Patents by Inventor Kenji Kawasaki
Kenji Kawasaki 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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Publication number: 20060187499Abstract: When exchanging a dichroic mirror to detect fluorescence of a different wavelength, it is unnecessary to carry out precise positional adjustment, particularly in a compact examination apparatus, and the dichroic mirror can be easily exchanged. The invention provides a connection unit including a light-source optical fiber, removably connected to the light source, for conveying the excitation light from the light source; a collimator lens for collimating the excitation light emitted from the light-source optical fiber to introduce the excitation light to the optical scanning section; and a dichroic mirror for splitting off fluorescence, which is generated in the sample and which returns via the objective lens and the optical scanning section, from a light path of the excitation light and for directing the fluorescence to a photodetector. The light-source optical fiber, the collimator lens, and the dichroic mirror are secured to each other such that optical axes thereof are aligned.Type: ApplicationFiled: January 23, 2006Publication date: August 24, 2006Inventors: Yasuaki Natori, Kenji Kawasaki, Kenji Karaki, Yoshihiro Kawano
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Patent number: 7072119Abstract: An afocal zoom lens for microscopes includes five lens units having, in order from the object side, positive, negative, negative, positive, and negative refracting powers. When the magnification of the afocal zoom lens is changed in the range from a low-magnification position to a high-magnification position, a first lens unit and a fifth lens unit are fixed, a second lens unit is moved toward the image side, and a fourth lens unit is moved toward the object side. The afocal zoom lens satisfies the following condition: 0?F2/F3?2.5 where the focal length of the second lens unit is represented by F2 and the focal length of a third lens unit is represented by F3. The third lens unit is constructed with at least one negative lens with a concave surface facing the object side.Type: GrantFiled: September 13, 2004Date of Patent: July 4, 2006Assignee: Olympus CorporationInventor: Kenji Kawasaki
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Publication number: 20060041853Abstract: The present invention provides a CAD apparatus having high plotting efficiency, a symbol creation device facilitating symbol creation, a CAD program storage medium storing a CAD program incorporated into a computer to enable the computer to operate as the CAD apparatus, and a symbol creation program storage medium storing a symbol creation program incorporated into a computer to enable the computer to operate as the symbol creation device. There are provided a symbol data reading section that acquires table data (symbol data) representing a list describing attributes of each pin of an electronic part having plural pins, and a symbol creation section that applies each symbol pin having the same attribute as each attribute described in the list represented by table data acquired by the table data acquirement section to a part symbol representing the electronic part in arrangements corresponding to a described position of the attribute in the list.Type: ApplicationFiled: November 24, 2004Publication date: February 23, 2006Applicant: Fujitsu LimitedInventors: Kenji Kawasaki, Tsuneo Oka
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Publication number: 20050231799Abstract: An optical apparatus minimizes autofluorescence and stray light as well as leakage of excitation light and efficiently utilizes illuminating light from a fluorescence illumination optical system to allow observation of a bright fluorescence image. An observation apparatus has an objective, an observation optical system unit including a variable magnification optical system, and an imaging optical system unit including an imaging lens and an eyepiece. A fluorescence illumination apparatus, which is provided separately, is removably attached to the observation apparatus. The fluorescence illumination apparatus has a light source, a collector lens unit, and a reflecting member placed between the objective and the observation optical system unit at a position displaced from the optical axis of the objective to make light from the light source incident on the objective. An excitation filter is provided between the light source and the reflecting member.Type: ApplicationFiled: June 8, 2005Publication date: October 20, 2005Applicant: Olympus CorporationInventors: Kenji Kawasaki, Daisuke Nishiwaki, Keiji Shimizu
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Publication number: 20050187441Abstract: A laser-scanning examination apparatus includes a laser light source; an optical fiber through which laser light generated in the laser light source is transmitted; a scan head including a casing for housing a laser scanning unit that scans the laser light transmitted by the optical fiber on a specimen, an objective unit for imaging the laser light scanned by the laser scanning unit onto the specimen; an optical detector for detecting returning light that returns from the specimen to the interior of the casing via the objective unit; a stage for mounting the specimen; and an arm that supports the scan head so that the position and orientation of the objective unit with respect to the stage can be adjusted. The optical detector is provided on an outer surface of the casing except for the surface located in the opposite direction from the direction in which the arm extends from the casing.Type: ApplicationFiled: January 14, 2005Publication date: August 25, 2005Inventors: Kenji Kawasaki, Hiroshi Sasaki, Kenichi Koyama, Atsuhiro Tsuchiya, Yoshihiro Kawano
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Publication number: 20050174654Abstract: An afocal zoom lens for microscopes includes five lens units having, in order from the object side, positive, negative, negative, positive, and negative refracting powers. When the magnification of the afocal zoom lens is changed in the range from a low-magnification position to a high-magnification position, a first lens unit and a fifth lens unit are fixed, a second lens unit is moved toward the image side, and a fourth lens unit is moved toward the object side. When the focal length of the second lens unit is represented by F2 and the focal length of a third lens unit is represented by F3, the afocal zoom lens satisfies the following condition: 0?F2/F3?2.5 The third lens unit is constructed with at least one negative lens with a concave surface facing the object side.Type: ApplicationFiled: September 13, 2004Publication date: August 11, 2005Inventor: Kenji Kawasaki
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Technique for simplified user registration of purchased goods using existing communications networks
Publication number: 20050075938Abstract: The present invention provides a technique for simplifying consumer user registration of a product. A removable memory is provided by a manufacturer with a consumer device, such as an electrical appliance, that needs registration for warranty purposes, etc. The memory includes predetermined information, such as consumer information. Later, when a consumer purchases the electric appliance, the removable memory M is mounted in the electric appliance, and the information from the electric appliance is written into the removable memory. The information written into the removable memory is transferred to the manufacturer, employing a portable telephone terminal, a home gateway, or the like, thereby completing the user registration process.Type: ApplicationFiled: March 28, 2003Publication date: April 7, 2005Applicant: International Business Machines CorporationInventors: Syunichi Mukai, Kenji Kawasaki, Kaoru Sudo, Toshiaki Igi -
Patent number: 6809861Abstract: An optical apparatus minimizes autofluorescence and stray light as well as leakage of excitation light and efficiently utilizes illuminating light from a fluorescence illumination optical system to allow observation of a bright fluorescence image. An observation apparatus has an objective, an observation optical system unit including a variable magnification optical system, and an imaging optical system unit including an imaging lens and an eyepiece. A fluorescence illumination apparatus, which is provided separately, is removably attached to the observation apparatus. The fluorescence illumination apparatus has a light source, a collector lens unit, and a reflecting member placed between the objective and the observation optical system unit at a position displaced from the optical axis of the objective to make light from the light source incident on the objective. An excitation filter is provided between the light source and the reflecting member.Type: GrantFiled: December 1, 2000Date of Patent: October 26, 2004Assignee: Olympus CorporationInventors: Kenji Kawasaki, Daisuke Nishiwaki, Keiji Shimizu
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Patent number: 6807014Abstract: A zoom photographic optical system having a broad vari-focal range which comprises, in order from a side of an objective lens system, at least a first positive lens unit, a second negative lens unit and a third positive lens unit, moves the second lens unit and the third lens unit for changing a magnification from a low magnification position to a high magnification position so that an airspace between the first lens unit and the second lens unit at the high magnification position is shorter than that at the low magnification position and an airspace between the second lens unit and the third lens unit at the high magnification position is longer than that the low magnification position, forms an intermediate image between the first lens unit and the second lens unit at the low magnification position, and satisfies the following conditions (1) and (2): 1≦FH/FL≦3 (1) 3≦MGH/MGL≦20 (2)Type: GrantFiled: December 22, 2003Date of Patent: October 19, 2004Assignee: Olympus CorporationInventor: Kenji Kawasaki
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Publication number: 20040156118Abstract: A zoom photographic optical system having a broad vari-focal range which comprises, in order from a side of an objective lens system, at least a first positive lens unit, a second negative lens unit and a third positive lens unit, moves the second lens unit and the third lens unit for changing a magnification from a low magnification position to a high magnification position so that an airspace between the first lens unit and the second lens unit at the high magnification position is shorter than that at the low magnification position and an airspace between the second lens unit and the third lens unit at the high magnification position is longer than that the low magnification position, forms an intermediate image between the first lens unit and the second lens unit at the low magnification position, and satisfies the following conditions (1) and (2):Type: ApplicationFiled: December 22, 2003Publication date: August 12, 2004Applicant: OLYMPUS CORPORATIONInventor: Kenji Kawasaki
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Publication number: 20040085628Abstract: An optical apparatus minimizes autofluorescence and stray light as well as leakage of excitation light and efficiently utilizes illuminating light from a fluorescence illumination optical system to allow observation of a bright fluorescence image. An observation apparatus has an objective, an observation optical system unit including a variable magnification optical system, and an imaging optical system unit including an imaging lens and an eyepiece. A fluorescence illumination apparatus, which is provided separately, is removably attached to the observation apparatus. The fluorescence illumination apparatus has a light source, a collector lens unit, and a reflecting member placed between the objective and the observation optical system unit at a position displaced from the optical axis of the objective to make light from the light source incident on the objective. An excitation filter is provided between the light source and the reflecting member.Type: ApplicationFiled: September 30, 2003Publication date: May 6, 2004Applicant: Olympus Optical Co., Ltd.Inventors: Kenji Kawasaki, Daisuke Nishiwaki, Keiji Shimizu
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Patent number: 6691130Abstract: A browsing data creation system of an information searching apparatus includes a data storage for storing plural kinds of data that are to be searched for. Each of the data having a data format corresponding to the kind of data that is is. Instructions can be input into the information searching apparatus and browsing data can be created from the data stored in the data storage according to a data format input into the information searching apparatus. Data that is to be searched for has a time based access and is divided into page units. An instruction is input to the information searching apparatus to search in page units.Type: GrantFiled: October 3, 2001Date of Patent: February 10, 2004Assignee: Hitachi, Ltd.Inventors: Kenji Kawasaki, Tetsuo Tanaka, Yoshiaki Morimoto, Kunihisa Nitta, Kimio Tanaka
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Patent number: 6674582Abstract: The invention relates to a microscope zoom objective lens system having improved optical performance, and comprising a compact optical system with a zoom ratio of at least 3. The microscope zoom objective lens system comprises a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power and a third lens group G3 having positive refractive power. For zooming from a low to a high magnification side, the second and third lens groups G2 and G3 move along the optical axis while the separation between the first lens group G1 and the second lens group G2 becomes wide and the separation between the second lens group G2 and the third lens group G3 becomes narrow. The first lens group G1 comprises at least one doublet having positive refractive power and consisting of a positive lens and a negative lens. The positive lens has an Abbe number defined by &ngr;>80.Type: GrantFiled: November 7, 2001Date of Patent: January 6, 2004Assignee: Olympus CorporationInventor: Kenji Kawasaki
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Patent number: 6643061Abstract: In the present invention, a transmission-illumination apparatus for use in a microscope has a transmission-illumination optical system comprising a condenser lens for radiating light emitted from a light source onto a sample, and an observation optical system including an objective lens for observing the sample. At least two shield members for controlling a shape of an aperture created in a pupil of the objective lens are disposed at or near positions conjugate with a pupil position of the objective lens. Thereby, a contrast can be successively varied without disposing a purpose-specific optical element, etc. in the observation optical system, and illumination with an optimal contrast can be provided for various samples.Type: GrantFiled: April 1, 2002Date of Patent: November 4, 2003Assignee: Olympus Optical Co., Ltd.Inventors: Kazuhiko Osa, Minoru Sukekawa, Kenji Kawasaki
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Publication number: 20030165021Abstract: The invention relates to a microscope zoom objective lens system having improved optical performance, and comprising a compact optical system with a zoom ratio of at least 3. The microscope zoom objective lens system comprises a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power and a third lens group G3 having positive refractive power. For zooming from a low to a high magnification side, the second and third lens groups G2 and G3 move along the optical axis while the separation between the first lens group G1 and the second lens group G2 becomes wide and the separation between the second lens group G2 and the third lens group G3 becomes narrow. The first lens group G1 comprises at least one doublet having positive refractive power and consisting of a positive lens and a negative lens. The positive lens has an Abbe number defined by &ngr;>80.Type: ApplicationFiled: November 7, 2001Publication date: September 4, 2003Applicant: OLYMPUS OPTICAL CO., LTD.Inventor: Kenji Kawasaki
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Publication number: 20020191281Abstract: In the present invention, a transmission-illumination apparatus for use in a microscope has a transmission-illumination optical system comprising a condenser lens for radiating light emitted from a light source onto a sample, and an observation optical system including an objective lens for observing the sample. At least two shield members for controlling a shape of an aperture created in a pupil of the objective lens are disposed at or near positions conjugate with a pupil position of the objective lens. Thereby, a contrast can be successively varied without disposing a purpose-specific optical element, etc. in the observation optical system, and illumination with an optimal contrast can be provided for various samples.Type: ApplicationFiled: April 1, 2002Publication date: December 19, 2002Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Kazuhiko Osa, Minoru Sukekawa, Kenji Kawasaki
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Patent number: 6456430Abstract: A microscope is disclosed that includes: a light source that emits light in a wavelength range that includes both visible and infrared wavelengths, an illuminating optical system for illuminating a specimen with the light from the light source, an objective lens for gathering light from the specimen and causing it to converge, a light beam dividing unit that divides the beam of light from the objective lens into plural divided light paths such that the wavelength ranges in the divided light paths differ from one another, a magnification conversion optical system in one of the divided light paths which converts the magnification of images formed by light in that divided light path, and an imaging device located in each of at least two of the divided light paths, wherein the objective lens has a magnifying power less than or equal to 32 and a numerical aperture greater than or equal to 0.80.Type: GrantFiled: June 20, 2001Date of Patent: September 24, 2002Assignee: Olympus Optical Co., Ltd.Inventors: Takashi Kasahara, Katsuyuki Abe, Kenji Kawasaki
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Patent number: 6407857Abstract: A lens barrel for microscope comprises a first optical system (G1), a second optical system (G2), and a third optical system (G3). The first optical system (G1) comprises a lens unit (G1L) which forms an intermediate image, a prism (P1), and deflecting mirrors (M1, M2). The second optical system (G2) comprises a deflecting mirror (M3) and a lens unit and converts an intermediate image by the lens unit (G1L) into a beam of parallel rays. The third optical system (G3) introduces the beam of parallel rays from the second optical system (G2) into an ocular. The deflecting mirror (M3) is configured to be turned around an axis normal to a center axis of the beam of rays from the first optical system (G1) and to a center axis of the beam of rays from the second optical system (G2) at the point P of intersection of these center axes.Type: GrantFiled: March 13, 2001Date of Patent: June 18, 2002Assignee: Olympus Optical Co., Ltd.Inventor: Kenji Kawasaki
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Patent number: 6396628Abstract: In the present invention, a transmission-illumination apparatus for use in a microscope has a transmission-illumination optical system comprising a condenser lens for radiating light emitted from a light source onto a sample, and an observation optical system including an objective lens for observing the sample. At least two shield members for controlling a shape of an aperture created in a pupil of the objective lens are disposed at or near positions conjugate with a pupil position of the objective lens. Thereby, a contrast can be successively varied without disposing a purpose-specific optical element, etc. in the observation optical system, and illumination with an optimal contrast can be provided for various samples.Type: GrantFiled: February 28, 2000Date of Patent: May 28, 2002Assignee: Olympus Optical Co., Ltd.Inventors: Kazuhiko Osa, Minoru Sukekawa, Kenji Kawasaki
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Patent number: D514028Type: GrantFiled: November 22, 2004Date of Patent: January 31, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Masaki Aikawa, Kenji Kawasaki