| 摘要 |
PURPOSE:To make a mirror holder lightweight and small-sized and to reduce the production cost by constituting the mirror holder with one connecting bar and two holding plates provided in both ends of this connecting bar. CONSTITUTION:The mirror holder holds the second mirror 3 and the fourth mirror 4 orthogonally to each other and is movable on a scanning guide. The mirror holder is constituted with one connecting bar 10 and two holding plates 20 and 30 provided in both ends of this connecting bar 10. Both ends of mirrors 3 and 4 are inserted into rectangular holes 21, 22, 31, and 32 formed in the holding plates 20 and 30 to hold mirrors 3 and 4, and mirror surfaces are pressed to projections 23, 23, 24 and 24 formed in rectangular holes 21 and 22 and projections 33 and 34 formed in rectangular holes 31 and 32 to position mirrors 3 and 4. |
