Patent application number | Description | Published |
20090237811 | Objective lens system for endoscope - An objective lens system for endoscope comprising at least a first negative lens element, a second positive lens element, an aperture stop, and a cemented lens component consisting of a third negative lens element and a fourth positive lens element, and being configured so as to satisfy the conditions (2), (5) and (4) or the conditions (2), (3) and (4) which are mentioned below, whereby the lens system corrects lateral chromatic aberration and longitudinal chromatic aberration with a good balance, favorably corrects aberrations such as chromatic aberration and has a compact composition or a short total length. | 09-24-2009 |
20100143965 | METHOD FOR PRODUCTION OF ANTIMUTAGENIC SUBSTANCE USING LACTIC ACID BACTERIUM - Disclosed is a method for producing an antimutagenic substance by using a lactic acid bacterium, which can produce the antimutagenic substance in a large quantity in an extremely simple manner and is economically advantageous; particularly a method for producing an antimutagenic substance effective for a carcinogenic substance, particularly a heterocyclic amine (HCA) which is a carcinogenic substance derived from a food, by using a lactic acid bacterium. Specifically disclosed is a method for producing an antimutagenic substance by using a lactic acid bacterium, which is characterized by suspending the lactic acid bacterium in a poorly nutrient or nutrient-free medium and leaving the lactic acid bacterium in the medium. Preferably, the poorly nutrient or nutrient-free medium is selected from the group consisting of physiological saline, a phosphate-buffered saline without a calcium or magnesium salt (PBS (−)), a citrate buffer, a distilled water, an ion-exchanged water, a natural water, a well water, a tap water, a mineral-added water, a vitamin-added water, an ion supply beverage for an athlete and the like. More preferably, the lactic acid bacterium is | 06-10-2010 |
20120099234 | DRIVING CIRCUIT AND SEMICONDUCTOR DEVICE WITH THE DRIVING CIRCUIT - A driving circuit is placed on an IC chip, and which drives a semiconductor switching element. The driving circuit includes: a power supply circuit for receiving a first voltage supplied from a single power supply provided outside the IC chip, generating a second voltage based on the first voltage, and applying the second voltage to a reference terminal of the semiconductor switching element; and a driving part for driving the semiconductor switching element by applying the first voltage or stopping application of the first voltage to a control terminal of the semiconductor switching element in response to an input signal given from outside the IC chip. | 04-26-2012 |
20120224288 | POWER MODULE - A power module includes a current sensing circuit in which a transistor includes an emitter connected to a sense emitter of a current sense element of an IGBT and a base connected to ground, a current sensing resistor including one end thereof connected to a collector of the transistor and the other end thereof connected to a common connection portion. The power module detects, as a current sensing voltage, a potential difference generated by the current sensing resistor based on the common connection portion as a reference, compares the current sensing voltage with a predetermined threshold voltage, and determines whether or not an overcurrent flows through the IGBT according to a magnitude relation therebetween. | 09-06-2012 |
20130161644 | SEMICONDUCTOR MODULE - Provided is a semiconductor module having high inrush-current tolerance. A semiconductor module includes a switching element formed of a wide bandgap semiconductor, and a free wheel diode connected in antiparallel with the switching element, wherein the free wheel diode is made of silicon and has negative temperature characteristics. | 06-27-2013 |
20130194667 | Optical System for Rigid Scope and Rigid Endoscope - By suitably correcting a secondary spectrum, a clear, bright optical image is obtained. Provided is a rigid-scope optical system including: an objective optical system; and at least one relay optical systems that are formed of positive front groups, middle groups, and back groups in this order from an entrance side and that reimage an optical image imaged at imaging planes at the entrance side onto imaging planes at an exit side, wherein axial chromatic aberration between two wavelengths is corrected by an optical system other than the diffractive optical element, and axial chromatic aberration between the two wavelengths and another wavelength is corrected by the diffractive optical element. | 08-01-2013 |
20130214748 | POWER DEVICE CONTROL CIRCUIT AND POWER DEVICE CIRCUIT - A power device control circuit enters a gate driving signal into a gate terminal of a power device. The power device control circuit includes: a control signal input circuit that receives a power device control signal for control of the power device; a driving system control circuit connected to the control signal input circuit; a driving circuit with a plurality of driving systems, the driving circuit driving the power device in response to a driving circuit control signal received from the driving system control circuit; and a timer circuit that makes switching between the driving systems in response to the driving circuit control signal after elapse of a given period of time from receipt of a predetermined signal, specifically the power device control signal, thereby changing the driving power of the driving system control circuit to drive the power device. | 08-22-2013 |
20130314834 | SEMICONDUCTOR DRIVING CIRCUIT AND SEMICONDUCTOR DEVICE - A low power consumption semiconductor driving circuit is provided which applies positive and negative bias signals to a semiconductor switching element by using a single power source to perform the switching of the semiconductor switching element. The semiconductor driving circuit is a semiconductor driving circuit for driving the semiconductor switching element. The semiconductor driving circuit includes an internal power source circuit for generating a second voltage from a first voltage supplied from an external power source, and a driver for applying the first voltage or the second voltage between the gate and emitter of the semiconductor switching element in accordance with an input signal inputted from outside to switch on and off the semiconductor switching element. The internal power source circuit is configured to operate in accordance with the input signal. | 11-28-2013 |