Lightning Quality

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

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

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