Tag Archives: Lamps

Soraa delivers 10-degree beam in LED-based PAR20 lamps

Soraa delivers 10-degree beam in LED-based PAR20 lamps
Published on: April 1, 2015
By Maury Wright
Editor in Chief, LEDs Magazine and Illumination in Focus

Soraa has announced that it has integrated its VP3 Vivid Color technology into a smaller LED PAR20 lamp form factor with an integrated 120V driver in the lamp. The solid-state lighting (SSL) product options include models with a beam as narrow as 10° and CCT choice of 2700K, 3000K, 4000K, and 5000K. The 10.8W LED PAR20 lamps can replace 75W and 90W halogen lamps and deliver superior color rendering along with superior illumination of white items treated with optical brightening agents.

LED PAR20 lamps can replace 75W and 90W halogen incumbents while delivering flexibility in beam pattern, CCT, and optical accessories.

The advantage of Soraa’s approach to LEDs has been broadly discussed especially relative to the illumination of both color and white items. The VP3 Vivid Color descriptor implies the violet LED and three-phosphor mix that enables the company’s products to deliver 95-CRI light with R9 performance of 95 as well – traits shared by the new LED PAR20 lamps.

Still, it may be the options in beam angle and center beam candle power (CBCP) that may allow the Soraa lamps to standout in the directional-lighting field. In recent reports, the US Department of Energy (DOE) has noted that LED lamps trail incumbent technology in narrow beam angles. But the new LED PAR20 lamps at 10° deliver CBCP of 8000–9000 cd based on CCT, for lamps in the 95-CRI Vivid line. That number goes to 11,000 cd for 80-CRI lamps in the Brilliant line.

The company offers the lamps over the range of 10°, 25°, 36°, and 60° beams. Moreover, it offers the optical accessories in the Snap product family for needs such as diffusers and filters. The Snap system uses magnets to attach the optical accessories quickly and securely.
“Powered by the world’s most efficient LED, the PAR20 provides unmatched color quality with our VP3 technology and superior optics with our Point Source Optics technology, while still delivering 85% energy-efficiency over standard halogen lamps,” said George Stringer, senior vice president of America sales and marketing at Soraa. “Neither too big nor small, the PAR20 is perfect in every way.”

Soraa says all of the LED PAR20 lamps are rated for use in enclosed fixtures indoors or outdoors. The products are rated for use in damp locations. Soraa specifies the products within a 3-step MacAdam ellipse in terms of color consistency. The company also promised a lower-power 50W-equivalent PAR20 lamp in the near future.
The only small negative with the lamp family is in the area of efficacy. Depending on CCT and CRI, efficacy ranges from 46–54 lm/W. But in general, LED-based products with warm CCTs and good CRI capabilities inevitably feature lower efficacy.

Indeed, the PAR20 shares the legacy with the Soraa PAR30 product that won the replacement lamps category in the inaugural LEDs Magazine Sapphire Awards. One of the judges noted that only efficacy separated the Soraa lamp from a perfect score, but also said the lamp design targeted the light quality required by demanding applications such as high-end retail over energy efficiency. But Soraa points out that the products still deliver the aforementioned 85% energy savings relative to incumbent technologies.

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What Color Temperature are Wildlife-Friendly Amber LED Lamps?

What Color Temperature are Wildlife-Friendly Amber LED Lamps?
Posted by Lyndsey

Access Fixtures wildlife-friendly Amber LED lamps are measured in nanometers, not in a specific Kelvin temperature. Kelvin and nanometers, while both referring to colors, do not measure the same thing and are not convertible.
What’s the deal?
Kelvin temperature indicates the perceived color of a light source. Available color temperatures range from 1000K to 8000K. The higher the temperature, the bluer the light will appear.
Nanometers (nm) measure a specific wavelength of light. Kelvin temperatures consist of a nearly infinite number of wavelengths to produce a perceived color. So even if the Kelvin temperature appears blue, it’s actually a combination of wavelengths at different nanometers.
Wildlife-friendly LED lamps are a specific wavelength of 590 nm. Although a lower Kelvin temperature may appear amber, it’s not actually the amber found in Access Fixtures wildlife-friendly LED amber flood lights, LED amber wall packs, LED amber bollard lights and LED amber garage lighters. It’s critical to use wavelengths of 590 nm for wildlife-friendly lighting since this is the wavelength that is not visible to animals affected by light pollution. Humans can see wavelengths between 400 and 750 nanometers.The two color spectrums below include high pressure sodium and 660 nanometers. They are not the same even though the two measures display similar perceived colors. While the Kelvin temperature is made up of many different wavelengths of various nanometers, 660 nanometers is a specific color. This means that a high pressure sodium wall pack may harm wildlife, but an LED amber wall pack will not.

A spectrum showing a 250w high pressure sodium light. Source: www.icmag.com

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General Electric Lighting and Lighting Science Group unveil LED Circadian Lamps

General Electric Lighting and Lighting Science Group unveil LED Circadian Lamps!
March 10, 2015
By Maury Wright
Editor in Chief, LEDs Magazine and Illumination in Focus

GE Align SSL retrofit lamp technology aims to nurture the natural human sleep and wake cycles, while the Lighting Science Group Sleepy Baby product is designed for infant sleep training.

GE Lighting and the Lighting Science Group (LSG) each have new LED-based, retrofit-lamp products intended to help humans sleep properly. GE’s new Align family includes different versions intended for night and morning usage. Lighting Science Group has been selling similarly-intended Good Night and Awake & Alert lamps and has now added Sleepy Baby lamps designed to assist parents in training infants to sleep through the night.
It is fairly well established that warm-CCT light at night encourages melatonin production in humans and induces sleep and a restful night. Likewise, blue-rich cooler-CCT lighting in the morning can suppress melatonin and lead to alertness and increased productivity. Philips was involved in one such study on LED lighting and human circadian rhythms. Researchers still don’t fully understand the impact of lighting on non-visual receptors in humans, as we covered in a recent interview. Still, many companies are ready to move forward with solid-state lighting (SSL) technology intended to optimize sleep/wake cycles.
Many of the products being developed for matching the circadian cycle use tunable light engines to produce the warm and cool light at different times of the day and night. But such designs inevitably cost more because multiple channels of LEDs are involved, a more complex driver is required, and a control element must be included for either autonomous or programmatic control of the lamps or luminaires.
GE Align lamps.
The products we cover here including the GE Align lamps take a more simplistic approach to circadian lighting. GE is offering two separate LED retrofit lamps for night and morning usage. The Align PM bulbs produce an amber hue meant to mimic candlelight or fire. GE recommends that people use the 7W lamps that produce 350 lm for 30 minutes prior to bedtime.

The 11W Align AM lamp produces 900 lm in a hue that GE describes as “concentrated bluish-white light. The company says that 30 minutes of usage after waking helps promote the natural wake cycle. The lamps are each listed at $35, although amazon.com has the PM version for $31.09 and the AM version for $32.48 currently.
“Aren’t we all tuned to the good feelings on a bright and sunny day, or the feelings we have on a gloomy day? Light impacts not only our mood and wellness, but our ability to fall asleep,” said Gary Allen, physicist and LED innovations principal engineer at GE Lighting. “By changing the timing, amount, spectral quality of light exposure, we can avoid disrupting the body’s natural circadian rhythms.”
GE has also produced a lengthy whitepaper on lighting and sleep. The nine-page PDF document includes a characterization of our current base of knowledge on the circadian rhythm, melatonin production, and the sleep/wake cycle. Perhaps more significantly, the document includes a comprehensive set of references to research in the area.
LSG circadian lamps
Of course, the GE lamps were not the first such products to market. LSG had announced the Good Night and Awake & Alert lamps at the Consumer Electronics Show (CES) back in January 2014. At the time, LSG said the consumer products were based on what it had learned in working with astronauts that had visited the International Space Station who depend completely on artificial light.

Now LSG has released the Sleepy Baby lamp designed for use by parents during an infant’s nightly bedtime routine. The 3.5W retrofit lamp produces 300 lm and is designed to replace a 40W incandescent bulb. The product has a very-warm 2300K CCT and is rated for 25,000 hours of use. It sells for $30 and comes with a five-year warranty.
“As a scientist, and the father of an infant myself, it was important to me to develop a biologically-correct LED lamp that could benefit my family,” said Robert Soler, director of lighting research at Lighting Science Group. “Utilizing the ground-breaking, collaborative research we did with NASA for our Good Night LED lamps, we biologically tailored it to work to support healthy infant circadian rhythm development and sleep cycles. Your baby can now utilize our light to fall asleep faster; stay asleep longer; and fall back to sleep quicker if awakened for late night feedings or changings. This product takes full circle Lighting Science’s dedication to provide healthy LED lighting and promote the advancement of biological lighting in the global environment.”

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