Patents by Inventor Tetsuya Iwasaki
Tetsuya Iwasaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8730600Abstract: A lens barrel includes a plurality of lens groups including a retractable lens group, a plurality of lens retaining frames to respectively retain the plurality of lens groups, a movable lens barrel to retain the plurality of lens retaining frames therein, and a lens retaining frame driving device to drive the lens retaining frames via the movable lens barrel. The lens retaining frames, the movable lens barrel and the lens retaining frame driving device move the plurality of lens groups between a collapsed state and a photographing state. The retractable lens retaining frame is movable between a position on a photographing axis and a position inside a housing located outside an inside diameter position of the movable lens barrel in the collapsed state by moving in a direction inclined relative to the photographing axis and moving in a direction orthogonal to the photographing axis.Type: GrantFiled: June 6, 2011Date of Patent: May 20, 2014Assignee: Ricoh Company, Ltd.Inventors: Tetsuya Iwasaki, Terunori Koyama
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Patent number: 8606446Abstract: A control system of a hybrid vehicle, includes: an engine; a motor capable of driving the engine; an oil pump for supplying a lubricant oil to a lubrication requiring portion of the engine; and an engine lubrication controller configured to make the following operations in a case that a stop state of the engine continues for more than or equal to a certain period: when a vehicle stop condition that a driver has no intention of travel is established, supplying, by the oil pump, the lubricant oil to the lubrication requiring portion of the engine, and rotating the engine by the motor without igniting the engine, thereby implementing an engine lubrication control.Type: GrantFiled: February 24, 2011Date of Patent: December 10, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Takao Ito, Yoshiyuki Ootake, Masaki Koga, Tetsuya Iwasaki, Takashi Ogino, Yasuhiro Konishi, Tomoyuki Koike
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Patent number: 8483555Abstract: A lens barrel that reinforces a connecting part between a movable lens barrel and a fixed barrel, without requiring a new drive source, is disclosed. The lens barrel includes: a rotary barrel fitted in a fixed barrel; a cam mechanism for connecting the rotary barrel and the fixed barrel; and a ring member. The fixed barrel includes an engagement section and a rotary drive mechanism for revolving the ring member. The rotary drive mechanism locates the ring member to an engagement-enabling position when a connection by the cam mechanism reaches a predetermined position, directing the connection from a first end to a second end of an idle revolving area, the first end continuing to an advancement/retreat movement area; and to a release position, when the connection by the cam mechanism is located at the first end of the idle revolving area.Type: GrantFiled: October 14, 2011Date of Patent: July 9, 2013Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki
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Publication number: 20130088791Abstract: A lens barrel includes a plurality of lens groups including a retractable lens group, a plurality of lens retaining frames to respectively retain the plurality of lens groups, a movable lens barrel to retain the plurality of lens retaining frames therein, and a lens retaining frame driving device to drive the lens retaining frames via the movable lens barrel. The lens retaining frames, the movable lens barrel and the lens retaining frame driving device move the plurality of lens groups between a collapsed state and a photographing state. The plurality of lens retaining frames includes a retractable lens retaining frame to movably retain the retractable lens group so as to position the plurality of lens groups on a photographing axis in the photographing state and to retract the retractable lens group to a housing located outside an inside diameter position of the movable lens barrel in the collapsed state.Type: ApplicationFiled: June 6, 2011Publication date: April 11, 2013Inventors: Tetsuya Iwasaki, Terunori Koyama
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Patent number: 8314877Abstract: A lens barrel includes: at least one lens group which constitutes an imaging optical system; a lens frame which retains the at least one lens group; and a retaining frame which retains the lens frame, the at least one lens group being capable of moving from a collapse position to a photographable position, at least one cam member being arranged between the lens frame and the retaining frame, and tilt of the lens frame relative to the retaining frame being changed by moving the at least one cam member.Type: GrantFiled: March 27, 2008Date of Patent: November 20, 2012Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki
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Publication number: 20120261185Abstract: Provided is a wiring harness that has favorable radiation performance, is capable of achieving a reduced space for wiring, and allows an easy wiring task. A wiring harness includes three single flat cables, each of which has a flat shape in cross section in a width direction and includes a conductor having a flat shape and an insulator with which the conductor is coated, wherein the single flat cables are disposed in parallel in the width direction in a protection member where the flat cables are prevented from overlapping each other.Type: ApplicationFiled: December 22, 2010Publication date: October 18, 2012Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Satoshi Murao, Takehiro Hosokawa, Masashi Sato, Tetsuya Iwasaki, Masanobu Yoshimura, Yukihiro Sakamoto
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Patent number: 8284289Abstract: At least one object of the present invention is to provide a lens barrel, including: a fixed frame (21) having a fixed cylinder (21); a telescopic cylinder (22, 23, 24, etc.) configured to be accommodated within the fixed cylinder (21); a plurality of lens groups (11, 12) configured to be retained in the telescopic cylinder; a lens driving device (51, 52, etc.) configured to drive the plurality of lens groups along a optical axis of the telescopic cylinder between a collapsed position and an extended position; and two retractable lens groups (13, 14) configured to be retracted into the telescopic cylinder when the telescopic cylinder is in the extended position and configured to be retracted out of the telescopic cylinder when the telescopic cylinder is in the collapsed position.Type: GrantFiled: December 16, 2010Date of Patent: October 9, 2012Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki
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Patent number: 8169250Abstract: A signal level conversion circuit includes three or more level shift circuits to output internal output signals upon receiving input signals, respectively. Each of the level shift circuits is formed of a common electrical element and an electrical element connected to the common electrical element. A voltage higher than that supplied to the common electrical element is supplied to the electrical element. A buffer circuit having an input tolerant function is provided in each of the common electrical elements. The internal output signals are set at lower level than the input signals by the buffer circuits, and the internal output signal outputted from one of the level shift circuits is further outputted via other level shift circuits.Type: GrantFiled: February 11, 2010Date of Patent: May 1, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Hideaki Miyoshi, Tetsuya Iwasaki, Taketoshi Tsujita, Tomohiko Konno
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Publication number: 20120093495Abstract: A lens barrel that reinforces a connecting part between a movable lens barrel and a fixed barrel, without requiring a new drive source, is disclosed. The lens barrel includes: a rotary barrel fitted in a fixed barrel; a cam mechanism for connecting the rotary barrel and the fixed barrel; and a ring member. The fixed barrel includes an engagement section and a rotary drive mechanism for revolving the ring member. The rotary drive mechanism locates the ring member to an engagement-enabling position when a connection by the cam mechanism reaches a predetermined position, directing the connection from a first end to a second end of an idle revolving area, the first end continuing to an advancement/retreat movement area; and to a release position, when the connection by the cam mechanism is located at the first end of the idle revolving area.Type: ApplicationFiled: October 14, 2011Publication date: April 19, 2012Inventor: Tetsuya IWASAKI
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Patent number: 8077409Abstract: A drive mechanism includes a rotational cylinder capable of moving upon the optical axis, a cam part on a fixed member and a cam follower which is formed on the rotational cylinder fitting with the cam part and has a conical portion and a cylindrical portion. The cam part includes a tapered cam groove formed such that the cylinder extends in the optical axis upon a range whereupon the cylinder moves from the collapsed state to a photography state and a planar surface formed such that the cylinder does not move upon the optical axis upon the photography range. The conical portion fits with the cam groove of the cam part upon the range whereupon the cylinder moves upon the optical axis, and the cylindrical portion fits with the planar surface of the cam part upon the range whereupon the cylinder does not move upon the optical axis.Type: GrantFiled: August 25, 2009Date of Patent: December 13, 2011Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki
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Patent number: 8045277Abstract: A cam locus of the cam surface on the image plane side of the first group cam groove of the rotating cylinder has an angle to a flat surface where the optical axis crosses perpendicularly. When the cam follower engages with the cam surface on the image plane side, an impact force is dispersed into the optical axis direction and the rotating direction of the rotating cylinder, and a load on the cam follower and male helicoid is reduced. When the first group lens system is pressed by a light load, the cam follower of the first group lens movement frame engages with the cam surface on the image plane side, and an angle of the cam surface is equal to an angle of a force occurring in the rotating direction. Therefore, the rotating cylinder does not rotate easily, and returns to its previous position when the load is removed.Type: GrantFiled: October 13, 2010Date of Patent: October 25, 2011Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki
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Publication number: 20110236614Abstract: A net-shaped protective material for wire harness sheathing which has flame retardancy and is free from mesh deformation. Vertical strands (2) and horizontal strands (3) which are constituted of a flame-retardant resin wire having an elliptic sectional shape have been pressed and hot melt bonded at the intersections (4) thereof to form a net shape. The vertical strands and horizontal strands are superposed at the intersections without interlacing, and one or both of the vertical strands and horizontal strands are melted in a state where 40% to 50% of the sectional area has been melted and embedded in the other strands. The protective metal has a cut end which has undergone fraying prevention processing.Type: ApplicationFiled: November 18, 2009Publication date: September 29, 2011Applicant: SUMITOMO WIRING SYSTEMS, LTD.Inventors: Tadao Ushikai, Tetsuya Iwasaki
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Publication number: 20110213521Abstract: A control system of a hybrid vehicle, includes: an engine; a motor capable of driving the engine; an oil pump for supplying a lubricant oil to a lubrication requiring portion of the engine; and an engine lubrication controller configured to make the following operations in a case that a stop state of the engine continues for more than or equal to a certain period: when a vehicle stop condition that a driver has no intention of travel is established, supplying, by the oil pump, the lubricant oil to the lubrication requiring portion of the engine, and rotating the engine by the motor without igniting the engine, thereby implementing an engine lubrication control.Type: ApplicationFiled: February 24, 2011Publication date: September 1, 2011Inventors: Takao ITO, Yoshiyuki Ootake, Masaki Koga, Tetsuya Iwasaki, Takashi Ogino, Yasuhiro Konishi, Tomoyuki Koike, Hiroyuki Suzuki
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Patent number: 7969662Abstract: A lens barrel unit including a lens barrel which has a plurality of lens groups and is set to a photographing state by moving at least a part of the lens groups to an object side and to a collapsed state by moving the at least the part of the lens groups to an image plane side and storing the lens groups, the lens barrel unit includes: a first supporting frame which retains at least one lens group of the lens groups; a second supporting frame which retains the first supporting frame movably in an optical axis direction of the lens barrel; a first supporting frame moving section which moves the first supporting frame in the optical axis direction of the lens barrel; and a fixed cylinder in which a main shaft which is capable of moving the second supporting frame in the optical axis direction of the lens barrel is provided.Type: GrantFiled: December 23, 2009Date of Patent: June 28, 2011Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki
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Publication number: 20110128634Abstract: A cam locus of the cam surface on the image plane side of the first group cam groove of the rotating cylinder has an angle to a flat surface where the optical axis crosses perpendicularly. When the cam follower engages with the cam surface on the image plane side, an impact force is dispersed into the optical axis direction and the rotating direction of the rotating cylinder, and a load on the cam follower and male helicoid is reduced. When the first group lens system is pressed by a light load, the cam follower of the first group lens movement frame engages with the cam surface on the image plane side, and an angle of the cam surface is equal to an angle of a force occurring in the rotating direction. Therefore, the rotating cylinder does not rotate easily, and returns to its previous position when the load is removed.Type: ApplicationFiled: October 13, 2010Publication date: June 2, 2011Inventor: Tetsuya Iwasaki
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Patent number: 7952029Abstract: An insulated wire including a conductor, an inside coat of one or more layers arranged to cover the conductor, and an outside coat arranged to cover the outermost layer of the inside coat, wherein at least the layer of the inside coat which is in contact with the conductor is made from an olefin resin including a functional group, and the outside coatis made from a non-halogenous flame-retardant resin composition. The functional group is preferably one or more groups selected from a carboxylic acid group, an acid anhydrous group, an epoxy group, a hydroxyl group, an amino group, an alkenyl cyclic imino ether group, and a silane group.Type: GrantFiled: July 18, 2007Date of Patent: May 31, 2011Assignees: Autonetwork Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Tatsuya Hase, Masato Inoue, Tsuyoshi Nonaka, Masashi Sato, Naoaki Sawamura, Tetsuya Iwasaki, Yukihiro Sakamoto
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Publication number: 20110102911Abstract: At least one object of the present invention is to provide a lens barrel, including: a fixed frame (21) having a fixed cylinder (21); a telescopic cylinder (22, 23, 24, etc.) configured to be accommodated within the fixed cylinder (21); a plurality of lens groups (11, 12) configured to be retained in the telescopic cylinder; a lens driving device (51, 52, etc.) configured to drive the plurality of lens groups along a optical axis of the telescopic cylinder between a collapsed position and an extended position; and two retractable lens groups (13, 14) configured to be retracted into the telescopic cylinder when the telescopic cylinder is in the extended position and configured to be retracted out of the telescopic cylinder when the telescopic cylinder is in the collapsed position.Type: ApplicationFiled: December 16, 2010Publication date: May 5, 2011Inventor: Tetsuya IWASAKI
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Patent number: 7876508Abstract: A lens drive unit is configured to move a lens holding frame to a desired position by the engagement between a cam groove of a rotary cylinder and a cam follower of the lens holding frame. The lens drive unit includes a second linearly-moving guide cylinder arranged between the lens holding frame and a first linearly-moving guide cylinder. The second linearly-moving guide cylinder can be moved in the optical a direction with rotation of the rotary cylinder by the engagement of a cam follower of the second linearly-moving guide cylinder with a second cam groove of the rotary cylinder. The lens holding frame is guided in the optical axis direction by the second linearly-moving guide cylinder and moved in the optical axis direction with rotation of the rotary cylinder by the engagement of a cam follower of the lens holding frame with a first cam groove of the rotary cylinder.Type: GrantFiled: August 14, 2009Date of Patent: January 25, 2011Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki
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Patent number: 7872683Abstract: At least one object of the present invention is to provide a lens barrel, including: a fixed frame (21) having a fixed cylinder (21); a telescopic cylinder (22, 23, 24, etc.) configured to be accommodated within the fixed cylinder (21); a plurality of lens groups (11, 12) configured to be retained in the telescopic cylinder; a lens driving device (51, 52, etc.) configured to drive the plurality of lens groups along a optical axis of the telescopic cylinder between a collapsed position and an extended position; and two retractable lens groups (13, 14) configured to be retracted into the telescopic cylinder when the telescopic cylinder is in the extended position and configured to be retracted out of the telescopic cylinder when the telescopic cylinder is in the collapsed position.Type: GrantFiled: March 6, 2006Date of Patent: January 18, 2011Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki
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Patent number: 7864241Abstract: A lens barrel includes: a lens frame retaining at least one portion of the plurality of lens groups; a first lens cylinder supporting the lens frame inside thereof and including a plurality of cam followers on an outer circumferential section thereof; and a second lens cylinder including a mutually parallel plurality of cam grooves in an inner circumferential section thereof and storing the first lens cylinder therein in the collapsed state, the plurality of cam grooves are engaged with the plurality of cam followers and configured to advance and retire the first lens cylinder in a direction of an optical axis by a relative rotation of the first lens cylinder, the plurality of cam grooves have a first cam grooves and a second cam grooves, the plurality of cam followers have a first cam follower and a second cam follower, the first cam follower and the second cam follower are engaged with the first cam grooves and the second cam grooves, respectively, and the first cam follower and the second cam follower areType: GrantFiled: October 17, 2006Date of Patent: January 4, 2011Assignee: Ricoh Company, Ltd.Inventor: Tetsuya Iwasaki