| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a microlens substrate having a suitable visual field angle distribution, a substrate having recessed sections for microlenses which is suitable for manufacturing a microlens substrate, a manufacturing method of the substrate having recessed sections for microlenses and a transmissive type screen and a rear type projector having the microlens substrate. <P>SOLUTION: A plurality of microlenses is formed along the surface direction of the microlens substrate and the microlenses form an elliptical shape when they are flatly observed. The length of the short axis of the microlens is 10 to 500μm and the length of the long axis is 10 to 1500μm. Let La[μm] be the length of the short axis direction of the microlens and Lb[μm] be the length of the long axis direction of the microlens. Then, the microlens satisfies the following relationship, i.e., 1<Lb/La≤3. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
