| 摘要 |
The present invention provides a plastic lens which can simplify the installation, can enhance the forming accuracy and can exhibit extremely small optical irregularities. Molds having a planned combination are heated, using at least one pre-numerically controlled automatic chucking transport device and/or manually, the molds are constituted to be sequentially overlapped in accordance with the combination. First of all, an optical thermoplastic resin molten material having an extremely small agitation flow is placed on a forming surface of one lower mold. Subsequently, a forming surface of another upper mold is brought into contact with the resin molten material by inclining the posture of the upper mold, and both molds are made to approach each other to define a given distance therebetween so as to form a lens by pressing the resin molten material.
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