IES LM-79-08: IES Approved Method for the Electrical and Photometric Measurements of Solid-State Lighting Products. Describes the method of absolute photometry for LED luminaires and integral replacement lamps, and associated electrical measurements. Provides performance data (i.e., light output and efficacy, light distribution, and color characteristics) for the entire, integrated product—vers...

The ASSIST recommends program has actively promoted application-specific methods for testing and evaluating LED lighting technology to allow for easy comparison with traditional lighting. Recent work has produced alternative methods for evaluating outdoor lighting, including parking lot luminaires and the visual effectiveness of lighting.

This paper presents a new method for the simultaneous estimation of lighting direction and shape from shading. The method estimates the shape and the lighting direction using a two step iterative process. We assume an initial (possibly incorrect) estimate of the lighting position. A stiff deformable model is then fitted to the image, assuming this lighting position. Next, a least-squares estima...

In order to solve the problems of large energy consumption existing in tunnel lighting control system, an automatic control system of tunnel lighting is designed based on stepless control method. The tunnel lighting control model is established based on “Specifications for Design of Ventilation and Lighting of Highway Tunnel (China)”. Simulation of tunnel lighting control based on the establish...

General illumination using LEDs has enabled designers to have precise control of the intensity and color of an illuminated area. In this work, I investigate how these systems can dynamically adjust to create optimal lighting conditions in the built environment. By incorporating environmental feedback into a system control loop, i.e., illuminance or luminance measurements, the precise intensity ...

LED lighting can provide pleasant temporal dynamics, though the understanding of what constitutes pleasant has so far remained largely in the experiential domain of lighting designers. Only recently has research begun to uncover what affects preferences for dynamic lighting. Based on the insight that visible, yet subtle, dynamic lighting is desirable, an experiment was conducted which studied t...

By the rise of concerns for global warming, reducing emissions via lowering energy consumption has become a necessity in every sector and the lighting sector is no exception. However, it should not come at the cost of lighting quality and user comfort which is a common practice in today’s lighting design and energy reduction initiatives. The “energy reduction” view should change toward “value d...

The healthcare sector of today has very precise requirement with regard to interior lighting. To fulfill these needs, international standards which specify the strict requirement for each health care facility have come up. Hospital lighting is in particular complex because of the sensitive nature of various patients as well as requirement of high performance from its employees. Hence this makes...

The purpose of the report is to describe the state of the glass lighting parts market in the Balkan countries, to present actual and retrospective information about the volumes, dynamics, structure and characteristics of production, imports, exports and consumption and to build a forecast for the market in the next five years. In addition, the report presents an elaborate analysis of the main m...