Ring focus ophthalmic lens for controlling myopia deepening and manufacturing method thereof

Abstract

The invention discloses a ring focus spectacle lens for controlling myopia deepening and a manufacturing method thereof. The ring-focus spectacle lens can provide clear vision for a patient, and is also provided with a plurality of ring-shaped defocusing areas to form an optical defocusing effect. Due to the tangent continuous connection mode, no seam exists between the concentric rings with different focal powers, so that the ring-focus spectacle lens is as attractive as a common spectacle lens. According to the manufacturing method disclosed by the invention, the three front mold cores, the set of rear mold core and the planar rear mold core are used for manufacturing a series of ring-focus spectacle lenses with different degrees, so that the number of the mold cores and the production cost are reduced. Meanwhile, according to the manufacturing method, a semi-finished lens is provided aiming at the requirements of high myopia degree and high astigmatism degree, so that the number of mold cores is greatly reduced, the stock number of required lenses is also reduced, and the cost is reduced. 本发明公开一种用于控制近视加深的环焦眼镜片及其制造方法。该环焦眼镜片能为患者提供清晰视力的同时，也具有多个环形散焦区以形成光学离焦效果。由于通过相切连续的连接方式，不同光焦度的同心环之间不具有接缝，使该环焦眼镜片如普通眼镜片一样美观。本发明的制造方法使用三个前模芯、一套后模芯和一个平面后模芯以制造一系列的具有不同度数的环焦眼镜片，从而减少模芯数量和生产成本。同时，该制造方法针对高近视度数高散光度数的需求，提供一种半成品镜片，这不仅大大减少模芯数量，也减少所需镜片的库存数量，从而降低成本。