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LD+A Research Matters: Circadian Lighting Design - Leveraging the Melanopic Efficacy of Luminous Radiation Metric

Lighting design projects often include multiple design constraints. For example, a lighting design should meet target light levels, limit glare and provide appropriate color fidelity while not exceeding the power or energy budget defined for the project. For select projects, circadian considerations have recently been added to the design criteria list. Circadian lighting is defined as lighting that influences a non-visual, physiological response within the human body.

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IES LD+A Research Matters: California's 'Million LED Challenge' Sets an Ambitious Goal

This year, California demonstrated leadership as the first state in the country to set appliance efficiency regulations for general service lamps that ensure both lighting quality and efficiency.  To build on this leadership and accelerate the adoption of the high-quality, energy efficient LED lamps, in July 2018 the University of California launched a new procurement program known as The Million LED Challenge.  The program supports the UC Office of the President’s Carbon Neutrality Initiative, which commits the UC to emitting net zero greenhouse gases from its buildings and vehic

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LD+A Research Matters: A New R&D Center for Mexico's Lighting Industry

In the fall of 2017, the Mexican Ministry of Energy awarded funding to the Universidad Autónoma de Guadalajara in collaboration with the University of California Davis to establish a lighting technology and design research center known as the Centro de Tecnología en Iluminación (CTI). This is a multi-year, public-private investment focused on addressing growing climate change concerns through translational research committed to clean energy and sustainability in Mexico.

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IES LD+A Research Matters: LiDAR Shows Potential for Increasing Sensor Coverage Area in Outdoor Applications

LiDAR has made the news in recent months as part of various high-profile archeological and geological projects. From discovering Mayan ruins to mapping our coastal seashores, LiDAR is the tool of choice. The technology also plays a critical role in autonomous vehicles, security systems and agriculture. LiDAR, shorthand for Light Detection and Ranging, may also prove useful in common lighting applications including potential use as a long-range occupancy detector to control outdoor lighting.

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Integrated Outdoor Lighting Solutions

The CLTC is providing an environment to test and evaluate an outdoor lighting solution comprised of components from multiple manufacturers. This test program is evaluating technology components from leading lighting manufacturers to evaluate performance and interoperability of smart lighting components from multiple manufacturers.  The solution for this test is comprised of outdoor light fixtures from Leotek, Xitanium SR LED Drivers from Philips Advance, network lighting controls from Silver Spring Networks and a CIMCON lighting controller.

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Linear LED Lamps: Application and Interoperability Evaluation

CLTC collaborated with the Emerging Technologies group at the Pacific Gas & Electric Company to evaluate linear LED lamps in a variety of fixture applications as well as identify any interoperability issues.

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IES LD+A Research Matters: Commercial Lighting's Role in Automated Demand Response Programs

After nearly two decades of support and research focused on automated demand response (ADR), lighting remains underutilized as a demand response resource. Beginning in 2007 with the publication of the first open standard dedicated to ADR connectivity and communication (www.openadr.org), research and development efforts have resulted in a myriad of products and strategies designed to promote and advance ADR; however, recent studies demonstrate that commercially available, lighting-specific ADR products remain sparse.

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Adaptive Lighting for Energy-Efficient Comfort and Wellbeing

Adaptive lighting refers to electric lighting sources that automatically adjust their output based on environmental changes, aiming at maximizing comfort, wellbeing and energy efficiency.  This presentation provides an overview of the concept, focusing on adaptive lighting controls based on sensing occupancy and daylight. The overview reflects the adaptive lighting research, development and demonstration efforts of the California Lighting Technology Center.

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LD+A Research Matters: Building Controls Integration for Comfort and Energy Efficiency

The California Lighting Technology Center shared their current research efforts focused on Building Controls Integration for Comfort and Energy Efficiency in the Research column for the LightFAIR International 2017 edition of the LD+A magazine, published May 2017.

The article is authored by CLTC's co-director Konstantinos Papamichael and Senior Development Engineer Nicole Graeber.

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Achieving Energy-Efficient Lighting in California

To address California’s critical need for targeted, practical technology improvements that reduce lighting energy use and advance building energy-efficiency, in 2009, the California Energy Commission initiated a comprehensive lighting research, development, demonstration and outreach program in partnership with the California Lighting Technology Center.