Design method of free-form surface progressive lens with astigmatism correction function and lens

Abstract

The invention discloses a design method of a free-form surface progressive lens with an astigmatism correction function and the lens. The method comprises the steps: building a human eye model, and enabling human eyes and the lens to form a complete optical system; determining a meridian of a diopter progressive curve of the lens; according to the human eye model and the meridian, acquiring a progressive lens through optimization; and carrying out astigmatism correction on the front surface of the progressive lens to obtain the free-form surface progressive lens with the astigmatism correction function. A simple and convenient design method is established, the problem that astigmatism correction of progressive lenses in the market is difficult can be solved, ZEMAX software can be used for implementation, and the cost is greatly reduced. 本发明公开了一种具有矫正散光的自由曲面渐进式镜片的设计方法及镜片，该方法包括：建立一个人眼模型，使人眼与镜片组成一个完整的光学系统；确定所述镜片的屈光度渐进曲线子午线；根据所述人眼模型和所述子午线，通过优化得到渐进片；在所述渐进片前表面上进行散光矫正，得到具有矫正散光的自由曲面渐进式镜片。本发明建立了一套简单方便的设计方法，能解决市面上渐进镜片矫正散光比较困难的问题，并且还能够利用ZEMAX软件实现，大大降低成本。