发明授权
US4842388A Single optical lense with diffraction limit converging capability and wide field angle 失效
具有衍射极限收敛能力和宽视场角的单光学透镜

Single optical lense with diffraction limit converging capability and
wide field angle
摘要:
A single lens having first and second aspherical surfaces each having a positive power is usable for, an objective lens of an optical pickup for an optical recording medium. The lens satisfies the following conditions:0.1
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