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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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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Osram Launches Long-Life, Mid-Power Osconiq S3030

Osram Opto Semiconductors introduced the mid-power Osconiq S3030.
The company says that it designed the new Osconiq S3030 to meet the demands of dynamic general lighting applications requiring long life and high performance.

Osram Opto Semiconductors introduced the mid-power Osconiq S3030 LEDs.

Osram Opto Semiconductors introduced the mid-power Osconiq S3030 LEDs.

Also, Osram Opto Semiconductors created the new Osconiq S3030 for use in outdoor and industrial lighting. According to the company, the Osconiq S3030 offers high quality LED light with exceptional durability, even in extreme operating conditions. Furthermore, the LEDs boast a long lifetime of 75,000 hours, even at high temperatures.

Osconiq Mid-Power LEDs Achieve up to 146 LPW

The mid-power LEDs employ an optimized phosphor and feature a lead frame, and they achieve up to 146 lumens per watt (LPW) efficiency.
Direct lighting and fluorescent tube replacement are suitable applications for the 0.2 W LEDs

Overall, the company asserts that the mid-power Osconiq S3030 delivers competitive brightness, lifetime, and reliability.

“In keeping up with the latest market demands, the Osconiq S3030 takes professional lighting solutions to another level in both outdoor and indoor uses, as well as industrial applications,” said Todd Bartol, North America Director of General Lighting at Osram Opto Semiconductors. “Our customers benefit from our unique Osram-designed sapphire chip and robust silicone that enable the stability of LED lighting.”

The Osconiq S3030 LEDs come in two versions (CRI 70 or 80) with a luminous flux of 138 to 148 lm and a power rating of 1.0 W at 6 V. The footprint of both versions measures just 3.0 mm x 3.0 m x 3.0 mm, and the color temperatures range from 2,700 to 6,500 K. The LEDs also feature a beam angle of 120° and an extremely low thermal resistance of about 8.9 K/W.

In addition to the performance enhancements, the company constructs the Osconiq S3030 with professional grade materials including long-life packaging subcomponents and proprietary coatings. Osram Opto Semiconductors says it validated these materials via extensive testing under extreme overload conditions. Moreover, the company says that the EMC (epoxy molding compound) lead frame material greatly increases the lifetime and improves the reliability of the LEDs compared to conventional PPA and PCT materials.

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New Luxeon 2835 from Lumileds Achieves Over 200 LPW

Lumileds of San Jose, California USA, introduced the Luxeon 2835 HE. The Luxeon 2835 HE boasts efficacy of over 200 lumens per watt (LPW), while providing excellent color consistency. Also, the 2835 HE expands on the company’s successful Luxeon 2835 Line. Lumileds optimized the new LED to deliver high efficacy, and the LED features a 2-step MacAdam ellipse color consistency. Applications such as troffers as well as high and low bay fixtures can employ the LED.

The Luxeon 2835 HE comes in a wide range of color temperatures and CRIs of 70 to 90 for a variety of general lighting designs. Also, the LED can serve as a drop-in replacement for 2835 LED packages (2.8 x 3.5 mm), or it can replace 5630 (5.6 x 3.0 mm) or 3030 (3.0 x 3.0 mm) mid-power sockets with similar optical requirements.

LED Binned to 2-Step MacAdam Ellipse

“The LED’s tight color point distinguishes it from other mid-power devices in its class. Design kits to 2-step MacAdam ellipse are available for the ultimate in color consistency for demanding lighting applications,” said Sam Wu, Product Manager of Mid Power Products at Lumileds. The LED delivers 36 lm at 65 mA drive current and 202 LPW, or 220 lm at 480 mA (4000K and 80 CRI).

“Luxeon 2835 HE is ideally suited to troffers, downlights, and lamps where fixture efficacy greater than 150 lumen per watt is paramount and LED count must be minimized,” said Wu.

According to Lumileds, the LED’s high-reliability design enables it to deliver more light from a smaller profile in general lighting applications. Also, unlike many available 2835 LED packages, the company says that the Luxeon 2835 HE is lumen maintenance tested (LM-80) to 12,000 hours, thereby achieving a lumen maintenance of 72,000 hours in the field (L70, TM-21 basis).

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Tokyo District Court Dismisses Everlight Patent Infringement Claims Against Nichia, Citizen, and Daiko

Nichia of Japan reported that the Tokyo District Court dismissed Everlight’s patent infringement lawsuit seeking injunctions. On October 5, 2018, Nichia says that the Tokyo District Court in Japan completely dismissed the claims of Everlight in the a patent infringement lawsuit that Everlight Electronics Co., Ltd. filed against Nichia Corporation, Citizen Electronics Co.,Ltd., and Daiko Electric Co.,Ltd.

In the Lawsuit, Everlight alleged that the chip-on-board (COB) LED product that Nichia, Citizen, and Daiko produced and the lighting fixtures using the COB product mounted thereon infringe Everlight’s Japanese Patent No. 3989794. However, the court entirely rejected Everlight’s claims.

Nichia closed the company’s statement about the dismissal saying, “We would appreciate our valued customers’ understanding and cooperation and continued comfortable use of our reliable products.”

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Archipelago and Seoul Settle Patent Disputes

Seoul Semiconductor based in Ansan, South Korea, reported that it and Seoul Viosys Co., Ltd. have resolved two patent infringement lawsuits it filed against Archipelago Lighting, Inc. in the U.S. Federal District Court for the Central District of California. Archipelago sells LED bulbs.

In 2017, Seoul filed the company’s first patent infringement lawsuit against Archipelago for the alleged infringement of twelve LED patents covering various aspects of Seoul’s long-established Acrich technology. A few months afterward, Seoul filed a second patent lawsuit against Archipelago accusing the company of selling additional products that infringe eight other Acrich technology patents.

In the lawsuits, Archipelago acknowledged that several third-party suppliers produced the LED components in its LED bulbs. Although Archipelago admitted that the company had no knowledge of any Seoul Semiconductor patents, it did not dispute that the LED bulbs in question infringed Seoul Semiconductor’s patents. According to Seoul, Archipelago also did not dispute the validity of the relevant its patents and agreed to pay a license fee as part of its commitment to respect the intellectual property rights of others.

Court Ruled in Seoul’s Favor Due to Archipelago Admissions

The California Central district court ruled in favor of Seoul Semiconductor in these cases based upon Archipelago’s admissions. Seoul’s asserted patents include technologies for LED chip fabrication, LED epitaxial growth, LED packaging, filament bulb LED structures, LED drivers for high-voltage operations, and Acrich MJT (multi-junction technology) for high power LED chips operating at 6V.

Seoul Semiconductor--Archipelago patent dispute diagram

Seoul says its Acrich technology enables high-voltage operation with a high power output using only a small number of LED chips. Specifically, Acrich technology employs the company’s proprietary LED driver technology to enable high-voltage operation, as well as its proprietary MJT technology for mounting and integrating numerous LEDs within a small area. Seoul says this arrangement maximizes the available space in LED products and increases power efficiency by 20%. Also, Seoul says the space saving design aids a simple circuit design and significantly reduces the size and cost of LED products.

Nam Ki-bum, executive VP of the lighting department at Seoul Semiconductor, said, “While Seoul will continue enforcement actions to prevent unauthorized use of Acrich technology, we will offer a license program with reasonable terms for companies that recognize and respect the value of Acrich technology. This will promote the distribution of innovative technology products in the market.” He added, “For young entrepreneurs and small entities that wish to pursue technology innovation, this will help them achieve business success, while Seoul continuously works to encourage a fair competition market where intellectual property rights are respected.”

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Lumileds Adds Infrared Emitter Family for Automotive Segment

Lumileds expanded its family of IR emitter family to include infrared (IR) emitters for automotive applications. The new Luxeon IR Family for Automotive targets both interior and exterior automotive applications, including Driver Monitoring Systems, Gesture-based controls, and Night Vision.

The Luxeon IR Domed Line includes 4 different emission patterns with emission angles of 50°, 60°, 90°, and 150°. The line also features an industry compatible footprint for seamless implementation in existing designs. Lumileds claims that the Luxeon IR Compact Line brings the world’s smallest high-power infrared emitter to the automotive segment. This minuscule size enables miniaturization and gives designers unprecedented freedom for creating custom optical designs.

Lumileds introduced the Luxeon IR family for the automotive segment.

Lumileds introduced the Luxeon IR family for the automotive segment.

Both the Luxeon IR Domed Line and Luxeon IR Compact Line use a ceramic substrate for optimal heat dissipation and the company claims that they offer the world’s best thermal conductivity in their class. Lumileds constructed the Luxeon IR Family for Automotive according to the highest industry standards and the IR emitters are compliant with AEC – Q102.

“With the introduction of the Luxeon IR Family for Automotive, Lumileds is offering the automotive industry a range of infrared emitters that will enable further implementation of Advanced Driver-Assistance Systems (ADAS) in the next generation of cars. The Luxeon IR Domed Line for Automotive is ideal for use in interior applications like Driver Monitor Systems (DMS) and Occupancy Detection. The Luxeon IR Compact Line for Automotive is very well suited for integration in exterior optical systems, such as head or tail lights for lane-departing systems, IR illumination at night or during bad weather conditions,” said Wouter Schrama, senior product manager for the Luxeon IR Family.

Lumileds will begin shipping the Luxeon IR Domed Line and the LUXEON IR Compact Line for Automotive at the end of 2018.

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Nichia Introduces Mid-Power LEDs with Efficacy Above 200 lm/W

Nichia Corporation of Tokushima, Japan, introduced the new 585 series of mid-power LEDs, which includes the NF2W585AR and the NF3W585AR. With high flux output at about 0.5W, the company says that the 585 series achieves the efficacy of more than 200 lumens per watt (lm/W). According to Nichia, the production of the 585 Series continues the expansion of its vertically integrated operations.

585 Series Offers High Output in Limited Space

The series boasts superb performance in applications with limited space that need higher output and efficacy. Also, the company notes that using these high efficacy mid-power LEDs in applications of 200 lm/W and above, lets customers reduce the number of LEDs without compromising fixture efficacy.  Additionally, Nichia says that reducing the sizes for both the board and heatsink can result in a smaller overall fixture and lower cost.

The 585 series carries the same quality and projected lifetimes of other Nichia LEDs. Potential applications for these LEDs include outdoor lighting, high bays, and other lighting purposes that require small fixture size.

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