Patents by Inventor Takao Tanabe
Takao Tanabe 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: 11808933Abstract: Provided is a liquid immersion objective including an objective lens having a prescribed optical power, and a plurality of planar plates having substantially no optical power and having different thicknesses, and configured to be placed between the objective lens and immersion liquid deposited on a sample to be observed, the planar plates being made of a substantially same material, wherein the planar plates being selected according to a property of the immersion liquid.Type: GrantFiled: March 2, 2021Date of Patent: November 7, 2023Assignee: KYOCERA SOC CorporationInventor: Takao Tanabe
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Publication number: 20230288670Abstract: An objective lens includes first to ninth lenses arranged in this order from a magnification side and includes no cemented lens. The first lens consists of a meniscus lens having a negative refractive power, the second lens consists of a biconcave lens, the third lens consists of a meniscus lens having a positive refractive power, the fourth lens consists of a biconvex lens, the fifth lens consists of a meniscus lens having a negative refractive power, the sixth lens consists of a biconvex lens, the seventh lens consists of a lens that has an arbitrary shape and has a positive refractive power, the eighth lens consists of a meniscus lens having a positive refractive power; and the ninth lens consists of a meniscus lens having a positive refractive power. The ninth lens has a thickness 1.5 times to 3 times a focal length of the objective lens.Type: ApplicationFiled: October 19, 2022Publication date: September 14, 2023Inventor: Takao TANABE
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Publication number: 20230194831Abstract: An objective lens configured by multiple lenses each consisting of a single lens has a retro ratio of 1.5 or higher. The multiple lenses configure a substantially afocal first lens group and a positive second lens group arranged in this order from a magnification side. The first lens group includes a 1a lens group having a negative power and a 1b lens group having a positive power which are arranged in this order from the magnification side. Provided that a focal length of the first lens group is represented by f(Gr1) and a focal length of a whole system of the objective lens is represented by f(total), a condition of |f(Gr1)/f(total)|>10 is satisfied. The second lens group includes a 2a lens group having a negative power and a 2b lens group having a positive power which are arranged in this order from the magnification side.Type: ApplicationFiled: July 26, 2022Publication date: June 22, 2023Inventor: Takao TANABE
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Patent number: 11480762Abstract: A short-wavelength infrared imaging lens includes first and second lens groups arranged in order from an object side. The first lens group has a negative refractive power as a whole. The second lens group has a positive refractive power as a whole and includes at least one positive lens that satisfies following conditional expressions (1) and (2): V2p>40??(1) N2p>1.7??(2) Here, N2p is a refractive index N [1.53] of the positive lens at a wavelength of 1.53 ?m, and the Abbe number V2p is an Abbe number of the positive lens in a short-wavelength infrared range and is defined as (N [1.53]?1)/(N [0.9]?N [2.325]) when refractive indexes of the at least one positive lens at wavelengths of 0.9 ?m, 1.53 ?m, and 2.325 ?m are represented by N [0.9], N [1.53], and N [2.325], respectively.Type: GrantFiled: April 2, 2020Date of Patent: October 25, 2022Assignee: KYOCERA SOC CORPORATIONInventors: Noboru Koizumi, Takao Tanabe, Masaya Ishii
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Publication number: 20210271064Abstract: Provided is a liquid immersion objective comprising an objective lens having a prescribed optical power, and a plurality of planar plates having substantially no optical power and having different thicknesses, and configured to be placed between the objective lens and immersion liquid deposited on a sample to be observed, the planar plates being made of a substantially same material, wherein the planar plates being selected according to a property of the immersion liquid.Type: ApplicationFiled: March 2, 2021Publication date: September 2, 2021Inventor: Takao Tanabe
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Publication number: 20200319437Abstract: A short-wavelength infrared imaging lens includes first and second lens groups arranged in order from an object side. The first lens group has a negative refractive power as a whole. The second lens group has a positive refractive power as a whole and includes at least one positive lens that satisfies following conditional expressions (1) and (2): V2p>40??(1) N2p>1.7??(2) Here, N2p is a refractive index N [1.53] of the positive lens at a wavelength of 1.53 ?m, and the Abbe number V2p is an Abbe number of the positive lens in a short-wavelength infrared range and is defined as (N [1.53]?1)/(N [0.9]?N [2.325]) when refractive indexes of the at least one positive lens at wavelengths of 0.9 ?m, 1.53 ?m, and 2.325 ?m are represented by N [0.9], N [1.53], and N [2.325], respectively.Type: ApplicationFiled: April 2, 2020Publication date: October 8, 2020Inventors: Noboru Koizumi, Takao Tanabe, Masaya Ishii
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Patent number: 9668650Abstract: An ophthalmologic apparatus includes a two-dimensional scanning optical system, a refractive optical system, and a concave mirror. The two-dimensional scanning optical system deflects light from a light source in a first angle range. The refractive optical system deflects the light deflected by the two-dimensional scanning optical system in a second angle range that is wider than the first angle range. The concave mirror includes a reflective surface in at least part of the rotational symmetry surface, and reflects the light emitted from the refractive optical system. The exit-side optical axis of the refractive optical system substantially coincides with the rotational symmetry axis of the rotational symmetry surface. The pupil location in the refractive optical system and the exit focus of the concave mirror are located at optically conjugate positions or in the vicinity of the positions. The exit focus is located at a subject's eye position.Type: GrantFiled: April 8, 2015Date of Patent: June 6, 2017Assignee: KABUSHIKI KAISHA TOPCONInventors: Takao Tanabe, Ikuo Ishinabe, Kazuhiro Omori, Takuji Sato
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Publication number: 20150282707Abstract: An ophthalmologic apparatus includes a two-dimensional scanning optical system, a refractive optical system, and a concave mirror. The two-dimensional scanning optical system deflects light from a light source in a first angle range. The refractive optical system deflects the light deflected by the two-dimensional scanning optical system in a second angle range that is wider than the first angle range. The concave mirror includes a reflective surface in at least part of the rotational symmetry surface, and reflects the light emitted from the refractive optical system. The exit-side optical axis of the refractive optical system substantially coincides with the rotational symmetry axis of the rotational symmetry surface. The pupil location in the refractive optical system and the exit focus of the concave mirror are located at optically conjugate positions or in the vicinity of the positions. The exit focus is located at a subject's eye position.Type: ApplicationFiled: April 8, 2015Publication date: October 8, 2015Applicant: KABUSHIKI KAISHA TOPCONInventors: Takao TANABE, Ikuo ISHINABE, Kazuhiro OMORI, Takuji SATO
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Patent number: 7566129Abstract: An ophthalmologic apparatus is disclosed. In one aspect, the apparatus includes an ocular fundus photographing systems for forming an ocular fundus image of the examined eye, based on a reflective beam from the ocular fundus of the examined eye, and an ocular fundus tracking controller for detecting a gaze direction of the examined eye by receiving the reflective beam reflected at a reflective region of an illumination region illuminated on the ocular fundus and for tracking the ocular fundus based on the detection results of the gaze direction. The ocular fundus tracking controller may include scanning mirrors for scanning an area to detect a reflective beam from the ocular fundus, tracking mirrors for controlling tracking to the ocular fundus, an objective lens disposed opposite to the examined, and an offset mirror M19 for adjusting a detection axis in a gaze direction.Type: GrantFiled: June 22, 2007Date of Patent: July 28, 2009Assignee: Kabushiki Kaisha TOPCONInventors: Masayuki Hideshima, Kazuo Nunokawa, Makoto Fujino, Yoichiro Iwa, Akemi Miwa, Yoshiaki Goto, Gaku Takeuchi, Takao Tanabe
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Patent number: 7540614Abstract: An ophthalmologic apparatus includes an imaging system that illuminates a retina of an eye, and images the retina of the eye based on reflective luminous flux from the retina, an aberration measurement part that measures optical aberration of the eye, an aberration compensation device disposed in the imaging system to compensate the optical aberration of the eye based on a signal from the aberration measurement part, a first focusing device disposed in an optical path of the imaging system to perform focusing of the image of the retina of the eye according to a refractive property of the eye, and a second focusing device disposed in the optical path of the imaging system to compensate infinitesimal spherical aberration generated by the aberration compensation device after adjustment by the first focusing device.Type: GrantFiled: December 27, 2007Date of Patent: June 2, 2009Assignee: Kabushiki Kaisha TOPCONInventors: Hiroyuki Kawashima, Gaku Takeuchi, Takao Tanabe, Noriyasu Kiryu
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Patent number: 7533990Abstract: An ophthalmologic apparatus is disclosed. In one aspect, the apparatus includes ocular fundus photographing systems for forming an ocular fundus image of the examined eye, based on a reflective beam from the ocular fundus of the examined eye, and a light receiving element for receiving the reflective beam reflected at a reflective region of an illumination region illuminated on the ocular fundus. The apparatus further may include a tracking detector having a scanning unit for detecting a gaze direction of the tested eye, and an ocular fundus tracking controller for tracking the ocular fundus photographing system to the gaze direction.Type: GrantFiled: June 22, 2007Date of Patent: May 19, 2009Assignee: Kabushiki Kaisha TopconInventors: Masayuki Hideshima, Kazuo Nunokawa, Makoto Fujino, Yoichiro Iwa, Akemi Miwa, Yoshiaki Goto, Gaku Takeuchi, Takao Tanabe
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Patent number: 7524062Abstract: The invention is directed to an ophthalmologic apparatus. The apparatus includes a photographing system that illuminates an ocular fundus of a tested eye, and photographs an image of the ocular fundus of the tested eye based on a reflective beam from the ocular fundus, an aberration measurement part for measuring an optical aberration of the tested eye, an aberration compensation device disposed in the photographing system for compensating the aberration of the tested eye based on signals from the aberration measurement part, and a focusing device for substantially focusing corresponding to a refractive power of the tested eye by moving a part of an optical system comprising the photographing system along an optical axis direction.Type: GrantFiled: December 19, 2007Date of Patent: April 28, 2009Assignee: Kabushiki Kaisha TOPCONInventors: Yoichiro Iwa, Gaku Takeuchi, Takao Tanabe
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Publication number: 20080158508Abstract: An ophthalmologic apparatus includes an imaging system that illuminates a retina of an eye, and images the retina of the eye based on reflective luminous flux from the retina, an aberration measurement part that measures optical aberration of the eye, an aberration compensation device disposed in the imaging system to compensate the optical aberration of the eye based on a signal from the aberration measurement part, a first focusing device disposed in an optical path of the imaging system to perform focusing of the image of the retina of the eye according to a refractive property of the eye, and a second focusing device disposed in the optical path of the imaging system to compensate infinitesimal spherical aberration generated by the aberration compensation device after adjustment by the first focusing device.Type: ApplicationFiled: December 27, 2007Publication date: July 3, 2008Inventors: Hiroyuki Kawashima, Gaku Takeuchi, Takao Tanabe, Noriyasu Kiryu
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Publication number: 20080151189Abstract: The invention is directed to an opthalmologic apparatus. The apparatus includes a photographing system that illuminates an ocular fundus of a tested eye, and photographs an image of the ocular fundus of the tested eye based on a reflective beam from the ocular fundus, an aberration measurement part for measuring an optical aberration of the tested eye, an aberration compensation device disposed in the photographing system for compensating the aberration of the tested eye based on signals from the aberration measurement part, and a focusing device for substantially focusing corresponding to a refractive power of the tested eye by moving a part of an optical system comprising the photographing system along an optical axis direction.Type: ApplicationFiled: December 19, 2007Publication date: June 26, 2008Inventors: Yoichiro Iwa, Gaku Takeuchi, Takao Tanabe
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Publication number: 20080002151Abstract: An ophthalmologic apparatus is disclosed. In one aspect, the apparatus includes ocular fundus photographing systems for forming an ocular fundus image of the examined eye, based on a reflective beam from the ocular fundus of the examined eye, and a light receiving element for receiving the reflective beam reflected at a reflective region of an illumination region illuminated on the ocular fundus. The apparatus further may include a tracking detector having a scanning unit for detecting a gaze direction of the tested eye, and an ocular fundus tracking controller for tracking the ocular fundus photographing system to the gaze direction.Type: ApplicationFiled: June 22, 2007Publication date: January 3, 2008Applicant: Kabushiki Kaisha TOPCONInventors: Masayuki Hideshima, Kazuo Nunokawa, Makoto Fujino, Yoichiro Iwa, Akemi Miwa, Yoshiaki Goto, Gaku Takeuchi, Takao Tanabe
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Publication number: 20070296919Abstract: An opthalmologic apparatus is disclosed. In one aspect, the apparatus includes an ocular fundus photographing systems for forming an ocular fundus image of the examined eye, based on a reflective beam from the ocular fundus of the examined eye, and an ocular fundus tracking controller for detecting a gaze direction of the examined eye by receiving the reflective beam reflected at a reflective region of an illumination region illuminated on the ocular fundus and for tracking the ocular fundus based on the detection results of the gaze direction. The ocular fundus tracking controller may include scanning mirrors for scanning an area to detect a reflective beam from the ocular fundus, tracking mirrors for controlling tracking to the ocular fundus, an objective lens disposed opposite to the examined, and an offset mirror M19 for adjusting a detection axis in a gaze direction.Type: ApplicationFiled: June 22, 2007Publication date: December 27, 2007Applicant: Kabushiki Kaisha TOPCONInventors: Masayuki Hideshima, Kazuo Nunokawa, Makoto Fujino, Yoichiro Iwa, Akemi Miwa, Yoshiaki Goto, Gaku Takeuchi, Takao Tanabe
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Patent number: 5943051Abstract: The user interface system provides a mouse for inputting a time segment by pointing to an arbitrary position of the display screen. Displayed in a window, the time segment has a position and length to indicate hours or days. The segment editor displays the segment according to the length which is designated by the mouse. Segments may be duplicated from one window to another. The database entry stores the position and length of the time segment. To avoid or lessen scrolling of time segment data, a window may divided either horizontally or vertically when desired data is located far apart. Multiple windows displayed on the screen may be scrolled synchronously in one direction and independently scrolled in the opposite direction. Windows with different scaled information may be display simultaneously and synchronously scrolled.Type: GrantFiled: June 2, 1997Date of Patent: August 24, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kiyosumi Onda, Takao Tanabe, Norio Fujita, Yuichi Koizumi
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Patent number: 5877760Abstract: The user interface system provides a mouse for inputting a time segment by pointing to an arbitrary position of the display screen. Displayed in a window, the time segment has a position and length to indicate hours or days. The segment editor displays the segment according to the length which is designated by the mouse. The database entry stores the position and length of the time segment. To avoid or lessen scrolling of time segment data, a window may divided either horizontally or vertically when desired data is located far apart. Multiple windows displayed on the screen may be scrolled synchronously in one direction and independently scrolled in the opposite direction.Type: GrantFiled: June 6, 1996Date of Patent: March 2, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kiyosumi Onda, Takao Tanabe, Norio Fujita, Yuichi Koizumi
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Patent number: 5860067Abstract: The user interface system provides the input means for inputting a segment by pointing out an arbitrary position of the display screen with the input unit such as a mouse for pointing out arbitrary positions of the display screen. The segment has a position and a length to indicate hours or days. The segment editor displays the segment according to the length which is designated by the input unit such as a mouse. The database entry stores the data indicated by the position and the length of the segment as entered data.Thus, data is entered by inputting a segment. Therefore, data such as a time and a date are not needed to be entered from a keyboard. Since data entry is made by drawing a segment by using a mouse, operation is easy. Furthermore, since the length of the segment shows the hours or period visually to a system operator, the chances of errors are lessened.The user interface system provides a system to input additional information for a segment displayed by the segment editor.Type: GrantFiled: October 7, 1997Date of Patent: January 12, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kiyosumi Onda, Takao Tanabe, Norio Fujita, Yuichi Koizumi
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Patent number: D612963Type: GrantFiled: March 27, 2009Date of Patent: March 30, 2010Assignee: ShinMaywa Industries, Ltd.Inventors: Yasunori Oki, Takao Tanabe