Class / Patent application number | Description | Number of patent applications / Date published |
369120000 | Having particular radiation sensor | 8 |
20090016200 | METHOD OF MANUFACTURING PIN PHOTODIODE - The objective of this invention is to provide a type of photodiode and the method of manufacturing the photodiode characterized by the fact that it has a higher photoelectric conversion efficiency (sensitivity) than that in the prior art. PIN photodiode | 01-15-2009 |
20090092031 | OPTICAL PICKUP MODULE AND MANUFACTURING METHOD THEREOF - Disclosed are an optical pickup module and a manufacturing method thereof. The manufacturing method of an optical pickup module includes: forming a wet-etching mask layer at an outer portion of an upper surface of a silicon substrate to be used as a sub mount; etching a middle portion of the silicon substrate by using the wet-etching mask layer thereby forming a cavity, forming an inclination surface at the etched portion, and then removing the wet-etching mask layer; forming an insulating layer on an entire upper surface of the to silicon substrate; forming an electrode layer on an upper surface of the insulating layer; forming adhesive layers at a part of an upper surface of the electrode layer; and arranging a light emitting device at an upper surface of one adhesive layer and arranging an MPD at an upper surface of another adhesive layer by a fixation thereby completing an optical pickup module. | 04-09-2009 |
20090296561 | MULTI-SPOT DETECTOR ARRANGEMENT FOR MULTI-LAYER RECORD CARRIERS - The present invention relates to a detector configuration, pickup device and driving device for multi-layer record carriers, wherein main beam detector means and two pairs of side-beam detector means disposed on opposite sides of the main beam detector means are provided for suppressing crosstalk effects. As an example, the two three-spot systems obtained can be used for focus error signals and tracking error signals, respectively, wherein satellite spots can be controlled to have a desired fringe pattern either in-phase or anti-phase with that of the main beam. Besides the reduction of focusing and tracking errors, the above measure allows to reduce spacer layer thickness. | 12-03-2009 |
20090296562 | PHOTOELECTRIC CONVERTING DEVICE, AND OPTICAL DISK APPARATUS AND ADJUSTMENT METHOD OF THE SAME - Provided is a photoelectric converting device including: first photoreceptors each converting a received main beam to a current; second photoreceptors each converting a received first sub-beam to a current; and third photoreceptors each converting a received second sub-beam to a current; first current-voltage converting circuits each converting the current converted by a corresponding one of the first photoreceptors to a voltage; current amplifying circuits each amplifying or attenuating the current converted by a corresponding one of the second photoreceptors; switching circuits each supplying one of the current amplified or attenuated by a corresponding one of the current amplifying circuits and the current converted by the corresponding one of the second photoreceptors; and second current-voltage converting circuits each converting a sum of the current supplied by a corresponding one of the switching circuits and the current converted by a corresponding one of the third photoreceptors to a voltage. | 12-03-2009 |
20100165824 | INFORMATION CARRIER, AND SYSTEM FOR READING SUCH AN INFORMATION CARRIER - The invention relates to an information carrier comprising a layer (L) for storing data, said layer forming a light-guide having an internal face (IF) having placed thereon a matrix of indentations (ID | 07-01-2010 |
20100177625 | DYNAMICALLY CONFIGURABLE MULTIPLE WAVELENGTH PHOTODETECTOR ARRAY FOR OPTICAL STORAGE APPLICATIONS - A photodetector integrated circuit (PDIC) capable of being used with at least two different types of optical discs includes a photodetector (PD) array and a switch matrix. The PD array includes a center channel PD and a side channel PD electrically isolated from the center channel PD. The switch matrix, which includes a plurality of inputs and a plurality of outputs, can be selectively configured in a plurality of different switch configurations. The side channel PD includes a plurality of electrically isolated PD sections. Each electrically isolated PD section of the side channel PD is adapted to detect light and provide an electrical output signal, indicative of the light detected by the PD section, to a different one of the inputs of the switch matrix. The switch matrix is adapted to combine the electrical output signals provided by the electrically isolated PD sections of the side channel PD in a plurality of different manners, in dependence on which of the plurality of different switch configurations is selected. | 07-15-2010 |
20130223202 | OPTICAL PICKUP - In a photo-detector position adjustment/bonding process, it has been necessary for a worker to hold a dangling photo-detector and plate with a tool such as tweezers, and chuck the photo-detector and plate onto an adjustment jig. Because the chucking onto the adjustment jig is performed by a manual operation, productivity is low and it has been difficult to decrease the process standard time (ST). In order to substantially stabilize the standby position of the photo-detector, a pressing force is provided by the reaction force of a flexible substrate in the direction of an optical pickup, and the contacting surfaces of an optical pickup case and the plate are prevented from sliding and displaced from each other. | 08-29-2013 |
20150302884 | APPARATUS AND METHOD OF MULTI-BIT AND GRAY-SCALE HIGH DENSITY DATA STORAGE - A data storage apparatus and method of storing data are disclosed. An array of irradiation sources are provided for writing on an optically stimulated luminescence (OSL) material. The OSL material includes data storage pixels or spots. Each pixel or spot includes gray-scale levels with higher order bits and variable intensity. A light source stimulates luminescence on the OSL material. | 10-22-2015 |