The defects of insufficient light guiding rate of domestic light guide plates are caused by the following few technical treatments. (1) Both sides of the light guide plate are smooth, so the intensity of the light transmitted from the front and back sides is as large, so the theoretical value of the total amount of light impinging on the sign is only half of the incident light, and with the distance from the light source As the distance increases, the brightness gradually decreases; (2) the position of the ejector rod is provided at the entrance of the light, so that the surface of the entrance port is rough, and the light is diffusely reflected, and finally the total amount of incident light entering the light guide plate is greatly reduced; 3) The reflection surface of the arc-shaped transmission light without frosting, the light reflection and refraction phenomenon occurs many times, and the light loss into the light guide plate is greatly increased; (4) the mold parting surface is large, and Placed at the front end of the incident light, this is like a curtain wall for the incident light entering the light guide. (5) It is inconsistent with the transmission direction of the optical cable. Therefore, its total light guiding performance is far lower than that of imported similar parts, which makes the instrument appear bright and dark when lighting, or it can not increase the brightness after the lighting bulb power is increased. Through the comparative analysis of the process of the above two typical light guide plate parts, the following points should be noted for the technical design of such parts: (1) Pay attention to the position of the gate and the position of the light entrance port when opening the mold, so that the material flows. The direction of the formed fiber is consistent with the direction of transmission of the cable; (2) pay attention to reduce the number of times of light reflection as much as possible, and adopt a 45° reflection surface at the right angle. For the circular arc, the two sides should be sanded; (3) the mold parting surface The design is based on the principle of not affecting the light transmission; (4) in order to reduce the amount of light escape, the back of the light guide plate should be frosted to form a diffuse reflection to ensure the light is soft. The traditional instrument illumination method is the side leakage illumination, because of its congenital deficiency, When the through-lighting method was introduced, it was quickly eliminated. However, in the transmissive lighting mode, due to insufficient understanding of the improvement of the optical path design and structural components, only attention has been paid to the design work of increasing the light guide plate, and the light is not only transmitted through the back of the nameplate but also from the side of the nameplate. The gap leaks in, forming an opaque glare effect, which seriously affects the softness of the instrument through the illumination itself. Man'S Short,Swim Shorts,Men Swimming Pants,Quick Dry Swimming Shorts shaoxing junjia textile co.,ltd , https://www.junswim.com