Patent application number | Description | Published |
20080212999 | LIGHT-AMOUNT DETECTING DEVICE, LIGHT SOURCE DEVICE, OPTICAL SCANNING UNIT AND IMAGE FORMING APPARATUS - A light-amount detecting device includes: a light source which emits a light beam; a branching optical element which divides the light beam emitted from the light source into a first light beam traveling in a predetermined direction and a second light beam traveling in a direction different to the predetermined direction; a light-condensing element which condenses the second light beam; a light-receiving element having a light-receiving surface which receives the second light beam condensed by the light-condensing element; and a detector which detects a light-amount of the second light beam received by the light-receiving element, and at least one of a direction of reflected light of the second light beam reflected from the light-receiving surface of the light-receiving element and spread of the reflected light of the second light beam reflected from the light-receiving surface of the light-receiving element is adjusted to control a light-amount of the reflected light of the second light beam returning to the light source. | 09-04-2008 |
20080266633 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a light source configured to emit light beams, a deflector to deflect the light beams emitted from the light source, a first optical assembly which is positioned upon a light path of the light beams traveling from the light source to the deflector and which forms an image with the light beams emitted from the light source in a sub scanning direction in a vicinity of the deflector, and a second optical assembly to form the image upon a surface to be scanned with the light beams deflected by the deflector. A principal ray of two of the light beams incident to the first optical assembly, which are located at each respective terminus in the sub scanning direction, are set so as to advance so as either to remain mutually parallel to or converge with one another after passing through the first optical assembly. | 10-30-2008 |
20080267663 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device which scans a scanned surface by a plurality of light beams in a main-scanning direction includes a light source having a plurality of light-emitting portions which emit the light beams, the light-emitting portions being two-dimensionally arranged in a plane parallel to the main-scanning direction and a sub-scanning direction orthogonal to the main-scanning direction via arrangement intervals in the main-scanning direction and the sub-scanning direction, a deflector which scans the light beams in the main-scanning direction; and a scanning optical system which images the scanned light beams onto the scanned surface. | 10-30-2008 |
Patent application number | Description | Published |
20090231683 | PROCESSING METHOD FOR SUPPRESSING PHOTODARKENING IN Yb-DOPED OPTICAL FIBERS, PHOTODARKENING-SUPPRESSED Yb-DOPED OPTICAL FIBER, AND FIBER LASER - A processing method for suppressing photodarkening in an Yb-doped optical fiber, comprising: a first step of preparing the Yb-doped optical fiber by doping a core with Yb, and irradiating at least one of a gamma ray, a X-ray, or an electron beam onto the Yb-doped optical fiber with an energy greater than a light to be transmitted through the optical fiber when a laser is being oscillated; a second step of measuring a loss spectrum of an infrared region of the optical fiber after the first step, and selecting an optical fiber with the loss in a specific wavelength falling within a predetermined range; and a third step of treating the optical fiber selected in the second step in an atmosphere containing hydrogen to obtain an Yb-doped optical fiber with suppressed photodarkening. | 09-17-2009 |
20100061684 | OPTICAL COMMUNICATION MODULE, MANUFACTURING METHOD THEREFOR, AND OPTICAL TRANSCEIVER - A manufacturing method of an optical communication module for manufacturing the optical communication module, including the sequentially performed steps of: (1) mounting a light-emitting element and a light-receiving element on a side surface of a sub-mount substrate and mounting the sub-mount substrate on a printed circuit board such that the light-emitting and -receiving directions of the light-emitting element and light-receiving element are parallel to the printed circuit board; (2) aligning an optical waveguide; and (3) dropping resin solution on an area of the sub-mount substrate including an optical waveguide end and the light-emitting element or the light-receiving element, and curing the resin solution. According to the present invention, it is possible to provide an optical communication module which can be made thin, small and cheap. | 03-11-2010 |
20100077800 | METHOD FOR FABRICATING POROUS SILICAPREFORM AND POROUS SILICA PREFORM - A method for fabricating a porous silica preform includes the steps of supplying fuel gas for generating an oxyhydrogen flame to a glass synthesizing burner; supplying Gas A containing silicon and Gas B containing fluorine to the burner; synthesizing glass particles; and depositing the glass particles around a starting rod, in which when glass particles are deposited directly on the starting rod, a supply of Gas A and a supply of Gas B supplied to the burner are adjusted so that a ratio of the number of fluorine atoms to the number of silicon atoms in the gas supplied to the burner satisfies the following Formula (1): | 04-01-2010 |
20100079854 | RARE-EARTH DOPED CORE MULTI-CLAD FIBER, FIBER AMPLIFIER, AND FIBER LASER - A rare-earth doped core multi-clad fiber includes a core that includes a rare-earth element and a plurality of cladding layers that surround the core. An outermost cladding of the plurality of cladding layers is made of a polymer cladding, the plurality of cladding layers have a polygonal inner cladding, and a shape of a boundary between a second cladding from the outside and the outermost cladding does not have two-fold rotational symmetry. As a result, it is possible to provide a rare-earth doped core multi-clad fiber for an optical amplifier and a fiber laser that has low skew and is inexpensive. | 04-01-2010 |
20110026106 | YTTERBIUM-DOPED OPTICAL FIBER, FIBER LASER, AND FIBER AMPLIFIER - An ytterbium-doped optical fiber of the present invention includes: a core which contains ytterbium, aluminum, and phosphorus and does not contain germanium; and a cladding which surrounds this core. The ytterbium concentration in the core in terms of ytterbium oxide is 0.09 to 0.68 mole percent. The molar ratio between the phosphorus concentration in the core in terms of diphosphorus pentoxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 30. The molar ratio between the aluminum concentration in the core in terms of aluminum oxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 32. The molar ratio between the above aluminum concentration in terms of aluminum oxide and the above phosphorus concentration in terms of diphosphorus pentoxide is 1 to 2.5. | 02-03-2011 |
20110142083 | YTTERBIUM-DOPED OPTICAL FIBER, FIBER LASER AND FIBER AMPLIFIER - An ytterbium-doped optical fiber includes: a core which contains at least ytterbium, aluminum, and phosphorus; and a cladding which encircles the core, wherein an aluminum oxide equivalent concentration of the aluminum in the core is 0.2 mol % or more, a diphosphorus pentaoxide equivalent concentration of the phosphorus is higher than the aluminum oxide equivalent concentration, and the core either does not contain germanium or contains less than 1.1 mol % of germanium in a germanium dioxide equivalent concentration. | 06-16-2011 |
20110206341 | YTTERBIUM-DOPED OPTICAL FIBER - Provided is an ytterbium-doped optical fiber including a core containing at least ytterbium, aluminum and phosphorous and a clad surrounding the core, wherein a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core is equal to a molar concentration of aluminum oxide with respect to aluminum in the core, wherein a ratio of a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core to the molar concentration of ytterbium oxide with respect to ytterbium in the core is higher than or equal to 10 and lower than or equal to 30, and wherein a relative refractive index difference between the core and the clad is higher than or equal to 0.05% and lower than or equal to 0.30%. | 08-25-2011 |
20110305251 | MULTI-CLADDING OPTICAL FIBER, OPTICAL FIBER MODULE, FIBER LASER, AND FIBER AMPLIFIER - Provided is a multi-cladding optical fiber which includes: a core with an average refractive index n | 12-15-2011 |
20120014653 | MANUFACTURING METHOD FOR OPTICAL FIBER PREFORM AND OPTICAL FIBER - Provided is a manufacturing method for an optical fiber preform of which the core is doped with a rare earth element. The method includes: depositing glass particles within a silica tube by the modified chemical vapor deposition method, the glass particles mainly consisting of silicon dioxide; adding the rare earth element and aluminum to the glass particles within the silica tube by the solution doping method; heating the silica tube while flowing a phosphorous-containing gas into the silica tube to sinter the glass particles within the silica tube while adding the phosphorous; and heating and collapsing the silica tube to which the rare earth element, the aluminum, and the phosphorous are added. | 01-19-2012 |
20130081429 | METHOD OF MANUFACTURING OPTICAL FIBER BASE MATERIAL AND METHOD OF MANUFACTURING OPTICAL FIBER - Provided is a method of manufacturing an optical fiber base material by an inside mounting method, including: a step of rotating and heating a glass tube fixed at two positions and supplying a gas into a through-hole of the glass tube, wherein in the step, the glass tube is warped so that an axis between respective fixed portions of the glass tube has a shape in which a catenary curve is reversed in the vertical direction. | 04-04-2013 |
20130081430 | METHOD OF MANUFACTURING OPTICAL FIBER BASE MATERIAL AND METHOD OF MANUFACTURING OPTICAL FIBER - Provided is a method of manufacturing an optical fiber base material using a MCVD method, including: a step of heating a glass tube while rotating the glass tube and supplying a gas into a through-hole of the glass tube, wherein in at least a part of the step, the inside of the through-hole is pressurized so that an outer diameter of the glass tube increases. | 04-04-2013 |
20150318659 | AMPLIFYING OPTICAL FIBER AND OPTICAL AMPLIFIER - A plurality of cores | 11-05-2015 |
Patent application number | Description | Published |
20090040357 | INFORMATION DISPLAY DEVICE - The present invention provides an information display device including an imaging unit that executes an imaging process to image a subject to output an imaging signal; a monitor capable of displaying an image of the subject based on the imaging signal; a switching part located near the monitor; a first display controller for displaying, in a menu on the monitor, each of a first group of items consisting of a plurality of items associated with the imaging process, whereby first setting data can be set; and a second display controller for displaying, in a menu on the monitor, each of a second group of items associated with a plurality of particular items in the first group and having fewer items than the first group, whereby second setting data can be set, wherein switching between the first and second display controllers is performed by operating the switching part. | 02-12-2009 |
20090041355 | ELECTRONIC CAMERA AND OBJECT SCENE IMAGE REPRODUCING APPARATUS - An electronic camera is provided with: an imager, having an imaging surface for capturing an object scene, for generating an object scene image; a designator for designating a specific position within the object scene image generated by the imager; a recorder for recording, together with position information of the specific position designated by the designator, the object scene image generated by the imager; and a reproducer for reproducing the object scene image recorded by the recorder, using the position information recorded by the recorder. | 02-12-2009 |
20090044151 | INFORMATION DISPLAY DEVICE - An information display device includes a monitor, an operator, a display processor for displaying, on the monitor, identification information of item groups and items in the lower hierarchy of an item group, an item group selector for selecting one item group in response to an item group selecting operation on the operator, a display controller for making the display processor display, on the monitor, items in the lower hierarchy of the one item group selected by the item group selector, a first item selector for selecting an item from items currently displayed on the monitor in response to a first item selecting operation on the operator, and a second item selector for making the display processor sequentially display, on the monitor, items in the lower hierarchy of the item groups in response to a second item selecting operation on the operator, and for selecting an item from the displayed items. | 02-12-2009 |
20110135272 | PORTABLE ELECTRONIC APPARATUS EQUIPPED WITH RECORDING FUNCTION - A portable electronic apparatus according to the present invention includes a main body with a front part on which a shooting lens is provided, wherein a moving image shooting button and a still image shooting button are provided at a rear part of the main body. A moving image shooting button and a still image shooting button are provided independent from the two aforementioned recording buttons on an upper face of the main body. The moving image shooting button and the still image shooting button provided at the rear part of the main body can be operated independently from the moving image shooting button and the still image shooting button provided on the upper face of the main body. | 06-09-2011 |
20120008035 | INFORMATION DISPLAY DEVICE - An information display device including an imaging unit that executes an imaging process to image a subject to output an imaging signal; a monitor capable of displaying an image of the subject based on the imaging signal; a switching part located near the monitor; a first display controller for displaying, in a menu on the monitor, each of a first group of items consisting of items associated with the imaging process, whereby first setting data can be set; and a second display controller for displaying, in a menu on the monitor, each of a second group of items associated with particular items in the first group and having fewer items than the first group, whereby second setting data can be set, in which switching between the first and second display controllers is performed by operating the switching part. | 01-12-2012 |
20120133798 | ELECTRONIC CAMERA AND OBJECT SCENE IMAGE REPRODUCING APPARATUS - An electronic camera is provided with: an imager, having an imaging surface for capturing an object scene, for generating an object scene image; a designator for designating a specific position within the object scene image generated by the imager; a recorder for recording, together with position information of the specific position designated by the designator, the object scene image generated by the imager; and a reproducer for reproducing the object scene image recorded by the recorder, using the position information recorded by the recorder. | 05-31-2012 |
Patent application number | Description | Published |
20100204377 | FLAME RETARDANT AGENT FOR THERMOPLASTIC RESIN AND FLAME RETARDANT RESIN COMPOSITION - A flame retardant agent for a thermoplastic resin, which enables the thermoplastic resin containing the flame retardant agent to keep its viscous property, to be made into a fiber readily, and to exhibit flame retardant effect even when ammonium dihydrogen phosphate is contained in the flame retardant agent as a non-halogen flame retardant component. Also disclosed is a flame retardant resin composition containing the flame retardant agent. Specifically, the flame retardant agent for a thermoplastic resin comprises ammonium dihyrogen phosphate, potassium hydroxide, glycerin and urea, wherein potassium hydroxide is contained in an amount of 10 to 70 parts by weight, glycerin is contained in an amount of 0.1 to 4.0 parts by weight, and urea is contained in an amount of 1 to 9 parts by weight relative to 100 parts by weight of ammonium dihydrogen phosphate. | 08-12-2010 |
20120108716 | FLAME RETARDANT AGENT FOR THERMOPLASTIC RESIN AND FLAME RETARDANT RESIN COMPOSITION - A flame retardant agent for a thermoplastic resin, which enables the thermoplastic resin containing the flame retardant agent to keep its viscous property, to be made into a fiber readily, and to exhibit flame retardant effect even when ammonium dihydrogen phosphate is contained in the flame retardant agent as a non-halogen flame retardant component. Also disclosed is a flame retardant resin composition containing the flame retardant agent. Specifically, the flame retardant agent for a thermoplastic resin comprises ammonium dihydrogen phosphate, potassium hydroxide, glycerin and urea, wherein the potassium hydroxide is contained in an amount of 10 to 70 parts by weight, glycerin is contained in an amount of 0.1 to 4.0 parts by weight, and urea is contained in an amount of 1 to 9 parts by weight relative to 100 parts by weight of ammonium dihydrogen phosphate. | 05-03-2012 |