Building a realistic artificial sun (for dark winter days)
9 人推荐 · 跨 8 个月 · 2020–2025
中文导读
知名硬件改造博主 DIY Perks 手工打造了一台能以假乱真的「人造太阳」。他利用大功率水冷 LED、卫星锅反射抛物面实现准平行光束，再加上特制散射层完美模拟蓝天漫射，并深入拆解了普通灯具缺乏「阳光感」的光学原理与实际打光效果。
为什么 HN 推它
每当 Hacker News 讨论季节性情绪失调（SAD）、近视预防或室内高显色高照度照明时，这条视频都会被顶上首页，被誉为硬核 DIY 模拟自然日光的天花板范例。
「效果极其震撼，在此之前我从未见过能把日光还原到这种程度的 DIY 作品。」HN 网友原话：The result is quite stunning. I've never seen anything like it.
英文原摘要（HackerTube / Claude 整理）
DIY Perks builds a realistic artificial sun for dark winters, using a powerful water-cooled LED, a satellite dish reflector for near-parallel rays, and a scattering layer to mimic the blue sky. The video explains the optics behind why most lamps do not look like sunlight and shows the build and its results.
Whenever HN discusses seasonal affective disorder, myopia, or bright home lighting, people point to this as the most convincing buildable example of sunlight-like illumination.
HN 上的提及
This is the same chap who built Archimede's death ray in his bedroom.
sunlight’s rays are (virtually) parallel, because the light source is so far away
DIY Perks artificial sun build
how to get the "parallel light effect" that the sun has, so it doesn't look like a bulb, and diffuses properly
artificial sunlight (like this ) has impressed me