| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screen unit which is assembled easily and has high accuracy and of which the cost is reduced. <P>SOLUTION: The screen unit includes: an upper horizontal rim 21, lateral vertical rims 22, and a lower horizontal rim 23 U-shaped in cross section that cover four side outer peripheries of a laminated body including a thin sheet glass 12, a Fresnel lens sheet 11 that is a part of a cylindrical surface with an axis line extending in a first direction parallel to the thin sheet glass and is warped in a shape convex toward a side of the thin sheet glass 12, and a lenticular lens sheet 13 that is a part of a cylindrical surface with an axis line extending in a direction perpendicular to the first direction, is warped in a shape convex toward a side of the thin sheet glass, and sandwiches the thin sheet glass 12 with the Fresnel lens sheet 11. The upper horizontal rim loosely holds the outer periphery of the laminated body fitted therein with a clearance therebetween. The side rims and lower horizontal rim have elastic members each located between an inner side surface of a U-shape in cross section and a concave surface of the Fresnel lens sheet 11 and lenticular lens sheet 13, and pinches the first lens sheet and the second lens sheet to be pressed against the thin glass sheet with biasing force of the elastic member to support the first lens sheet and the second lens sheet. <P>COPYRIGHT: (C)2011,JPO&INPIT |
