Invention Grant
US08406108B2 Objective lens for optical pickup and optical pickup device 失效
用于光学拾取和光学拾取装置的物镜

Objective lens for optical pickup and optical pickup device
Abstract:
An objective lens for an optical pickup device is provided with a light-source-side lens surface by which laser light is converged, and a disc-side lens surface by which the laser light converged by the light-source-side lens surface is converged. The first lens surface and the second lens surface are configured to guide a part of a light collecting portion of the laser light reflected on the second lens surface to a position on an outside of the first lens surface.
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