![]() The journey isn’t perfectly straight though. The core concept is that clear acrylic sheets have the ability to act as fiber optics, piping light from one edge to the other. We’ve featured quite a few projects like these on Hackaday, and they’re just the right level of complexity to get your feet wet at the local Hackerspace. Tackling this project made me wonder: how do manufacturers in the electronics industry illuminate those ultra-flat laptop displays and TV screens to get a perfectly uniform glow? Following a bit of internet research, I discovered a treasure trove of useful insights.īefore we dive too deep into how the consumer electronics industry solves this problem, I want to first walk you through an analogous hacker side-project: the laser-cut acrylic edge-lit display. I’ll dig into the some of the working principles, introduce you to my homebrew approach, and leave you with some inspirational source code to go forth and build your own. Today, I’d like to share my findings and introduce you to light guide plates, one of the key building blocks inside of much of today’s backlit screen technology. ![]() What I thought would be quick project ended up being a dive down the rabbit hole that yielded some satisfying results. As fate would have it, the crux of this project was finding a way to do just that: to diffuse light coming in from the edges so that it would emit evenly from the front. True to the original, my replica would need to be both slimmed down and backlit with a uniform, natural white glow. Stay tuned for cake at the end of this article. In hyperstylized video game fashion, they were also extremely thin. If you’ve played the game, you’ll remember these signs as the illuminated monoliths that postmarked the start of every test chamber. It does not store any personal data.Last year, I found myself compelled to make a scaled-down replica of the iconic test chamber signs from the video game Portal. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. On the other hand, another company might not value these things and would be perfectly happy saving money by choosing direct-lit LED flat panel fixtures. Some offices or commercial buildings might prefer the thinner design and lighting effect that edge-lit panels offer. When it comes to direct-lit versus edge-lit LED flat panel lights, the decision often comes down to what works best for your specific application. When you consider the fact that many buildings are looking to replace a majority of or all of their thicker ceiling troffers with more efficient LED flat panels, direct-lit LED flat panel lights to start to look like the better choice, at least from a purely monetary point of view. The LEDs are housed there, and they shine onto a light-diffusing medium that is at the front of the panel. However, when the panel is not mounted, you will notice the light source sticking off the back. The regret comes later.ĭirect-lit LED flat panel light will look similar to an edge-lit flat panel light when mounted. It’s this process that has made the LED panel market torturously competitive.ĭespite some fixtures coming without guarantees of build quality or performance, buyers are still very keen to purchase. The unscrupulous panel manufacturer simply buys reels of cheap LED strip, mounts the strip into the frame, and fits the diffuser. Cheap lighting fixtures are cheap for a reason. The guidance on buying any type of LED luminaire stands: a lighting supplier with a decent reputation to maintain will be able to provide full, certified, photometric performance data of its fixtures. We are all aware of ridiculously low prices on LED panel lights available on the internet. At the same time, the unit cost of panel lights is going the other way, with some panel lights being offered at embarrassingly low prices. On the one hand, the lumen output of the LED panel lights is driving ever higher. ![]() There are two trends that are being watched carefully. ![]()
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