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Experimental simulation of presbyopia compensation by means of the light sword optical element

机译:用光剑光学元件补偿老花眼的实验模拟

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The contribution presents a real scene imaging by a lens coupled with the light sword optical element. The experiments give evidence that the light sword optical element is a very promising device for compensation of presbyopia of the human eye.IntroductionAfter an age of 50 years the human eye loses its accommodation ability. This phenomenon is termed as a presbyopia. It means that it is necessary to use glasses anytime one wants to observe near objects. The most common solution of this problem is to use multifocal or progressive lenses. Some parts of them have imaging properties designed for near objects (reading) and other parts are appropriate for distant objects. Unfortunately, when ability of a human eye lens to change its optical power does not exist then a multifocal lens can image sharply objects located in only discrete distances. Most often it is 2-3 specific distances depending on a design. Axicons and axilenses are designed for continuous range of object distances but images formed by them have usually a very poor contrast and their quality strongly depends on an aperture diameter [1,3]. This problem does not exist when we substitute a radial modulation of the optical power by an angular one [1,3].
机译:该贡献通过与光剑光学元件耦合的透镜呈现真实场景成像。实验表明,光剑光学元件是补偿人眼老花眼的非常有前途的设备。 介绍 50岁后,人眼失去了适应能力。这种现象被称为老花眼。这意味着在任何人想要观察附近物体时都必须戴眼镜。解决此问题的最常见方法是使用多焦点或渐进镜片。它们的某些部分具有为附近物体(读取)设计的成像属性,而其他部分则适合于远处的物体。不幸的是,当不存在人眼透镜改变其光焦度的能力时,多焦点透镜可以对仅位于离散距离内的物体进行清晰成像。根据设计,通常是2-3个特定距离。轴锥和轴锥是为连续的物距范围而设计的,但是由它们形成的图像通常对比度很差,其质量在很大程度上取决于孔径[1,3]。当我们用角1 [1,3]代替光功率的径向调制时,这个问题就不存在。

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