Apparatus and methods are described including a progressive lens that is configured to provide a far-vision correction and a near-vision correction. The progressive lens includes a single-focus, far-vision corrective lens that is configured to provide only a portion of the far-vision correction, and a film coupled to the single-focus, far-vision corrective lens. The film defines a far-vision corrective portion that is configured to provide the remainder of the far-vision correction, a near-vision corrective portion that is configured to provide additive near-vision correction, and an intermediate portion in which the film transitions between the far-vision corrective portion and the near-vision corrective portion. Other applications are also described.

A mold for a plastic lens that arranges an insert member inside a cavity formed between a pair of halved molds, injects and fills molten raw material resin to mold a plastic lens having a predetermined shape, integrally with the insert member. The insert member is arranged on a molding surface on one of the halved molds, a notch to be engaged with a positioning tab formed at a periphery of the insert member is engraved on one parting surface of the halved mold, overlapping with a gate position. Positioning of the insert member is performed by engaging the positioning tab with the notch. With this configuration, in molding a plastic lens having an insert member by injection molding including insert molding, positioning of the insert member is performed at the gate position without deteriorating the quality of a molded product and without increasing the load of post-processing after molding.

Apparatus and methods are described including a progressive lens that is configured to provide a far-vision correction and a near-vision correction. The progressive lens includes a single-focus, far-vision corrective lens that is configured to provide only a portion of the far-vision correction, and a film coupled to the single-focus, far-vision corrective lens. The film defines a far-vision corrective portion that is configured to provide the remainder of the far-vision correction, a near-vision corrective portion that is configured to provide additive near-vision correction, and an intermediate portion in which the film transitions between the far-vision corrective portion and the near-vision corrective portion. Other applications are also described.

A mold for a plastic lens that arranges an insert member inside a cavity formed between a pair of halved molds, injects and fills molten raw material resin to mold a plastic lens having a predetermined shape, integrally with the insert member. The insert member is arranged on a molding surface on one of the halved molds, a notch to be engaged with a positioning tab formed at a periphery of the insert member is engraved on one parting surface of the halved mold, overlapping with a gate position. Positioning of the insert member is performed by engaging the positioning tab with the notch. With this configuration, in molding a plastic lens having an insert member by injection molding including insert molding, positioning of the insert member is performed at the gate position without deteriorating the quality of a molded product and without increasing the load of post-processing after molding.