Here at Provide Your Own, we are a big fan of LED lighting. Recent research has raised the alarm that LED lighting can cause retina damage. Is there any truth to this assertion? Can LEDs really be bad for your eyes, even causing blindness?
Fortunately for LED lovers, the answer is a resounding NO. When the facts are examined, if LEDs are bad for your eyes, then sunlight is at least ten times worse. Let’s first look at the basis for the assertion.
The Research Study
According to a sole news account:
The study found that LED radiation caused significant damage to human retinal pigment epithelial cells in vitro.
We irradiated naked retinal cells with intense light from LEDs in a petri dish and they didn’t do so well.
Keep in mind that damage would be done with any high intensity light. Have you stared into the sun lately? How about staring into lasers or high intensity LED flashlights? Think you might have some retina damage?
This research has not been peer reviewed, but is simply an account given by Dr Celia Sánchez Ramos. This fact does not invalid the research, but shows that we have absolutely no … Read the rest
Posted in Health, Tech
Tagged led lighting
Here at Provide Your Own, we love LED lighting. We also believe the best use of LED lighting is by making your own custom fixtures rather than going out to buy a manufactured light bulb.
An Italian company has the same idea. They have a product where you make your own LED desklamp from a pizza box. In the great spirit of open source, they even provide downloadable plans for cutting and folding your own.
Their version of the lamp uses only a 4″ LED strip for illumination. That comes out to about 60 lumens or the output of a 4 watt bulb. We recommend using at least a 12″ strip (cut into two 6″ pieces), which would provide about 180 lumens or 12 watts equivalent.
Here’s what you need to build your own:
For your convenience, we offer a complete kit (no soldering required) for only $24.95 (over 30% saving over buying the parts separately).
You don’t have to be limited to cardboard either. It is simple to repurpose an … Read the rest
This article describes some wonderful new applications envisioned for LED lighting. While many of the links don’t work, it still contains some great photos of LEDs being used for decorating buildings, night-time gardens and more.
I can’t help commenting on the article’s main premise – that LEDs will lead to greater energy use than incandescent lights. This is absolutely true, but it is not a bad thing. As pointed out in their excellent book The Bottomless Well any time energy efficiencies are achieved, greater energy use is the result. The main reason for this effect is because of new applications found for the new technology. LEDs are a perfect example.
Some might be saying, “but we are in an energy crisis, don’t we need to conserve energy?” The answer is that the energy situation might be in a state of flux right now, we are in no way in a shortage. The US is on the verge of developing massive petroleum deposits which will make it a leading producer in a few years, and the price of solar is dropping to the point where powering our lights and appliances is now at the point that almost everyone can afford it … Read the rest
Posted in Energy
Tagged led lighting