Patent application number | Description | Published |
20100296532 | LASER DEVICE AND LASER DEVICE CONTROL DATA - A laser device includes a resonator having a gain region, a first wavelength selection portion having a periodical peak in wavelength characteristics and a second wavelength selection portion having a periodical peak in wavelength characteristics in a wavelength range smaller than a variable range of an oscillation wavelength at a period different from the first wavelength selection portion, the oscillation wavelength selected with a single direction changing of a refractive index of the second wavelength selection portion changing in a single direction; a storing portion storing a setting value of a refractive index of the second wavelength selection portion for selecting an oscillation wavelength according to an oscillation wavelength to be attained within an extent from a maximum value to a minimum value of the refractive index over the plurality of the ranges; and a controller giving the setting value to the resonator. | 11-25-2010 |
20110200062 | METHOD OF CONTROLLING WAVELENGTH-TUNABLE LASER - A method of controlling a wavelength-tunable laser selecting an oscillation wavelength with a combination of a plurality of wavelength selection portions of which wavelength peak is different from each other, comprising: a first step of confirming a control direction of the wavelength selection portion in a case where a setting value is changed from a first setting value for achieving the first wavelength to a second setting value for achieving the second wavelength; a second step of setting a setting value that is shifted from the second setting value in a direction that is opposite of a pre-determined changing direction on the wavelength selection portion as a prepared setting value, when the control direction confirmed in the first step is opposite to the pre-determined changing direction; and a third step of changing the prepared setting value set in the second step to the second setting value. | 08-18-2011 |
20110216351 | IMAGE FORMING APPARATUS AND COMPUTER READABLE MEDIUM STORING PROGRAM - An image forming apparatus includes: a print command receiving unit that receives print command information indicating a print command; an authentication determination unit that determines whether or not the print command information received by the print command receiving unit includes authentication requirement information indicating that authentication is required upon print processing based on the print command; a determination unit that, when the authentication determination unit has determined that the print command information includes the authentication requirement information, determines whether or not an originator of the print command information and a user who performs the print processing based on the print command information are different; and a notification unit that, when the determination unit has determined that the originator of the print command information and the user who performs the print processing are different, notifies the user who performs the print processing of presence of the print command information. | 09-08-2011 |
20110228309 | PRINT JOB INFORMATION MANAGING DEVICE, PRINT JOB INFORMATION MANAGING METHOD, AND RECORDING MEDIUM - A print job information managing device of the present invention has: an authentication request instruction adding section that adds, to a print job, an authentication request instruction that expresses whether or not authentication is needed at a time of printing; a transmitting section that transmits the print job to a printer; and a notification section that, when the authentication request instruction has been added to the print job transmitted by the transmitting section, notifies a printing recipient that the print job has been transmitted. | 09-22-2011 |
20110228800 | METHOD FOR TUNING SEMICONDUCTOR LASER - A method for tuning a semiconductor laser including a plurality of wavelength selection portions, each of which has a periodic wavelength characteristic, including: controlling a value of a refractive index controlling means of the wavelength selection portions to achieve a desired output wavelength of the laser; and shifting the value when the value is equal to or excess of a predetermined value to a basal value side until achieving the desired output wavelength, the basal value being a value without applying refractive index variation by the refractive index controlling means, the predetermined value being a value for shifting one period of the periodic wavelength characteristic. | 09-22-2011 |
20120250066 | IMAGE FORMING SYSTEM, INFORMATION MANAGEMENT SERVER, AND COMPUTER READABLE MEDIUM STORING PROGRAM - An image forming system includes an information management unit, a determining unit, and at least one image forming unit. The information management unit stores and manages print information. The determining unit determines whether or not execution of a printing process regarding the print information is allowed. Each image forming unit prints and outputs print information acquired from the information management unit on a recording medium in accordance with a determination result of the determining unit. The determining unit includes a first authenticating unit and a second authenticating unit. The first authenticating unit performs authentication to determine whether or not execution of processing before printing and outputting the print information on a recording medium is allowed. The second authenticating unit performs authentication after completion of the authentication performed by the first authenticating unit to determine whether or not printing and output of the print information on the recording medium is allowed. | 10-04-2012 |
20120250067 | IMAGE FORMING SYSTEM AND COMPUTER READABLE MEDIUM STORING PROGRAM - An image forming system includes an information management unit, at least one image forming unit, an authenticating unit, a determining unit, an adding unit, a notifying unit, and a controller. The information management unit stores and manages print information. Each image forming unit forms an image on a recording medium in accordance with the print information. The authenticating unit authenticates a recipient of an output result of the image forming unit. The determining unit determines whether or not the print information requires authentication. The adding unit adds authentication information about the recipient to the print information when the print information requires authentication. The notifying unit notifies the recipient of information regarding the print information with the authentication information added. The controller controls the information management unit to transmit the print information to the image forming unit to form an image when the recipient has been successfully authenticated. | 10-04-2012 |
20140101148 | PREFERENCE-INFORMATION GATHERING SYSTEM, PREFERENCE INFORMATION GATHERING APPARATUS, PREFERENCE-INFORMATION GATHERING METHOD, AND PREFERENCE-INFORMATION GATHERING PROGRAM - A preference-information gathering system is capable of gathering information on every commodity and/or every service, which are each of interest to a user, as user's preference information. The preference-information gathering system includes a user portable terminal capable of storing a user identifier uniquely identifying the user, an information searching apparatus and a preference-information management apparatus for managing the information on preferences with the user. The information searching apparatus has a search-information inputting unit for requesting a user to enter search information to be used in a process to search for information desired by the user and a user-identifier acquisition unit for acquiring a user identifier. The information searching apparatus transmits information found in a search process requested by the user as the desired information on a commodity and/or a service and the user identifier to the preference-information management apparatus by associating the information and the identifier with each other. | 04-10-2014 |
Patent application number | Description | Published |
20100227350 | Method of Screening Substance Useful in Treating Disease With the Use of GPR40 and Phospholipase - The present invention relates to a screening method for determining whether a substance of interest is a substance which alters GPR40-mediated cell stimulating activities, comprising using a substance of interest, a biomembrane containing GPR40, or cells containing said biomembrane, and phospholipase or salts thereof. According to the present invention, substances involved in insulin secretion can be screened. In addition, according to the present invention, substance useful for the prevention or treatment of diabetes, diabetic complications and degenerative diseases, hyperglycemia, polyuria, ketonemia, acidosis, insulin resistance, impaired glucose tolerance, neurodegenerative diseases, insulinoma, cancers, hyperinsulinemia, hyperglyceridemia, fatty liver, hypoglycemia due to insulin hypersecretion, arteriosclerosis, hyperlipidemia, cerebral stroke, obesity, various diseases induced by diabetes or obesity, and the like. | 09-09-2010 |
20110183318 | METHOD FOR SCREENING OF SUBSTANCE EFFECTIVE ON DISEASE USING GPR120 AND PHOSPHOLIPASE - The present invention provides a screening method for determining whether a substance of interest is a substance which alters GPR120 mediated cell stimulating activities, comprising using a substance of interest, a biomembrane containing GPR120, or cells containing said biomembrane, and phospholipase or salts thereof. According to a screening method of the present invention, the method can screen substances such as CCK and GLP-1 which are involved in the secretion of hormones in gastrointestinal tracts. | 07-28-2011 |
Patent application number | Description | Published |
20080216399 | GREENHOUSE, METHOD FOR GROWING PLANTS USING THE SAME, AND LIGHT TRANSMISSIVE SUBSTRATE - There is provided a greenhouse wherein a light transmissive substrate that maintains or increases light transmittance at visible wavelengths and has an insulation effect is used to reduce the running costs considerably as well as increase the yield of plants. In the greenhouse according to the present invention, a light transmissive substrate that has a visible light transmittance of 86% or more and solar radiation transmittance of 78% or less is used as the material for covering the greenhouse. | 09-11-2008 |
20080304465 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - A wireless transceiver device employing the code select code division multiple access method includes an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside, and a code selector configured to select a code corresponding to the data subjected to correction coding. The wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code. | 12-11-2008 |
20100081874 | MEDICAL TREATMENT ENDOSCOPE - Provided is a medical treatment endoscope including: an endoscope main body which includes an elongated insertion portion having a lumen and an image capturing mechanism disposed in a distal end of the insertion portion; an arm which is able to be inserted into or extracted from the lumen and has a treatment tool lumen for allowing an endoscope treatment tool to be inserted therethrough; and a positioning mechanism which positions a part of the arm inserted through the lumen with respect to the endoscope main body. | 04-01-2010 |
20100118080 | APPARATUS AND METHOD FOR INK JET PRINTING - The present invention provides an ink jet printing apparatus and a method for controlling temperature for the ink jet printing apparatus wherein the temperature of a print head, which may lower during printing, is controlled before printing without using any sub-heater to allow a favorable ejection condition to be established without reducing the head temperature below a predetermined value. Thus, scan width information and dot count information are acquired before a carriage starts scanning to determine the heating temperature of the print head on the basis of the information. | 05-13-2010 |
20100223573 | INFORMATION PROCESSING APPARATUS, METHOD OF CONTROL FOR SAME, AND PROGRAM - An information processing apparatus is configured to execute a plurality of operations in parallel. A display unit displays a header identifying each operation in a plurality of operation on a display unit. A control unit switches a current operation based on selection of the header via an input unit and, when switching the current operation, controls display of suspension information to indicate a suspension state of a suspended operation on the header for the suspended operation in addition to the current operation. | 09-02-2010 |
20110188479 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - A wireless transceiver device employing the code select code division multiple access method includes an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside, and a code selector configured to select a code corresponding to the data subjected to correction coding. The wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code. | 08-04-2011 |
20140296631 | MEDICAL TREATMENT ENDOSCOPE WITH A POSITIONING MECHANISM - A medical treatment endoscope includes: an insertion portion which has a lumen formed along a longitudinal axis of the insertion portion and is configured to be inserted into a body cavity, a lateral opening portion which extends in a lateral surface of the insertion portion, from a distal end surface of the insertion portion to a proximal end side of the insertion portion, an elastic member which is provided in an inner wall of the lumen at a position separated from an edge of a proximal end of the insertion portion in a direction toward a distal end side of the insertion portion, and a tubular arm which includes a bendable bending part provided at a distal end side of the tubular arm. | 10-02-2014 |
20140336047 | OXYGEN ABSORBING AGENT - An oxygen absorbing agent has excellent oxygen absorbing properties and can absorb oxygen in an atmosphere, even under a moisture-free or substantially moisture-free atmosphere. The oxygen absorbing agent includes an alloy obtained by subjecting an alloy (X) including (A) at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon, to treatment with an alkali aqueous solution to elute and remove at least a part of the component (B) in the alloy (X), wherein the alloy (Y) has an X-ray diffraction profile satisfying a diffraction peak relationship. | 11-13-2014 |
20150191292 | PROCESS FOR PRODUCING OXYGEN ABSORBING AGENT - A process for producing an oxygen absorbing agent includes treating an alloy with an aqueous solution of an acid or an alkali, the alloy including at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon to elute and remove at least a part of the component; and subjecting the alloy obtained by removing at least a part of the component in the alloy to treatment with an aqueous solution of a salt of an inorganic acid or a salt of an organic acid that can form a salt with the transition metal as the component, to form a metal salt in at least a part of the surface of the alloy. | 07-09-2015 |
Patent application number | Description | Published |
20080268253 | Coating Liquid for Forming Transparent Coating Film and Base with Transparent Coating Film - A hard coat or a transparent film having excellent adhesion to a polycarbonate substrate is provided. The transparent film-forming coating liquid of the present invention comprises the following components (A) to (D): (A) an organosilicon compound and/or a hydrolyzate of the organosilicon compound, (B) metal oxide fine particles each of which comprises a metal oxide core particle and a coating layer composed of antimony oxide, (C) one or more curing agents (curing agent (A)) selected from the group consisting of a polythiol compound, an organic polycarboxylic acid and an acetylacetone metal complex, and (D) a curing agent (curing agent B) comprising a compound containing basic nitrogen. The metal oxide particles (B) have been surface-modified with an organosilicon compound or an amine compound. | 10-30-2008 |
20090029153 | PLASTIC LENS AND METHOD FOR PRODUCING PLASTIC LENS - Disclosed herein is a plastic lens which exhibits outstanding weather resistance and light resistance with a minimum of deteriorating effect on the organic antireflection thin film formed thereon. The plastic lens is composed of a plastic lens base material, a hard coating layer formed on the plastic lens base material, and an antireflection film formed on the hard coating layer, wherein the hard coating layer is one which is formed from a coating composition comprising inorganic oxide fine particles containing titanium oxide with a rutile-type crystallite and an organosilicon compound as a binder. | 01-29-2009 |
20090136746 | Composite Polymer, Thermosetting Coating Composition, and Molded Article - A composite polymer is obtained by reacting (a) an elastomer having a carboxyl group with (b) metal oxide fine particles each having an epoxy ring-containing group on the particle surface. A thermally cured product of the composite polymer is a material favorable for forming a primer layer which has not only high transparency but also excellent adhesion to a hard coat layer and is excellent also in scratch resistance, heat resistance, weathering resistance, dyeing property, impact resistance and the like. An article such as an optical article whose primer layer comprises the thermally cured product of the composite polymer has high transparency and is excellent also in heat resistance. | 05-28-2009 |
20100056664 | DENTAL FILLER, METHOD FOR PRODUCING THE SAME, AND DENTAL COMPOSITE MATERIAL - A dental filler having the optical and/or mechanical properties satisfying the requirements to a dental material, a method for producing the dental filler, and a dental composite material containing the dental filler. The dental filler comprises microparticles of amorphous inorganic oxide constituted by at least silica-based fine particles covered with a composite oxide comprising zirconium, silicon and oxygen. The dental composite material contains the dental filler and a hardenable resin selected from an acrylic resin, a methacrylic resin, an epoxy resin, a vinyl resin and a urethane resin. | 03-04-2010 |
20100118508 | LIGHTING DEVICE FOR IMAGE CAPTURING IN ELECTRONIC COMPONENT MOUNTING APPARATUS - To provide a lighting device for image capturing in an electronic component mounting apparatus that has small dimensions in the height direction and a small size in a plan view and thus can meet demands in a reduction in size. | 05-13-2010 |
Patent application number | Description | Published |
20090021238 | OPTICAL DEVICE AND METHOD OF CONTROLLING THE SAME - An optical device includes an optical element, a detector and a controller. The optical element has an optical waveguide. Refractive index of the optical waveguide is controlled by a heater. A temperature of the optical element is controlled by a temperature control device. The detector detects a current flowing in the heater and/or a voltage applied to the heater. The controller controls an electrical power provided to the heater so as to be kept constant according to the detection result of the detector. | 01-22-2009 |
20090022185 | METHOD OF CONTROLLING SEMICONDUCTOR LASER - A method of controlling a semiconductor laser having a wavelength selection portion, a refractive index of the wavelength selection portion being controllable with a heater including: a starting sequence including a first step for adjusting a heat value of the heater until the heat value of the heater reaches a given value; and a wavelength control sequence including a second step for correcting a wavelength of the semiconductor laser according to a detection result of an oscillation wavelength of the semiconductor laser after the starting sequence. | 01-22-2009 |
20090022186 | METHOD OF CONTROLLING SEMICONDUCTOR LASER - A method of controlling a semiconductor laser that has a plurality of wavelength selection portions having a different wavelength property from each other and is mounted on a temperature control device, including: a first step of correcting a temperature of the temperature control device according to a detected output wavelength of the semiconductor laser; and a second step of controlling at least one of the wavelength selection portions so that changing amount differentials between each wavelength property of the plurality of the wavelength selection portions is reduced, the changing amount differential being caused by correcting the temperature of the temperature control device. | 01-22-2009 |
20090168817 | TESTING METHOD OF WAVELENGTH-TUNABLE LASER, CONTROLLING METHOD OF WAVELENGTH-TUNABLE LASER AND LASER DEVICE - A testing method of a wavelength-tunable laser having a resonator including wavelength selection portions having wavelength property different from each other includes a first step of controlling the wavelength-tunable laser so as to oscillate at a given wavelength according to an initial setting value, a second step of tuning the wavelength property of the wavelength selection portions and detecting discontinuity point of gain-condition-changing of the wavelength-tunable laser, and a third step of obtaining a stable operating point of the wavelength selection portion according to a limiting point of an oscillation condition at the given wavelength, the limiting point being a point when the discontinuity point is detected. | 07-02-2009 |
20100034224 | TUNABLE LASER MODULE, TUNABLE LASER APPARATUS AND CONTROLLING METHOD FOR TUNABLE LASER - A tunable laser module includes a tunable laser section including a gain medium and a wavelength filter having a periodic characteristic which brings about a discontinuous variation of an oscillation wavelength, and a monitoring section adapted to output a monitoring signal which periodically varies in response to the oscillation wavelength of the tunable laser section. The monitoring section includes a monitoring wavelength filter having a periodic characteristic which defines the monitoring signal. The relationship between the period of the wavelength filter and the period of the monitoring wavelength filter is set such that the monitoring signal varies when the oscillation wavelength varies discontinuously. | 02-11-2010 |
Patent application number | Description | Published |
20090171150 | OBSERVATION UNIT DETACHABLE TYPE ENDOSCOPE AND ENDOSCOPE MAIN BODY - An endoscope main body of an endoscope includes a body cavity insert ion section, at least one operating arm section, a main body operating section, an arm section operating section, and an observation unit attachment/detachment mechanism. The insertion section includes a main body bending portion at the distal end portion of the endoscope main body. The operating arm section includes arm section bending portion connected to the distal end of the insertion section. The main body operating section includes a first operation mechanism provided on the proximal end side of the insertion section. The arm section operating section includes a second operation mechanism provided on the proximal end side of the insertion section. The observation unit attachment/detachment mechanism detachably attaches, to the insertion section, an observation unit provided in the insertion section and having a camera section and a signal transmission section which transmits video data. | 07-02-2009 |
20090171160 | ENDOSCOPE MAIN BODY AND ENDOSCOPE - An endoscope main body constituting an endoscope in a state in which an elongated detachable observation optical system is attached to the endoscope main body, and in a proximal end of an insertion section of the endoscope main body, a branch member is disposed. The branch member is provided so that a first extended section and a second extended section are branched from each other and thereby first and second operating sections are separately arranged. Furthermore, the branch member has an opening as an inlet which guides an imaging module in a distal end of the observation optical system to a hard portion of the insertion section. | 07-02-2009 |
20120004503 | TREATMENT ENDOSCOPE - A treatment endoscope includes that a body cavity insertion portion which includes a main body distal hard portion, and a main body curving portion provided to a proximal side of the main body distal hard portion, one or more treatment arm/arms projecting to a distal side from the main body distal hard portion, each of the treatment arm/arms including a curving mechanism, an operation portion provided to the proximal side of the body cavity insertion portion, and an observation section configured to image a field of view in a body cavity, the observation section including an imaging section provided within the main body distal hard portion. The treatment endoscope includes that an operation portion attaching/detaching mechanism configured to removably attach the operation portion to the body cavity insertion portion, and an observation section attaching/detaching mechanism configured to removably attach the observation section to the body cavity insertion portion. | 01-05-2012 |
20120016191 | COVER-ADAPTED TREATMENT ENDOSCOPE AND ENDOSCOPE COVER - An endoscope cover of a cover-adapted treatment includes a cover insertion portion main body, the cover insertion portion main body including a cover bending portion which is provided to a proximal side of a cover distal end portion and which is configured to be bent in response to a bending of a main body bending portion of an endoscope main body in an attached condition where the endoscope main body is inserted in an insertion passage. The endoscope cover includes a positioning section configured to determine an insertion position of the endoscope main body where the main body distal portion does not project from a distal end of the cover insertion portion main body in the attached condition, and one or more treatment arm/arms which projects/project from the distal end of the cover insertion portion main body toward a distal side. | 01-19-2012 |
Patent application number | Description | Published |
20130021399 | INK JET RECORDING APPARATUS - An inkjet recording apparatus includes a recording head, a cap, and a preliminary discharge unit. The recording head can discharge a plurality of types of ink. The cap caps a discharge port face of the recording head. The preliminary discharge unit causes the recording head to execute a preliminary discharge. The preliminary discharge unit changes a preliminary discharge operation according to a length of time during which the discharge port face is capped by the cap. | 01-24-2013 |
20130088537 | PRINTING APPARATUS AND PROCESSING METHOD THEREOF - A printing apparatus comprising, a printhead including an element array in which a plurality of printing elements are arrayed, scanning unit configured to reciprocally scan the printhead, driving unit configured to time-divisionally drive the printing elements, conveyance unit configured to convey a printing medium, and setting unit configured to set a driving order, wherein the conveyance unit performs a first conveyance operation of conveying the printing medium by a conveyance amount which is an integer multiple of a width of the group of the time-divisional driving, and a second conveyance operation of conveying the printing medium by a conveyance amount which is not an integer multiple of the width of the group, and the setting unit sets the driving order in the time-divisional driving for each scan based on the conveyance amount by the conveyance unit. | 04-11-2013 |
20130201238 | PRINTING APPARATUS AND PRINTING CONTROL METHOD THEREOF - This invention relates to suppression of density unevenness caused by occurrence of ink-landing position shifts between print scans. In an embodiment, upon printing by scanning an inkjet printhead including printing elements, the following control is executed. That is, in order to form an image by print scans of the printhead on a single print area on a print medium, image data are acquired in correspondence with the respective scans. Also, the printing elements are partitioned into plural groups each including continuously arrayed printing elements, and the printing elements in each of the plural groups are time-divisionally driven based on drive sequences. Then, the drive sequences upon time-divisional driving in respective scans are set to include elements having the same drive timings and those having different drive timings. | 08-08-2013 |
20130329235 | DATA PROCESSING APPARATUS AND PRINT DATA GENERATING METHOD - Textures in a printed image are reduced with a configuration that, provided that a matrix made up of a plurality of dot arrangement patterns is treated as a unit, binarizes image data is repeatedly applying such a matrix to the image data. Specifically, when a shift value K=k, a shift process calculates X+kY for the position (X, Y) of each cell in a 4×4 base matrix. The dot arrangement patterns are then shifted overall such that the cell where the value is k from among these values moves to the position (0, 0). The shift process is conducted while setting different shift values for every repeated use of the base matrix. As a result, regular textures are decreased in the case of using a base matrix made up of a gradation value Lv1 on a pixel area. | 12-12-2013 |
20150015640 | PRINTING APPARATUS AND PROCESSING METHOD THEREOF - A printing apparatus comprising, a printhead including an element array in which a plurality of printing elements are arrayed, scanning unit configured to reciprocally scan the printhead, driving unit configured to time-divisionally drive the printing elements, conveyance unit configured to convey a printing medium, and setting unit configured to set a driving order, wherein the conveyance unit performs a first conveyance operation of conveying the printing medium by a conveyance amount which is an integer multiple of a width of the group of the time-divisional driving, and a second conveyance operation of conveying the printing medium by a conveyance amount which is not an integer multiple of the width of the group, and the setting unit sets the driving order in the time-divisional driving for each scan based on the conveyance amount by the conveyance unit. | 01-15-2015 |
Patent application number | Description | Published |
20140036940 | METHOD OF CONTROLLING WAVELENGTH TUNABLE LASER, CONTROL DATA STRUCTURE OF WAVELENGTH TUNABLE LASER, AND WAVELENGTH TUNABLE LASER - A method of controlling a wavelength tunable laser to control an oscillation wavelength based on a difference between a detection result of a wavelength by a wavelength detecting unit and a target value, the method includes: acquiring a first drive condition of the wavelength tunable laser to make the wavelength tunable laser oscillate at a first wavelength from a memory; calculating a second drive condition to drive the wavelength tunable laser at a second wavelength by referring to the first drive condition and a wavelength difference between the first wavelength and the second wavelength, the second wavelength differing from the first wavelength; and driving the wavelength tunable laser based on the second drive condition calculated at the calculating of the second drive condition. | 02-06-2014 |
20140369369 | APPARATUS FOR OUTPUT LIGHT WITH WAVELENGTH TUNABLE FUNCTION AND METHOD TO DETERMINE OSCILLATION WAVELENGTH OF WAVELENGTH TUNABLE LASER DIODE - An apparatus for output light with a wavelength tunable function, includes: a semiconductor laser diode (LD) including regions to determine an oscillation wavelength, the regions providing respective diffraction gratings and electrodes to control refractive index of the regions; a temperature controller for mounting the LD thereon to control a temperature of the LD; and a controller configured to vary the refractive index of the regions by providing control signals to the electrodes and another control signal to the temperature controller for varying the temperature of the LD to coincide the oscillation wavelength with a target wavelength. | 12-18-2014 |
20150036705 | METHOD FOR CONTROLLING WAVELENGTH-TUNABLE LASER - The method for controlling a wavelength-tunable laser comprises a first step of acquiring a driving condition of the wavelength-tunable laser for laser oscillation at a first wavelength, and a second step of calculating according to the driving condition of the first wavelength and a wavelength difference between the first wavelength and a second wavelength different from the first wavelength a control value or target value of a wavelength characteristic of the second wavelength in the wavelength detection unit, so as to calculate a driving condition for driving the wavelength-tunable laser, the second step including a step of selecting according to the wavelength difference one of etalon slopes having respective gradients identical and opposite to a gradient of an etalon slope used for controlling the first wavelength. | 02-05-2015 |
20150063383 | METHOD FOR CONTROLLING TUNABLE WAVELENGTH LASER - A driving condition for causing the tunable wavelength laser to conduct laser oscillation at a first wavelength is acquired. a driving condition for causing the tunable wavelength laser to conduct laser oscillation at the second wavelength is calculated. The tunable wavelength laser is driven based on the driving condition of the second wavelength, feedback control that changes the driving condition of the tunable wavelength laser based on a difference between an output of the wavelength sensing unit and the target value is performed, and the tunable wavelength laser is caused to oscillate at the second wavelength. The driving condition of the tunable wavelength laser obtained by the feedback control when oscillation has occurred at the second wavelength is stored in the memory. Thereafter, the tunable wavelength laser is driven with reference to the stored driving condition of the tunable wavelength laser. | 03-05-2015 |
20150063384 | METHOD FOR CONTROLLING TUNABLE WAVELENGTH LASER - In the method for controlling a tunable wavelength laser, information designating an oscillation wavelength is inputted. A driving condition for causing laser oscillation at a first wavelength is acquired from a memory. A control value of wavelength characteristics of the etalon and a difference between the first wavelength and a second wavelength are referred to, and a control value of wavelength characteristics of the etalon for causing laser oscillation at the second wavelength is calculated. The control value of wavelength characteristics of the etalon are assigned to the tunable wavelength laser, and a wavelength is controlled so that a wavelength sensing result becomes a first target value. Information indicating a wavelength shift amount from the designated oscillation wavelength is inputted. The wavelength sensing result is calculated as a second target value. The wavelength is controlled so that the wavelength sensing result becomes the second target value. | 03-05-2015 |