Design method for aspherical spectacle lens based on human eye dynamical optical axis
A production method and aspheric surface technology, which is applied in glasses/goggles, optics, instruments, etc., can solve the problems of poor imaging performance and comfort of lenses, avoid imaging jumps, avoid uneven off-axis aberrations, and achieve perfect The effect of vision correction
Inactive Publication Date: 2015-04-22
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
As the eye rotates, the effective light for imaging passes through different areas of the lens, but the existing aspheric lens design method does not take this factor into account, resulting in poor imaging performance and comfort of the lens
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[0016] The method for manufacturing the aspheric spectacle lens based on the dynamic visual axis of the human eye provided by the present invention will be described in detail below with reference to the accompanying drawings.
[0017] figure 1 It is a schematic diagram of the distribution of the microelement lens array on the aspherical spectacle lens.
[0018] Such as figure 1 As shown, the aspheric ophthalmic lens 10 includes a blank lens 11 , a central microelement 12 , and microelements distributed in an array and covering the entire aspheric ophthalmic lens 10 .
[0019] Step 1: Set the horizontal curve that fits the blank lens 11 and passes through its center as the horizontal meridian 14, and the horizontal meridian 14 conforms to a high-order polynomial. The midpoint of the horizontal meridian 14 is the center of the blank lens 11 , and the curvature of the horizontal meridian 14 is consistent with the surface curvature of the blank lens 11 .
[0020] Step 2: respe...
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A provided design method for an aspherical spectacle lens based on human eye dynamical optical axis is characterized by comprising the following steps: step 1, designing a horizontal meridian according to a high-order polynomial; step 2, based on human eye optical axis variation, respectively designing differential-element lenses at the center and at one side of the horizontal meridian; step 3, rotating the differential-element lenses designed in the step 2 round the center of a spectacle lens blank for one cycle, so as to obtain a differential-element lens array covering the spectacle lens blank; and step 4, performing surface reconstruction on overlapped areas of adjacent differential-element lenses, performing integral curved surface fitting on the whole differential-element lens array, calculating optimum spherical degree and performing optimization, so as to obtain dot-matrix processing data of the aspherical spectacle lens. According to the design method for the aspherical spectacle lens based on human eye dynamical optical axis, the dynamical variation of human eye optical axis is considered, and the aspherical spectacle lens capable of being wore comfortably and avoiding imaging jump and off-axis aberration is designed, and the aspherical spectacle lens helps to provide perfect eyesight rectification for a wearer.
Description
technical field [0001] The invention relates to a production method of spectacle lenses, in particular to a production method of aspheric spectacle lenses based on the dynamic visual axis of human eyes. Background technique [0002] Glasses are imaging lenses used to correct a variety of human vision problems, including nearsightedness, farsightedness, astigmatism, presbyopia or strabismus. Commonly used spectacles are mainly used to correct ametropia, that is, to correct nearsightedness or farsightedness with a concave or convex lens of appropriate focal power. [0003] Aspheric ophthalmic lens is a very complex optical component, and its research involves the intersection of many disciplines such as optics, ergonomics and mathematics. The development of aspheric glasses has gone through more than a century, and now optical engineers and mathematicians around the world are still exploring in order to gradually improve the performance of aspheric glasses in all aspects. Co...
Claims
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IPC IPC(8): G02C7/02
Inventor 许江华庄松林
Owner UNIV OF SHANGHAI FOR SCI & TECH