Navigation mark light A type of traffic light that is installed on certain navigation aids to ensure that the ship is safely navigating at night. It emits the specified light color and flash frequency at night to achieve the specified illumination angle and visibility distance. There are four types of beacon lights: fixed beacons, light buoys, light boats and lighthouses. Fixed beacons, light buoys and light boats are beacons for navigation and warnings. The lighthouse sends an identifiable signal at night on the sea for the ship to determine the location and provide a hazard warning to the ship.
LED navigation light is a new type of navigation light that has been widely promoted in recent years and is receiving more and more attention from the maritime sector. It is important to choose and use LED navigation lights properly. In addition to the application of LED light sources for planar applications to guide lamps, bridges and slewing lamps, more LED beacons are used in circumferential applications. At present, the definition of LED navigation light parameters by the navigation manufacturers of the world still uses the two indicators of light intensity and vertical divergence angle of the exit surface.
When used as a light source, LED monolithic devices usually have a certain angle of view, that is, to ensure the light intensity within a predetermined viewing angle range, and the intensity outside the viewing angle is greatly attenuated, and the light intensity/angle of view characteristic curve indicates that the LED single body The device is a directional light source, rather than an omnidirectional point source in a 4-dimensional angular space. A ring-shaped beacon light made with an LED device has a lens different from that of a conventional point source lens.
For LED ring beacons, LEDs are a special source of light. The LED monolithic device itself has a small optical lens. The lens collects a point source on a semiconductor wafer into a beam of a solid angle and outputs a nominal intensity within a nominal solid angle. For example, an LED device with a 30° solid angle, that is, a nominal light intensity is output at a solid angle of 30°, and when it exceeds 30°, the light intensity is attenuated relatively quickly. The LED ring-direction beacon light is to evenly arrange the LED devices with a certain angle of view on the circumference of a certain diameter. If we circle the circumference of the LED device, the LED ring is specially designed for the direction of the beacon light. A Fresnel lens is a special lens that uses the circumference of the illumination as the focal point of the lens; the focal length of the distance between the circumference of the illumination and the surface of the lens. Comparing the LED ring-direction beacon light with the conventional single-cone Fennel lens beacon lamp, the difference is that the lens focus of the former is at the center of the lens, and the latter is on the circumference of the illumination.
1. LED navigation light has a good level of light distribution. The level light distribution index is generally expressed by the water quasi-light distribution characteristic curve. It can visually see its peak-to-valley value on multiple concentric circles and can pass the coordinates. Precise positioning to determine the percentage of peak-to-valley. In general, the closer the peak to the valley, the better the leveling performance. The beacon light with excellent leveling characteristics has a peak-to-valley value of 10% or less.
2, LED beacon lights can use advanced drive circuit
Modern LED beacon lights must have high conversion efficiency drive circuit (generally using switching power supply), high-precision flash cycle with software; self-test circuit and intelligent control circuit with standard computer port, which can be conveniently Access to various types of telemetry remote control systems or AIS systems.
3. LED beacon light has high light/electric conversion efficiency LED beacon light. Under the same power and same divergence angle, the higher the light intensity value, the higher the light/electric conversion efficiency, and the more power is saved during use. There are many ways to improve the efficiency of optical/electrical conversion, but mainly to design reasonable control and power drive circuits.
4, LED navigation lights have a good overall protection performance LED navigation lights because the mechanical components of the traditional bubble changer are eliminated, can be made into a water-tight structure. When the whole watertight structure is adopted, even if the entire navigation light is immersed in water, in addition to normal operation, remote monitoring can be realized by a non-contact method.
LED beacon lights can also be widely used in coastal and inland navigation aids, and can also be used as high-altitude obstacle lights and oil-plated explosion-proof lamps. (small soup)
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Product parameters
Description: Smart RGBW Bed lamp
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