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NeoPac Opto pushes output brightness with single-packaged LEDs to maintained 1,500 lumen.

NeoPac Opto pushes output brightness with single-packaged LEDs to maintained 1,500 lumen.

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NeoPac unveils world's brightest single-packaged, point-like-source LED
Tuesday, 14 August 2007 00:00

-- Emitter offers 1,000 lm of maintain luminous flux at 20 watts.

World's brightest LED The multi-chip, ultra-high-power, single-packaged NeoPac Emitter was assembled at Cotco, a Cree company, by using Cree EZ1000 power chips. The efficacy of maintain luminous flux of the Emitter is 50 lm/W as the power is driven at 20 watts and Tj kept at 70℃.

NeoPac Opto, a subsidiary of NeoPac Lighting Group, announces today its proprietary System-In-Package (SIP) LEDs packaging approach is already to deliver a custom designed NeoPac Light Engine with point-like-source that the light output of maintain luminous flux at over 1,000 lm.

As a frontier in solid-state-lighting industry, NeoPac is always at the forefront of technologies breakthrough. By unveiling this groundbreaking achievement on LEDs packaging technology, NeoPac Opto pushes single-packaged LEDs brightness output ever further to a new high level in the industry.

It has achieved a new world record of LED maintain luminous flux at over 1,000 lm, operating at 720 mA, 20 watts, and undoubtedly will become a new standard in applying LED light sources for general lighting application.

The NeoPac Light Engine was made by seamlessly integrating first level LEDs package and second-level thermal management solution to become a system-in-package light source component. Most importantly, the 1,000 lm light output is measured by maintain luminous flux at 20 watts as the ambient temperature at 25℃.

By coupling a proprietary micro heat pipe based thermal module, the LEDs junction temperature (Tj) of the NeoPac Emitter is well controlled at under 70℃. Since the efficacy of the NeoPac Emitter is 70 lm/W at 350 mA, the initial luminous flux (Tj at 25) at 20W is up to 1,100 lm. The Tj of NeoPac Emitter is controlled at 70℃, the initial decay rate of lumen output is only 9%.

The thermal resistance (Rjc) of the package (NeoPac Emitter) is 0.5℃/W. As driving the power at 20W, the thermal resistance (Rca) of NeoPac Thermal Module is 1.75℃/W. Temperature difference (ΔT) between LEDs p-n junction and the surrounding air is 45℃, since the system thermal resistance (Rja) from junction to ambient of the NeoPac Light Engine is measured at 2.25℃/W. By using system-in-package approach, the heat generated at LEDs p-n junction is effectively pumped away through micro heat pipe and dissipated by aluminum fins to the surrounding airs.

“NeoPac LEDs packaging technology of 1,000 lm in maintain luminous flux is far ahead leading the industry. Since we are talking about thousands of lumens in general lighting applications, a single packaged LED offering 1,000 lm output of maintain luminous flux will become a milestone for accelerating adoption of solid-state lighting technology toward general lighting application,” according to Jeffrey Chen, the chairman and CEO of NeoPac Lighting Group.

For multi-chip, single point-like-source LEDs packaging platform, achieving initial luminous flux at 1,000 with ultra-high power level is not much difficult since the Tj is initially at 25℃. But it is meaningless talking about the initial lumen (Tj at 25) for general lighting applications since for actual application the LEDs junction temperature in ultra-high-power LED package is much higher than 25℃ and even higher than 120℃.

At high Tj, the LEDs output lumen decays dramatically. For single-packaged, ultra-high-power application, high heat density (hot spot) inside the package is always a vital issue being encountered. It is very difficult to solve the high density hot spot problem in package level, module level and even in lighting system level. The temperature gradient from LEDs PN junction point through package and system to the surrounding dissipation air has to be controlled as low as possible. That means both package and system thermal resistance (Rjc and Rja) also have to be well controlled at a very low value accordingly.

“Our technologies are revolutionary breakthroughs in the solid-state-lighting industry. In past two years, we have successfully developed a new LEDs technology platform for general lighting, called NeoPac Universal Platform. Based on this proprietary platform, both LEDs package and system thermal resistance can be tremendously reduced. We are talking about double digits power dissipation for single-packaged LEDs and controlling the LEDs junction temperature at very low level as well. For general lighting applications, we are talking about maintain lumens or useful lumens instead of initial lumen. A high maintain lumen output along with high maintain efficacy will be meaningful to the lighting industry and thermal management is the key for achieving this goal. Basing on NeoPac Universal Platform, we also have been developing NeoBulb Indoor Solution and NeoBulb Outdoor Solution and completed a series of product lines development– NeoBulb Indoor Lighting Devices and NeoBulb Outdoor Lighting Devices. The ultra-high-brightness, point-like-source NeoPac Light Engine solution can also be widely used for a variety of potential applications, fiber optics, digital projectors, automotive headlamps, to name just a few.” Jeffrey Chen states.

The 1,000 lm point-like source NeoPac Light Engine will be demonstrated at the 4th China International Forum on Solid State Lighting (2007Shanghai) during August 22-24, 2007.
 
WI Harper Group Made an Announcement of Investment in NeoPac Lighting Inc., the Leader in LED Genera
Monday, 11 June 2007 00:00

San Francisco, California and Taipei & Hsinchu, Taiwan WI Harper Group made an announcement of its new investment in LED field, NeoPac Lighting Inc. NeoPac is a Taiwan based LED lighting solution company to serve general lighting market by providing its light engines and series outdoor lighting products. Complying with the trend of “Green Products”, “Energy Saving”, NeoPac is world recognized as a pioneer to lead in this new field, which has already accumulated customer bases over 25 countries around the world. The company had just unveiled a world leading 120-watts white color LEDs outdoor lighting device at 6,000 lumens output in early this year. Recently, it further launched a 102-watts warm white model based on the same fixture of the 120-watt predecessor for the applications of street lighting and outdoor area lighting.

“It is the world’s first commercial warm white type LEDs Street Light at driving power over 100 watts. With its LEDs junction temperature (Tj) uniformly kept at under 55°C (as ambient air temperature at 25°C), the ultra-high-power warm white lamp for actual street light application can be realized accordingly. Low junction temperature ensures higher LEDs illumination efficiency and longer useful life.” said Jeffrey Chen, CEO of NeoPac Lighting Group. With the same fixture design as the 120- watt white color outdoor lighting device, this 102-watts warm white color LEDs version was also developed based on NeoPac proprietary NeoBulb Outdoor Solution. This solution to develop LEDs outdoor lighting device for general lighting is based on an innovation technology platform, called NeoPac? Universal Platform. The product provides a mixing warm white spectrum with initial total luminance flux of 4,680 lumens of which 3,000 lm are in white and 1,680 lumens are in amber; the maintain luminance flux can be kept at up to 4,200 lumens. The LEDs Street Light comes with tested IP rating of 65 for dust and water protection. They are built tough with durable metal casing and sealed optic housing to sustain the severest weather condition for any outdoor application. The useful life of the NeoBulb lamp can be lengthened to over 50,000 hrs.

“When comes to product commercialization, especially semiconductor, IT, and electronics related products, Taiwan is the only choice of place to complete all tasks, you never think about the other places in the world; Neopac is fully utilizing Taiwan’s advantages of supply chain management, manufacture outsourcing, LED chipset foundation, and world sales channels, hence, the company could finish the design and production process within a very short time and under a controlled budget” said YK Chu, Managing director of WI Harper Group and head of Taiwan Operation. “NeoPac provides truly salable and usable LED products with low price and on the market today, while other similar products are still in the lab or requiring more sophisticated testing and research effort.”

WI Harper Group is now working closely with NeoPac on market development in China, U.S., Europe and Middle East Areas. Through WI Harper’s network, NeoPac has successfully connected with Siemens in Germany, Government fund of Abu Dhabi, Shenzhen and Shenyang city governments in China. With the great technology, brilliant patent protected ideas, and a solid executive team from NeoPac, combining with WI Harper’s many years experience in world bridge model and strong network, NeoPac is poised to be “The Best Lighting Innovation since Thomas Edison” marked by Mr. Peter Liu, Chairman of WI Harper Group.



About NeoPac Lighting

Established in 2004 and headquartered in Taiwan, the company has offices and factories in Taiwan, HK, and China. Leading the way to LED general lighting by serving its NeoPac? Universal Platform is NeoPac’s vision. And until now, the company already built up world reputation with over 26 countries of product footprints and over 100 valuable LED related global patents. Besides the management team, main investors are WIHarper Group, world leading US VC in bridging world technologies to emerging markets; and Fu Sheng Group, a world leading in sophisticated metal manufacturer and golf club. For further information please go to www.neopac-lighting.com or contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it



About WI Harper Group

 

With close to $400M under management, WI Harper is one of the first U.S.-based venture capital firms to create a value-adding bridge between the United States and Greater China. For nearly a decade, WI Harper has been building companies internationally by facilitating the flow of capital, technology and management best practices across both sides of the Pacific. The Firm is focused on fueling companies at early expansion stage within Internet, wireless, digital media and life sciences / healthcare sectors. WI Harper’s star portfolios include Beijing Xinwei, Bridge Pharmaceutical, Cardiva Medical, Commerce One, Celestry, Cwill, DivX, Focus Media China, Intraware, Fantastic Corporation, iKang Healthcare, Panorama Stock, SirF, Stream Machine, and Verisilicon. For more information, visit www.wiharper.com

 
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