| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid bending and wrinkling of an optical sheet. <P>SOLUTION: An optical sheet unit 20 is such that a plurality of translucent optical sheets 22 are held in a stacked state by a holding member 23. The respective optical sheets 22 have holding holes 24, linked to one another in the stacked state, respectively. The holding member 23 comprises a shaft part 25 inserted into the respective holding holes 24 and a pair of lock parts 26 which project from both ends of the shaft part 25 in directions crossing its axis. The holding member 23 is so formed that the shaft part 25 is sized forming a clearance for the diameter of the holding holes 24 and both the lock parts 26 have a mutual distance giving a clearance for the total thickness of the stacked optical optical units 20. <P>COPYRIGHT: (C)2008,JPO&INPIT |
