In this paper has introduced to anti-dazzle past 2 times with optical optical technology, today we went on around the
LED downlight etc to realize the secondary light distribution of lamps and lanterns of main optics lens and light distribution, to continue to explore one: first of all, we from the LED downlight etc. On the lens with the light of lamps and lanterns: there are many kinds of lens, which has been widely applied at present of TIR huygen-fresnel's lens, lens, lens refraction.
To introduce the following short answer respectively.
TIR lens the classic is standard lens cone lens, this lens was largely dependent on all through reflection within the so called lens.
Usually TIR lens is designed to provide a axisymmetric beautiful round spot, can be combined into many stars LED become lens array can also be single star added support for installation and control light.
The advantage of TIR lens is obvious, all income optics light, at the same time, on the surface can make all kinds of processing, such as glass bead, sanding, stripe stretch, soft light, cloth on the surface of fe NieErHua processing, such as accurate light distribution.
But for COB products, lens huge volume, variant - products
Transparent outer cone surface for vacuum coating processing, replace with reflection refraction to reduce product size.
Huygen-fresnel's lens should not be too much, the advantage is thin, generally need to cooperate with reflector to improve photosynthetic efficiency.
Need to pay attention to when using speckle defects caused by dispersion and chip imaging problems.
In a particular type of light with the light refraction lens, the more applications;
Two optical refractor combination ways of complex light distribution, the design requirement is higher.
Take a look at some of the optical light distribution is introduced: mixing cavity with common application is LED spotlights, light will be more than mixed light LED in the optical cavity, the projection and the diffuser, advantage is low consistency of light source, uniform surface soft, the cost of the economy.
It is worth mentioning panel lamp is a kind of special mixed optical cavity light distribution.
Defect is difficult to achieve small Angle light distribution.
Reflector with light reflection method can complete most of distribution of the light, in theory, can even do parallel light distribution, but in actual design, due to the length limit, small Angle limited application, volume of lamps and lanterns is also difficult to control.
At the same time due to a large number of light shot out directly, complex type light is difficult to achieve.
In the era of the LED, its used more with anti-glare, such as black light reflector.
In the era of traditional light source, restricted to high light source cavity temperature (
The HID lamp light source cavity glass surface temperature could be close to 200 degrees c)
Generally USES aluminium plates spinning, material, surface anodized, high-end products for aluminum or silver sputtering process.
Power spinning but low accuracy, high consistency requirements for raw materials,
After spinning stress the springback deformation)
Higher request, the robustness of the design, make the traditional era, the mainstream of 12 degrees, 24 degrees lamp and street lamp products main control in the hands of the international line of famous brand.
As LED intervention, the optical cavity temperature is reduced, combined with high precision injection molding, the characteristics of the production is easy to control, has no technical bottlenecks, in all kinds of
commercial ceiling lamps (
Small Angle lens to set use)
。
LED tube light products, especially the COB light source is widely used in the products, but the application of small Angle. The problems of large flare.
Note: LED downlight cixin using scientific secondary light distribution design, reflective cup through precise optical computing, a uniform light, the halo transition nature without macular light, light efficiency & ge;
85 lm / w。
Above is to realize high quality LED tube light, lamps and lanterns light products one of the main parts of the lens and with some introduction of light!
For your reference!
Note: the pictures in addition to the special instructions, are derived from the network.
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