| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a microlens array with excellent lens efficiency capable of improving the projection transmissivity in the case of being combined with an electro-optical device such as a liquid crystal device and used, and a microlens substrate. <P>SOLUTION: The microlens array is provided with a transparent substrate for which the lens surfaces of a plurality of the microlenses are formed on one surface. When defining a prescribed pixel pitch as x[μm], the height of the microlens as y[μm] and an approximate curvature radius at the vertex of the microlens as Rt[μm], the lens surface is formed into an aspherical surface so as to satisfy the following expressions (1); (0.1914x+4.2024)-1.5<y<(0.1914x+4.2024)+1.5 and the following expression (2); (0.8428x-6.1276)-2<Rt<(0.8428x-6.1276)+2. <P>COPYRIGHT: (C)2004,JPO |
