Patent application number | Description | Published |
20100171127 | OPTICALLY COUPLED DEVICE AND METHOD OF MANUFACTURING THE SAME - An optically coupled device includes a light emitting element and a light receiving element which are electrically isolated from each other, and an optical waveguide allowing therethrough transmission of light from the light emitting element to the light receiving element, wherein the optical waveguide is covered with an encapsulation resin containing a light reflective inorganic particle which is typically composed of titanium oxide, the light emitting element and the light receiving element are respectively provided on a base (for example, package terminals), and the entire portion of the outer surface of the optical waveguide, brought into contact with none of the light emitting element, the light receiving element and the base, is covered with the encapsulation resin. | 07-08-2010 |
20120104636 | METHOD OF MANUFACTURING AN OPTICALLY COUPLED DEVICE - An optically coupled device includes a light emitting element and a light receiving element which are electrically isolated from each other, and an optical waveguide allowing therethrough transmission of light from the light emitting element to the light receiving element, wherein the optical waveguide is covered with an encapsulation resin containing a light reflective inorganic particle which is typically composed of titanium oxide, the light emitting element and the light receiving element are respectively provided on a base (for example, package terminals), and the entire portion of the outer surface of the optical waveguide, brought into contact with none of the light emitting element, the light receiving element and the base, is covered with the encapsulation resin. | 05-03-2012 |
Patent application number | Description | Published |
20080298195 | Optical recording method and optical recording device - To adjust the parameters of a write strategy for recording data on an optical recording medium, the jitter value of a reproduced signal obtained from recorded data is detected. If the jitter value exceeds a prescribed threshold, a write strategy parameter having a comparatively small effect on the jitter value is adjusted, and subsequent data are written on the recording medium using the adjusted parameter. Parameters are selected for adjustment in ascending order of their effect on the jitter value. Stable data recording can thereby be carried out without significant jitter degradation. | 12-04-2008 |
20110235482 | OPTICAL INFORMATION PROCESSING METHOD AND OPTICAL INFORMATION PROCESSING APPARATUS - An optical information processing method and apparatus performs a light irradiating and receiving step, a signal processing step, and an adjusting step of a spherical aberration and a focus offset on the basis of shift amount of first and second control devices and a performance evaluation value. The performance evaluation values for first, second, third and fourth points in an x and y coordinate system are detected, in which an x-coordinate is one of the shift amount of the first control device and the shift amount of the second control device and a y-coordinate is the other, the first point, second and third points having the same y-coordinate and different x-coordinates with each other, the fourth point being provided on a first straight line passing through the first point and being different from the first point. | 09-29-2011 |
20110317534 | OPTICAL DISC REPRODUCTION POWER SETTING METHOD, OPTICAL DISC REPRODUCTION METHOD, AND OPTICAL DISC DEVICE - According to a method for setting the laser beam power applied to reproduce information recorded on an optical disc, information recorded in a region on the optical disc is reproduced using three or more test reproduction powers (S | 12-29-2011 |
20130044576 | OPTICAL RECORDING/REPRODUCTION METHOD AND OPTICAL RECORDING/REPRODUCTION DEVICE - An optical recording/reproduction method and device that can perform control for optimizing the amount of spherical aberration in a multilayered optical disc in a short period of time. When the objective lens is displaced in the focusing direction, the amplitude value of the focusing error signal detected just after leaving the focal position of a given first recording layer and the amplitude value of the focusing error signal detected just before passing through the focal position of a given second recording layer other than the first recording layer are measured with a particular spherical aberration, the amplitude ratio of amplitude values is calculated, the difference between spherical aberration and the optimal spherical aberration for the second recording layer is approximated as a function of the amplitude ratio, the optimal spherical aberration is calculated on the basis of this approximation, and the spherical aberration is set. | 02-21-2013 |
20150085631 | TRACKING CONTROL METHOD, TRACKING CONTROL DEVICE, AND OPTICAL DISC DEVICE - A tracking control method relates to an optical pickup | 03-26-2015 |