Object lens unit and optical pickup device employing the unit

Details Object lens unit and optical pickup device employing the unit Object lens unit and optical pickup device employing the unit

2007-11-26

2008-12-23

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With support

C359S814000, C359S819000, C359S823000, C369S044230, C369S044120

Reexamination Certificate

active

07468849

ABSTRACT:
An object lens unit for an optical pickup device is disclosed. The object lens unit includes a first optical element facing an optical information recording medium; a second optical element positioned on a light source side of the first optical element; and a frame in which the first optical element and the second optical element are fixed. The frame includes a first fitting portion and a second fitting portion, and has a prescribed clearance in a perpendicular direction to the optical axis between at least one of the first fitting portion of the frame and the first optical element, and the second fitting portion of the frame and the second optical element to adjust a position of at least one of the first optical element and the second optical element in a perpendicular direction to the optical axis. An optical pickup device including such object lens unit is also disclosed.

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