公开(公告)号：US3645610A

公开(公告)日：1972-02-29

申请号：US3645610D

申请日：1970-05-18

Applicant: TEXTRON INC

Inventor： DUCKWALL FRANK E ,  LABELLE EDWARD J

IPC: G02C7/02

CPC classification number: G02C7/02

Abstract: A new and improved method of designing an ophthalmic lens series and a new and improved ophthalmic lens series. The method takes into consideration numerous factors affecting lens performance and by means of systematic calculations and graphical analysis provides the lens designer with a means for determining, for any given prescriptive power, the lens shape which will provide optimum visual acuity at angles of viewing up to 40* from the optical axis of the lens, simultaneously giving consideration to tangential and sagittal power errors, errors of astigmatism, variations in stop distance, ability of the eye to accommodate for certain errors, lens thickness, visual tasks of the wearer determined by statistical techniques, and many other factors. The lens series may cover the entire range of ophthalmic prescriptions and provides lenses having increased visual acuity over the whole area of the lens including angles of view up to 40* from the optical axis of the lens. A comparatively small number of groups of lenses are used, each group having one base curve identical for all lenses of the group.

Abstract translation: 一种新的改进的眼科镜片系列设计方法和新型改进的眼科镜片系列。 该方法考虑了影响透镜性能的许多因素，并通过系统计算和图形分析，为镜头设计者提供了一种手段，用于为任何给定的规定功率确定透镜形状，其将在观看角度提供最佳视敏度 40度从镜头的光轴，同时考虑到切向和矢状功率误差，散光误差，停止距离的变化，眼睛适应某些误差的能力，镜片厚度，佩戴者的视觉任务由统计学确定 技术等诸多因素。 透镜系列可以覆盖整个眼科处方范围，并且提供在透镜的整个区域上具有增加的视力的透镜，其包括从透镜的光轴高达40°的视角。 使用相对较少数量的透镜组，每组具有与该组的所有透镜相同的一个基本曲线。