Design for progressive addition lenses

Quanying Wu; Lin Qian; Jingchi Yu; Hao Chen; Yuanyuan Wang

doi:10.1117/12.782814

16 November 2007 Design for progressive addition lenses

Quanying Wu, Lin Qian, Jingchi Yu, Hao Chen, Yuanyuan Wang

Proceedings Volume 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 67220C (2007) https://doi.org/10.1117/12.782814
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

Progressive addition lenses design is focused on utilizing the shape of lens surface, which is not rotationally symmetric, and provides power addition. The lenses should meet power variation progressively without allowing the aberrations to attain detrimental values. The principle and e idea of designing progressive addition lenses are introduced. Several kinds of design methods are illustrated, and their advantages and drawbacks are also represented. Based on one of design methods, which the distance and near power points are determined firstly, then an umbilic line of progressive dioptric power is optimized to satisfy realistic requirements on stability of power and binocular compatibility, the form of the progressive power surface will be gotten, a progressive addition lens design that matches the particular visual needs of the patient is given out. Progressive addition lenses were manufactured with Satisloh VFT-compact machine. The lenses manufactured were measured using the Class Plus lens analyzer to provide sphere and cylinder across the surface of the lens. The results of measurement show that the lenses having a progressive power surface with a near portion and a distance portion, the near portion being of higher power than the distance portion, the form of the progressive power surface of the lens is effective to distribute surface astigmatism. In the current study, it is also shown that the optical characteristics of the different progressive addition lenses designs are significantly different from one another. The lenses designed and manufactured meet the needs. Compared with the lenses designed using Seiko software, the performance is similar with each other.

Citation Download Citation

Quanying Wu, Lin Qian, Jingchi Yu, Hao Chen, and Yuanyuan Wang "Design for progressive addition lenses", Proc. SPIE 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 67220C (16 November 2007); https://doi.org/10.1117/12.782814

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