1. Lamp holder classification: E10, E12, E14, E26, E27, etc. The beginning of E is usually: screw lamp holder GU10 and other GU beginnings refer to our daily bayonet type, GU: G means that the lamp holder type is plug-in type , U means that the lamp head part is U-shaped, and the number behind means the center distance of the lamp pin hole (unit is millimeter "MM").
2. MR16 and MR11 start with MR are in-line local lighting small spotlights commonly used in this lamp holder, usually small spotlights have two pins for easy installation. MR16, GU10 are different lamp sockets for everyone, PAR30, 38 are different diameters, they are the standard and name of the world, they are all called lamp cups and spotlights, and each is suitable for different ceiling lamp sockets. In the lighting industry, MR16 refers to a lamp with a multi-faceted reflector with a maximum outer diameter of 2 inches. MP11 is a lamp that is a little smaller than MR16.
3.MR: Multiface Reflect, multi-face reflection (lamp cup), the number behind indicates the diameter of the lamp cup (unit is 1/8 inch), the diameter of MR16=16×1/8=2 inches ≈ 50mm PAR lamps generally have PAR30 PAR36 PAR46 PAR56, which has a long or short size, is also called a downlight. It irradiates the light beam and is used to illuminate the stage, dynamic color change, etc. It is a common lamp on the stage. Because of its relatively large power consumption and the feeling of baking, it is gradually being used by LED PAR. The lamp that replaces AR111/AR70 is aluminum cold reflective halogen spotlight. E27 and E14 refer to the size of the ordinary screw cap. E27 is the cap of the incandescent lamp we usually use. E14 is one size smaller than it and larger than E27. and the E40. The G12 is a single ended tubular metal halide bulb.