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

2007-11-27

2007-11-27

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With support

C359S811000, C359S823000

Reexamination Certificate

active

11221657

ABSTRACT:
An object lens unit for an optical pickup comprising: a first optical element positioned facing an optical information recording medium; a second optical element positioned on a light source side of the first optical element; and a frame which has a first reference surface in contact with the first optical element to position the first optical element in an optical axis direction and a second reference surface in contact with the second optical element to position the second optical element in the optical axis direction so that the first optical element and the second optical element are fixed to be integrated with the frame, wherein the first optical element, the second optical element and the frame are attached, as a single optical component, to another member.

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