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Technical Lighting Help

What if We Don’t Care About Keeping LEDs Cool?

Sleeveless Garment – China – 1880s

The Cleveland Museum of Art holds, what most experts believe to be one of the best collections of Asian Art in the world. The post WWII Curator-Director, Sherman E. Lee made important connections throughout the continent while serving there in the military during and after the war. Those connections proved invaluable as the museum ramped up the department. Special Exhibitions of the collection are well attended and always of interest. In the latest, “China’s Southern Paradise: Treasures from the Lower Yangzi Delta,” I saw something I had never seen before.

The lower Yangzi was a crucial center for the trades, craftsmanship and production for centuries. It was close to water, fertile land and necessary raw materials. Unfortunately, working in this era was still difficult and the climate is often humid. To keep the laborer cool, a bamboo “sleeveless garment” was created. That piece, in remarkably good shape was included in the exhibition. Small 1/16” diameter by 1” long segments of bamboo reeds were strung together in a diamond pattern. The undershirt created a layer of air between the skin and fabric, thereby helping to keep the worker cool. I was amazed by this utilitarian object, far more than the decorative ceramic vases, jade carvings and fine scroll paintings.

Keeping cool has always been the goal of LEDs. Like the creation of an elaborate woven undershirt, a fair amount of time (and money) has been spent insuring that the LED is operating at peak performance in lamps and luminaires. But what if we didn’t care? What if we allowed LEDs to “run hot?” What would happen?

The short answer is what we are now seeing in many LED replacement lamps, premature death. In an effort to cut costs, long hours of life have been sacrificed. Rather than the 40,000 to 50,000 hours of expected life, most commonly available light bulbs are now promising 15,000 to 20,000 hours. There is a belief that consumers are “OK” with lower levels of performance. Decisions have been made based on this assumption. To establish lower replacement lamp costs, forgo the “costly” heat protection components and shorten life expectancies.

I worry about what’s next. As we become accustomed to LED light in our homes, will we see lower lumen output next, like the shift from 120V to 130V on budget incandescent lamps a few decades ago? Will lower levels of color rendering be tried? Sure people with higher levels of color sensitivity will see the differences, but almost 85% of the population won’t. That might be worth the gamble.

I believe this is setting the stage for the creation of a “GE Revel-type” LED lamp. If you’re not an old codger like me, in a world of 25¢ light bulbs, GE determined that some people (15% of the population?) would spend more money (four to eight times more!) for better quality light bulbs. I have no way of knowing, but this had to be a profitable decision. Revel lamps were still available last year before the exit of incandescent.

I look forward to longer life, better lumen output and higher, more consistent levels of color across the spectrum in my light. I’d be a customer. For those features, I’ll gladly pay more. Now, swapping out my Banana Republic tees for a bamboo version…maybe not so much!

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Technical Lighting Help

Quantum is the New…

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I must admit, I have not stayed up to date on quantum dot LED technology. While I’ve read a few technical articles about them and I know they have had a big impact on flat screen color performance, I haven’t found where they will quickly appear in residential lighting.

My interest in quantum dot LED or OLED was sparked again while reading a Wired Magazine article on passwords. Like quantum dots, quantum computing is on the precipice of impacting that industry. If quantum computing comes to fruition, passwords as we know them will become obsolete. Regardless how many numbers, how many capital letters and how many special characters we use, passwords will be unearthed in seconds because of the unimaginable processing speed of quantum computing.

Of course, now that lighting is part of the “tech” sector (remember, LED are simply semiconductors) rapid change is an inevitability. No one in the computer industry is suggesting quantum computing will not happen just as I’m not denying quantum dot LED will show up in residential lighting…eventually. Despite this coming technology, passwords, or baseline security protection is not making advances, or more succinctly put, they are not finding security protections options as fast as quantum technology normalization is advancing.

I can’t imagine a career dedicated to creating digital security options. I can only say, “Good luck!” Even though lighting has been my life for almost fifty years, I’m not sure I’m smart enough to visualize how quantum dots LED/OLED will impact residential lighting. My guess is the quantum technology will be packaged to create almost perfectly replicated natural light that easily changes throughout the day, minute by minute, season by season. Our bodies circadian demands will be full satiated and the harm done by artificial lighting up to this point will be placed in the rearview mirror, but does residential lighting have a “password issue?”

Is there something we currently enjoy with today’s LED lighting that will be changed by quantum LED/OLED? Will any of our power savings disappear? Will output suffer? The swap from incandescent light to LED forced a realignment of our perception of the color of light. Will the introduction of quantum LED cause a revisit of this issue? Does the elimination of light within the UV and infrared spectrum disappear with quantum technology? Will UV and infrared light again be a concern?

Perhaps these are being answered as I type. I plan on spending more time trying to understand the impact quantum LED/OLED might have on residential use lighting. In the meantime, I better change some computer passwords…or not.

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Lighting Commentary

Luciano Pavarotti and Kendrick Lamar and Lighting

Photo by Mikhail Nilov on Pexels.com

I love the artwork of Thomas Hart Benton. My favorite artist is Edward Hopper. I remember when the Cleveland Museum of Art bought the Grant Wood’s painting, “Haystacks.” I rushed to the museum unveiling and immediately fell in love. George Bellows’, “Stag at Sharkey’s” is the best piece of art at the second best art museum in the country.

I really enjoy opera and can’t get enough Broadway musical show tunes. Peggy Lee can do no wrong and “Kind of Blue” is unlikely to be bettered in my lifetime. Thank you, Miles.

With this cadre of preferences, people might expect me to be a bit more conservative, but to the contrary, I am always looking for the “next big thing.”

My favorite movie is “Chinatown” but I recently saw “Beau is Afraid” and it completely blew me away. This director is performing a high wire act while most others are barely juggling two bowling pins. I almost never listen to “oldies” instead I spend most of my radio time tuned to the local college stations, where they play a mix of rap, jazz, Latin and progressive contemporary rock. There is a reason Kendrick Lamar is the first rap artist to receive a Pulitzer Prize. Got a few hours? Listen to Kamasi Washington’s “The Epic” and you will understand the emergence of jazz genius. (Perhaps it might entail a second listen, too!) I am constantly looking at new art, checking out what maturing artists are doing at the Museum of Contemporary Art Cleveland and excited to see what is presented at the Cleveland Institute of Art graduate show each year. When I’m out of town and have an hour, I look for a gallery, museum or art show.

When I look at home furnishings, I also want to see the next new thing. When LED emerged, I was all-in. When home automation popped up, I immediately clung to its every possibility. I have spent a fair amount of time trying to understanding germicidal UV light and remain fascinated with the possibilities of circadian-effected light. Each and every day I wait for an inkling of proof that LED will be replaced with [fill-in the blank.] Somebody has to be working on something, right? Two lectures at the recently completed, LightFair talked about Laser Lighting and my mind has begun to resemble a top. Where could laser lighting head? What will it mean? Does it have any residential applications?

I do not want change, just for the sake of change. I do however know that as a society, we are constantly moving forward. As humans, we like to see alternatives. Technology cannot and should not be stopped, despite the Luddite tendencies we occasionally display. (Why do they keep changing my iPhone power cord, for example? I know, I know, there are very valid reasons.) Progress has lessened the drudgery of laundry cleaning and reduced the reams of paper required for long division. Movement forward means kids born in this decade will likely fail to understand what “changing a light bulb” means. They will not relate to a stack of light bulbs in a closet. Lighting that does not illuminate will mean a call to a professional, or replacement. It will be an anomaly rather than typical.

I read recently that young people are being educated in a slightly different way than I and perhaps most readers of this blog. Rather than repetition and memorization (When was the Magna Carta signed?) they are being taught critical thinking and more application of thought. To me, this makes much more sense, when combined with the tools you and I never had. Multiplication tables were crucial information in an era before calculators, but have become redundant when math solutions can now be resolved with a dollar store accessory purchase. Students can now spend less time on the mechanics of math and more on the reason and application of the calculations. That will be a far better use of a mind.

As I wrote this post, I could not recall the actual name of the George Bellows painting in the Cleveland Art Museum. I knew it included “Sharkey’s” and thought vaguely it might include the word, “Stag” but was uncertain how they were combined. “Stag Night at Sharkey’s?” “Sharkey’s Stag?” “Sharkey’s Night?” “Fight at Sharkey’s” Rather than fret over it, I simply did a quick internet search and immediately had the correct name, correct spelling and another look at this powerful piece of brutal, realistic art. My recollection of the name of a particular painting was substantially less important than the point I was/am attempting to make. Young people, guided under these alternate parameters of knowledge application will be far more valuable than a student who can recite from memory all the capitals of Europe. Knowing unaided and immediately that Vaduz is the capital of Liechtenstein is of value only when playing Trivial Pursuit. Understanding that Liechtenstein is a country and Vaduz is a city, located on the European continent does however constitute a baseline of knowledge that some students have overlooked. This realignment is important and valuable.

I like the combination of my life’s concentrations. I can be passionate about older art and new art ideas. I can find antiques as interesting as the new furnishings created by Zaha Hadid’s company. I can sing along with a show tune and remember my time in the theater seeing the performance while at the same time, marvel at the newness of “Chaise Lounge” by the (really young) women who headline Wet Legs. I’m an old lighting guy that can revel in the replacement of LED lighting. I think that’s a good thing. What about you?

PS: If you don’t understand some of the cultural references made here, you could ask your grandmother or daughter and they might be able to explain, but Google will most assuredly know and even provide some background.

PSS: June, 15, 1215. Thanks Google.

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Lighting Commentary

Lighting Found In A Crystal Ball

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Perhaps the most well-attended educational program at LightFair is a survey of progress in the lighting industry. One of the speakers started their portion with a reminder of Amara’s Law. I think it a great place to begin this assessment also.

“We tend to overestimate the effect of a technology in the short run and underestimate the effect in the long run.” – Roy Amara

Think back when LED was new. It was a panacea. Light would last 100,000 hours. Cancer would be cured. Cost would be reduced to pennies. Over-estimated? Check. The first half of the law is true.

Today, LED technology is saving millions of dollars in energy costs. The color of light is now more in-tune with the designed environment. LED can be wavelength configured to the demands of edible plants and thereby increase growth and yield, resulting in a reduction in hunger. Science is moments away from stating unequivocally that specific colors of light at specific times can aid in a variety of health concerns, sleeplessness and wellbeing. LED is poised to be a vehicle for increased home automation, better wireless communication and even more paradigm changes. Yet, we think of LED as a different type of light bulb. Under estimated? Check. The second half of the law is also true.

To bounce us from this complacency, here are a few of the things we can expect in the future. LED and solid-state lighting should not yet be taken for granted.

  • Expect better dimming, better color, more color tuning opportunities, tighter tolerances (variations) in output, and smaller physical size of the light source.
  • More granular lighting controls, down to each and every luminaire in a huge office complex, controlled via a smart phone app or computer program. If available already, added simplicity is around the corner.
  • The LED will become a critical sub-function of the much more complex communication technology employ into the future. More “processing” will be built into each luminaire making the actual lighting fixture a vehicle by which the building or home operates. This will increase the building’s operational efficacy and increase the occupant’s satisfaction.
  • Thanks to LED, wireless communication will increase its occupation in the visible light portion of the electromagnetic spectrum, thereby expanding the capacity by huge percentages. LiFi is on its way to become bigger than WiFi.
  • Autonomous vehicles will not require street lighting, further reducing electric demand. Even if driverless cars are not fully implemented, street lighting can be switched to an “on demand” mode via communication between the lamp post and the vehicle.
  • All of these changes within a category we can call, “lighting” will open the floodgates for bigger changes in quantum computing, brain interface computing and building-based, low-voltage electricity.         

Could all of this slip right into the primary phrase of Amara’s Law again? Have I and the futurists overestimated the impact of light in the next twenty years? Check back on my blog page in November of 2041!