| 摘要 |
<p>A spectacle lens with a high positive refracting power, whose front surface has an aspheric, rotationally symmetric effective part. The effective part is configured in accordance with the following equation: <IMAGE> where z is the sagitta, h is the distance from the optical axis, C is determined by the desired refracting power of the front surface at the vertex, and K and Ii are aspheric coefficients. The aspheric coefficients K and Ii are determined so that either the visual acuity V is a maximum or ¦ DELTA R¦+¦ DELTA S¦ is a minimum. The lens produces a pattern of aberration which allows complete utilization of the visual field for dynamic vision.</p> |
