How many classifications about beam angle do you know

How many classifications about beam angle do you know?

The Beam Angle is the angle between the two directions opposed to each other over the beam axis for which the luminous intensity is half that of the maximum luminous intensity.

LEDs are directional by nature, casting a cone of light from the luminaire (typically installed along the ceiling) that culminates in a circle of light on the target area (typically the floor). The angle of the beam dictates the size of the area to be covered in light.

The ideal beam angle of your LED bulb or luminaire is determined by the distance between the light source and the target area for illumination. Generally speaking, the farther the light source is from the target area, the smaller the beam angle required to effectively illuminate the space.

Do you know how many classifications about beam angle?
Two cases in point are the PAR and the MR16.

Very Narrow Spot (VNSP)
At 7 degrees or less for an MR16 or 15 degrees or less for a PAR lamp, this reflector casts an intense, focused beam without a square inch of wasted light.

Narrow Spot (NSP)
At 8 to 15 degrees for an MR16 or 16 to 30 degrees for a PAR lamp, the reflector casts a beam slightly less focused than a VNSP.

Spot (SP)
At 16 to 22 degrees for an MR16 or 31 to 60 degrees for a PAR lamp, the reflector casts a medium-sized beam.

Narrow Flood (NFL)
At 23 to 32 degrees for an MR16 or 61 to 90 degrees for a PAR lamp, this reflector casts a medium-wide beam.

Flood (FL)
At 36 to 45 degrees for an MR16 or 91 to 120 degrees for a PAR lamp, the reflector casts a wide beam.

Wide Flood (WFL)
At 46 to 59 degrees for an MR16 or 121 to 160 degrees for a PAR lamp, the wide flood has a dispersed beam to cover a large area.

Very Wide Flood (VWFL)
At over 60 degrees for an MR16 or over 160 degrees for a PAR lamp, this reflector casts an extremely wide beam.