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Color Rendering (Ra)

 

 

  • Color rendering, expressed as a rating from 0 to 100 on the Color Rendering Index (CRI), describes how a light source makes the color of an object appear to human eyes and how well subtle variations in color shades are revealed.
  • Ra can be found in the specifications of the luminaire. The higher the number the less color distortion.
Car park diagram

All Philips LED luminaires have a CRI of > 80.

Car park diagram

Good color rendering Ra > 80

We don’t measure Ra on site but we can observe and experience it: 

Look at the skin of your hands.How do they look? Natural, or brownish? Yellowish? How do you perceive the colors around you?
Poor lighting

Poor color rendering Ra < 80

                         

 

 

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October 10

Visual Comfort and Artificial Lighting

Presented by Sarvdeep Basur

 

November 16

Zen and the Art of Lighting Design

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December 6

Light in Space

Presented by Maarten Jamin, Vesna Petresin, Gernot Oberfell

 

January 17

Light Pollution - The Effects on Animals and Humans

Presented by Kamiel Spoelstra, Steven Lockley

 

February 20

A Fine Dining Experience (The Art of Consulting as a Lighting Designer)

Presented by Dr. Emrah Baki Ulas


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