Optical pickup lens, and optical pickup unit comprising the same
AssigneeSharp Kabushiki Kaisha
InventorAkihiko Daikoku
Life of this patent
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Abstract
The present invention provides an optical pickup lens comprising a lens and a lens holder, each of which has at least one mark in a direction of rotation based on an optical axis of the lens as a center of rotation. The mark(s) of the lens holder is provided so as to oppose the mark(s) of the lens. Preferably, the marks of the lens and the marks of the lens holder are provided at regular intervals. Since both the lens and the lens holder have the marks thereon, the lens can be easily and correctly mounted on the lens holder at a predetermined angle in the direction of rotation of the lens based on the center of rotation of the lens, and in shorter time. Therefore, the optical pickup lens can be easily and correctly manufactured in shorter time.
Claims17
An optical pickup lens comprising a lens and a lens holder, wherein each of the lens and the lens holder has at least one mark in a direction of rotation based on an optical axis of the lens as a center of rotation.
Dependencies are inferred from the claim text.