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Ophthalmic diffractive multi-focal lens and method for manufacturing ophthalmic diffractive multi-focal lens
Ophthalmic diffractive multi-focal lens and method for manufacturing ophthalmic diffractive multi-focal lens
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机译：眼科衍射多焦透镜及其制造眼科衍射多焦点透镜的方法
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摘要
Provided is an ophthalmic diffractive multi-focal lens with a diffractive structure including a phase profile in which a plurality of blaze shaped zones are set in a concentric circle form, wherein: at least one of the zones serves as an adjustment zone wherein an inclination direction in the phase profile is reversed with respect to that of other zones; and a light intensity level giving a peak or focal point at a position away from three focal points in a light intensity distribution of transmitted light in an optical axis direction is kept low in comparison with a phase profile without the adjustment zone.
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