Staas & Halsey
Optical pickup having plural optical sources and plural optical detectors
 An optical pickup capable of compatibly adopting disks of different formats which are placed in an optical player includes a first optical source for emitting light having a predetermined wavelength, a second optical source for emitting light having a wavelength different from that of light emitted from the first optical source, an objective lens for focusing light emitted from the respective first and second optical sources on a recording medium placed in the optical player, a light path changing unit disposed on a light path between the first and second optical sources and the objective lens for changing the traveling path of incident light, a first optical detector for receiving light emitted from the first optical source and is incident via the recording medium and the light path changing unit, and a second optical detector for receiving light emitted from the second optical source and is incident via the recording medium and the light path changing unit. 
Samsung Electronics Co., Ltd.
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G11B G11B G11B G11B G11B
inventional inventional inventional additional inventional
Chul-woo Chong-sam Yong-hoon Hyun-seob Kun-ho Pyeong-yong Tae-kyoung No-kyong Dong-ho
Lee Chung Lee Choi Cho Seong Kim Park Shin