LENS ARRAY AND LIQUID CRYSTAL DISPLAY ELEMENT FORMED BY USING LENS ARRAY

摘要

PURPOSE:To freely adjust the focal length of the lens array by flattening the surface of the lens array with a material having a specific refractive index. CONSTITUTION:A circular cylinder of resist is produced by using the technique of photolithography and heat is applied thereto to induce flow in the resist. The resist is cooled to solidify at the point of the time when a lens shape is made by the surface tension of the resist to obtain microlenses 102. The rugged parts of the lens array 101 produced in such a manner are flattened with the material 103 having the refractive index larger than 1 and smaller than the refractive index of the material of the lens array 101. The power of each piece of the microlenses 102 is lowered in this way and the free control of the focal length or the free setting of the radii of curvature of the individual lenses is possible.