When ships sail at night or work at night, they also need some long-distance lighting and strong light.Searchlights can be used for long-distance lighting, relying on optical devices such as lenses or mirrors to concentrate the luminous flux in a very small body angle.

Searchlights are used to illuminate both sides of the strait when passing through narrow waterways, inland rivers and canals, etc., and at the same time can be used for long-distance light signal communication. This kind of searchlight is called a signal searchlight.

Flood lights can be used for strong light lighting, which can distribute the luminous flux in a relatively large body angle, and the light intensity is very large.

The searchlights and flood lights installed outdoors are powered by the main distribution board and controlled by the cab.

Marine searchlight

Marine searchlights are lamps that use mirrors or lenses to concentrate the emitted beam of light in a small three-dimensional angle (generally less than 2 degrees) to obtain a larger light intensity.Around 1870, searchlights with carbon arc light as the light source first appeared in the world.

Marine searchlights are generally dominated by mercury-xenon light sources, but the specific volume of the lamps is large and bulky, making it difficult to install and operate.In recent years, security searchlights with metal halide light sources have appeared on the market. Due to their small size, light weight and high luminous efficiency, (575-watt metal halide bulbs have a luminous flux of up to 49,000LM,) they have a long range and have been more and more widely used in navigation, ships, yachts and other places. More and more widely used.