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Results for “Solid State Lighting”
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Energy Efficiency of LEDs
Solid-state lighting program technology fact sheet on energy efficiency of LEDs, characterizing the current state of the market and discussing package efficacy, luminaire efficacy, and application efficacy.
LED Directional Lamps
Solid-state lighting program technology fact sheet that provides an overview of the current performance of LED PAR-, BR-, R-, and AR-shaped lamps, which were all investigated by CALiPER in 2012.
LED MR16 Lamps
Solid-state lighting program technology fact sheet that describes the performance of LED MR16 lamps and discusses electronic compatibility concerns.
Recessed LED Downlights
Solid-state lighting program technology fact sheet that briefly discusses different LED product types and their performance relative to downlights utilizing traditional lamps.
General Service LED Lamps
Solid-state lighting program technology fact sheet that compares general service incandescent lamps—i.e., light bulbs—to LED and CFL alternatives.
SSL Standards and Guidelines
Solid-state lighting program technology fact sheet that reviews the key performance and safety standards applicable to SSL-based lighting products.
Understanding LM-79 Reports
Solid-state lighting program technology fact sheet that discusses typical content of laboratory reports summarizing LM-79 test results for integrated SSL lamps and luminaires.
Using LEDs to Their Best Advantage
Solid-state lighting program technology fact sheet that explores the unique attributes of LEDs, which may make them the right choice for some applications.
LED Frequently Asked Questions
Solid-state lighting program technology fact sheet that provides an overview of what retailers, energy efficiency advocates, and consumers need to know to make informed LED buying decisions.
Establishing LED Equivalency
Solid-state lighting program technology fact sheet that provides guidance for comparing products based on LED or other light source technologies.
Lifetime and Reliability
Solid-state lighting program technology fact sheet that discusses failure, lifetime, and reliability as they relate to LED-based products.
True Colors
DOE Solid-State Lighting Program technology fact sheet on LEDs and the relationship between CCT, CRI, optical safety, material degradation, and photobiological stimulation
LED Color Stability
DOE Solid-State Lighting program technology fact sheet that addresses key questions about color stability and color shift in LED lighting applications.
Sorohalide scintillators, phosphors, and uses thereof
The present invention relates to sorohalide compounds having formula A.sub.3B.sub.2X.sub.9, where A is an alkali metal, B is a rare earth metal, and X is a halogen. Optionally, the sorohalide includes a dopant D. Such undoped and doped sorohalides are useful as scintillation materials or phosphors for any number of uses, including for radiation detectors, solid-state light sources, gamma-ray spectroscopy, medical imaging, and drilling applications.
Prognostics of damage accural in SSL luminaires and drivers subjected to HTSL accelerated aging
This paper will show an investigation of off-the-shelf luminaires with the focus on the LED electronic drivers, specifically the aluminum electrolytic capacitors (AECs), that have been aged using high temperature shelf life (HTSL) testing of 135°C in order to prognosticate the remaining useful life of the luminaires. Luminaires have the potential of seeing excessive temperatures when being transported across country or being stored in non-climate controlled warehouses. They are also being used in outdoor applications in desert environments that see little or no humidity but will experience extremely high temperatures during the day. This makes it important to increase our understanding of what effects being stored at high temperatures for a prolonged period of time will have on the usability and survivability of these devices. The U.S. Department of Energy has made a long term commitment to advance the efficiency, understanding and development of solid-state lighting (SSL) and is making a strong push for the acceptance and use of SSL products. In this work, the four AECs of three different types inside each LED electronic driver were studied. The change in capacitance and the change in equivalent series resistance (ESR) of the AECs were measured and considered to be a leading indication of failure of the LED system. These indicators were used to make remaining useful life predictions to develop an algorithm to predict the end of life of the AECs. The luminous flux of a pristine downlight module was also monitored using each LED electronic driver that was subjected to HTSL through the progression of the testing to determine a correlation between the light output of the lamp and the failing components of the LED electronic driver. Prognostic and Health Management (PHM) is a useful tool for assessment of the remaining life of electrical components and is demonstrated for AECs in this work.
Strategic R&D Positions America for Global Success
Overview of R&D strategies DOE has undertaken to advance the United States as a leader in solid-state lighting technology.
Energy Savings Forecast of SSL in General Illumination Report Summary
Summary of the DOE report Energy Savings Forecast of Solid-State Lighting in General Illumination Applications, a biannual report that models the adoption of LEDs in the U.S. general-lighting market, along with associated energy savings, based on the full potential DOE has determined to be technically feasible over time.