItem level-0" data-v-45ef976a data-v-f0f37ff4><div class="item" role="button" tabindex="0" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><h2 class="text" data-v-f0f37ff4>Software Guide</h2><!----></div><div class="items" data-v-f0f37ff4><!--[--><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/software_guide/eyetrackvr_app_guide" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Installing and setting up the ETVR App</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/software_guide/build_software" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Building the app from source</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/software_guide/osc_setup" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Setting up OSC recenter/recalibrate</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/software_guide/VRCFT_tracking_module" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Setting up VRCFT - VRCFT Module</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-45ef976a><section class="VPSidebarItem level-0" data-v-45ef976a data-v-f0f37ff4><div class="item" role="button" tabindex="0" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><h2 class="text" data-v-f0f37ff4>Miscellaneous</h2><!----></div><div class="items" data-v-f0f37ff4><!--[--><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/misc/vrc_avatar_setup" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>VR Chat Avatar Setup</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/misc/faq" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>FAQ</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-45ef976a><section class="VPSidebarItem level-0" data-v-45ef976a data-v-f0f37ff4><div class="item" role="button" tabindex="0" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><h2 class="text" data-v-f0f37ff4>Development</h2><!----></div><div class="items" data-v-f0f37ff4><!--[--><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/development/docs/dev_docs" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Docs</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/development/docs/pages" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Edit Docs</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/development/docs/standards" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Standards</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-45ef976a><section class="VPSidebarItem level-0" data-v-45ef976a data-v-f0f37ff4><div class="item" role="button" tabindex="0" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><h2 class="text" data-v-f0f37ff4>Archive</h2><!----></div><div class="items" data-v-f0f37ff4><!--[--><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/setup_vscode" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Setup Visual Studio Code environment</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/configure_firmware" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Configuring Firmware</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/environments" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Firmware Environments</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/upload_and_update_firmware" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Uploading and Updating the Firmware</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/firmware_guide/update_platformio" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Updating PlatformIO</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-f0f37ff4 data-v-f0f37ff4><div class="item" data-v-f0f37ff4><div class="indicator" data-v-f0f37ff4></div><a class="VPLink link link" href="/archive/fox_ir_v2_build_instructions" data-v-f0f37ff4><!--[--><p class="text" data-v-f0f37ff4>Prepare to solder IR LED PCB V2's</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><!--]--><!--[--><!--]--></nav></aside><div class="VPContent has-sidebar" id="VPContent" data-v-527a0310 data-v-b7946bfc><div class="VPDoc has-sidebar has-aside" data-v-b7946bfc data-v-281cfc61><!--[--><!--]--><div class="container" data-v-281cfc61><div class="aside" data-v-281cfc61><div class="aside-curtain" data-v-281cfc61></div><div class="aside-container" data-v-281cfc61><div class="aside-content" data-v-281cfc61><div class="VPDocAside" data-v-281cfc61 data-v-79cae1a0><!--[--><!--]--><!--[--><!--]--><div class="VPDocAsideOutline" role="navigation" data-v-79cae1a0 data-v-d8517c5e><div class="content" data-v-d8517c5e><div class="outline-marker" data-v-d8517c5e></div><div class="outline-title" role="heading" aria-level="2" data-v-d8517c5e>On this page</div><nav aria-labelledby="doc-outline-aria-label" data-v-d8517c5e><span class="visually-hidden" id="doc-outline-aria-label" data-v-d8517c5e> Table of Contents for current page </span><ul class="root" data-v-d8517c5e data-v-74479eb5><!--[--><!--]--></ul></nav></div></div><!--[--><!--]--><div class="spacer" data-v-79cae1a0></div><!--[--><!--]--><!----><!--[--><!--]--><!--[--><!--]--></div></div></div></div><div class="content" data-v-281cfc61><div class="content-container" data-v-281cfc61><!--[--><!--]--><!----><main class="main" data-v-281cfc61><div style="position:relative;" class="vp-doc _getting_started_led_safety" data-v-281cfc61><div><h2 id="about-ir-emitter-safety" tabindex="-1">About IR Emitter Safety <a class="header-anchor" href="#about-ir-emitter-safety" aria-label="Permalink to &quot;About IR Emitter Safety&quot;"></a></h2><p>Please <em>exercise caution</em> when messing around with IR emitters.</p><p>IR can be dangerous to your eyes once at a certain power level. It is not recommended to use different emitters unless you know exactly what you are doing as it could result in harm to your eyes. If you doubt yourself or do not understand something, just do exactly what we do. Don&#39;t use different emitters, don&#39;t use different means of power, etc.</p><div class="danger custom-block"><p class="custom-block-title">DANGER</p><p>It is important that you <ins><strong>DO NOT BYPASS (OR NOT DO) ANY SAFETY FEATURES PUT IN PLACE</strong></ins>. This can result in irreversible bodily harm.</p></div><p>The safety measures were put in place to REDUCE the potential failure risk. All further safety responsibilities are on the user. This includes visually checking with an IR camera that the brightness is correct and that you do not feel warmth, excessive eye-strain or experience short-term effects after being exposed to the IR light (symptoms such as dark spots or dry/warm feeling eyes while actively using). While we strive to make EyeTrackVR as safe as possible, we do not hold any responsibility for damage done.</p><h3 id="what-we-care-about" tabindex="-1">What we care about: <a class="header-anchor" href="#what-we-care-about" aria-label="Permalink to &quot;What we care about:&quot;"></a></h3><p>We care about power exposure &quot;W&quot; to the cornea, which we can normalize over the exposed area to Irradiance &quot;mW/cm^2&quot; This number gives us the amount of IR radiation being released into the normalized area. We don&#39;t really care about &quot;mA&quot;, or &quot;V&quot; alone, as by themselves these do not give us the exposure levels which we need to ensure safety.</p><p>Irradiance also needs to take into account distance of the light source (LED) as the further away you get from a source the weaker the intensity gets. (You can test this by looking at a light source from far away, and as you move closer, the brighter and more painful it is to look at) We do this by using Radiance &quot;mW/cm2/sr&quot; to normalize for the distance. The &#39;sr&#39; stands for steradian, which can be thought of as a cone shape expanding as it moves away from the source.</p><p>The International Commission on Non-Ionizing Radiation Protection&#39;s <a href="../safety/ICNIRP_optical_radiation.pdf">Guidelines of limits of exposure to broad-band incoherent optical radiation (0.38 to 3 µm)</a> states:</p><blockquote><p>&quot;To avoid thermal injury of the cornea and possible delayed effects on the lens of the eye (cataractogenesis), infrared radiation (780nm &lt; &gt; λ &lt; &gt; 3μm) should be limited to 100 W m⁻² (10 mW cm⁻²) for lengthy exposures (&gt; 1000 s)&quot;</p></blockquote><p>So 10 mW/cm2 is the <strong>max</strong> recommended limit given by this source. In my opinion this is still quite high, you will definitely feel some warmth and likely eyestrain after a while.</p><p>It is known that when outside and not directly looking at the sun, your eyes get exposed to about 1 mW/cm2 or IR radiation. This is the target I set for hardware generally.</p><div class="my-2 max-w-xs rounded-lg bg-white px-4 py-4 shadow-xl ring-1 ring-slate-900/5 dark:bg-slate-800"><div><span class="drop-shadow-lg"><span class="VPBadge info" data-v-4415f8bd><!--[-->NOTE<!--]--></span></span></div><div class="text-[blue] mt-2 pl-1 text-2xl font-bold tracking-tight text-slate-900"></div><p class="text-slate-500 dark:text-slate-400 mt-2 pl-1 text-sm"><!--[--><p> This math is assuming the LED is directly in front of your pupil, and your pupil is not moving. In real world this is not the case. We have multiple LEDs around your eye, and your eye moves. When you look to the side, your pupil is not receiving all of the light from all LEDs and the distance grows as well. Properly calculating for this is hard and not worth the time. I chose to show that the &quot;worst case scenario&quot; is still well withing safety margins. </p><!--]--></p></div><h1 id="v3-hardware-safety-outline-and-exposure-numbers" tabindex="-1">V3 Hardware Safety Outline and Exposure Numbers: <a class="header-anchor" href="#v3-hardware-safety-outline-and-exposure-numbers" aria-label="Permalink to &quot;V3 Hardware Safety Outline and Exposure Numbers:&quot;"></a></h1><p>For all of this math we will assume the &quot;worst&quot; to ensure we are well within safety.</p><p>if powered with 5V, using 700 ohms of resistance, V3 Hardware will draw 0.00314... Amps. We will round up and convert this to 3.2mA.</p><blockquote><p>(5V - 1.4V - 1.4V) / 700 ohm = 0.00314 ≈ 3.2mA</p></blockquote><p>The <a href="https://datasheet.lcsc.com/lcsc/2211030000_XINGLIGHT-XL-3216HIRC-850_C965891.pdf" target="_blank" rel="noreferrer">LED datasheet</a> lists the intensity at 20mA to be a minimum of 2 and max of 5. We will assume the worst and use 5mW/sr.</p><blockquote><p>5 mW/sr * (3.2mA / 20mA) = 0.8 mW/sr</p></blockquote><p>Now, we need to account for distance. My number is based on a worst case scenario of 1cm of distance. (typically is is higher on average.) We convert 1cm to 1cm2/sr</p><blockquote><p>0.8 mW/sr / 1cm2/sr = 0.8 mW/cm2</p></blockquote><p>Now, this is only for 1 LED, in the case of V3 we have 2 so we can:</p><blockquote><p>0.8 mW/cm2 * 2 = 1.6 mW/cm2</p></blockquote><p>This value is well below the limit, and close to normal sun exposure outside. If the LEDs were further than 1cm (which they typically are) the exposure would be even less.</p><h1 id="v4-hardware-safety-outline-and-exposure-numbers" tabindex="-1">V4 Hardware Safety Outline and Exposure Numbers: <a class="header-anchor" href="#v4-hardware-safety-outline-and-exposure-numbers" aria-label="Permalink to &quot;V4 Hardware Safety Outline and Exposure Numbers:&quot;"></a></h1><p>For all of this math we will assume the &quot;worst&quot; to ensure we are well within safety.</p><p>V4 hardware is actively limited to ~2.4 mA</p><p>The <a href="https://datasheet.lcsc.com/lcsc/2211030000_XINGLIGHT-XL-3216HIRC-850_C965891.pdf" target="_blank" rel="noreferrer">LED datasheet</a> lists the intensity at 20mA to be a minimum of 2 and max of 5. We will assume the worst and use 5mW/sr.</p><blockquote><p>5 mW/sr * (2.4mA / 20mA) = 0.6 mW/sr</p></blockquote><p>Now, we need to account for distance. My number is based on a worst case scenario of 1cm of distance. (typically is is higher on average.) We convert 1cm to 1cm2/sr</p><blockquote><p>0.6 mW/sr / 1cm2/sr = 0.6 mW/cm2</p></blockquote><p>Now, this is only for 1 LED, in the case of V4 we have 4 so we can:</p><blockquote><p>0.6 mW/cm2 * 4 = 2.4 mW/cm2</p></blockquote><p>This value is well below the limit, and not far from sun exposure. If the LEDs were further than 1cm (which they typically are) the exposure would be even less. And with typical eye movement they are less.</p></div></div></main><footer class="VPDocFooter" data-v-281cfc61 data-v-67de71aa><!--[--><!--]--><div class="edit-info" data-v-67de71aa><!----><div class="last-updated" data-v-67de71aa><p class="VPLastUpdated" data-v-67de71aa data-v-5be60f87>Last updated: <time datetime="2023-11-20T19:58:58.000Z" data-v-5be60f87></time></p></div></div><nav class="prev-next" data-v-67de71aa><div class="pager" data-v-67de71aa><a class="pager-link prev" href="/getting_started/things_to_know" data-v-67de71aa><span class="desc" data-v-67de71aa>Previous page</span><span class="title" data-v-67de71aa>Things to know before you start</span></a></div><div class="pager" data-v-67de71aa><a class="pager-link next" href="/how_to_build/parts_list" data-v-67de71aa><span class="desc" data-v-67de71aa>Next page</span><span class="title" data-v-67de71aa>Part List</span></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><footer class="VPFooter has-sidebar" data-v-527a0310 data-v-04a39284><div class="container" data-v-04a39284><p class="message" data-v-04a39284>Released under the MIT License.</p><p class="copyright" data-v-04a39284>Copyright © 2022-present ETVR</p></div></footer><!--[--><!--]--></div></div>
<script>window.__VP_HASH_MAP__=JSON.parse("{\"development_docs_dev_docs.md\":\"8c82f4d5\",\"firmware_guide_environments.md\":\"91f2f90d\",\"getting_started_things_to_know.md\":\"15ca0cec\",\"about.md\":\"2220c994\",\"development_docs_standards.md\":\"b8813c73\",\"how_to_build_creating_your_own_mount.md\":\"3149c9a8\",\"headset_guides_what_is_this.md\":\"8c6cda9a\",\"contact.md\":\"f6b2e90f\",\"firmware_guide_update_platformio.md\":\"f17a61be\",\"index.md\":\"19d8b2a9\",\"how_to_build_preparing_xiao.md\":\"348e8341\",\"misc_vrc_avatar_setup.md\":\"662e2721\",\"dev_roadmap.md\":\"7187e873\",\"how_to_build_protecting_cameras.md\":\"bfe50ed0\",\"getting_started_led_safety.md\":\"801786d6\",\"software_guide_vrcft_tracking_module.md\":\"38b61c52\",\"firmware_guide_upload_and_update_firmware.md\":\"3c770375\",\"firmware_guide_mdns.md\":\"2e0a52fd\",\"firmware_guide_rest_api.md\":\"2b166e09\",\"getting_started_intro.md\":\"c17555aa\",\"how_to_build_parts_list.md\":\"5cf857d9\",\"how_to_build_led_setup.md\":\"48596530\",\"firmware_guide_setup_vscode.md\":\"56c7ae0f\",\"how_to_build_full_build.md\":\"285155e5\",\"archive_fox_ir_v2_build_instructions.md\":\"e15998b9\",\"misc_faq.md\":\"7c6c90ab\",\"firmware_guide_configure_firmware.md\":\"1ea97484\",\"headset_guides_valve_index.md\":\"7899f9de\",\"development_docs_pages.md\":\"02eb4c25\",\"software_guide_build_software.md\":\"28fece6d\",\"how_to_build_part_list.md\":\"9bcaa9aa\",\"software_guide_eyetrackvr_app_guide.md\":\"8ff13fa7\",\"firmware_guide_flashing_tool.md\":\"aa27ef0a\",\"software_guide_osc_setup.md\":\"7d078c15\",\"firmware_guide_firmware.md\":\"b3185859\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"EyeTrackVR Docs\",\"description\":\"Official documentation for EyeTrackVR. Fully open-source and affordable VR eye tracking platform.\",\"base\":\"/\",\"head\":[],\"appearance\":true,\"themeConfig\":{\"logo\":{\"light\":\"/logo_light.png\",\"dark\":\"/logo.svg\",\"alt\":\"EyeTrackVR Logo\"},\"siteTitle\":\"EyeTrackVR Docs\",\"search\":{\"provider\":\"local\"},\"outline\":\"deep\",\"footer\":{\"message\":\"Released under the MIT License.\",\"copyright\":\"Copyright © 2022-present ETVR\"},\"nav\":[{\"text\":\"About\",\"items\":[{\"text\":\"About Us\",\"link\":\"/about\"},{\"text\":\"Development Road Map\",\"link\":\"/dev_roadmap\"}]},{\"text\":\"Contact\",\"link\":\"/contact\"}],\"sidebar\":[{\"text\":\"Getting Started\",\"collapsible\":true,\"items\":[{\"text\":\"Introduction\",\"link\":\"/getting_started/intro\"},{\"text\":\"Things to know before you start\",\"link\":\"/getting_started/things_to_know\"},{\"text\":\"LED Safety\",\"link\":\"/getting_started/led_safety\"}]},{\"text\":\"How to Build\",\"collapsible\":true,\"items\":[{\"text\":\"Part List\",\"link\":\"/how_to_build/parts_list\"},{\"text\":\"Parts List (BETA)\",\"link\":\"/how_to_build/part_list\"},{\"text\":\"Protecting Cameras\",\"link\":\"/how_to_build/protecting_cameras\"},{\"text\":\"Preparing XIAO Sense ESP32\",\"link\":\"/how_to_build/preparing_xiao\"},{\"text\":\"Preparing V4 LEDs\",\"link\":\"/how_to_build/led_setup\"},{\"text\":\"How to Create your own Camera Mount\",\"link\":\"/how_to_build/creating_your_own_mount\"},{\"text\":\"Full Build Guide\",\"link\":\"/how_to_build/full_build\"}]},{\"text\":\"Headset Guides\",\"collapsible\":true,\"items\":[{\"text\":\"What is This?\",\"link\":\"/headset_guides/what_is_this.md\"},{\"text\":\"Valve Index\",\"link\":\"/headset_guides/valve_index.md\"}]},{\"text\":\"Firmware Guide\",\"collapsible\":true,\"items\":[{\"text\":\"Introduction\",\"link\":\"/firmware_guide/firmware\"},{\"text\":\"Flashing Tool\",\"link\":\"/firmware_guide/flashing_tool.md\"},{\"text\":\"MDNS\",\"link\":\"/firmware_guide/mdns\"},{\"text\":\"REST API\",\"link\":\"/firmware_guide/rest_api\"}]},{\"text\":\"Software Guide\",\"collapsible\":true,\"items\":[{\"text\":\"Installing and setting up the ETVR App\",\"link\":\"/software_guide/eyetrackvr_app_guide\"},{\"text\":\"Building the app from source\",\"link\":\"/software_guide/build_software\"},{\"text\":\"Setting up OSC recenter/recalibrate\",\"link\":\"/software_guide/osc_setup\"},{\"text\":\"Setting up VRCFT - VRCFT Module\",\"link\":\"/software_guide/VRCFT_tracking_module\"}]},{\"text\":\"Miscellaneous\",\"collapsible\":true,\"items\":[{\"text\":\"VR Chat Avatar Setup\",\"link\":\"/misc/vrc_avatar_setup\"},{\"text\":\"FAQ\",\"link\":\"/misc/faq\"}]},{\"text\":\"Development\",\"collapsible\":true,\"items\":[{\"text\":\"Docs\",\"link\":\"/development/docs/dev_docs\"},{\"text\":\"Edit Docs\",\"link\":\"/development/docs/pages\"},{\"text\":\"Standards\",\"link\":\"/development/docs/standards\"}]},{\"text\":\"Archive\",\"collapsible\":true,\"items\":[{\"text\":\"Setup Visual Studio Code environment\",\"link\":\"/firmware_guide/setup_vscode\"},{\"text\":\"Configuring Firmware\",\"link\":\"/firmware_guide/configure_firmware\"},{\"text\":\"Firmware Environments\",\"link\":\"/firmware_guide/environments\"},{\"text\":\"Uploading and Updating the Firmware\",\"link\":\"/firmware_guide/upload_and_update_firmware\"},{\"text\":\"Updating PlatformIO\",\"link\":\"/firmware_guide/update_platformio\"},{\"text\":\"Prepare to solder IR LED PCB V2's\",\"link\":\"/archive/fox_ir_v2_build_instructions\"}]}],\"socialLinks\":[{\"icon\":\"github\",\"link\":\"https://github.com/EyeTrackVR\"},{\"icon\":\"discord\",\"link\":\"https://discord.gg/kkXYbVykZX\"}]},\"locales\":{},\"scrollOffset\":90,\"cleanUrls\":true}");</script>
</body>
</html>