Ring focus spectacle lens for controlling myopia deepening

Abstract

The utility model discloses a ring focus spectacle lens for controlling myopia deepening. 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. According to the ring-focus spectacle lens, the smoothly-connected generatrix is obtained through a tangent continuous connection mode and the like, and the generatrix is rotated to form a free-form surface, so that no seam exists between concentric rings with different focal powers, and the ring-focus spectacle lens is as attractive as a common spectacle lens. 本实用新型公开一种用于控制近视加深的环焦眼镜片。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。通过相切连续等的连接方式得到连接平滑的母线，母线再经过回转形成自由曲面，使得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。