Patent application number | Description | Published |
20090010118 | OPTICAL DISK UNIT - To provide an optical disc drive that can shift the focal point steadily to a focus controllable range. | 01-08-2009 |
20090022039 | Optical Pickup and Objective Optical System for Use in the Same - An optical pickup ( | 01-22-2009 |
20090040909 | Optical head device and optical information device - An optical head device is provided with a light source | 02-12-2009 |
20090046564 | OPTICAL HEAD AND OPTICAL DISC DEVICE - In an optical head ( | 02-19-2009 |
20090107843 | MICROCHIP PROCESSING METHOD AND APPARATUS - The processing apparatus for microchips, each at least having a main flow path performing migration of a sample for analysis inside a sheet-like member, comprises a holding part holding microchips so that the multiple main flow paths are provided; a pretreatment part common to the multiple main flow paths for performing a pretreatment step prior to an analysis step in each of the multiple main flow paths; a processing part for performing analysis in each of the main flow paths independently of the others; and a control part controlling an operation in the pretreatment part so that when a pretreatment step for one main flow path ends, a pretreatment for a next main flow path starts and further controlling an operation in the processing part so that an analysis is subsequently performed for the main flow path where the pretreatment step has ended. | 04-30-2009 |
20090135687 | OPTICAL HEAD, CONTROL METHOD FOR OPTICAL HEAD, AND OPTICAL INFORMATION PROCESSING APPARATUS - An optical head includes a hologram which extracts, from a luminous flux of reflected light from an optical disk, at least a first luminous flux branch which does not include the optical axis of the luminous flux; and a photodetector which receives the reflected light from the optical disk and produces signal output, wherein the photodetector has light-receiving areas which receive the first luminous flux branch of reflected light from an optical information recording medium layer targeted for recording or playback out of the plurality of optical information recording medium layers of the optical disk, the light-receiving areas are placed in such a way that the signal output resulting from a light spot formed by the first luminous flux branch of the reflected light from the optical information recording medium layer targeted for recording or playback is practically the same between the first and second photodetection areas, and a boundary line of the light-receiving areas is located in such a position as not to include light spots formed by luminous fluxes of reflected light from the optical information recording medium layers other than the optical information recording medium layer targeted for recording or playback. | 05-28-2009 |
20090257340 | OPTICAL HEAD - To provide an optical head to produce good servo and read signals by reducing the influence of interference by light reflected from a non-read layer of a multilayer optical disc. | 10-15-2009 |
20090279399 | OPTICAL HEAD AND OPTICAL DISC DEVICE - A tilt can be detected highly accurately by minimizing the tilt detection error. An optical head includes: an objective lens for converging a light beam from a light source onto an optical disc; a photodetector section receiving the beam, reflected from the disc, at divided areas on its photodetection plane and outputting light detection signals from those areas; and a tilt detecting section for detecting a relative tilt between the lens and disc based on the detection signals. The tilt detecting section generates a first push-pull signal PP | 11-12-2009 |