More brands from
Philips Lighting
For professionals
For consumers
Products
Products
Lighting products
Lighting products
Product catalog
Indoor luminaires
Outdoor luminaires
LED Lamps and Tubes
Conventional lamps and tubes
Lighting electronics
Lighting controls
Consumer lighting
Specialist applications
Specialist applications
Digital projection
Entertainment
Horticulture
Luminous textile
OEM products
OneSpace luminous ceiling
Special lighting
Highlighted products
Highlighted products
Coreline
Interact Ready
Iridium gen3
LED lamps
LED tube
Ledinaire
Metronomis LED
TrueForce
Support
Support
Service tag
Installer programme
System areas
System areas
Public spaces systems
Public spaces systems
Roads & streets
Tunnels
Arena & stadiums
Recreational sports
Parks & plazas
Bridges, monuments & facades
Education
Airports
Municipal buildings
Office and industry systems
Office and industry systems
Office
Industry
Parking
Healthcare
Retail and hospitality systems
Retail and hospitality systems
Food & large retailers
Fashion
Petrol & convenience stores
Hospitality
Shopping malls
Museums
About our systems
About our systems
Our systems
Lighting themes
Connected lighting
Smart Cities
Services
Services
Services
Services
All Services
Professional Services
Lifecycle Services
Managed Services
Financial services
Financial services
Philips Lighting Capital
Applications
Applications
Philips Lighting Catalogue
Inspiration
Inspiration
Inspiration
Inspiration
Case studies
Lighting technology
Urban inspiration
Luminous magazine
Pioneers of light
Education
Education
Education
Education
Lighting Academy
Support
Support
Purchase
Purchase
Installer programme
Partners
Tradelink
Where to buy
Support
Support
Tools
FAQs
Warranty
Legislation
Service tag
Suppliers
Privacy center
Connect
Connect
Contact us
Events
About Signify
For professionals
For consumers
United Kingdom
...
Home
Support
Purchase
Installer Trade
Support
9. White light and colour
Suggestions
FAQ
< Back to FAQ overview
White light and colour
How to mix them How to use colour well
How is white light produced by LEDs?
What are tuneable white LEDs?
How is coloured light produced from LEDs?
Why do LEDs produce more vibrant and saturated colours than conventional lamps?
What does RGB LED mean?
What are the different types of RGB LEDs?
How is Amber produced?
What are AlGaAs, AlInGap and InGaN?
What does correlated colour temperature, CCT, mean?
What defines the colour temperature of a white LED?
What are the standard comparisons used to evaluate the colour quality of light sources?
In what contexts do R-9 values of CRI of LED lamps become important?
What is the SPD of a light source?
What is a MacAdam Ellipse?
What quality process guarantees the consistency of the colour appearance of LEDs?
What other parameters can be used to evaluate the colour quality of light?
Why do some white LEDs start emitting an almost bluish tone over time?
Why has the colour appearance of the LEDs changed after some period of use?
Other
questions
General questions
Industry standards
Dimming with LEDs
LED light fittings
Life and light output
How do LEDs produce light
The environment
Retrofit Lamps
Technical FAQs
Rejected and Misc questions + medical