MDCP: Patent Abstact US05357498: Disc drive apparatus that positions an objective lens within a disc cartridge at the time when the disc is rotated

US05357498 Disc drive apparatus that positions an objective lens within a disc cartridge at the time when the disc is rotated

Assignee Sony Corporation

Assign./Filed Oct. 18, 1994/ Sept. 14, 1992

Inventors Yoshida; Tadao, Fujisawa; Hirotoshi

Summary Optical head arrangment where the head is moved close to the disk through the shutter opening in the cartridge.

Abstract A recording and/or reproducing apparatus is disclosed in which informational signals are recorded and/or reproduced by irradiating an optical disc 202 with a light beam from an optical pick-up device 1 through an recording and/or reproducing opening 205 which is formed in a disc cartridge 202 which rotatably houses an optical disc 203. The optical pick-up device 1 which is used for the recording and/or reproducing apparatus comprises a light source and an objective lens 5 for converging the light beam from the light source upon the signal recording area of the optical disc 203. When recording and/or reproducing of informational signal on and/or from the optical disc 203 is performed by the optical pick-up device 1, only the objective lens 5 is moved into the disc cartridge 202 via the recording and/or reproducing opening 205 formed on the disc cartridge 202 to shorten the distance between the objective lens 5 of the optical pick-up device 1 and the disc 203.

US05357498	Disc drive apparatus that positions an objective lens within a disc cartridge at the time when the disc is rotated
Assignee	Sony Corporation
Assign./Filed	Oct. 18, 1994/ Sept. 14, 1992
Inventors	Yoshida; Tadao, Fujisawa; Hirotoshi
Summary	Optical head arrangment where the head is moved close to the disk through the shutter opening in the cartridge.
Abstract	A recording and/or reproducing apparatus is disclosed in which informational signals are recorded and/or reproduced by irradiating an optical disc 202 with a light beam from an optical pick-up device 1 through an recording and/or reproducing opening 205 which is formed in a disc cartridge 202 which rotatably houses an optical disc 203. The optical pick-up device 1 which is used for the recording and/or reproducing apparatus comprises a light source and an objective lens 5 for converging the light beam from the light source upon the signal recording area of the optical disc 203. When recording and/or reproducing of informational signal on and/or from the optical disc 203 is performed by the optical pick-up device 1, only the objective lens 5 is moved into the disc cartridge 202 via the recording and/or reproducing opening 205 formed on the disc cartridge 202 to shorten the distance between the objective lens 5 of the optical pick-up device 1 and the disc 203.