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US 2004/0202063 A1Published application
Optical disk apparatus
OwnerOsamu Mizuno, Tohru Nakamura +1inventors
InventorsOsamu Mizuno, Tohru Nakamura, Hideki Aikoh
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OwnerOsamu Mizuno, Tohru Nakamura +1inventors
InventorsOsamu Mizuno, Tohru Nakamura, Hideki Aikoh
Estimating the term…
An optical disk apparatus is provided which is capable of certainly preventing an optical disk from coming into contact with an objective lens, even when its power is kept turned off and servo control is not in operation, and preventing an optical disk from hitting the objective lens, even though it undergoes a strong disturbance. A cartridge 2 includes an opening portion through which an objective lens 4 comes close to an optical disk 1 and a rib 2b which is formed near the cartridge outer-edge connection part of the opening portion; the plane of the rib 2b on the side of the objective lens 4 is substantially on the same plane with the plane of incidence of the optical disk 1; when an optical disk apparatus 100 is turned off, a traverse mechanism 22 moves the objective lens 4 and a protective member 5 to a position P2 that faces the plane of the rib 2b on the side of the objective lens 4 when the cartridge 2 is housed in the optical disk apparatus 100.
An optical disk apparatus, which includes at least an objective lens that converges and applies a laser beam onto an optical disk, a protective member that protects the objective lens, protrudes on the side of the optical disk from the objective lens and is disposed out of an optical effective range of the objective lens, and a traverse mechanism that moves the objective lens and the protective member, comprising,
Dependencies are inferred from the claim text.