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US 5,708,641 AGranted
Multiple focus optical pickup system
AssigneeDaewoo Electronics Co., Ltd.
InventorsYang-Oh Choi, Ki-Tae Kim
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AssigneeDaewoo Electronics Co., Ltd.
InventorsYang-Oh Choi, Ki-Tae Kim
Estimating the term…
An optical pickup system for reproducing information signals stored on a first and a second optical disks loaded on a disk tray is described wherein each of the optical disks has a different thickness. The optical system includes a light source for generating a parallel light beam and an optical device provided with a first and a second part, wherein a portion of parallel light beam impinging onto the first part is focused onto the first optical disk, and the remaining portion of the parallel light beam impinging onto the second part is focused onto the second optical disk, thereby allowing the optical pickup system to read the information signals off the respective optical disk.
An optical device for use in an optical pickup system, said device comprising:
An optical pick-up system for reproducing information signals stored on a number of optical disks loaded on a disk tray, wherein each of the optical disks has a respective recording surface, said system comprising:
An optical pickup system for reproducing information signals stored on a first and a second optical disk loaded on a disk tray, wherein each of the optical disks having a recording surface is of a different thickness, said system comprising:
Dependencies are inferred from the claim text.