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Understanding the Science and Art of Lighting Design

This overview explores the fundamental principles of light, its physics, and its practical applications in lighting design. Light is described as radiant energy that influences mood, task performance, and behavior. The designer's role involves balancing artistic vision with functionality, using various lighting sources like incandescent and fluorescent lamps. Key concepts include brightness, color temperature, and light reflection. Understanding the trade terms and characteristics of light aids in creating effective lighting solutions that are both economical and aesthetically pleasing.

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Understanding the Science and Art of Lighting Design

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Presentation Transcript

  1. Lighting • A quick overview • The Physics • The Practical

  2. What is Light • "Light is visually evaluated radiant energy.“ • Electromagnetic Spectrum http://www.glenbrook.k12.il.us/gbssci/phys/Class/light/u12l2a.html http://www.arce.ukans.edu/book/contents.htm

  3. What is the Purpose of Light • Allow Performance of Tasks • Mood • Disguise • Emphasize

  4. Basic Physics • Light enters eye, usually reflected from something • Converted to electrical impulse • Processed by Brain

  5. The Lighting Designer’s Task • Artistic - Achieve an effect • that creates a “mood” • That influences behavior • Functional • Put enough light of the right kind on the “work surface” so a person can work. • Do it economically. • This is where the engineer focuses

  6. Characteristics of Light that matter • Energy magnitude - brightness • Relative levels • Produces contrast • Absolute • Wavelength - Color

  7. Methods of Light Production • Older Ways • Daylight • Wood burning • Gas burning • Candle • Gas from tube

  8. Terms of the Trade • IES • Illuminating Engineering Society of North America • Lamp = Bulb • Luminaire = The fixture holding the bulb • Efficacy = Number of “lumens per watt” • Color Temperature = The temperature of a solid block producing the same color light.

  9. Color from Lamps

  10. Key Issues in Practice • How light reflects from surface • Reflection • Absorption • Diffusion

  11. Why Do we Use different Lamps? • Cost • Initial Cost • Efficiency = Operating Cost • Color Rendition • Ability to focus light • Longevity

  12. Lamps – Low Efficiency • Incandescent • Standard • Halogen

  13. Lamps – Higher Efficiency • Low Pressure Discharge • Fluorescent • Low Pressure Sodium • High Pressure Discharge • Mercury Vapor • Metal Halide • High Pressure Sodium

  14. Luminaires • Used to direct light • Up • Down • Sideways • Combination

  15. Material Resources • Ching – A Visual Dictionary of Architecture • Mechanical & Electrical Equipment for Buildings

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