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Optimal low optical aberration anti-myopia scieropia spherical lens

A fog vision and lens technology, applied in glasses/goggles, optics, instruments, etc., can solve problems such as difficulty in implementation and increase in aberration, and achieve the effect of reducing cost, avoiding image distortion, and strictly controlling aberration

Inactive Publication Date: 2008-12-03
杨江南
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Problems solved by technology

However, he finally gave up the patent because he did not solve the problem of increasing aberrations (including imaging distortion and the difference in the size of the two images) after the optical center of the lens moves inward.
At present, decentralization is mainly theoretical, and it is still difficult to realize it.

Method used

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Experimental program
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Effect test

Embodiment Construction

[0004] Assuming that the glasses are worn in the normal orientation, in the process of making the glasses, not only the optical center of the lens is moved to the center of the frame, but also moved downward. When the optical center of the lens is moved down, the optical center is no longer used, so a round lens can cut out the two lenses needed to make a pair of glasses.

[0005] For example, existing lenses with a refractive index of 1.499 and a diameter of 70mm are available. A person without myopia and with an interpupillary distance of 60mm has an average reading distance of 30cm. After adding +2.00D lenses to him, the optical center needs to be 24.5mm from the vertical centerline of the frame and move down by 18.1mm. When he looks at a distance of 30cm, he feels that the distance is 31.9cm, and the relative difference in the imaging size of the object at 4cm in front of the eyes to the left or right is 4.4%. These data are strictly calculated through the computer progra...

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Abstract

The invention relates to glasses provided with myopic-prevention scieropia spherical lenses of optimal low optical aberration. The lenses, which are mainly used for myopic prevention by the 'scieropia method' widely recognized in the medical field to reduce the burden on crystalline lens for myopic prevention, can also be used for reducing the imaging distortion of presbyopic glasses. The glasses can strictly control the optical aberration, avoid imaging distortion, select the optimal design scheme according to different physiological conditions and habits of using eyes of different people, and reduce the cost for using the lenses by half. During fabrication, the optical center is not only moved inwards, but also creatively moved downwards (quantitative), so that a round lens can be cut into two lenses needed by a pair of glasses.

Description

technical field [0001] The glasses are mainly used to prevent myopia. It uses the "fog vision method" generally recognized in medicine. By using a convex lens to share a part of the curvature of the lens, when people wear it and look at the near (such as reading), the eyes are in the extreme of the lens. The state of being relaxed when looking at a distance can fundamentally prevent the occurrence of myopia and curb the deepening of myopia. Background technique [0002] Fog vision method has long been generally recognized in medicine. About ten years ago, some people also invented off-centre myopia prevention glasses, which roughly solved the contradiction between collection and adjustment imbalance after wearing foggy glasses. However, he finally gave up the patent because he did not solve the problem of increasing aberrations (including imaging distortion and the difference in the size of the images of the two eyes) after the optical center of the lens moved inward. At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02
Inventor 杨江南
Owner 杨江南
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