Advancing the effective use of light for society and the environment.

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General News
Bridges in Light symposium

The inaugural Bridges in Light symposium is a groundbreaking event that will bring together the lighting industry’s best minds to explore the social and technological drivers affecting the the lighting industry.

Learn more about this exciting opportunity to help shape the future of lighting and the lighting industry at

Bridges in Light gets underway Wednesday morning, October 22 in historic Saratoga Springs, just a few miles from the LRC.

That evening, a very special gala celebrating the LRC's 15th anniversary will feature NASA astronaut Dr. Nancy Currie, veteran of several shuttle missions. Dr. Currie will speak about the challenges of lighting in space.


LRC develops new LED system evaluation method

The LRC has developed new methods to evaluate LED lighting systems that will eventually lead to reliable life estimates. Dr. N. Narendran and LRC graduate students developed new methods for measuring LED junction temperatures. Heat at LED junctions is the primary cause of LED light output degradation. Traditional methods for measuring junction temperature were not appropriate for entire systems because they required disassembling the system. “With LED systems growing increasingly popular, accurate life predictions are becoming vital,” says Dr. Narendran.

Results of these studies will be presented in August at the International Society for Optical Engineering (SPIE) Annual Meeting, The Third International Conference on Solid-State Lighting.

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LED Lighting Institute set for September

The LRC's popular LED Lighting Institute, a three-day intensive workshop, is scheduled for September 17-19, 2003. Seating is limited, so reserve your seat now.

LRC experts will help you learn more about this quickly evolving lighting technology, and you will earn three continuing education units in LED lighting. Topics include incorporating LED technologies into architectural lighting fixtures, developing optical components that take advantage of LEDs, and designing lighting applications using LEDs.

Register or learn more about the LED Lighting Institute.

NLPIP releases two new Lighting Answers: LED Lighting Systems & Adaptable Ballasts

NLPIP has released two new Lighting Answers.

Lighting Answers: LED Lighting Systems presents performance characteristics and discusses the effective use of LEDs in lighting applications. Electrical, thermal, and optical properties are discussed as well as LED lighting system component availability. View Lighting Answers: LED Lighting Systems.

Lighting Answers: Adaptable Ballasts discusses a class of electronic ballasts for fluorescent lighting systems. These products are compatible with multiple fluorescent lamp types, lamp quantities, and/or input voltages. Test results and suitable applications are presented for this energy-efficient technology. View Lighting Answers: Adaptable Ballasts.

Lighting Answers provide practical information about a variety of lighting technologies. View Lighting Answers publications list.

Daylighting for comfort, productivity, and energy-efficiency

Using daylighting in buildings can increase comfort and productivity, reduce energy consumption, and make the building more marketable. Those are some of the findings in the Daylight Dividends Focus Group Research Project Final Report published recently.

The LRC established the Daylight Dividends program to improve indoor environmental quality and reduce electric lighting energy consumption by increasing the use of daylighting. The LRC coordinates the Daylight Dividends partnership, led by the US Department of Energy and NYSERDA (NY State Energy Research and Development Authority). Partners include the California Energy Commission, Connecticut Light & Power, the Iowa Energy Center, and the Northwest Energy Efficiency Alliance.

The report, prepared by Spectrum Associates Market Research, presents the findings of a focus group study, conducted in March 2003, which explored barriers to using daylighting in commercial, industrial and institutional buildings, and identified ways to overcome those barriers. Read the Focus Group Research Report.

Light pollution tools for street lighting

LRC researchers have developed a set of tools for people and localities planning to install or change street lighting. The tools include a white paper, a planning checklist, and a design guide that provide practical information to municipalities, specifiers, designers, and other lighting decision makers about street lighting and light pollution.

The LRC explores light pollution and energy-efficient outdoor lighting to provide designers and decision makers with information that is based on sound scientific study.

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Peter Boyce awarded highest honor from IESNA

The Illuminating Engineering Society of North America (IESNA) recently conferred its highest honors upon LRC Professor Peter Boyce: the 2003 IESNA Medal Award. The award is given each year to recognize those who have made “meritorious technical achievement that has remarkably furthered the profession, art, or knowledge of illuminating engineering.”

Dr. Boyce was chosen for the Medal Award for his 35 years of work that has set the standard internationally for research into the impact of lighting on human performance and behavior. He will receive the award in August at the Honors Luncheon at the IESNA Annual Conference in Chicago. The IESNA Medal is considered the highest honor in the lighting profession.

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Product breakthrough: Self-commissioning digital photosensor

The LRC has developed an easy-to-install and easy-to-use photosensor unit that promises greater acceptance by end users. With the press of a single button, the photosensor automatically adjusts its settings for maximum energy savings while maintaining appropriate electric light levels.

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LEDs rapidly advancing to meet lighting needs

"The LED is poised to create a major impact in the lighting world—particularly with the advancement of white-light LED technology," says Dr. Nadarajah Narendran, director of research at the Lighting Research Center. The current show of progress in the solid-state lighting field is promising, leading to predictions that LEDs will soon push forward into new territories beyond their current status as indicator lamps.

This news was presented at the International LED Expo 2003, the first global tradeshow and conference dedicated to LED technology. Dr. Narendran along with Dan Frering, manager of education, and Russ Leslie, associate director, traveled to Seoul, Korea, in June for the conference, where Dr. Narendran gave the keynote address.

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LRC holding seminars at Philips' Somerset, NJ location

The Lighting Research Center is offering six lighting education seminars at Philips Lighting Company in Somerset, NJ. The two- or three-day seminars will take place in September through December. Attendees can earn continuing education credits toward AIA and NCQLP recertification. Reserve your seat now by registering online at Course titles include: Industrial Lighting Applications, Lighting and Sustainability, Lighting for Safety, Security, and Risk Avoidance, Preparation for the NCQLP Lighting Certification (LC) Examination, Lighting, Health, Wellness, and Productivity, and Using Lighting to Improve Living and Working Environments for Older Adults.

N. Narendran elected Fellow of IESNA

LRC Director of Research Nadarajah Narendran, Ph.D., recently received the Illuminating Engineering Society of North America’s (IESNA) 2003 Fellow designation. The designation is given annually to a member of the society who has made a valuable contribution to the society’s technical activities and to the illumination science and engineering profession. Dr. Narendran was chosen as a Fellow for his pioneering research and educational activities in the area of solid-state lighting. He was also cited for his leadership in bridging the science of solid-state lighting to mainstream lighting applications.

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How bright is that room?

How bright do you like a room to be lighted? As demands for energy savings increase, room brightness often decreases. Researchers at the LRC are examining how people perceive room brightness. This understanding could lead to improvements of the structures in which we live and work, as well as more energy-efficient lighting systems.

Dr. Yukio Akashi says our brain relies not only on the amount of light reaching our eyes, but also on specific brightness cues to perceive how brightly a space is illuminated. “Our brain," says Dr. Akashi, "takes into account certain cues such as light reflecting off various surfaces.” Shadows, shading, highlights, sparkle, and glint all work together to suggest the light’s direction and location.

To illustrate this, Akashi points to a work of art that appears to be a plaster statue sitting on the edge of a picture frame. Space behind the picture frame appears dark, and a spotlight seems to highlight its form and casts shadows. But don't be too on to find how perception can fool you.

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LRC celebrates 15 years of lighting excellence

The Lighting Research Center, founded in 1988, is now in its 15th year of lighting research and education. LRC contributions over the years have led to many advances in lighting technologies, design, and application, and we thank our staff, faculty, students, sponsors, and Partners for our many successes and lessons learned. We look forward to the next 15 years and are already hard at work on projects that promise to shape the future of lighting.

About the LRC

The Lighting Research Center (LRC) is part of Rensselaer Polytechnic Institute and is the leading university-based research center devoted to lighting. Founded in 1988, the Lighting Research Center has built an international reputation as a trusted and reliable source for objective information about lighting technologies, applications, and products. Its mission is to advance the effective use of light and create a positive legacy of change for society and the environment

© 2003 Rensselaer Polytechnic Institute, Troy, NY 12180 USA.

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