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        • Name: KETELONG® PC Microstructured Diffuser Sheet

        KETELONG® PC microstructured diffuser sheet is a novel sheet of light diffusion that is made from polycarbonate (PC) that is the most commonly-used engineering plastics in the world and spherical diffusant by extrusion process in 10000 level clean room, one side is matte in lattice microstructure, and the other side is frosted. These special structures enable ray of light penetrating the sheet to have sufficient diffuse reflection, becoming brighter and softer. In light of different requirements of panel lamps with point light source (bottom lighting) or surface light source (lateral lighting) in diffusivity and transmittance of the diffuser sheet, we provide KETELONG® PC high diffusion type microstructured diffuser sheet  (MHD25 series for short) and KETELONG® PC high transmittance type microstructured diffuser sheet (MHT35 series for short) for users to select, whereas MHD25 series is more suitable for point light source (bottom lighting) panel lamp and blistering lampshade, and MHT35 series is suitable for surface light source (lateral lighting) panel lamp.




        Excellent Optical Property


        KETELONG® MHD25 series, with haze over 91% and relative transmittance larger than 75% (measured by integrating spheres), is very suitable for bottom lighting type panel lamp, and will get better light diffusion effect when the thickness of light is 0。75-1 time of distance between lamp beads, however other traditional diffuser sheets will get it to 1。35 times, so the MHD diffuser type enables the panel lamp to be thinner and save more cost。


        KETELONG® MHT35 series, haze over 90% and relative transmittance larger than 80% (measured by integrating spheres), is very suitable for lateral lighting type panel lamp. Its high transmittance will increase the luminous flux greatly to enhance brightness, that is, it can obtain the same luminous effect by reducing the number of light beads or selecting beads with lower power, and save energy.


        Uniform Light Emitting


        No matter point light source or surface light source, KETELONG® PC microstructured diffuser sheet will show great diffusion effect, the brightness of the luminous surface will reach 98% or more。


        Stable Color Temperature


        Panel lamps furnished with KETELONG® PC microstructured diffuser sheet hardly have drifting color temperature and declined color rendering index, and totally keep the color temperature of LED beads。




        It is tested to be qualified in environmental protection by ROHS tests.


        Impact Resistance


        KETELONG®  PC Microstructured Diffuser Sheet has impact strength over 250-300 times better than that of common glass, and about 30 times than acrylic sheet of the same thickness. In the simulated hail impact test through a simulated hail impact test machine that nylon balls with diameter of 20mm (weighing 4.8g) are shot on the samples at a speed of 21m/s, both glass and acrylic are fractured or broken by observing the damages of sample, but KETELONG® PC checkered sheet does not. In actual practice, the final velocity of hail with diameter of 20mm can reach 21m/s.


        Scratch Resistance


        In view of unique surface structure of KETELONG® PC microstructured diffuser sheet, it has more excellent scratch resistance than a glazed diffuser sheet, so the possibilities of product loss caused by man-made or mechanical scratches during production are greatly reduced.


        Aging Resistance


        KETELONG® PC microstructured diffuser sheet is a kind of weatherproof material that can be used for a long time in a range from -40°C to 120°C. Even used for ten years, it still has high light transmittance and low yellowing, this is unattainable in PMMA sheet, PS sheet or MS sheet.


        Light Weight


        KETELONG®PC microstructured diffuser sheet is only half weight of glass, which is conducive to reduced cost for transportation, loading and unloading, installation and support framework.


        Fire Retardance


        KETELONG®PC microstructured diffuser sheet has fire point of 580°C and is self-extinguishing after the fire is away. It cannot have toxic gases and boost fire spread during combustion, complies with UL94 V2 standard. Furthermore, sheets live up to UL94 V0 standard are available.


        Thermal Formability


        KETELONG® PC microstructured diffuser sheet is very easy to form, so it is possible to meet your forming requirements according to different designs, and show excellent property。



        Product Specifications

        Standard thickness: 3。0mm, 3。5mm

        Standard Specification: 1,200*1,200mm 



        Down lamp, panel lamp, LED line lamp, wall washer lamp, professional film viewing illuminator, advertising lamp, grille lamp, high-end aluminum lamp, advertising lamp box, etc。

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