Spiral Diopter

2024: Product Announcement

On February 8, 2024, French researchers from the Laboratory of Photonics, Numerical and Nanoscience (LP2N) reported on the development of a new type of lens that creates several focal points, which allows you to see further and clearer. The development was called "Spiral Diopter."

The lens of the human eye naturally focuses light on the retina, but genetic, environmental or age factors can disrupt the natural mechanism. Incorrect focus location results in blur. The problem can be solved using corrective lenses with certain curvature, thickness and shape - these parameters are selected depending on the individual needs of each person. Usually, the lens has only one focal point, but multifocal lenses also exist: they allow you to see well both far and close, but can provoke distortion. The new "spiral diopter" is devoid of this drawback.

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L2PN

The developed lens has a spiral shape that creates three different foci in the field of view. Unlike existing multifocal products, this lens works well in a wide range of lighting conditions and retains multifocality regardless of pupil size.

The spiral design creates a so-called optical vortex that essentially causes light to rotate like water in a sink drain. In the manufacture of the solution, modern digital processing technologies were used. To check the effectiveness, the clarity of the letters on the light board was evaluated. Volunteers reported that the images looked clearer at different distances and under different lighting. At the next stage, the project participants intend to find out how well the "spiral diopter" is suitable for correcting vision in real conditions.^[1]

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