研究了一种用于塑料光纤阵列等距V形槽散射点加工方法。提出一种重力微压刀刻技术,理论分析了散射点光散射率与提供重力的砝码质量的关系。结果表明:V形槽散射点的光散射率随砝码质量的增大呈3/2幂指数增加。通过建立等距散射点均匀发光模型,理论推导了加工时各散射点所需的砝码质量计算公式。实验验证了V形槽散射点的光散射率与砝码质量的关系并得到了它们的关系曲线。采用通过砝码质量计算公式得到的参数,制作了亮度均匀度高于85%的单根等距散射点侧面发光塑料光纤,以及尺寸为180 mm×101 mm的等距散射点塑料光纤阵列背光板,亮度均匀度为90.9%。实验结果证明了重力微压刀刻技术制备塑料光纤阵列等距V形槽散射点的可行性。

A processing method of scattering points with the equidistant V-shaped grooves is studied, which is used for the plastic fiber array. A blade carving technique is presented using gravity micro-pressure. The relationship between the light scattering rate of the scattering point and the weight mass providing gravity is analyzed theoretically. The results show that the light scattering rate of V-groove scattering points increases with the increase of the weight mass, in the form of 3/2 power exponent. The uniform luminescence model with isometric scattering points is established. According to the condition of each scattering point in machining, the formula of weight mass for machining is deduced theoretically. Experiments verify the relationship between the light scattering rate of V-groove scattering points and weight quality, and the relation curve between them is obtained. Using the parameters obtained from the formula of weight mass, a single side luminescent plastic fiber with equidistant scattering points is fabricated, and its luminance uniformity is higher than 85%. The 180 mm×101 mm backlight plate of plastic fiber array with isometric scattering points is fabricated, and its brightness uniformity is 90.9%. The experimental results show the feasibility of preparing the V-groove scattering points for plastic fiber array by gravity micro-pressure blade carving.