Lamp holder knowledge
In the lighting industry, MR16 refers to a lamp with a multi-faceted reflector with a maximum outer diameter of 2 inches. MR11 is a lamp smaller than MR16. PAR lights generally include PAR30, PAR36, PAR46, and PAR56. They are also called downlights. They are used to illuminate the stage and change colors. They are commonly used on the stage because they consume a lot of electricity and are baked. It feels that it is gradually being replaced by LED PAR lights AR111/AR70 are aluminum cold reflective halogen spotlights E27. E14 refers 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 E40 is bigger than E27. G12 is a single-ended tubular metal halide bulb There are more fluorescent lamps with PL plug-in lamp holders GU: G indicates that the lamp holder type is plug-in, U indicates that the lamp holder part is U-shaped, and the number behind indicates the center distance of the lamp pin hole (unit is millimeter "MM").
There are three commonly used lamp sockets, namely E27, MR16, and GU10. MR16, E27, GU10 refer to different lamp holder specifications, they are called spotlights or lamp cups. E27 refers to the screw lamp cap with the thread diameter of 27mm, and E14 is the screw lamp cap with the thread diameter of 14mm. There are E40 and so on. The caliber of MR16=16×1/8=2inch≈50mm. In terms of appearance, the MR series has fine pins, and the MR16 is a low-voltage lamp. GU: G indicates that the lamp holder type is plug-in, U indicates that the lamp holder part is U-shaped, and the number behind indicates the center distance of the lamp pin hole (unit is millimeter "mm"). GU10 is two round pins, and GU10 is a high-voltage lamp.
"T" represents the diameter of the tube. Each "T" is 1/8 inch. One inch is equal to 25.4 millimeters. Then the diameter of the T5 tube is 16mm. The remaining numbers correspond to the following:
T12 diameter 38.1 mm
T10 diameter 31.8 mm
T8 diameter 25.4 mm
T5 diameter 16 mm
T4 diameter 12.7 mm
T3.5 diameter 11.1 mm
T2 diameter 6.4 mm
What are the characteristics of the PAR light source? What is the difference between PAR38 and PAR20?
The diameter of PAR38 is 38/8″, which is about 120mm;
The diameter of PAR20 is 20/8″, which is about 64mm; In fact, the bulbs are called PARxx, Rxx, MRxx, etc. are all xx/8″ in diameter;