| 摘要 |
PROBLEM TO BE SOLVED: To provide injection molding equipment for lens formation which can easily enhance the accuracy of optical lenses having optical information patterns. SOLUTION: The injection molding is equipped with a stationary mold 5 and movable mold 6 which are attachably and detachably arranged to face each other and are injected and packed with a molten resin, pattern forming sections 8 for the optical information patterns which are disposed in a plurality in a concentric form in the cavity 7 of the either one mold of the stationary mold 5 and the movable mold 6, lens forming sections 9 which are disposed in the positions facing the pattern forming sections 8 within the cavity 7 of the mold facing the mold provided with the pattern forming sections 8 and form spherical shapes, and aligning members 10 which are disposed to project to the other mold side in the either one mold of the stationary mold 5 or the movable mold 6, are inserted into insertion ports 11 disposed at the other mold when the stationary mold 5 and the movable mold 6 are closed and which align the stationary mold 5 and the movable mold 6. COPYRIGHT: (C)2005,JPO&NCIPI |
