AquiSense Working with EPA and Washington University on UV LED Disinfection

AquiSense Technologies announced that it signed a Cooperative Research and Development Agreement (CRADA) with Washington University and the United States Environmental Protection Agency (EPA) to further advance the development of UV LED disinfection systems.

As part of the CRADA partnership, AquiSense is collaborating with US EPA researchers at the National Homeland Security Research Center (NHSRC) and Washington University’s Department of Energy, Environmental, and Chemical Engineering in the School of Engineering and Applied Science. The research and development partnership intends to design, fabricate, and test an integrated water treatment system incorporating ultraviolet LED (UV LED) disinfection and filtration technologies.

The developers hope to create an integrated device that will operate with higher flow rates and meet more challenging water quality standards than commercial systems currently available. The NHSRC is particularly intent on devising a rugged and quickly deployable emergency water treatment systems that can deliver safe water after natural and human-caused incidents.

“We are excited to participate in this development agreement as it showcases patented AquiSense technology and allows the expansion of UV LED disinfection technology to new application areas including; small community water and wastewater systems and a variety of industrial solutions,” said AquiSense CEO, Oliver Lawal. “The agreement we have announced today further reinforces our ability to maintain this leadership position as our UV-C LED technologies will be optimized for more challenging water treatment scenarios.”

Other AquiSense Research Collaborations

In addition to the announcement, AquiSense says it is currently participating in numerous other innovative research collaborations. According to AquiSense, over 40 laboratories worldwide use the cutting-edge UV-C LED research equipment including the PearlBeam collimated beam device to advance the understanding and application of UV-C LEDs in numerous critical human and environmental projects.

For example, the company is closely cooperating in field studies with separate groups at University of Colorado at Boulder and Dalhousie University, as part of the Biocontamination Integrated Control for Wet Systems for Space Exploration (BIOWYSE) project. The BIOWYSE project intends to address biocontamination issues on the International Space Station (ISS).

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Lumileds Launches Luxeon SunPlus 2835 Line for Maximizing Crop Yield

Lumileds introduced the Luxeon SunPlus 2835 Line of LEDs. The new Luxeon SunPlus Line boasts high photosynthetic photon flux (PPF) and comes with the color options required to maximize plant growth rates and crop yield of a variety of plants and vegetables.

The company says that the Line of LEDs lets growers select specific color points or design a customized spectrum for horticulture applications. The LED’s measure just 2.8 x 3.5 mm, allowing grow light systems designed with minimal spacing between plants.

In addition to the color choices and the high photosynthetic flux, Lumileds says that the small size SunPlus LEDs of just 2.8 x 3.5 mm helps maximize the use of limited space for plant growth. Furthermore, Lumiles says that this yield maximization can be realized in any combination of canopy or vertical farm applications.

The company offers the LEDs off-the-shelf or configured in the Lumileds Matrix Platform for faster time to market of grow lighting fixtures.

Growers Can Select a Specific Color Point

Growers can select a specific color point using Luxeon SunPlus 2835 Purple or Horticulture White LEDs, or customize a spectrum using combinations of the Luxeon SunPlus 2835 Deep Red, Far Red, Lime, and Royal Blue emitters. Horticulture White reportedly offers an ideal broad spectrum for growing many different crops. In tests, the SunPlus Horticulture White produced red leaf lettuce with significantly greater nutrient levels than RGB LEDs.

The company made the Luxeon SunPlus Purple LEDs with a customized phosphor solution designed to deliver the maximum PPF output in the Royal Blue and Deep Red portions of the spectrum.

“We are seeing great demand for Purple LEDs in vertical farms When the Purple LEDs are combined with Lime, a white color point is achieved, enabling ease of visual inspection and harvest,” said Jennifer Holland, Product Line Director at Lumileds.

Uniquely, the company says that the Luxeon SunPlus 2835 Series LEDs solve an industry challenge by matching polarity across all of the colors in the product range. This is said to simplify the PCB layout and system design.

The emitters are binned at 120 mA (25°C) but can be driven at up to 480 mA for higher lumen output and fewer LEDs per fixture. Lumileds claims that it is the only supplier that bins all its horticultural LEDs by PPF.

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Lumileds announces line of 2835 packaged LEDs for horticultural lighting applications

The Luxeon SunPlus 2835 LED portfolio includes monochromatic and phosphor-converted components that will support luminaire designs from single-channel broad-spectrum systems to multichannel tunable systems.

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Seoul Semiconductor Expands Patent Litigation Against Fry’s

Seoul Semiconductor Co., Ltd., reported that it expanded its patent infringement litigation against Fry’s Electronics, Inc., a big-box consumer electronics retailer, in the United States District Court for the Eastern District of Texas.

In its amended complaint, Seoul asserts that top brand televisions sold in Fry’s stores infringe 19 Seoul Semiconductor patents covering WICOP Technology that enables LED chips to be directly soldered onto printed circuit boards (PCB), as well as LED chips, LED packages, backlight lenses, backlight modules, and phosphors.

Seoul filed its original patent infringement lawsuit against Fry’s on August 31, 2018.

Seoul’s backlight lens patents cover a new concept in lens technology for producing thin and light televisions. The company jointly developed this patented backlight lens technology with preeminent optical expert, Dr. David Pelka, and these development efforts included considerable research and development investments.

Seoul says it now holds about 160 backlight related patents, as a result of these efforts and investments.

Seoul’s backlight module patent refers to the use of KSF phosphors to enable significant improvement in the color gamut of LCD displays. Seoul Semiconductor co-developed the related technology with Mitsubishi Chemical Corporation for numerous years. According to Seoul, the backlight technology has been widely incorporated in most mobile phones and increasingly applied in LCD TVs as well.

Seoul’s WICOP (Wafer Incorporated Chip on PCB) patents enable LED chips to be soldered onto a PCB without an LED package. Seoul points out that other companies may have attempted to imitate its patented WICOP technology, describing it as a CSP (Chip Size Package) that requires a sub-mount between a PCB and an LED.

Seoul Semiconductor- Diagram of key patented technology for WICOP

Seoul Semiconductor- Diagram of key patented technology for WICOP

Efforts to Protect its Patents LED Seoul to Expand Infringement Claims Against Fry’s

Protecting its patented technology has led Seoul to expand its infringement claims in the Fry’s ligation. Furthermore, to safeguard its LED backlight technology and other protected inventions, Seoul has actively enforced its patent rights and sent cease-and-desist letters to suspected infringers.

Seoul says that as a result of these enforcement efforts, the United States Federal Circuit Court of Appeals ruled on November 19, 2018, that one of Seoul’s competitors willfully infringed Seoul’s LED lens and backlight module patents. The appellate court also ruled that Korean LED package company Lumens Co., Ltd provided LED backlight bars incorporating infringing products to television makers.

“We hope that our commitment for technology innovation would inspire young entrepreneurs and small businesses,” said Sam Ryu, Seoul’s vice president of IT Business.“Protecting that technology against infringement is a cornerstone of our business and sends an important message to the market, and other innovators who would follow in Seoul’s footsteps – that hard work and innovation will be respected.”

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Nichia Launches Color-Temperature-Tunable COB LED Series

Adjusting light color and color temperatures is at the center of human-centric lighting designs that helps maintain natural biological rhythms. However, the designing color tuning with multiple LED packages on a board is complex and requires some ingenuity. Such a design makes it very difficult to create a color tunable device with a narrow beam.

Nichia introduced a series of LEDs with color temperature tuning on a single COB.

Nichia introduced a series of LEDs with color temperature tuning on a single COB.

For this reason, Nichia has introduced a tunable chip-on-board (COB) series of LEDs. According to Nichia, the uniquely designed COB package itself controls the light emission color of the tunable LED series. The new Tunable COB series is based on the company’s COB-Z series which features high flux density (model numbers: NJCWL024Z-V1MT/NVCWJ024Z-V1MT).

Nichia insists that the COB design will shrink the light emitting area of the light source and increase the degree of color mixing. Nichia also says its new color tunable COB series is perfect for numerous applications, including commercial uses such as retail spotlighting and even residential purposes such as downlights.

For example, a retail store could install lighting a single light that allowing the color temperature to be changeable based on their display or objects or a family could adjust the color temperature of their home to suit their natural biological rhythms.

The design of the color temperature tunable COB features a kind of mesh pattern surface across a hexagonal shape. The thick mesh-like part is one color temperature, and the full-sized hexigonal shaped di below it is another color temperature. Each color temperature di has its own electrical inputs. This design mixes the white color temperatures without needing any added optics.

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SALC moves toward a focus on LED light quality and less sky glow (MAGAZINE)

Connectivity and smart lighting remained a theme at the Street and Area Lighting Conference, but Maury Wright reports that outdoor light quality and protection of the dark sky were the more compelling topics at the 2018 event.

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