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

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