| 摘要 |
PURPOSE:To hold a lens independently of the curvature of the lens and prevent separation of a reflection preventing film on the rear face of the lens by evacuating the part between two annular members, which can be moved in the axial direction, to hold the lens there. CONSTITUTION:An outside wheel member 2 having an annular projecting part 2a is fixed to a supporting body 10 by screw 13, and an inside wheel member 1 having an annular projecting part 1a is provided in the outside wheel member 2 movably in the axial direction. When a concave lens 16 is sucked and held, a knob 4 is turned to project the inside wheel member 1 to the side of the lens 16, and the inside is evacuated through a vacuum pressure guide hole 2b to suck the lens 16. Therefore, the lens is held even if its size and curvature are changed. Since the lens has the peripheral part sucked, separation of the reflection preventing film applied to the center part of the rear face of the lens is prevented. |
