Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
Hideki Sakai
Hideki Sakai, Utsunomiya-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20080316613 | EXTENDER LENS APPARATUS AND OPTICAL APPARATUS - The extender lens apparatus is detachably attached to an image-forming optical system including a first main lens unit disposed closest to an object and a second main lens unit disposed between the first main lens unit and an image plane. The apparatus includes a first extender lens unit to be inserted in a space closer to the first main lens unit than the second main lens unit, and a second extender lens unit to be inserted in a space closer to the image plane than the second main lens unit. The first extender lens unit has a magnification increasing effect. The apparatus is capable of varying a magnification of the image-forming optical system while maintaining good optical performance without greatly increasing the entire length of the image-forming optical system. | 12-25-2008 |
| 20090296230 | ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME - Provided is a zoom lens including in order from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; and a fourth lens unit having a positive refractive power, each of the first lens unit, the second lens unit, the third lens unit, and fourth lens unit moving to perform zooming, in which M | 12-03-2009 |
| 20110007405 | ZOOM LENS AND IMAGE PICKUP APPARATUS USING THE SAME - A zoom lens includes a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. The first lens unit, the second lens unit, and the third lens unit are arranged in order from an object side to an image side. Distances between the lens units change during zooming. The first lens unit consists of two lenses. Radii of curvature of a lens surface closest to the object side and a lens surface closest to the image side in the first lens unit, a focal length of the first lens unit, and a focal length of the entire zoom lens at a telephoto end are set appropriately. | 01-13-2011 |
| 20110026134 | ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME - A zoom lens includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a rear group including at least one lens unit. The first lens unit, the second lens unit, the third lens unit, and the rear group are arranged in order from an object side to an image side. The second and third lens units move for zooming. Imaging magnifications of the second lens unit at a wide angle end and a telephoto end, imaging magnifications of the third lens unit at the wide angle end and the telephoto end, a moving amount of the third lens unit along an optical axis during zooming from the wide angle end to the telephoto end, and a total lens length at the telephoto end are set based on predetermined conditions. | 02-03-2011 |
Hideki Sakai, Susono-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100211268 | DRIVER STATE ESTIMATION DEVICE - A driver state estimation device | 08-19-2010 |
Hideki Sakai, Shizuoka-Ken JP
| Patent application number | Description | Published |
|---|---|---|
| 20100161178 | VEHICULAR STEERING CONTROL DEVICE - A vehicle steering control apparatus ( | 06-24-2010 |
Hideki Sakai, Chiba JP
| Patent application number | Description | Published |
|---|---|---|
| 20090090270 | W/O emulsion ink for inkjet - A water-in-oil (W/O) emulsion ink which is suitable for use in inkjet printing and is low in viscosity and superior in storage stability is provided. The ink comprises an oil phase and a water phase emulsified in the oil phase using a nonionic surfactant, in which the water phase contains a salt of at least one metal selected from potassium or calcium. The metal salt is preferably a calcium salt, and particular preferably calcium chloride. The nonionic surfactant is preferably a polyglycerin fatty acid ester, and particularly preferably an esterification product of a polyglycerin and a hydroxy fatty acid. Preferably, the ink comprises 40-99 mass % of the oil phase and 60-1 mass % of the water phase, and contains a polyglycerin fatty acid ester in an amount of 0.5-40 mass % based on the total of the ink. | 04-09-2009 |
| 20100113621 | WATER IN OIL (W/O) EMULSION FORMED BY USING REVERSE VESICLE - A water-in-oil (W/O) emulsion which is stable even with a high water content is provided. The water-in-oil (W/O) emulsion is obtained by a three-phase emulsification using a reverse vesicle of an amphiphilic compound as an emulsifier. As the amphiphilic compound, a sucrose fatty acid ester is preferable, and a sucrose fatty acid ester with an HLB value of 6-12 is more preferable. The reverse vesicle can be prepared by mixing an amphiphilic compound with a non-polar solvent. The water-in-oil (W/O) emulsion can be formed by using the prepared mixture containing the reverse vesicle as an oil phase and adding water thereto for emulsification. As the non-polar solvent, an alicyclic hydrocarbon solvent such as cyclohexane is preferable. The reverse vesicle preferably has a particle diameter of not more than 1 μm. | 05-06-2010 |
Hideki Sakai, Chiba-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100054837 | Thermal printer - In order to provide a thermal printer capable of restraining automatically-continued rotation of roll paper after stop of rotation of a platen roller without damaging the roll paper, and of smoothly performing an initial operation of the roll paper, the thermal printer is characterized in that a roll paper holding mechanism ( | 03-04-2010 |
| 20100054839 | Thermal printer - In order to provide a thermal printer capable of sorting recording sheets with different print patterns without providing a complex mechanism to enable a user to easily receive a discharged sheet, On the downstream side of a print unit ( | 03-04-2010 |
Hideki Sakai, Chigasaki-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100028253 | TITANIUM DIOXIDE POWDER AND METHOD FOR PRODUCTION THEREOF - A titanium dioxide powder which has a rutile content of 80% or more and a BET surface area of 30 m | 02-04-2010 |
Hideki Sakai, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20110132630 | SCREW FASTENING DEVICE AND TORQUE SENSOR - A screw fastening device having a compact clutch that is directly connected to an output side of a DC motor. The output of the DC motor can be suppressed so that the DC motor and the clutch can be made compact. Accordingly, the device main body is more compact and lighter. | 06-09-2011 |
| 20110136022 | FUEL CELL, METHOD FOR PRODUCING FUEL CELL, ELECTRONIC APPARATUS, ENZYME-IMMOBILIZED ELECTRODE, BIOSENSOR, ENERGY-CONVERSION ELEMENT, CELLS, ORGANELLES, AND BACTERIA - There are provided a fuel cell and a production method therefor in which one or more types of enzymes or further coenzymes are enclosed in a micro space so that electrons can be efficiently extracted from a fuel such as glucose or the like by an enzyme reaction using the micro space as a reaction field, thereby producing electric energy, and in which the enzyme or further the coenzyme can be easily immobilized on an electrode. | 06-09-2011 |