Patents by Inventor Soh Ohzawa
Soh Ohzawa 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: 9867557Abstract: At the leading end of a probe (11) is provided a holding part (56) that has a space (60) having an inner diameter smaller than the inner diameter of the probe (11). A liquid discharge groove (61) that communicates between the space (60) and the outer peripheral side surface of the holding part (56) is formed in the holding part (56).Type: GrantFiled: February 14, 2013Date of Patent: January 16, 2018Assignee: Konica Minolta, Inc.Inventors: Soh Ohzawa, Shoichi Tao
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Patent number: 9167957Abstract: A probe which is inserted into a lumen of inside of a body, irradiates an observation object part of a physiological tissue with excitation light, and detects fluorescence resulting from the excitation light, wherein the probe including: a plus lens arranged facing toward a tip side of the probe; and a plurality of optical fibers receiving the fluorescence at tip surfaces through the plus lens, wherein the tip surface are directed toward the plus lens and arranged in positions offset from an optical axis of the plus lens, wherein positions of the tip surface of at least optical fibers of which an amount of offset from the optical axis of the plus lens differ mutually among plurality of optical fibers are shifted mutually along the optical axis of the plus lens.Type: GrantFiled: January 7, 2011Date of Patent: October 27, 2015Assignee: Konica Minolta Advanced Layers, Inc.Inventors: Toshinori Takimura, Soh Ohzawa
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Publication number: 20150045678Abstract: At the leading end of a probe (11) is provided a holding part (56) that has a space (60) having an inner diameter smaller than the inner diameter of the probe (11). A liquid discharge groove (61) that communicates between the space (60) and the outer peripheral side surface of the holding part (56) is formed in the holding part (56).Type: ApplicationFiled: February 14, 2013Publication date: February 12, 2015Inventors: Soh Ohzawa, Shoichi Tao
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Patent number: 8830483Abstract: An optical tomographic image forming method including: splitting low coherence light emitted from a light source is split into a measuring light and a reference light; forming an optical tomographic image of a measured object by detecting an interference light that is obtained by superposing reflected light, reflected from the measured object when the measuring light is irradiated onto the measured object via a condenser lens, and reflected light, reflected from a reference mirror, which is positioned a predetermined length of optical path away from the splitting position, when the reference light is irradiated onto the reference mirror, wherein the method further includes: inputting a refractive index of the measured object; correcting the tomographic image in accordance with the inputted refractive index of the measured object; and outputting the corrected tomographic image.Type: GrantFiled: September 4, 2009Date of Patent: September 9, 2014Assignee: Konica Minolta Opto, Inc.Inventors: Fumio Nagai, Soh Ohzawa
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Patent number: 8687928Abstract: Provided is an optical characteristic measuring probe which can detect the position and the direction of the leading end of the probe without affecting a monitoring image. The bendable optical characteristic measuring probe is provided with a light guide body (71), which transmits light emitted from a light source and irradiates a subject to be measured with light, and a guide tube (70), which holds the light guide body (71) such that the light guide body freely rotates about the axis and is freely displaced in the axis direction. The light guide body (71) guides at least two types of light, i.e., measuring light for measuring the optical characteristics of the subject to be measured, and position determining light for measuring the position of the light guide body. On the side surface of the guide tube (70), a mark (M) having the characteristics of transmitting the measuring light and returning only the position determining light to the light guide body is provided.Type: GrantFiled: March 3, 2010Date of Patent: April 1, 2014Assignee: Konica Minolta Opto, Inc.Inventor: Soh Ohzawa
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Patent number: 8602975Abstract: There is disclosed a probe (50) for directing light to an object to be measured and receiving light returned from the object to be measured, the probe including: an optical path (21) for transmitting light from a light source (10); a mirror member (52) for reflecting the light transmitted through the optical path (21); and a rotational oscillation mechanism (56) for rotatably oscillating the mirror member (52) and a tip end portion of the optical path (21) about a longitudinal axis of the optical path (21); wherein the rotational oscillation mechanism (56) is adapted to perform the rotational oscillation within a range defined by a torsional elasticity limit of the optical path (21). This configuration can provide an optical rotary probe with a simple structure and with high reliability, which is capable of suppressing optical losses and reflection ghosts.Type: GrantFiled: September 10, 2009Date of Patent: December 10, 2013Assignee: Konica Minolta Opto, Inc.Inventor: Soh Ohzawa
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Patent number: 8425044Abstract: A projection optical system receives light from a display device surface and enlarges and projects a display image thereon onto a screen surface. The projection optical system includes one or more reflective surfaces having an optical power between the display device surface and the screen surface, moves at least one optical device having an optical power to adjust focus and satisfies the following conditional formula: ?0.02<{(?1??2)?2}/{(?1+?2)?1}<0.Type: GrantFiled: February 25, 2008Date of Patent: April 23, 2013Assignee: Konica Minolta Opto, Inc.Inventors: Keiko Yamada, Soh Ohzawa, Masayuki Imaoka, Kohtaro Hayashi
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Publication number: 20120283576Abstract: A probe which is inserted into a lumen of inside of a body, irradiates an observation object part of a physiological tissue with excitation light, and detects fluorescence resulting from the excitation light, wherein the probe including: a plus lens arranged facing toward a tip side of the probe; and a plurality of optical fibers receiving the fluorescence at tip surfaces through the plus lens, wherein the tip surface are directed toward the plus lens and arranged in positions offset from an optical axis of the plus lens, wherein positions of the tip surface of at least optical fibers of which an amount of offset from the optical axis of the plus lens differ mutually among plurality of optical fibers are shifted mutually along the optical axis of the plus lens.Type: ApplicationFiled: January 7, 2011Publication date: November 8, 2012Applicant: Konica Minolta Opto, Inc.Inventors: Toshinori Takimura, Soh Ohzawa
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Patent number: 8270095Abstract: A variable-power optical system includes, in order from an object side thereof: a first lens group with a negative optical power; a second lens group with a positive optical power; a third lens group with a negative optical power; and a fourth lens group with a positive optical power. An interval between the first lens group and the second lens group decreases when a power of the variable-power optical system varies from a wide-angle end to a telephoto end. The second lens group includes at least one aspheric surface. The variable-power optical system satisfies the predetermined conditional expressions.Type: GrantFiled: November 27, 2007Date of Patent: September 18, 2012Assignee: Konica Minolta Opto, Inc.Inventors: Keiji Matsusaka, Soh Ohzawa, Yasunari Fukuta
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Publication number: 20120190990Abstract: A probe (4) is provided with at least a light projecting optical fiber (9) and a light receiving optical fiber (10) and is configured so that excitation light guided by the light projecting optical fiber is applied to the portion of a living organism which is to be observed and then light emitted, due to the excitation light, from the portion to be observed is received by the light receiving optical fiber. The probe (4) is also provided with an illumination means used for the capture of an image by the image capturing means of an endoscope body. The illumination means is, for example, a light emitting diode which is provided to the front end of the probe, a light guiding optical fiber (11) which guides illumination light from an illumination light source (5c) to the front end of the probe, or a light emitting substance piece which is disposed at the front end of the probe and emits white fluorescent light by excitation.Type: ApplicationFiled: June 23, 2011Publication date: July 26, 2012Applicant: Konica Minolta Opto, Inc.Inventors: Soh Ohzawa, Yasuyuki Natsuno, Katsumi Fujiwara, Yuichi Atarashi
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Publication number: 20120057149Abstract: Provided is an optical characteristic measuring probe which can detect the position and the direction of the leading end of the probe without affecting a monitoring image. The bendable optical characteristic measuring probe is provided with a light guide body (71), which transmits light emitted from a light source and irradiates a subject to be measured with light, and a guide tube (70), which holds the light guide body (71) such that the light guide body freely rotates about the axis and is freely displaced in the axis direction. The light guide body (71) guides at least two types of light, i.e., measuring light for measuring the optical characteristics of the subject to be measured, and position determining light for measuring the position of the light guide body. On the side surface of the guide tube (70), a mark (M) having the characteristics of transmitting the measuring light and returning only the position determining light to the light guide body is provided.Type: ApplicationFiled: March 3, 2010Publication date: March 8, 2012Applicant: KONICA MINOLTA OPTO, INCInventor: Soh Ohzawa
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Patent number: 8113667Abstract: A projection optical system satisfies a conditional formula: 0.01<{(tan ?f1?tan ?f2)?(tan ?n1?tan ?n2)}·(?2/?1)<0.Type: GrantFiled: February 25, 2008Date of Patent: February 14, 2012Assignee: Konica Minolta Opto, Inc.Inventors: Keiko Yamada, Kohtaro Hayashi, Soh Ohzawa, Masayuki Imaoka
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Publication number: 20120008898Abstract: There is disclosed a probe (50) for directing light to an object to be measured and receiving light returned from the object to be measured, the probe including: an optical path (21) for transmitting light from a light source (10); a mirror member (52) for reflecting the light transmitted through the optical path (21); and a rotational oscillation mechanism (56) for rotatably oscillating the mirror member (52) and a tip end portion of the optical path (21) about a longitudinal axis of the optical path (21); wherein the rotational oscillation mechanism (56) is adapted to perform the rotational oscillation within a range defined by a torsional elasticity limit of the optical path (21). This configuration can provide an optical rotary probe with a simple structure and with high reliability, which is capable of suppressing optical losses and reflection ghosts.Type: ApplicationFiled: September 10, 2009Publication date: January 12, 2012Inventor: Soh Ohzawa
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Publication number: 20110222070Abstract: An optical tomographic image forming method including: splitting low coherence light emitted from a light source is split into a measuring light and a reference light; forming an optical tomographic image of a measured object by detecting an interference light that is obtained by superposing reflected light, reflected from the measured object when the measuring light is irradiated onto the measured object via a condenser lens, and reflected light, reflected from a reference mirror, which is positioned a predetermined length of optical path away from the splitting position, when the reference light is irradiated onto the reference mirror, wherein the method further includes: inputting a refractive index of the measured object; correcting the tomographic image in accordance with the inputted refractive index of the measured object; and outputting the corrected tomographic image.Type: ApplicationFiled: September 4, 2009Publication date: September 15, 2011Inventors: Fumio Nagai, Soh Ohzawa
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Patent number: 7982968Abstract: A variable-power optical system includes, in order from an object side thereof: a first lens group with a negative optical power; a second lens group with a positive optical power; and a third lens group with a negative optical power, where an interval between the first lens group and the second lens group decreases when a power of the variable-power optical system varies from a wide-angle end to a telephoto end. The first lens group comprises a negative lens and a positive lens. The second lens group consists of a positive lens and a negative lens, and includes at least one aspheric surface. The variable-power optical system satisfies the predetermined conditional expressions.Type: GrantFiled: November 27, 2007Date of Patent: July 19, 2011Assignee: Konica Minolta Opto, Inc.Inventors: Keiji Matsusaka, Soh Ohzawa, Yasunari Fukuta
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Patent number: 7922340Abstract: A projection optical system that receives light from a display element to project an image displayed by the display element onto a screen with enlargement at a varying magnification achieved by varying the projection distance to the screen has: a refractive optical system composed of one or more refractive lenses and having a positive optical power; and a concave-surfaced mirror disposed to the screen side of the refractive optical system and having a plane-symmetric reflective surface. The projection optical system includes at least one optical element designed to be movable for focusing. The projection optical system forms an intermediate image between the refractive optical system and the concave-surfaced mirror. Moreover, a prescribed conditional formula is fulfilled.Type: GrantFiled: February 13, 2008Date of Patent: April 12, 2011Assignee: Konica Minolta Opto, Inc.Inventor: Soh Ohzawa
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Patent number: 7869134Abstract: Provided is a microminiaturized zoom optical system capable of sufficiently correcting aberration. The zoom optical system (100) includes a first lens group (101) having a negative optical power, a second lens group (102) having a positive optical power, and a third lens group (103) having a positive or negative optical power in this order from the object side. The zoom optical system is configured in such a manner that the interval between the first lens group (101) and the second lens group (102) is decreased in zooming from the wide angle end to the telephoto end. A positive lens element in the third lens group (103) or in a lens group closer to the image side than the third lens group (103) satisfies the following conditional expression: vp<40 where vp is the minimum value of the Abbe number of the positive lens element.Type: GrantFiled: April 18, 2006Date of Patent: January 11, 2011Assignee: Konica Minolta Opto, Inc.Inventors: Keiji Matsusaka, Soh Ohzawa
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Patent number: 7859764Abstract: A variable-power optical system includes, in order from an object side thereof: a first lens group with a negative optical power; a second lens group with a positive optical power, moving when the power of the variable-power optical system varies; and a third lens group with a positive or negative optical power. The first lens group includes two or more lenses including one positive lens and one negative lens which include at least two or more lenses made of a plastic material. The variable-power optical system satisfies the predetermined conditional expressions relating to is a focal length of the first lens, a focal length of the second lens, a composite focal length of the total optical system, and an image-forming magnification of the second lens group at a telephoto end.Type: GrantFiled: December 6, 2007Date of Patent: December 28, 2010Assignee: Konica Minolta Opto, Inc.Inventors: Yasunari Fukuta, Soh Ohzawa, Keiji Matsusaka
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BODY LIQUID COLLECTING AUXILIARY MEMBER AND BODY LIQUID COLLECTING DEVICE USING THE AUXILIARY MEMBER
Publication number: 20100222701Abstract: Provided is a body liquid collecting device comprising a body liquid collecting auxiliary sheet (9), and a transparent member (12) made integral with the body liquid collecting auxiliary sheet (9) and having a lens (11) for collecting laser beam from a semiconductor laser (4b) such that it is interposed between the body liquid collecting auxiliary sheet (9) and the lens (11), so that the surface of the auxiliary sheet (9) may have its surface positioned at the focal point of the lens (11). As a result, the laser beam can be collected at a predetermined portion (or the focal point portion), so that a micro-hole can be reliably formed with a relatively low laser power.Type: ApplicationFiled: June 27, 2008Publication date: September 2, 2010Applicant: Konica Minolta Opto Inc.Inventors: Soh Ohzawa, Naoki Izumiya, Masaaki Takama, Kenji Konno -
Publication number: 20100118281Abstract: A projection optical system satisfies the following conditional equation: 0.01<{(tan ? f1?tan ? f2)?(tan ? n1?tan ? n2)}·(?2/?1)<0.20.Type: ApplicationFiled: February 25, 2008Publication date: May 13, 2010Applicant: Konica Minolta Opto. Inc.Inventors: Keiko Yamada, Kohtaro Hayashi, Soh Ohzawa, Masayuki Imaoka