Beam Angle: The angular dimension of the cone of light from reflectorized lamps encompassing the central part of the beam out to the angle where intensity is 50% of maximum. Categories from narrow angle to wider angle are Spot, Flood, Narrow Flood, and Wide Flood.
Color Rendering Index (CRI): A measure of the correspondence between the color of an object and its appearance under a light source. CRI>60 or >70 = not good, CRI >80 = very good, CRI >90 = excellent. CRI=100 is equivalent to natural sunlight!
Correlated Color Temperature (CCT): A specification of the color appearance of a lamp, measured in degrees Kelvin (K). For example:
Dimming: The ability of a lamp to dim from 100% to 10% brightness by some electronic control. Many LED bulbs are not compatible with existing dimmer switches, or do not dim within the full range. Please check with your local Majestic Mirror & Frame representative for more information about compatibility.
Efficacy (Efficiency): The lamp’s ability to convert electrical power to light output. Simply put, lumens/watts.
LED: A Light Emitting Diode (LED) is a semiconductor device that converts electricity into light. Most white light LEDs are coated with phosphors to change the color characteristics of the emitted light.
Lumens (luminous flux): The measure of the perceived power of light, measured in lumens. Simply put, brightness!
Watts: A unit of electrical power. Lamps are rated in watts to indicate the rate at which they consume electricity.