Patent application number | Description | Published |
20120082178 | Vertical cavity surface emitting laser and method for manufacturing the same - A vertical cavity surface emitting laser capable of high-speed modulation and stabilized control of polarization direction of the laser light is provided, including a resonator which is formed by stacking a semiconductor substrate, a lower mirror layer formed on the upper side of the semiconductor substrate, an active layer formed on the upper side of the lower mirror layer, and an upper mirror layer including an oxidized layer formed on the upper side of the active layer, and a portion of which is formed in a mesa shape from a predetermined position to the upper surface in a height direction; an insulation layer covering the side surface of the mesa-shaped portion of the resonator, and the upper surface of the non-mesa-shaped portion of the resonator; and electrodes being wired on the upper surface of the upper mirror layer and on the lower surface of the semiconductor substrate, respectively. Further, a portion of the insulation layer formed on the side surface of the mesa-shaped portion of the resonator is formed to be uniformly thicker than another portion along the height direction of the mesa-shaped portion. | 04-05-2012 |
20120139419 | OPTICAL TRANSMISSION MODULE AND ITS TEMPERATURE ADJUSTMENT METHOD - An optical transmission module includes a light source element for emitting a predetermined light signal transmitted through an optical fiber, the light source element having lower characteristics in a low-temperature state than those in a high-temperature state, a driver circuit for driving the light source element, and a heat transfer member connected to each of the light source element and the driver circuit to transfer heat between the light source element and the driver circuit. The optical transmission module with such configuration can stably operate in a wide temperature range while achieving power saving and cost reduction. | 06-07-2012 |
20120147914 | Optical module - There are provided an optical module including a semiconductor laser including a P-side electrode and an N-side electrode, and a semiconductor laser driver circuit that drives the semiconductor laser so as to output an optical signal from the semiconductor laser according to a pattern of a differentially transmitted digital electric signal, and the semiconductor laser driver circuit includes a positive-side terminal and a negative-side terminal for differentially transmitted non-inverted data, and a positive-side terminal and a negative-side terminal for differentially transmitted inverted data, and one terminal for the non-inverted data is electrically connected to one electrode of the semiconductor laser, and the other terminal for the non-inverted data, one terminal for the inverted data and the other terminal for the inverted data each are connected to the other electrode of the semiconductor laser. | 06-14-2012 |
20120148190 | Optical module and optical transmission device using the same - There is provided an optical waveguide device including a light-emitting element having a light-emitting part for emitting a laser beam and a light-receiving element having a light-receiving part for receiving a laser beam, the elements being arranged on a mounting substrate in parallel with each other; and a first lens for optically coupling the laser beam emitted from the light-emitting part to a first optical waveguide core and a second lens for optically coupling the laser beam conducted through a second optical waveguide core to the light-receiving part, the lenses being arranged in parallel with each other, and in the optical waveguide device. The light-emitting element is a surface light-emitting semiconductor laser having a transparent semiconductor substrate laminated with an active layer as the light-emitting part, the surface light-emitting semiconductor laser emitting the laser beam from the active layer through the transparent semiconductor substrate. In the case where the surface light-emitting semiconductor laser and the light-receiving element are placed on a flat surface, when the active layer and the light-receiving part differ from each other in height with respect the flat surface, the optical waveguide device is configured so that the active layer is located at a focus position of the first lens and the light-receiving part is located at a focus position of the second lens. | 06-14-2012 |
20140185638 | OPTICAL MODULE - There are provided an optical module including a semiconductor laser including a P-side electrode and an N-side electrode, and a semiconductor laser driver circuit that drives the semiconductor laser so as to output an optical signal from the semiconductor laser according to a pattern of a differentially transmitted digital electric signal, and the semiconductor laser driver circuit includes a positive-side terminal and a negative-side terminal for differentially transmitted non-inverted data, and a positive-side terminal and a negative-side terminal for differentially transmitted inverted data, and one terminal for the non-inverted data is electrically connected to one electrode of the semiconductor laser, and the other terminal for the non-inverted data, one terminal for the inverted data and the other terminal for the inverted data each are connected to the other electrode of the semiconductor laser. | 07-03-2014 |
20140294030 | MULTIMODE VERTICAL CAVITY SURFACE EMITTING LASER HAVING NARROW LASER LIGHT EMITTING ANGLE - The protective film that covers the top distributed Bragg reflecting mirror has a central region and a peripheral region. The central region has a protrusion that projects relative to the peripheral region in a direction in which the laser light is emitted. The VCSEL satisfies relations below: | 10-02-2014 |
Patent application number | Description | Published |
20080314273 | Bank formed substrate and color pattern formed substrate - A color pattern formed substrate comprising a transparent substrate; a bank having an ink-repellent property on the transparent substrate; and colored layers resulted from color inks that are formed in the openings of the bank is disclosed. A surface layer portion of the bank has a better ink-repellent property than a lower layer portion thereof. The contact angle between the surface layer portion and a color ink is 30 degrees or greater. | 12-25-2008 |
20090274839 | INK JET INK, INK JET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT AND INK JET RECORDING APPARATUS - An ink jet ink including at least a compound represented by the following general formula (I) and organic solvents. When the organic solvents are classified by M | 11-05-2009 |
20110057994 | LIQUID COMPOSITION, SET, LIQUID CARTRIDGE, INKJET RECORDING METHOD, AND INKJET RECORDING APPARATUS - A liquid composition used in combination with an ink containing a coloring material is ejected by the action of thermal energy from a recording head including a heating resistor having a protecting layer that is to come into contact with the liquid composition and that contains at least one of a metal and a metal oxide. The liquid composition contains at least either an organic compound having a carboxy group and an amino group or an amine oxide compound, an organic acid having a carboxy group, and water. | 03-10-2011 |
20110310162 | INK JET RECORDING METHOD AND INK JET RECORDING APPARATUS - An object of the present invention is to provide an ink jet recording method which gives an ink excellent anti-sticking properties and can suppress the occurrence of undertrapping when recording surfaces of recording media which each have an ink-receiving layer are overlapped with each other, and to provide an ink jet recording apparatus. The ink jet recording method of forming an image on the recording medium having the ink-receiving layer by ejecting an ink from an ink jet recording head, the method including performing at least one of drying the recording medium which has the image formed thereon and humidifying a gap between the recording head and the recording medium, wherein the ink to be used for forming the image is an ink which contains water, a water-soluble organic solvent and a specific compound. | 12-22-2011 |
20110310164 | INK JET RECORDING METHOD AND INK JET RECORDING APPARATUS - An ink jet recording method includes an image formation step of forming an image on a recording medium having an ink-receiving layer by ejecting an ink from an ink jet recording head and a humidification step of humidifying a gap between the recording head and the recording medium, in which in the image formation step, at least a cyan ink containing a specific dye and a magenta ink containing a specific dye are used. | 12-22-2011 |
20110310202 | INK JET RECORDING METHOD AND INK JET RECORDING APPARATUS - An ink jet recording method includes an image formation step of forming an image on a recording medium having an ink-receiving layer by ejecting an ink from an ink jet recording head and a humidification step of humidifying a gap between the recording head and the recording medium, in which in the image formation step, an ink containing a specified dye represented by general formula (I) and a water-soluble organic compound having an inorganic-organic balance value of 1.4 or more to 2.7 or less is used. | 12-22-2011 |
20130335490 | INK, INK CARTRIDGE AND INK JET RECORDING METHOD - Provided is an ink capable of recording an image that is excellent in ozone resistance, hardly causes blurring or color change even in a high-humidity environment, and is excellent in humidity resistance. The ink includes a coloring material and a lithium ion. The coloring material includes a compound represented by the following general formula (I) and a content of the lithium ion in the ink is 3.5 times or more in terms of molar ratio with respect to a content of the compound represented by the general formula (I). | 12-19-2013 |