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+ - Super efficient LED that reaches 90% luminous efficiency-> 5

Submitted by Taco Cowboy
Taco Cowboy writes "LED lighting are generally considered as efficient, but typical LEDs on the market today only have internal quantum efficiency of 30-40%.

Meaning: For every watt of power pumped into the LED, only 30%-40% turns into light, while the rest (60%-70%) becomes heat.

And because of that, LED light manufacturers had to attach all kinds of heat sink to draw away all those excess heat.

A new LED material has been found to transform 90% of the power that it received into light.

NGK Insulators Ltd developed what it claims is a gallium nitride (GaN) wafer capable of doubling the luminous efficiency of LED light source.

The new GaN wafer can realize twice as high a luminous efficiency as existing LED light sources (200lm/W). And it can reduce power consumption by 50%, and in the meantime, extend the product life of the LED device, by reducing heat generation and reduce the sizes of lighting apparatuses, the company said."
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Super efficient LED that reaches 90% luminous efficiency More

Super efficient LED that reaches 90% luminous efficiency

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  • We've been seeing this stuff literally almost every week for decades now. So far, Philips is the only company that has actually stepped up to the plate with a product.

    Don't misunderstand me: this is great news, if it is true. But I'll wait until I see it on a shelf in the store before I make any assumptions about it.

    • Re: (Score:2)

      by Taco Cowboy (5327)

      I do not exactly follow all these - but as far as I know, Cree's announcement of their 151lm/W LED comes the closest - and that was like 6-7 months ago

      I submit this one only because of its 90% efficiency claim and a whopping 200lm/W light output

      • Good point, and I did see that. I was being a bit if a curmudgeon, I admit. So this case is probably a good one.

        The fact remains, though, that in general, this has been much like the predictions of flying cars: it is always just around the corner.

        On the other hand: we are starting to actually see those, too.

        • Re: (Score:2)

          by Taco Cowboy (5327)

          Anyway, many thanks for your comments :)

        • The old 60W incandescent bulb is doing well if it manages 3-4% efficiency. After many years of development fluorescents are stuck at around 20%. In a much shorter timescale, LEDS have achieved nearly twice the efficiency of the best fluorescents and their economic efficiency (tiny materials usage and low waste production) is vastly superior to anything other than tungsten halide bulbs. LEDs have already revolutionised niche applications like torches, security cameras and boat navigation lights.

          To put it int

Don't abandon hope. Your Captain Midnight decoder ring arrives tomorrow.

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