Lightning Quality

in #steempress6 years ago (edited)

We can devide and examine lightning issue into two saparete parts.

  1. Lighting Quality
  • Light Color
  • Ability to See Colors
  • Glare/Design (Impacts People & Productivity)
2. Lighting Quantity
  • Technology
  • Design
  • Maintenance
 


a bulb

 

We have two main indicators about lightning qyality:

Color Rendering Index (CRI)

Indicates the effect on the color appearance of objects illuminated by the light source.

90 – 100 CRI = Excellent color rendition
75 - 85 CRI = Good color rendition
55 – 70 CRI = Fair color rendition
0 – 55 CRI = Poor color rendition
 



CRI


 

Correlated Color Temperature (CCT)

The color appearance of light emitted from a light

< 3200K = “warm” or red side of spectrum

> 4000K = “cool” or blue side of spectrum

 



CCT


 

Also we have some consideration point. These can be sorted like below:

  • Uniformity
  • Color rendering index
  • Color temperature
  • Glare
  • Light source selection
 

Please keep on track for my next posts...

@steemitci


Posted from my blog with SteemPress : http://steemblog.online/?p=170