Lighting Design

Photo: Adrian Grycuk. License: CC BY-SA 3.0.

OVERVIEW

Energy-efficient lighting is seriously misunderstood by many in the green building industry. Long associated with CFLs and poorly lit spaces, today’s energy-efficient lighting uses state-of-the-art LEDs, controllers, and optics to direct light just where you need it.

Outdoors, LED streetlamps use advanced sensors and are optimized for maximum efficiency, yet they produce little light pollution that could disrupt local wildlife.

Indoors, LEDs can be integrated into DC power systems via power-over-ethernet cables. The color can be changed to help increase worker productivity, improve patient moods, or mimic natural outdoor light to help maintain our natural circadian rhythms.

New forms of LED and OLED lighting are revolutionizing how we light our buildings.

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  • Circadian Rhythm and the Role of Lighting

    Primer

    LEDs with color tuning are now being sold, but do we really have the light formula for waking us up and putting us to sleep?

  • Induction and OLEDs: Past and Future Lighting Technologies

    Primer

    Fluorescent and LED lighting get most of the attention, but there are other efficacious lighting technologies that could illuminate our future.

  • How Electric Lighting Works

    Primer

    How do incandescent, fluorescent, high-intensity discharge, and light-emitting diode lighting technologies work, and what are their relative efficiencies?

  • Shedding Light on Light Quality

    Primer

    Two terms commonly used to refer to light sources-color temperature and color rendering index-tell us about the quality of light, but can at times be counter-intuitive. Lights with a low color temperature, for example, actually feel "warmer" on the color spectrum.

  • Light-Emitting Diodes: Chasing White Light

    Primer

    LED lighting is becoming more energy-efficient and cost-effective, but it has not yet realized its potential for efficacy, and for wider applicability.