The design of product structure often encounters the problem of key light guide design, and the selection of light guide material is also a major difficulty, which affects the uniformity and brightness of key light guide.
Next, let's discuss the choice of light guide material separately.
First, the composition of the material.
Generally, PC and PMMA are the main ones, and PS and translucent ABS are supplemented, and the transparent light guide effect is best PMMA and PC, and the light transmittance can reach more than 92 effect.
Second, the way of diffusion powder of light guide material.
If the LED light is designed to shine directly and only to transmit light evenly, it can be used directlyTranslucent materials are made with diffuser powder, or diffusers are attached to the bottom of the translucent partsto spread the light source and make the light transmission uniform. 3. Surface treatment of light guide materials.
Do it on the back of the light guide pillarBite flowers, matte or matte finishes, or textured concave and convex structures
For example, the common aperture effect, do a bite or frosted effect on the back, and the surface can also be 03*0.3. The sawtooth surface prevents light transmission, or the electric spark specification uses a coarse electric spark pattern (VDI27 can be used), and then pay attention to the distance between the light guide column and the LED, not too close, otherwise the astigmatism effect is not good, and the LED light should be selected with a large scattering angle.