Blog Posts

Not LM certified? Of course not.

Not LM certified? Of course not. TM-21? TM-30? LM-79? LM-80? LM-81? LM-NOP? Passed? Certified? Approved? Compliant? What are you talking about? There is no doubt the last several years has brought about a number of organizations developing a plethora of standards and methods around LEDs. UL? Check. IES? Check. ANSI? Check. DOE? Check. DLC? Check. […]

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Permanent lighting – Part 2

   In Part 1 of this post, I posited that eventually LEDs could become efficient enough that the amount of metal needed would be much more than what’s needed to keep them cool enough to last a long time. Now let’s discuss what this could mean in real-world terms.   Permanent lighting – Part 2 […]

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Permanent lighting – Part 1

  Permanent lighting, Part 1 What if you really never needed to replace a light fixture again? Well, maybe not really, since everything does wear out eventually. But how long does a piece of the built environment need to last before it’s effectively permanent? Here’s a little thought experiment. Let’s say that the amount of […]

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LED News: The global market for LED lamps and modules

Navigant Research analyzes the global market for LED lamps and modules Navigant Research, a company specializing in clean technology markets, has analyzed the exploding LED industry and placed a staggering number on projected growth. The report, LED Lighting: Global Outlook, predicts some $216 billion in global revenue by 2024. This works out to an average revenue of […]

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Why We Make Our Own Light Engines

Why We Make Our Own Light Engines Visa Lighting is what many call a “legacy” lighting manufacturer these days. It’s another way of saying that we’ve been around long enough that we’ve seen and made product using just about every light source out there, from incandescent T-lamps to T5HO fluorescent to ceramic metal halide. Those […]

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The Only Thing Constant is …

The Only Thing Constant is … Current. Wait, no, Voltage Voltage and current are two very important parameters in electricity. While voltage indicates the force or pressure of electricity, current (measured in amps) designates the amount. The two go together. When you connect something to a voltage, the current flows. In most practical applications, the […]

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Sapphire and Silicon in LEDs

Sapphire and Silicon in LEDs By Matt Taylor The most popular white LEDs today use a gallium nitride (GaN) semiconductor deposited on a sapphire substrate, and are typically made on wafers of about 4 to 6 inches in diameter. The wafer is then cut into individual LED dice, which are then placed into a ceramic […]

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Energy Star vs the Lowest Common Denominator

Energy Star vs the Lowest Common Denominator On June 5th the EPA released version 2.0 of its ENERGY STAR for Luminaires standard, superseding V1.2 that was released in 2012. There are a few changes to the standard as requirement for LPW slowly move upward, along with provisions for color tunable and variable output products. The […]

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Six Degrees of the Nobel Prize in Physics

Six Degrees of the Nobel Prize in Physics A little while ago, I watched the award ceremony where Isamu Akasaki, Hiroshi Amano and Shuji Nakamura received the 2014 Nobel Prize in Physics for their inventions of the practical blue LED. I watched this using a Blu-Ray player hooked up to an LED HDTV and it […]

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Optimizing OLED

Optimizing OLED “Lumiblade Insider” – the world’s first OLED lighting magazine is now out!  And two of Visa Lighting’s OLED luminaires are featured in this first issue. Check out pages 48 and 49 to see Dan Schwade and Mike Arndt’s designs. Organic LED’s are the light source of the future! http://issuu.com/lumiblade/docs/lumiblade_insider_issuu1         […]

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