Patent application number | Description | Published |
20100301725 | METAL LAMINATED BODY, LED-MOUNTED SUBSTRATE, AND WHITE FILM - The present invention provides a white film comprising a thermoplastic resin composition containing 25-100 parts by mass of an inorganic filler based on 100 parts by mass of a thermoplastic resin, wherein the average reflectance at a wavelength of 400-800 nm is 70% or more, the average linear expansion coefficient in the machine direction and the transverse direction is 35×10 | 12-02-2010 |
20110042124 | MULTILAYER WIRING SUBSTRATE HAVING CAVITY PORTION - The present invention provides a multilayer wiring substrate comprising: a plurality of wiring substrate laminated each other; and a cavity portion. In the multilayer wiring substrate, a wiring substrate | 02-24-2011 |
20120138990 | METAL SUBSTRATE AND LIGHT SOURCE DEVICE - The invention provides a metal substrate and a light source device ensuring that a semiconductor chip working as a light source can be firmly joined by using a metal joining material, such that heat generated in the mounted semiconductor chip can be efficiently dissipated through a metal plate. The metal substrate includes a heat dissipating metal plate made of a metal except for Au, an insulating resin-made white film stacked on a part of the heat dissipating metal plate, and a light source mounting surface-forming layer stacked on another part of the heat dissipating metal plate. The metal substrate is such that the light source mounting surface-forming layer is a metal layer directly contacting the heat dissipating metal plate, and the light source mounting surface is a surface of an Au layer which is the outermost layer of the light source mounting surface-forming layer. | 06-07-2012 |
Patent application number | Description | Published |
20080285303 | OPTICAL MODULE AND MANUFACTURING METHOD THEREOF - An optical module according to the present invention comprises an electric wiring substrate, a first optical element mounted on the electric wiring substrate so that a heat generation section of the first optical element is positioned relatively close to a substrate surface of the electric wiring substrate and a heat sink mounted on the same plane as the mounting plane of the first optical element on the electric wiring substrate, the heat sink being mounted on the electric wiring substrate so that an area of electric wiring on the electric wiring substrate overlaps the heat sink. This improves the efficiency of heat radiation of the optical module. | 11-20-2008 |
20110243504 | OPTICAL CONNECTOR AND METHOD OF CONNECTING FIBER ARRAY - An optical connector includes a fiber-support block configured to couple cores of a plurality of optical fibers, and a lens-support block including a contact surface provided with a plurality of openings, the contact surface contacted to a contact surface of the fiber-support block, the cores of the optical fibers projecting from the contact surface of the fiber-support block insertable into the respective openings, the lens-support block having pairs of collimate lenses and convex lenses in the respective openings, each of the collimate lenses and a corresponding one of the convex lenses being spaced apart from each other in an optical-axis direction, the collimate lenses being movable in the optical-axis direction and being pressed by elastically deformable members, respectively, in the optical-axis direction and toward the contact surface of the fiber-support block. | 10-06-2011 |
20120008656 | DEVICE FOR JUDGING STATE OF SEMICONDUCTOR LASER AND METHOD FOR JUDGING STATE OF SEMICONDUCTOR LASER - A device includes: a providing unit that provides a driving electric current to a semiconductor laser, the electric current being superimposed a first alternating current signal having a first frequency at a low side of an operational range of the semiconductor laser and a second alternating current signal having a second frequency at a high side of the operational range; a first filter that extracts a first component corresponding to the first frequency from a voltage to be applied to the semiconductor laser; a second filter that extracts a second component corresponding to the second frequency from the voltage to be applied to the semiconductor laser; and a judge circuit that judges a state of the semiconductor laser based on a first differential resistance obtained from the result of the extracting by the first filter and a second differential resistance obtained from the result of the extracting by the second filter. | 01-12-2012 |
20140056595 | OPTICAL TRANSMISSION SYSTEM, CONTROL SIGNAL TRANSMISSION METHOD, AND OPTICAL MODULE - An optical transmission system including a transmitting unit to transmit an optical main signal, a receiving unit to receive the optical main signal, and a transmission line through which the optical main signal is transmitted, the optical transmission system includes: an optical transmitter unit configured to be activated or inactivated based on a control signal so as to transmit the control signal, the optical transmitter being included in the transmitting; and an optical receiver configured to receive light with the activate state or the inactivate state of the optical transmitter the optical receiver being included in the receiving unit, wherein the receiving unit regenerates the control signal, based on a power of the received light. | 02-27-2014 |
20140269844 | APPARATUS FOR CORRECTING SIGNAL, TRANSMISSION APPARATUS, METHOD OF CORRECTING SIGNAL, AND TRANSMISSION SYSTEM - An apparatus for correcting a signal, includes a correction value calculator that determines a transmission distance of a transmission path through which a timing signal is propagated, the timing signal having a periodically changing frequency, and determines a deviation between a frequency of the timing signal and a frequency of received data, as a correction value, from the transmission distance; and a corrector that corrects the frequency of the timing signal by the correction value for synchronizing transmitted data with the timing signal. | 09-18-2014 |
20140369445 | DECISION CIRCUIT, RECEIVER DEVICE, AND PROCESSOR - A decision circuit includes: a first decision block to distinguish a first bit of bits using an amplitude of an analog signal as a discrimination point, the analog signal being an amplitude shift keyed signal; a superposition block to acquire an absolute value of a difference of the analog signal in respect to an amplitude center value of the analog signal by superposing divided analog signals; an inversion block to control inverting of the signal based on a first distinction result of the first decision block; a second decision block to distinguish a second bit of the bits based on an amplitude of an output signal from the inversion block and the discrimination point; and an output buffer to output the first distinction result and a second distinction result of the second decision block in synchronization with a clock. | 12-18-2014 |