Lens holder and optical pickup apparatus using the same
AssigneesSanyo Electric Co., Ltd., Sanyo Optec Design Co., Ltd.
InventorsMitsuhiro HASHIMOTO, Ryoichi Kawasaki
Life of this patent
Estimating the term…
Abstract
Provided is a lens holder comprising: a mounting hole into which a condenser lens part of the objective lens is to be inserted; a peripheral part which surrounds the mounting hole and on which a flange part of the objective lens is to be mounted; and three protrusions provided in the peripheral part to be spaced apart from each other and to protrude higher than a main surface of the peripheral part. Also provided is an optical pickup apparatus comprising the lens holder and an objective lens supported with a condenser lens part inserted into the mounting hole of the lens holder, and with the flange part being in contact with the three protrusions.
Claims11
A lens holder supporting an objective lens for focusing a laser beam on a signal recording layer of an optical disc, comprising:
- a mounting hole into which a condenser lens part of the objective lens is to be inserted;
- a peripheral part surrounding the mounting hole;
- and
- three protrusions provided in the peripheral part to be spaced apart from each other and to protrude from a main surface of the peripheral part, and configured to support a flange part of the objective lens by being in contact with the flange part.
Dependencies are inferred from the claim text.