What is the return light LED? What does it do and its evolution

The return light is divided into mid-range and short-range. There is no lens in the front of the return light, and the light is completely emitted from the larger reflector at the back. The traditional light source uses a quartz tungsten halogen bulb and a combined metal reflector. It has a long range, high illuminance, The characteristic of hard light quality is one of the non-transparent series commonly used in stage, TV, and movie lighting fixtures. Back light LED is the back light of LED light source. How did it evolve?

The function of the return light is generally used for the stage surface light, backlight and side light, which makes the contour effect of people and scenery stand out. The light is completely emitted from the larger reflector behind, and its brightness is brighter than that of the condensed light. It should be expressed on the stage. Use when there is a strong light source and brightness. Because of its large heat generation; high power consumption and high energy consumption; inconvenient use; and high safety hazards, the return light of traditional light sources can be said to be basically eliminated. The return light LED adopts LED cold light source, no heat, low power and high luminous efficiency; the size and distance of the irradiated beam are controlled by the signal; the life span is more than 50000h; from no lens to the use of thin thickness, light weight, good light transmission, and easy The processed threaded lens, on the one hand, condenses light, and on the other hand, it can evenly illuminate the light. The representative lamps are LED film spotlights.

Back light LED (LED film spotlight)

LED film and television spotlights can be said to be a perfect upgrade of traditional back light. High color rendering index LEDs are used as light-emitting elements, high-power-density LED modules and high-efficiency aspheric threaded lens condenser lenses. The lamps have high luminous efficiency and large beam angles. Uniform light spot, no flicker, energy saving and environmental protection, high luminous efficiency and low heat energy. It is widely used in various studios, conference rooms, multi-function halls, theaters and auditoriums.