Lighting

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Lighting

• Minolta Industrial Lighting products

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Introduction

• Dimensions of lighting
• Different types of measurements depending on use
• Aquariums, TV stations, Imax, computer screens,
  traffic lights, lighted buttons, operating rooms,
  circus.
• Often Regulated

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Agenda

• Color temperature
• Color, Correlated Dominant Wavelength
• Gamma Contrast of light
• Purity
• Luminous Flux Illuminance

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Relative spectral response

• Instruments differ from photographic meters since
  they are corrected for the way the eye sees not
  the way film exposes

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Color Temperature

• Low temperature is warmer light yellow red
• Higher temperature in the blue
• Standard unit is K for Kelvin
• The temperature needed to heat a black box to get
  the same visual color

D
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Correlated temperature

• Corrected for small differences in locus

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Dominant wavelength

• The "x" marks the color in question.
• For the white point indicated, the dominant
  wavelength for "x" is on the nearer perimeter,
  around 600 nm, while the complementary wavelength
  is opposite, around 485 nm. Intuitively, the
  dominant wavelength of "x" corresponds to the
  primary hue of "x

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Color- X Y Z

• Xf (xyz)
• Y F (xyz)
• Traditional chromaticity diagram

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UCS chromaticity coordinates

• U,v Function of ( x,y,z)

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Illuminance

• Ratio of radiant power to area of the detector
• Termed Ee
• Watts/sq meter or LUX

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Luminance

• The surface can itself be light-emitting, or
  transmitting - like the surface of a lamp or the
  sun - but it can also reflect light from another
  source (like a road reflecting light from a
  street light and thus act as a secondary light
  source). It is designated by the symbol L.

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Luminous flux F

• Unit of measurement lumen lm
• All the radiated power emitted by a light source
  and perceived by the eye is called luminous flux
  F.

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Luminance L

• Luminance is the concept for the luminous
  intensity emitted per unit of area of a surface
  in a specific direction.
• The unit is candela per square metre (cd/m2).

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Screens, LED, Bulbs,

• Very popular for visual screens such as
• cell phones
• Ipods
• TV
• flat screens

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Topic One

• Explain details
• Give an example
• Exercise to re-enforce learning

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Topic Two

• Explain details
• Give an example
• Exercise to re-enforce learning

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Summary

• State what has been learned
• Define ways to apply training
• Request feedback of training session

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Where to Get More Information

• Other training sessions
• List books, articles, electronic sources
• Consulting services, other sources