Classification of light source fiber in optical fiber lighting system jun suhui Beijing institute of electric light source optical fiber lighting was originally conceived by William.
In patent 9, filed by wheeler in 1998, it was called a pipe-lighting device, in which a tube coated with an inner reflector directs light from a central source to a number of locations where lighting is needed.
It wasn't until the invention of low-loss glass fiber optics in 2000 that fiber optic lighting really took off.
Due to the rapid development of communications, the development of high quality and cheap glass optical fiber, and then introduced optical fiber lighting.
Fiber optic lighting system has the characteristics of full visible light radiation, light decay, not easy to damage, long life, high energy efficiency, low maintenance cost and so on, so it has a broad application prospect.
Composition and principle of fiber optic lighting system fiber optic lighting system is a lighting system composed of light source fiber and light output element. Its basic feature is that the light source can be placed in other places far away from the illuminated area. Therefore, the heat generated by the light source and the whole power supply system are separated from the illuminated object.
Since the distance of light through the fiber is generally long, the light output by the fiber has no thermal radiation.
There are basically two types of fiber-optic lighting systems: those that glow at the end and those that glow at the side.
The end-face luminescence system transfers the light emitted by the luminator from the end face of the fiber beam to the end face through complete internal reflection. The end face of the fiber beam is usually equipped with appropriate optical output device to give the desired form of light distribution.
The side luminescence system transmits the light emitted by the luminator from the side of the fiber beam, and the brightness of the whole fiber is very uniform, similar to the effect of a neon light.
The principle of the two luminescent systems is shown in the figure.
The efficiency of the optical fiber lighting system is the photoelectric conversion efficiency, which depends on the misalignment efficiency of the first end of the optical fiber and the transmittance in the transmission process.
The light when the light incident at right Angle to the fiber bundle end face, light totally internal reflection occurs, the light loss minimum as shown in figure more than when the incident Angle of light, refraction to escape from the fiber optic fiber wall as shown in figure for ordinary optical fiber material, incident Angle should not exceed 30 largest jiang yao figure fiber light-emitting principle diagram surface luminescence system luminous body side emitting light system.
Side glow fiber bundles.
Optical output device.
In order to improve the efficiency of the system, it is necessary to solve the problem of uniformity of the light spot on the end face of the fiber bundle.
Production 11, ding optical fiber bundle connection end a gas seven carrol reflector luminescent figure ellipsoid reflection system.
It is difficult to locate the luminescent body accurately.
Speckle uniformity is poor there are black speckle reflector diagram optical component optical component system.
Easy to replace light source.
Spot uniformity is good in addition, there is a new focusing optical coupling system, it will be used with a special light bulb and a special optical interface, so that the spot uniformity greatly improved, system efficiency reached the maximum, as shown in the figure.
Figure focus type optical convergence system accurate integral type reflector tiny bulb light focusing lens of the optical lens denotation of fiber bundle fiber optic lighting system using light source, fiber optic lighting system in the luminous body, generally by a light bulb, drive the electronic trigger device and control bulb and direct light onto the fiber bundle of high precision optical interface device.
According to requirements of different lighting places, light source usually can choose tungsten halogen lamp, quartz metal halide lamp, ceramic metal halide lamp and new type focusing the light bulb, the new focus type light bulb is a kind of high pressure micro discharge, effective luminous body size is not accurate positioning in the focus of the reflector, the working condition is very stable, and the lamp supporting the use of optical interface device is a precision of lens system, part of it in the light, the other part on the optical fiber link end, together, for maximum light light path see chart shows the efficiency of FGC system using different lighting effect of light source of fiber optic lighting system.
Table using the different light source of fiber optic lighting system of illumination light source power show temperature every life shine in the length of optical fiber diameter length applicable class index is not the biggest photometric flux long degree of halogen tungsten lamp quartz metal halide lamp, ceramic gold a new genus halide lamp together a focal type fiber optic light source the light bulb will focus on the fiber bundle on the input end of a new generation of optical fiber bundle in the end is equipped with a built-in optical system, deserve to go up again the new bulbs, make the luminous flux increased significantly on the exposure to the fiber bundle, so as to improve the efficiency of light FGC, at the same time can also play a role of optical fiber insulation protection.
The optical fiber bundle's input end face is polished and pressed into a bundle without binder, which will further improve the efficiency of optical fiber bundle.
The optical fiber bundle is divided into the end glow and the side glow.
The optical fiber bundle with luminous end is composed of several optical guide fibers with diameters ranging from tens of microns to a few millimeters.
Usually, a light source can be supplied to a fiber bundle consisting of optical guides with root diameters, as shown in the figure.
The structure of the fiber is shown in the figure.
The side-glowing fiber bundle is shown here, made of pure, unadulterated acrylic acid, and the diameter of the fiber is generally schematic.
The side glowing optical fiber system is given a figure of planar junction geometry figure face glowing fiber bundle link end face glowing optical fiber bundle figure at the end of the end face glowing protection to the structure of the fiber optical fiber core body cladding fiber end a Mao Jiao bun. Book LanLi dish a picture link end side glowing optical fiber the stability of the transparent cover side glowing optical fiber bundle fiber end cap P fox from fiber bundle yue hydrogen wei Shanghai jue kagyu figure several side glowing optical fiber system structure diagram of a luminous body fiber length of graph system or artful system a luminary ring optical fiber length up to 3 M (system) or figure system two light fiber length of graph system or system a few light optical fiber of maximizing the total length of each section of the length of the fiber can reach 30 light output graph system or system component in fiber optic lighting system light output element's role is to control and guide the light, make the light to be according to the content, instead of the traditional lighting light bulbs.
Depending on the purpose of the optical fiber lighting system, the optical fiber terminal can be equipped with many different optical output years, such as reflector lens filter or scatterer, etc., through these components combined into different directional lighting or projection lighting device to obtain different lighting effects.
Application of optical fiber lighting system optical fiber lighting is a new type of lighting system, widely used in commercial display advertising signs, traffic signals, entertainment places, architectural decoration lighting.
Because the light in fiber optic lighting has no heat infrared ray and most of the ultraviolet ray is filtered out, it is especially suitable for the lighting of art works and cultural relics such as museums, art galleries and so on.
The light source and power supply in the optical fiber lighting system are far away from the lighting area, especially suitable for the lighting in the humid environment, underwater and flammable and explosive dangerous situations.
In addition, when used in decorative lighting, a color turntable filter or elements such as an aperture and a shutter between the light source and the light output element can create a special lighting effect of a variety of colors.