Mingtai shadowless lamp is a type of lighting device that can produce uniform illumination without casting shadows. It is often used in surgical operations or signal transmission. There are different types of shadowless lamps, such as reflection-typed, projection-typed, lens-typed, etc. They differ in the way they use reflectors, lenses, or other optical elements to distribute the light from the light source to the target plane. Some common light sources for shadowless lamps are light-emitting diodes (LEDs), halogen bulbs, or metallic glass.