Detection Method Of Diffusion Plate

  Detection method diffusion plate Hello everyone, today I want to talk to you about the method to detect the diffusion plate and follow up the future understanding. Non-standard round light guide plate photolithography is a flat silicon wafer coated with a layer of corrosion-resistant photoresist, and then let the strong light through the photolithography plate, in the photolithography plate according to the production of a specific layer of graphic information for selective exposure; then the photoresist will be developed after taking off, the silicon wafer will be left on the surface with a micro-graphic structure of the film. The surface roughness of the lithography produced by lithography is not good, and the loss of light energy is relatively large.LED lithography is a molten forming material filled with high pressure into a closed mold, which requires that the lithography and microstructure in the injection molding is completed simultaneously, and the mold must be made quite strong, so the mold price is also quite expensive, so it must be produced in large quantities to offset the high cost of the mold. The cost of the molds must be offset by the high cost of the molds. Single-sided microstructure arrays of light guides are generally produced by injection molding process, and its bottom texture structure can be in the shape of tiny lenses, micro spheres or tetrahedral angular cone prisms, etc. The nano light guide is injected directly into a transparent particle material with scattering function inside the light guide during injection molding, and the concentration of the transparent particles is adjusted reasonably to achieve effective control of the light output and finally achieve high uniformity of the light output. Because the doping process is not easy to precisely control, so the injection method is suitable for the production of small and medium-sized light guide plate, for the large size of the light guide plate will have the problem of uneven light output.

1. illuminance meter, the instrument is cheap and easy to carry, but due to the external interference of natural light, the general test out value will generally be very high. For reference only, such a device, when applied instead, cannot be imposed as an accurate instrument.

 2, light transmission haze tester: The instrument is tested outside of the time of the impact is small, so the results of the test out instrument is low contrast and more accurate. Generally do diffusion board manufacturers use this instrument to test the haze of their products light transmission. 

3, integrating sphere: integrating sphere light transmittance diffusion plate test is very accurate, almost no interference from the external environment, so the use of the same plate test data is lower than the above two, because the equipment is more expensive, therefore, only large lighting companies use such equipment only to test the light transmittance. (Note: The size of the integrating sphere, the placement position, the distance from the probe, the angle of the probe and the light source and other factors can affect the test results).

   The light intensity distribution [1]: The light intensity distribution is the tool whether the lamp indicator has commercial value, because he is the only one dimensional light of the lamp for all the complete tests, several other tools mentioned above, some only measure light or a material limited to the determination of molecules, when combined with luminescence of this material, is in compliance with the regulations of the International Association of Illumination and can only use it to measure. Therefore, taking into account that the testing instruments used are different, the measured light transmission is not the same, the choice of light transmission of diffusion panels, be sure to ask in what instrument testing, which will not make a big difference to their products.