lec6 - Key objectives in lighting design Qualifications no...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Key objectives in lighting design Qualifications ± no strong "contrasts" ± good "color rendering" ± adequate "light levels" ± no "disturbing reflections" ± no direct "glare"
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Radio- and photometric quantities Radiometry vs. Photometry ± absolute (energy) vs. ± V( λ )-dependent (light) 350 400 450 500 550 600 650 700 750 800 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Wavelength [nm] Relative Efficiency [-] Figure by MIT OCW.
Background image of page 2
Radio- and photometric quantities Four major quantities ± flux ± illuminance ± intensity ± luminance Figure by MIT OCW.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Radio- and photometric quantities Flux ± energy / unit of time ± φ in Watts [W] vs. lumen [lm]
Background image of page 4
Radio- and photometric quantities Flux ± energy / unit of time ± φ in Watts [W] vs. lumen [lm] ± 683 lumen/Watt at 555 nm : φ lum [lm] = 683 Σ V( λ ) φ e [W] 75 watts 1055 lumens 70 watts 5600 lumens Incandescence Discharge very different efficacies ! Figures by MIT OCW.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Emission spectra 400 500 600 700 1.0 2.0 3.0 nm 400 500 600 700 1.0 2.0 3.0 nm 300 400 500 600 1.0 2.0 3.0 nm 250 300 350 400 1.0 2.0 3.0 nm Relative Energy Continuous Discontinuous Combined Rays Figure by MIT OCW.
Background image of page 6
Radio- and photometric quantities Flux Illuminance ± flux received / unit of surface ± E in [W/m 2 ] vs. [lm/m 2 ] or lux [lx] Δφ Δ S Figures by MIT OCW.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Flux Illuminance ± flux received / unit of surface ± E in [W/m
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/05/2009 for the course COA 4403 taught by Professor Test during the Spring '09 term at Georgia Tech.

Page1 / 26

lec6 - Key objectives in lighting design Qualifications no...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online