| 摘要 |
<p>DIFFRACTIVE MULTIFOCAL LENSThere is provided a diffractive multifocal lens, wherein a diffraction phase structure of a diffraction pattern has a structure expressed by the following formula:[err] wherein [err] indicates a position in a radial direction of the lens in one period of the diffraction pattern,and [err][err] indicates a value (radian) of a phase shift amount of light passing through the position of [err] from the phase of light passing through a reference plane.</p> |
