Patents by Inventor Eigo Sano
Eigo Sano 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: 10050071Abstract: To obtain an imaging unit, a lens barrel, and a portable terminal which can effectively suppress spring-back of solid-state imaging elements, while facilitating height lowering thereof. An imaging unit includes: a solid-state imaging element; and an imaging lens for forming a subject image on a photoelectric conversion part of the solid-state imaging element. An imaging surface of the solid-state imaging element is curved in a manner that a peripheral side is inclined toward an object side relative to a screen center. The imaging lens constrains the solid-state imaging element to prevent a radius of curvature of the imaging surface from varying. Thus, field curvature, distortion aberration, and comatic aberration are appropriately corrected.Type: GrantFiled: September 29, 2014Date of Patent: August 14, 2018Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATIONInventors: Kazuichiro Itonaga, Eigo Sano, Nobuyoshi Mori, Joji Wada, Atsushi Morimura, Yuichi Takenaga, Takayoshi Hasegawa, Makoto Tsunoda
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Patent number: 9557528Abstract: The present invention provides a compact and high-performance image pickup lens having a fast F-number and capable of suppressing shading by using a curved projection surface. An image pickup lens 10 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive or negative refractive power, a fourth lens L4 having a positive or negative refractive power, and a fifth lens L5 having a negative refractive power. With regard to the fifth lens L5 among these lenses, at least one surface is aspherical. The above-described image pickup lens 10 satisfies a conditional expression (1): ?2.50<f5/f<?0.10 . . . (1) where f5 is a focal length of the fifth lens L5 and f is a focal length of the entire system of the image pickup lens 10.Type: GrantFiled: August 15, 2012Date of Patent: January 31, 2017Assignee: Konica Minolta, Inc.Inventor: Eigo Sano
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Publication number: 20170005125Abstract: To obtain an imaging unit, a lens barrel, and a portable terminal which can effectively suppress spring-back of solid-state imaging elements, while facilitating height lowering thereof. An imaging unit includes: a solid-state imaging element; and an imaging lens for forming a subject image on a photoelectric conversion part of the solid-state imaging element. An imaging surface of the solid-state imaging element is curved in a manner that a peripheral side is inclined toward an object side relative to a screen center. The imaging lens constrains the solid-state imaging element to prevent a radius of curvature of the imaging surface from varying. Thus, field curvature, distortion aberration, and comatic aberration are appropriately corrected.Type: ApplicationFiled: September 29, 2014Publication date: January 5, 2017Inventors: Kazuichiro ITONAGA, Eigo SANO, Nobuyoshi MORI, Joji WADA, Atsushi MORIMURA, Yuichi TAKENAGA, Takayoshi HASEGAWA, Makato TSUNODA
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Patent number: 9310582Abstract: Provided is an image pickup lens that despite being small is favorably corrected for aberrations and has a five element configuration that is wide angle and has a bright F-number also provided is an image pickup device and a portable terminal using the image pickup lens. The image surface side of the fifth lens has an aspherical shape, has an inflection point at a position other than a position that intersects with the light axis, and satisfies the following formulae: ?5.0<(r1+r2)/(r1?r2)??1.0 (1); 0.90<f1/f<1.70 (2); 0.35<?DL13/f<0.55 (3). Provided that r1: curvature radius of the first lens object side surface, r2: curvature radius of the first lens image side surface, f1: focal distance of the first lens, f: focal distance of the entire image pickup lens system, ?DL13: distance on the optical axis from object side surface of the first lens to image side surface of the third lens.Type: GrantFiled: September 10, 2012Date of Patent: April 12, 2016Assignee: Konica Minolta, Inc.Inventors: Eigo Sano, Keiko Yamada
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Patent number: 8917457Abstract: An imaging lens system has, from an object side, at least one positive lens element convex to the object side, a negative lens element, and at least one lens element having an aspherical surface. The positive and negative lens elements are arranged next to each other. The formulae 0.1<Ton/Dopn<7, 0.1<(Rona?Ronb)/(Rona+Ronb)<1.5, and 0.3<Y?/TL<0.Type: GrantFiled: March 22, 2011Date of Patent: December 23, 2014Assignee: Konica Minolta Advanced Layers, Inc.Inventors: Keiji Matsusaka, Hiroaki Tanaka, Eigo Sano
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Publication number: 20140340568Abstract: Provided is an image pickup lens that despite being small is favorably corrected for aberrations and has a five element configuration that is wide angle and has a bright F-number also provided is an image pickup device and a portable terminal using the image pickup lens. The image surface side of the fifth lens has an aspherical shape, has an inflection point at a position other than a position that intersects with the light axis, and satisfies the following formulae: ?5.0<(r1+r2)/(r1?r2)??1.0 (1); 0.90<f1/f<1.70 (2); 0.35<?DL13/f<0.55 (3). Provided that r1: curvature radius of the first lens object side surface, r2: curvature radius of the first lens image side surface, f1: focal distance of the first lens, f: focal distance of the entire image pickup lens system, ?DL13: distance on the optical axis from object side surface of the first lens to image side surface of the third lens.Type: ApplicationFiled: September 10, 2012Publication date: November 20, 2014Inventors: Eigo Sano, Keiko Yamada
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Patent number: 8885270Abstract: A single-focal-length imaging lens system achieves focusing by, while keeping first and third lens groups stationary relative to the image plane, moving a second lens group along the optical axis. The second lens group includes a positive lens element. The third lens group includes an aspherically shaped lens element having an inflection point at a position other than the intersection with the optical axis. The first and second air lenses formed by the intervals between the first and second and between the second and third lens groups have negative and positive refractive powers respectively. The conditional formula 0?|Fi1/Fi2|?|Fm1/Fm2|?10 is fulfilled (Fi1 and Fi2 representing the focal lengths of the first and second air lenses, respectively, when focusing on the infinite object distance; Fm1 and Fm2 representing the focal lengths of the first and second air lenses, respectively, when focusing on the closest object distance).Type: GrantFiled: March 22, 2011Date of Patent: November 11, 2014Assignee: Konica Minolta Advanced Layers, Inc.Inventors: Hiroaki Tanaka, Keiji Matsusaka, Eigo Sano, Maiko Nishida
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Patent number: 8867150Abstract: To provide an image pickup lens with a five-lens configuration in which aberrations are corrected favorably despite its compactness. An image pickup lens 10 includes a first lens L1 having a positive refractive power and having a convex face directed to an object side, a second lens L2 of a meniscus shape having a negative refractive power and having a concave face directed to an image side, a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power and having a convex face directed to the image side, and a fifth lens L5 having a negative refractive power and having a concave face directed to the image side, in this order from the object side. Here, the focal length of the fifth lens, the focal length of the entire system of the image pickup lens, and an air separation on an optical axis between the fourth lens and the fifth lens satisfy predetermined conditions.Type: GrantFiled: April 12, 2011Date of Patent: October 21, 2014Assignee: Konica Minolta Advanced Layers, Inc.Inventor: Eigo Sano
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Patent number: 8842374Abstract: Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.Type: GrantFiled: December 21, 2012Date of Patent: September 23, 2014Assignee: Konica Minolta Opto, Inc.Inventors: Eigo Sano, Yuichi Ozaki
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Publication number: 20140209786Abstract: The present invention provides a compact and high-performance image pickup lens having a fast F-number and capable of suppressing shading by using a curved projection surface. An image pickup lens 10 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive or negative refractive power, a fourth lens L4 having a positive or negative refractive power, and a fifth lens L5 having a negative refractive power. With regard to the fifth lens L5 among these lenses, at least one surface is aspherical. The above-described image pickup lens 10 satisfies a conditional expression (1): ?2.50<f5/f<?0.10 . . . (1) where f5 is a focal length of the fifth lens L5 and f is a focal length of the entire system of the image pickup lens 10.Type: ApplicationFiled: August 15, 2012Publication date: July 31, 2014Inventor: Eigo Sano
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Patent number: 8792184Abstract: An image-capturing lens includes, in order from an object side: a meniscus-shaped first lens which has positive power near an optical axis; a second lens which has positive power near the optical axis and has negative power in the periphery of the second lens; and a meniscus-shaped third lens. The image-capturing lens satisfies the following conditional formulas: TL/f<1.10, 2.00<(r2+r1)/(r2?r1)<4.00, and 0.07<D2/f<0.19, where TL: the air-converted distance from the object-side surface of the first lens to the image-side surface thereof, f: the focal length of the entire system, r2: the radius of curvature of the first lens on the image side thereof, r1: the radius of curvature of the first lens on the object side thereof, D2: the distance between the first lens and the second lens.Type: GrantFiled: December 22, 2010Date of Patent: July 29, 2014Assignee: Konica Minolta Advanced Layers, Inc.Inventors: Kazuki Matsui, Eigo Sano, Yasunari Fukuta
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Patent number: 8786961Abstract: There is provided an image pickup lens having a 6-element structure which has a small size and a sufficiently lens speed of F/2 or less and in which various aberrations are corrected favorably.Type: GrantFiled: July 7, 2011Date of Patent: July 22, 2014Assignee: Konica Minolta Advanced Layers, Inc.Inventor: Eigo Sano
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Patent number: 8780458Abstract: Provided is an imaging lens, and also provided are an image pickup apparatus and a portable terminal both equipped with the imaging lens. The imaging lens includes in order: a positive first lens having a convex object-side surface; a negative second lens having a concave image-side surface; a negative meniscus-shaped third lens having a convex object-side surface; a positive fourth lens having a convex image-side surface; and a negative fifth lens having a concave image-side surface. The image-side surface of the fifth lens is aspherical and has an inflection point at a position of the optical axis. The third and the fourth lenses are integrally moved to focus, and the following conditional relation is satisfied: 0.75<f34/f<1.30, where f34 is the combined focal length of the third lens and the fourth lens, and f is the focal length of the entire system of the imaging lens.Type: GrantFiled: December 22, 2010Date of Patent: July 15, 2014Assignee: Konica Minolta Advanced Layers, Inc.Inventors: Eigo Sano, Maiko Nishida
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Publication number: 20140139711Abstract: An image pickup lens 10 includes a first lens L1, a second lens L2, and a third lens L3. An image pickup surface I of a solid-state image sensor 51 is curved into the shape of a shallow concave spherical surface. By forming an image side surface 3b of the third lens L3, which is the lens nearest to the image side, into an aspherical shape, it is possible to make a curvature of field suitable to the curved image pickup surface I while securing excellent telecentric characteristics. The above image pickup lens 10 satisfies conditional expression (1) where THID is a thickness of an outermost periphery PA of the lens L3 nearest to the image side along an optical axis direction AX and THIC is a thickness of the lens L3 nearest to the image side on the optical axis AX.Type: ApplicationFiled: July 11, 2012Publication date: May 22, 2014Inventor: Eigo Sano
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Patent number: 8724005Abstract: An image pickup lens includes: a first lens with a positive power, including a convex surface facing the object side; an aperture stop; a second lens with a negative power, including a concave surface facing the image side; a third lens with a positive or negative power; a fourth lens with a positive power, including a convex surface facing the image side; and a fifth lens with a negative power, including a concave surface facing the image side. The surface of the fifth lens facing the image side is an aspheric surface and includes an inflection point. The image pickup lens satisfies the predetermined condition relating to a focal length of the first lens.Type: GrantFiled: April 17, 2013Date of Patent: May 13, 2014Assignee: Konica Minolta Opto, Inc.Inventor: Eigo Sano
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Patent number: 8659838Abstract: Provided is an image pickup lens that forms an image on an image pickup element with light from a subject. In the image pickup lens, a lens that is disposed on an image pickup element side is fixed in position, and a focusing lens group having a plurality of lenses including a lens closest to the subject is moved in an optical axis direction, thereby performing focusing.Type: GrantFiled: March 11, 2010Date of Patent: February 25, 2014Assignee: Konica Minolta Opto, Inc.Inventors: Hirotoshi Konishi, Taizo Wakimura, Satoshi Onishi, Keiji Matsusaka, Mitsuhiko Morita, Eigo Sano, Hiroaki Tanaka
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Patent number: 8654241Abstract: An image pickup lens includes: a first lens with a positive power, including a convex surface facing the object side; an aperture stop; a second lens with a negative power, including a concave surface facing the image side; a third lens with a positive or negative power; a fourth lens with a positive power, including a convex surface facing the image side; and a fifth lens with a negative power, including a concave surface facing the image side. The surface of the fifth lens facing the image side is an aspheric surface and includes an inflection point. The image pickup lens satisfies the predetermined condition relating to a focal length of the first lens.Type: GrantFiled: November 30, 2012Date of Patent: February 18, 2014Assignee: Konica Minolta Opto, Inc.Inventor: Eigo Sano
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Patent number: 8654242Abstract: Provided is a single-focus optical system which is configured, in order from the object side to the image side, of a first to third lens groups and in which the first lens group and the third lens group are fixed with respect to a predetermined imaging surface, and the second lens group is moved in the optical axis direction to focus, wherein the first lens group comprises at least one positive lens and at least one negative lens, the second lens group comprises at least one positive lens, the third lens group comprises at least one lens having at least one aspheric surface and having a positive optical power at a peripheral portion thereof and 5<|?v1|<70 is satisfied where ?v1 is a maximum value of the Abbe number difference between the positive lens and the negative lens in the first lens group.Type: GrantFiled: August 25, 2010Date of Patent: February 18, 2014Assignee: Konica Minolta Opto, Inc.Inventors: Keiji Matsusaka, Taizo Wakimura, Masashi Isono, Eigo Sano, Keiko Yamada, Hiroaki Tanaka
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Patent number: 8619175Abstract: Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.Type: GrantFiled: December 21, 2012Date of Patent: December 31, 2013Assignee: Konica Minolta Opto, Inc.Inventors: Eigo Sano, Yuichi Ozaki
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Patent number: 8605195Abstract: An image pickup lens comprises a first lens (L1) having a positive refractive power, an aperture stop (s3), a second lens (L2) having a negative refractive power and having a concave surface facing the image side, a third lens (L3) having a positive refractive power, and a fourth lens (L4) having a negative refractive power and having a concave surface facing the image side. The image pickup lens satisfies predetermined formulae.Type: GrantFiled: May 26, 2010Date of Patent: December 10, 2013Assignee: Konica Minolta Opto, Inc.Inventors: Hiroaki Tanaka, Keiji Matsusaka, Eigo Sano