"0

　　Regarding LED lighting, how much do you know about these light distribution characteristics and methods?

　　At the beginning, let’s review the 8 light types for everyone:

　　▲Overview of light shapes

　　The above 1-8 are summarized light shapes. Structurally speaking, they are based on shape geometry and gradual change, but the visual geometry facrs need  be put aside. The default condition is the light and dark distribution map formed by the lamp vertically downwards on the horizontal plane.

　　The actual light shape is ever-changing, what is the significance of the basic light shape classification?

　　Light shape generation

　　The light distribution type is the core facr that determines the light shape. In the usual sense, it refers  the light distribution of the lamp. What everyone is familiar with is the light distribution curve of the lamp. The curve is a flat concept, and the shape is a three-dimensional concept. Can a flat concept be transformed in a three-dimensional one? What about the concept?

　　▲ Schematic diagram of combined light distribution results

　　▲Schematic diagram of overall effect

　　Light distribution level

　　What we usually call light distribution refers  the level of luminaires. In fact, with the development of LED lighting technology, the definition of luminaires has become more and more complicated, and the light distribution has become more and more complicated. At present, we can divide the light distribution in four levels: unit level, module level, lamp level and system level.

　　The lamp-level light distribution combination is called composite light distribution, and the system-level light distribution combination is called combined light distribution. Composite light distribution belongs  the characteristics of lamps and requires light type analysis and naming, while combined light distribution is a system application, and light type analysis and naming are not required.

　　Features of LED light distribution

　　LED is not the general trend, but is already the mainstream. Most LEDs use transmission light distribution instead of reflection light distribution, so what is the difference between it and traditional light source light distribution?

　　▲The hemispherical surface emits light, if the light is reflected and distributed, the control ability is low

　　△Back reflection, there may be dark areas or bulky

　　The substrate, electrical components and heat sink will affect the optical path, resulting in a complex structure of the light control device.

　　Regarding the integrated packaged LED, considering its non-point light source, whether it is reflected or transmitted, the volume may be o large  be practical.

　　In the LED era, more use of transmission light distribution.

　　Seeing this, do you know what kind of light distribution it looks like? What are the types of light distribution?

　　Distributed light distribution 01

　　A single lens or reflecr cannot complete the light distribution of the entire lamp. Light distribution in the lens is currently the most commonly used method. In fact, there are four different levels  understand. From the application point of view, the realization of light distribution at the package level will be a great boon for our entire lighting industry.

　　Light distribution multilayer 02

　　① Package-level light distribution

　　② Module-level light distribution

　　③ Luminaire-level light distribution

　　④ System-level light distribution

　　The near and far of light distribution 03

　　① The light distribution of the whole LED light is not equal  the light distribution of the LED module, and vice versa

　　② Distance may change the light distribution of the whole lamp

　　The small and big of light distribution 04

　　① The LED monomer is small, but the parts  achieve precise light distribution may be large

　　② The area of ??the whole lamp may be very large

　　③ Area is often important in indoor lighting

　　Light distribution means

　　Light distribution lens 01

　　The research foundation of non-imaging optics is relatively weak. The curved surface design of the aspheric lens itself is not o difficult, but it is still difficult  control the light energy distribution on the solid angle at the same time. Some types of light distribution are not ideal, materials are limited, and a lot of The PC, PMMA used is anti-aging, anti-ultraviolet or weak point. The volume of the lens affects the LED array, and the lens can complete most common types of light distribution.

　　▲Type I light distribution-short and medium

　　▲Type II light distribution-medium length

　　▲Class III light distribution-medium length

　　▲Type IV light distribution

　　▲ Type V light distribution

　　▲Class VII light distribution

　　Reflective light distribution 02

　　Reflection can complete most of the light distribution, and theoretically even parallel light distribution can be achieved, but in a practical sense, the VII, narrow-angle, V, and VI types are still difficult.

　　Panel control light 03

　　The panel light control is mostly limited  a wider light distribution, sometimes even for the purpose of similar diffused light.

　　The purpose of the prism panel  increase the viewing angle.

　　The light guide plate converts linear light in surface light.

　　The diffuser converts the dot matrix in a very wide V-type surface light  eliminate ghost images.

　　The point light is diffused  achieve the purpose of reducing the brightness of the surface of the lamp and reducing the glare.

　　Combination light distribution 04

　　Combined light distribution, also called structural light distribution, can be called tertiary light distribution, but it is still the basic light distribution method for the entire lamp.

　　Combination of light distribution can achieve basic light distribution, and can also achieve personalized special light distribution. The combined light distribution can even be carried out at the entire lamp level.

　　The single-module type I symmetric light distribution can be combined  achieve asymmetric type II and type III light distribution.

　　The single-module type V symmetrical light distribution can be combined  achieve a symmetrical type I light distribution.

　　The class I, class II, class III, and class IV light distribution of a single lamp achieves extremely wide class V and class VI light distribution through the combination of the entire lamp level.

　　Previous page

　　Previous post: What kind of industrial lighting fixtures are suitable for aumobile facries?

　　Next: Lighting requirements for pharmaceutical clean rooms/purification workshops"