2017-10-17

Rethinking Exposure to Saturated Colored Light

Two key physical properties of light participate in color vision: wavelength and power. They factor into a light source’s spectral power distribution, which describes the amount of light power at each wavelength in the visible spectrum (which ranges from approximately 380 nanometers to 780 nanometers) that is emitted by that particular source. Power is a measure of the amount of light from each wavelength that arrives at a defined location per unit time.
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2017-10-13

New LRC Study Evaluates the Blue-Light Hazard from Solid-State Lighting

The introduction of solid-state lighting using light-emitting diode (LED) technology has ignited widespread interest in the ways that lighting can offer benefits to people, including improved visibility at night, enhanced perceptions of brightness and security, and spectral tuning for management of circadian rhythms. Yet, as illustrated in a recent report from the American Medical Association (AMA), the increasing popularity of LED lighting is also raising new questions and reviving older concerns about unwanted impacts of these light sources, such as light pollution, discomfort glare, circadian disruption, and retinal damage via a mechanism known as blue-light hazard.
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2017-09-19

LRC Collaborating With Cornell to Develop Phenotyping System to Bear the Next Generation of Grapes

The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute is collaborating with Cornell University on a $6.5 million grant from the U.S. Department of Agriculture’s National Institute of Food and Agriculture, Specialty Crop Research Initiative to develop the next generation of grapes. The project, VitisGen2, is a collaboration of 25 scientists from 11 institutions who are working in multidisciplinary teams to accelerate development of new grape varieties that are more flavorful and sustainable.
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2016-12-09

LRC Releases Free Lighting Circadian Stimulus Calculator

The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute has recently released a free, open-access circadian stimulus (CS) calculator to help lighting professionals select light sources and light levels that will increase the potential for circadian-effective light exposure in architectural spaces, utilizing the CS metric. Developed by LRC researchers, the CS metric is a new way to quantify light’s impact on acute melatonin suppression, a marker of circadian system activation.
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2016-12-09

LRC Scientist to Moderate Panel Session on the Health Impacts of LED Roadway Lighting

LED technologies are rapidly growing in terms of market share for roadway lighting systems in the U.S., with about 15% of roadway lights using LED sources. Unlike the yellowish glow of high pressure sodium lamps found in most of the other U.S. streetlights, LED illumination usually is white in color. This difference has sparked concerns about health and wellbeing from the American Medical Association (AMA).
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2016-11-02

Rensselaer LRC Expands Paid Externships in Lighting Degree Programs

The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute has recently expanded its M.S. in Lighting degree program to include a paid career externship at a leading lighting manufacturer, design firm, or government organization. Upon graduation, students now have the opportunity to participate in a paid externship for three months or more with one of many lighting organizations that have agreed to host LRC students, including Current by GE, OSRAM, Philips Lighting, the New York State Energy Research and Development Authority, Bridgelux, Hubbell Lighting, Ketra, USAI Lighting, and numerous others.
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2016-09-29

LRC Expands Research to Encompass Connected Lighting, 3D Printing

In a 25,000-square-foot commercial office on the Rensselaer Technology Park campus in Troy, N.Y., scientists from the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute are making plans to install LED lighting with fixture-integrated and network-connected lighting controls. The controls are being tested in a broad-based field evaluation to compare and quantify the additional benefits that connected lighting systems offer to users. LRC research scientists will investigate everything from ease of installation to user satisfaction. This is just one of many projects that the LRC’s Solid-State Lighting Program has undertaken to expand its research capabilities into new fields where solid-state lighting (SSL) can provide benefits.
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2016-09-26

LRC Presents Innovative Research Findings at SPIE Optics + Photonics Conference

Two doctoral students and several research scientists from the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute attended last month’s SPIE Optics + Photonics conference to present research on new innovative technologies and other topics of interest to the solid-state lighting industry. The presentations were part of the Fifteenth International Conference on Solid State Lighting and LED-based Illumination Systems, which took place August 31 in San Diego, California.
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2016-09-22

LRC Calls for Volunteers for Study on Effects of Light from iPad Screens

The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute is recruiting subjects 18-30 years old to participate in a paid study that will take place on four consecutive Fridays: September 30, October 7, October 14, and October 21. The goal of the study is to test the effects of light from Apple iPad screens on melatonin production.
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2016-07-04

LRC Responds to AMA Report on Health Hazards Caused by LED Lighting

  Recently the American Medical Association (AMA) has produced a document cautioning the public about In-Ga-N based LEDs used as sources of illumination. The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute has received a large number of requests for an opinion. Professors Mark Rea and Mariana Figueiro of the LRC have prepared a response, available here. Key points include: Predictions of health consequences from light exposure depend upon an accurate characterization of the physical s...
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2015-11-13

LRC Launches Interactive Lighting Design Website to Support Elderly Care Facilities Illumination

Older adults in long-term care facilities often spend their days and nights in dimly-lit rooms with minimal time spent outdoors. The constant, unvarying dim light found in many long-term care facilities means that older adults are not experiencing the robust daily patterns of light and dark that synchronize the body’s circadian clock to local sunrise and sunset. Disruption of this 24-hour rhythm of light and dark affects every one of our biological systems from DNA repair in single cells to melatonin production by the pineal gland, to electrical activity in the brain. 
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2015-06-24

LRC Evaluates Audi Advanced Headlight Systems for Transportation Lighting Alliance

Through its Transportation Lighting and Safety program, the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute is evaluating the potential for new lighting technologies and approaches to improve driving safety at night, including new car headlight systems. For the study, vehicle manufacturer Audi AG has provided the LRC with an A7 equipped with adaptive high beam “matrix lights” that allow drivers to benefit from using high beams all the time while selectively dimming a portion of the beam in the direction of other drivers to prevent glare. In the Audi system, the beam pattern is split into numerous individual LEDs arranged in a grid or “matrix” that adapts to the surroundings in real-time. The lighting system is being evaluated by LRC researchers this June.
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2015-06-12

LRC Study Shows Uniform Lighting in Parking Lots Provides Better Sense of Security

A newly published study from the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute shows that improving the uniformity of lighting in parking lots can increase the sense of safety and security, as well as provide up to an additional 75% energy savings by lowering total light levels.
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2015-06-11

LRC Program ASSIST Proposes New Method for Evaluating Flicker

The Alliance for Solid-State Illumination Systems and Technologies (ASSIST), a program of the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute, has released a publication that proposes a new method of evaluating human perception of directly observed light source flicker. The publication, ASSIST recommends…Recommended Metric for Assessing the Direct Perception of Light Source Flicker, provides specific measurement procedures and calculations to objectively determine whether the amount of flicker from a light source is above or below the threshold of human perception. The metric is applicable to any waveform shape and frequency and is based on peer-reviewed laboratory and human factors experiments.
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2015-04-28

LRC Issues New Guide To Selecting LED Troffers

The Lighting Research Center at Rensselaer Polytechnic Institute has released a new guide for contractors and specifiers who are replacing existing fluorescent troffers with new LED troffers or retrofit kits.
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2014-05-07

Studying Lighting Impact on Health at LRC

On May 6, a group of 30 lighting and healthcare industry professionals will travel to the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute in Troy, N.Y. to attend the launch of the first “flagship” Light and Health Institute a two-day, hands-on seminar to teach the many ways in which light affects, and can be used to improve, health and wellbeing. The seminar is taught by Dr. Mariana Figueiro, LRC Light and Health Program director and professor at Rensselaer; Dr. Bernard Possidente, professor of biology at Skidmore College; Dr. Mark Rea, LRC director and professor at Rensselaer; and Andrew Bierman, LRC research scientist.
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2013-10-24

LRC Launches Plant LED Lighting Program

Light and plants expert Tessa Pocock, Ph.D., recently joined the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute as a senior research scientist, leading the development of a new plant physiology lighting program. Her research focuses on plant photosynthesis, and plant development and regulation by light for traditional greenhouse crops and the emerging field of medicinal plants.
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2013-10-15

LRC Evaluates Safety Impacts of Advanced Car Headlight Systems

Crash risks while driving at night are higher than during the daytime, but most roadways in the U.S. do not have roadway lighting. In fact, many state and local governments find it difficult to pay for installing, operating and maintaining roadway lighting. Despite these concerns, the proportion of nighttime driving is not likely to go down in today's round-the-clock economy, making car headlights increasingly important to nighttime driving safety. Through its Transportation Lighting and Safety program, the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute is evaluating the potential for new lighting technologies and approaches to improve driving safety at night, including new car headlight systems.
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2013-06-27

LRC’s ASSIST Releases a Publication to Help People in Selecting LEDs

The Alliance for Solid-State Illumination Systems and Technologies (ASSIST), a program of the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute, was established by LRC in 2002. As the collaboration between researchers, manufacturers, and government organizations, ASSIST’s mission is to conduct collaborative research to enable the broad adoption of LEDs. ASSIST is sponsored by many LED manufacturers including Acuity Brands Lighting; Amerlux; Cooper Industries; Cree; Dow Corning; GE Lighting Solutions etc. ASS...
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2012-07-30

LRC Releases LED Airfield Lighting Report

Recently, the Lighting Research Center (LRC) from Rensselaer Polytechnic Institute has cooperated with the Federal Aviation Administration (FAA) to jointly study the use of LED lighting in airfield installations, and has released LED Airfield Lighting report. The report was published by the Transportation Research Board (TRB) of the National Academies through the Airport Cooperative Research Program (ACRP), which funded the study. A panel of experts from aviation, government, industry, and academia appointed by the National Academies oversaw the...
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2009-11-24

Design Lights Consortium Launches Listing of Qualified Lighting Products

Northeast Energy Efficiency Partnerships (NEEP) and the DLC, along with assistance from their project team at the Lighting Research Center (LRC), has developed a new independent listing of qualified solid state lighting (SSL) products.
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2008-12-29

LRC’s LED Lighting Institute goes on road to North Carolina

Rensselaer Polytechnic Institute’s Lighting Research Center (LRC) has enhanced its outreach education by taking the LED Lighting Institute “on the road.” In addition to the traditional three-day seminar held each spring and fall at the LRC, a two-day LED Lighting Institute program option has been added, which will be hosted at a program sponsor site each year.
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Cree announces the commercial availability of the XLamp® XD16 LED, the industry’s first Extreme Density LED, which delivers up to 5 ½ times higher lumen density than Cree’s previous generation of high power LEDs.

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LG Innotek today announced that the company has developed the world's first 100mW (mill watts) UV-C LED. This development is 2 years ahead of the industry forecast that predicted its development would be successful by 2020.

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