Four Components Patents (Class 359/771)
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Patent number: 12174345Abstract: An optical lens assembly, sequentially comprising from an object side to an image side: a first lens; a second lens having positive refractive power, the object side surface of the second lens being concave at the circumference, and the image side surface of the second lens being convex at the circumference; a third lens; and a fourth lens having positive refractive power, the image side surface of the fourth lens being concave at the optical axis, the object side surface and the image side surface of the fourth lens being aspherical, and at least one of the object side surface and the image side surface of the fourth lens having an inflection point. The optical lens assembly satisfies relationship: TT/f<1.3, TT is the distance on the optical axis from the object side surface of the first lens to the image side surface of the fourth lens, and f is effective focal length.Type: GrantFiled: June 19, 2019Date of Patent: December 24, 2024Assignee: JIANGXI JINGCHAO OPTICAL CO., LTD.Inventors: Jinhua Zou, Binbin Liu, Hairong Zou
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Patent number: 12158594Abstract: Embodiments provide an optical imaging system, which includes a first aberration compensation lens group, a polarizer, an optical imaging module, and a display, where the display, the first aberration compensation lens group, the polarizer, and the optical imaging module are sequentially arranged. The display is configured to emit non-polarized light. The first aberration compensation lens group is configured to perform aberration compensation on the non-polarized light emitted by the display. The polarizer is configured to transmit polarized light in non-polarized light that is obtained after the aberration compensation and that is emitted by the first aberration compensation lens group. The optical imaging module is configured to: fold an optical path, and emit the polarized light. The embodiments of this application are applied to an optical imaging process.Type: GrantFiled: October 18, 2020Date of Patent: December 3, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Wangchao Ruan, Jie Dai
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Patent number: 11927724Abstract: An optical imaging system is provided. The optical imaging system has a first lens, a second lens, a third lens, and a fourth lens disposed in order from an object-side to an image-side. The optical imaging system satisfies the following conditional expressions: F No.?1.5, 0.5<EPD/TTL<0.7, where EPD is an entrance pupil diameter, and TTL is a distance from an object-side surface of the first lens to an imaging plane.Type: GrantFiled: July 6, 2021Date of Patent: March 12, 2024Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Yong Joo Jo, Young Suk Kang
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Patent number: 11333848Abstract: A four-piece optical lens system includes, in order from the object side to the image side: a stop; a first lens element with a positive refractive power; a second lens element with a negative refractive power; a third lens element with a positive refractive power; a fourth lens element with a negative refractive power, wherein a focal length of the first lens element and the second lens element combined is f12, a focal length of the third lens element is 13, and they satisfy the relation: 0.6<f12/f3<1.6, such arrangements not only can be applied to a portable electronic product, but also has a long focal length, high pixel and low height. Moreover, the resolution can be improved evidently.Type: GrantFiled: January 6, 2020Date of Patent: May 17, 2022Assignee: NEWMAX TECHNOLOGY CO., LTD.Inventor: Kun-Rui Wu
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Patent number: 11327278Abstract: A lens system is configured to form an image on an imaging element having a quadrilateral shape disposed on an optical axis, and includes a first free-curved lens being asymmetrical with respect to the optical axis. A free-curved surface of the first free-curved lens has negative refractive power at an intersection point between a circle separated from the optical axis by a length having a predetermined ratio with respect to a minimum image height and a first surface passing through the optical axis and parallel to longer sides of the imaging element, and positive refractive power at an intersection point between a circle separated from the optical axis by a length having the predetermined ratio with respect to the minimum image height and a second surface passing through the optical axis and parallel to shorter sides of the imaging element. The predetermined ratio ranges from 40% to 80% inclusive.Type: GrantFiled: December 9, 2019Date of Patent: May 10, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Yoshio Matsumura
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Patent number: 11249275Abstract: A plastic lens barrel includes an object-end portion, an image-end portion and a tube portion. The object-end portion has an object-end outer surface, an object-end opening and an object-end inner surface, wherein one end of the object-end inner surface is connected to the object-end outer surface and surrounds the object-end opening. The image-end portion has an image-end outer surface and an image-end opening. The tube portion connected object-end portion and the image-end portion, and includes a plurality of tube inner surfaces. At least one of the tube inner surfaces and the object-end inner surface includes a plurality of annular convex structures. Each of the annular convex structures surrounds a central axis of the plastic lens barrel. A cross-sectional plane of each annular convex structure passing through the central axis includes a peak point and two valley point.Type: GrantFiled: October 17, 2019Date of Patent: February 15, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Ming-Shun Chang, Ming-Ta Chou, Wei-Hung Weng
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Patent number: 11204481Abstract: An optical system includes a first lens unit having positive refractive power, a second lens unit having positive refractive power that is moved during focusing, and a third lens unit having negative refractive power that are arranged in order from an object side to an image side. A distance between adjacent lens units on an optical axis of the optical system is varied during focusing. The first lens unit consists of a diffractive optical element and a negative lens that are arranged in order from the object side to the image side. The negative lens has a meniscus shape in which a concave surface faces the object side.Type: GrantFiled: May 2, 2019Date of Patent: December 21, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Takayoshi Yokoyama
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Patent number: 10935771Abstract: The present invention relates to an optical unit consisting of four lens groups, i.e., a first lens group, a second lens group, a third lens group and a fourth lens group, which are arranged in order from an object side toward an image side surface side, wherein at least the first, second and third lens group comprise at least two lens elements, wherein said at least two lens elements within each lens group have different optical properties, wherein no glass substrate is present in at least one of the first lens group, the second lens group and the third lens group.Type: GrantFiled: January 25, 2019Date of Patent: March 2, 2021Assignee: Anteryon International B.V.Inventors: Edwin Maria Wolterink, Yelena Vladimirovna Shulepova
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Patent number: 10890757Abstract: An optical imaging lens includes a first lens element, a second lens element, a third lens element, and a fourth lens element from an object side to an image side in order along an optical axis. The first lens element to the fourth lens element each include an object-side surface facing the object side and allowing imaging rays to pass through and an image-side surface facing the image side and allowing the imaging rays to pass through. The object-side surface of the second lens element has a concave portion in a vicinity of the optical axis. The image-side surface of the second lens element has a convex portion in a vicinity of a periphery of the second lens element. The object-side surface of the third lens element has a concave portion in a vicinity of a periphery of the third lens element. The fourth lens element has negative refracting power.Type: GrantFiled: September 22, 2017Date of Patent: January 12, 2021Assignee: GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD.Inventors: Matthew Bone, Chuanbo Dong, Xiaohui Zhang
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Patent number: 10746974Abstract: An optical system includes a positive lens G1 arranged closest to the object side and a positive lens G2 arranged closest to the object side among positive lenses at the image side of the positive lens G1. The optical system satisfies a predetermined condition.Type: GrantFiled: September 14, 2018Date of Patent: August 18, 2020Assignee: CANON KABUSHIKI KAISHAInventor: Shinichiro Saito
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Patent number: 10725267Abstract: A four-piece optical lens for capturing image and a four-piece optical module for capturing image are provided. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; and a fourth lens with positive refractive power; and at least one of the image-side surface and object-side surface of each of the four lens elements are aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.Type: GrantFiled: January 4, 2016Date of Patent: July 28, 2020Assignee: ABILITY OPTO-ELECTRONICS TECHNOLOGY CO. LTD.Inventors: Po-Jui Liao, Hung-Wen Lee, Ying Jung Chen, Bo Guang Jhang, Kuo-Yu Liao, Yao Wei Liu, Yeong-Ming Chang
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Patent number: 10209485Abstract: There is provided an imaging lens which is low-profile, has a small f-value, and obtains wide field of view which aberrations are properly corrected, in order from an object side to an image side, comprising a first lens having positive refractive power and a convex surface on an object side near an optical axis, a second lens having negative refractive power and a concave surface on the object side near the optical axis, a third lens having positive refractive power and a convex surface on the image side as a double-sided aspheric lens and a fourth lens having negative refractive power and a concave surface on an image side near the optical axis as a double-sided aspheric lens, wherein a conditional expression (1) below is satisfied: 8.5<ih/f<1.0??(1) where f denotes the focal length of the overall optical system, and ih denotes maximum image height.Type: GrantFiled: December 22, 2016Date of Patent: February 19, 2019Assignee: KANTATSU CO., LTD.Inventors: Shingo Yuza, Kenichi Kamada
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Patent number: 10067316Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises six lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.Type: GrantFiled: November 2, 2015Date of Patent: September 4, 2018Assignee: GeniuS Electronic Optical (Xiamen) Co., Ltd.Inventors: Shih Han Chen, Junguang Zhang, Feng Chen
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Patent number: 10007098Abstract: Systems and methods are provided for optical systems and methods. A compact optical system can include a fore optical assembly, an aft optical assembly, and a phase corrector plate located between the fore optical assembly and the aft optical assembly. The phase corrector plate can have a substantially flat first surface and a set of high order aspherical coefficients on the second surface. In one aspect, the fore optical assembly and the aft optical assembly comprise achromatic doublets, apochromatic triplets, or a combination of elements. In another aspect, a surface of the phase corrector plate is located near or at an optical stop.Type: GrantFiled: December 5, 2013Date of Patent: June 26, 2018Assignee: Northrop Grumman Systems CorporationInventor: Yaujen Wang
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Patent number: 9897779Abstract: An optical imaging lens assembly that may have three lens components. All lens components may have positive refractive power. The first object side lens component has a plano object side surface. The remaining refracting surfaces may be aspheric. The second and third lens components may have a meniscus form. All three lens components may have the same index of refraction and Abbe number.Type: GrantFiled: February 23, 2016Date of Patent: February 20, 2018Assignee: APPLE INC.Inventor: Yalan Mao
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Patent number: 9491348Abstract: An imaging lens includes a first lens group having positive refractive power, a second lens group having negative refractive power, and a third lens group having positive refractive power. The first to third lens groups are arranged in order from an object side toward an image side. A focusing operation is performed through allowing the second lens group to travel along an optical axis. The following conditional expressions are satisfied, 0.40<Da/TL<0.65??(1) 0.90<f3/f<3.50??(2) where Da is an on-axial distance from an object-sided surface of the second lens group to an image-sided surface of the third lens group in an infinite focus state, TL is an on-axial total length of the imaging lens, f3 is a focal length of the third lens group, and f is a total focal length of the imaging lens in the infinite focus state.Type: GrantFiled: August 21, 2014Date of Patent: November 8, 2016Assignee: Sony CorporationInventors: Yonghua Chen, Naoki Miyagawa
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Patent number: 9329361Abstract: An optical imaging lens assembly includes an aperture stop and an optical assembly, the optical assembly includes, in order from the object side to the image side: a first lens element with a positive refractive power; a second lens element with a negative refractive power; a third lens element with a positive refractive power; a fourth lens element with a refractive power; wherein a radius of curvature of an object-side surface of the second lens element is R3, a radius of curvature of an image-side surface of the second lens element is R4, a radius of curvature of an object-side surface of the third lens element is R5, a radius of curvature of an image-side surface of the third lens element is R6, and the following conditions are satisfied: ?0.62<(R3?R4)/(R3+R4)<?0.51; 0.54<(R5?R6)/(R5+R6)<0.67.Type: GrantFiled: January 27, 2015Date of Patent: May 3, 2016Assignee: Glory Science Co., Ltd.Inventors: Kun-Ti Liu, Feng-Chao Chung
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Patent number: 9217845Abstract: An imaging lens includes first, second, third, and fourth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power, and a convex object-side surface. The second lens element has a negative refractive power, and an image-side surface with a convex portion. The third lens element has an object-side surface with a concave portion. The fourth lens element has an object-side surface with a convex portion, and an image-side surface with a convex portion and a concave portion.Type: GrantFiled: January 10, 2013Date of Patent: December 22, 2015Assignee: GENIUS ELECTRONIC OPTICAL CO., LTD.Inventors: Kuo-Wen Chang, Poche Lee, Wei-Yu Lo
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Patent number: 9213166Abstract: An imaging lens includes first, second, third, and fourth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power, and a convex object-side surface. The second lens element has a negative refractive power, and an image-side surface with a convex portion. The third lens element has a convex image-side surface. The fourth lens element has an object-side surface with a convex portion, and a curved image-side surface with a concave portion and a convex portion.Type: GrantFiled: January 10, 2013Date of Patent: December 15, 2015Assignee: GENIUS ELECTRONIC OPTICAL CO., LTD.Inventors: Kuo-Wen Chang, Poche Lee, Wei-Yu Lo
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Patent number: 9036279Abstract: An imaging lens provided with a negative first lens group and a positive second lens group disposed in order from the object side. The first lens group is composed of a first group first lens which is a negative biconcave single lens, and the second lens group is composed of a positive second group first lens, an aperture stop, a positive second group second lens, and a negative second group third lens disposed in order from the object side. The second group second lens and second group third lens are cemented together to form a cemented lens. The imaging lens is configured to satisfy a conditional expression (3) 0.9<dt3/f<1.3, and further configured to satisfy conditional expression (1) 31<?d2<55 or (1?): 35<?d2 and a conditional expression (2): ?10<?d1??d2<25.Type: GrantFiled: January 13, 2014Date of Patent: May 19, 2015Assignee: FUJIFILM CORPORATIONInventors: Katsuhisa Tsutsumi, Yoshiaki Ishii
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Patent number: 9013811Abstract: An imaging lens formed of 4 lenses, in which a negative first lens having a meniscus shape with a convex surface on the object side, a biconvex positive second lens, a negative third lens having a concave surface on the image side, and a positive fourth lens having a convex surface on the object side, arranged in order from the object side, and the imaging lens satisfies conditional expressions (1): L12/f<0.82; (2): 2.3<L12×R2F2/f2<10.0; (5): ?1.3<f1/f<?0.9; and (6): 48<v1 simultaneously, where, L12 is the air equivalent distance between the first lens and the second lens, f is the focal length of the entire lens system, R2F is the radius of curvature of the object side lens surface of the second lens, f1 is the focal length of the first lens, and v1 is the Abbe number of the first lens with respect to the d-line.Type: GrantFiled: January 8, 2014Date of Patent: April 21, 2015Assignee: FUJIFILM CorporationInventor: Masao Mori
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Patent number: 8982482Abstract: The wide-angle optical system of the invention comprises, in order from its object side, a first lens group having negative refracting power and a second lens group having positive refracting power. The second lens group comprises, in order from the object side, a first cemented doublet lens, an aperture stop, a second cemented doublet lens and a first double-convex lens. The widest separation among axial air separations except a back focus provides an axial space for receiving the aperture stop. The optical system is divided into the first lens group and the second lens group with the second widest air separation as a boundary. Focusing is implemented by letting the whole optical system out. The optical system satisfies Condition (1). 1.4?nd?1.8??(1) Here nd is the d-line refractive index of the first double-convex lens.Type: GrantFiled: July 26, 2011Date of Patent: March 17, 2015Assignee: Olympus CorporationInventor: Ryosuke Uemura
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Patent number: 8953263Abstract: An optical unit and an image pickup unit are provided that allow a full angular field to be increased in spite of small size and low cost. An image pickup lens 100 has a first lens 111 with a positive power, a second lens 113 with a positive power, a third lens 114 with a positive power, and a fourth lens 115 with a negative power that are arranged in order from an object side OBJS toward an image surface side, that are arranged in order from the object side toward the image surface side.Type: GrantFiled: January 24, 2012Date of Patent: February 10, 2015Assignee: Sony CorporationInventor: Tomohiko Baba
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Publication number: 20150036048Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises four lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements and designing an equation, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.Type: ApplicationFiled: November 8, 2013Publication date: February 5, 2015Applicant: GENIUS ELECTRONIC OPTICAL CO., LTD.Inventors: Wang-Ting Ho, Feng Chen, Guanning Huang
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Patent number: 8947789Abstract: An imaging lens has a negative first-lens, a first-cemented-lens of a second-lens and a third-lens, a stop, a positive fourth-lens, and a second-cemented-lens of a fifth-lens and a sixth-lens in this order from an object-side. The first-lens has a plano-concave or meniscus shape with a concave image-side surface. One of the second-lens and the third-lens is a positive lens and the other one is a negative lens. An object-side surface of the fourth-lens is a flat surface or a surface with a curvature radius having an absolute value greater than that of its image-side surface. One of the fifth-lens and the sixth-lens is a positive lens and the other one is a negative lens.Type: GrantFiled: September 17, 2013Date of Patent: February 3, 2015Assignee: FUJIFILM CorporationInventor: Hitoshi Miyano
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Patent number: 8947793Abstract: An inner focus lens system comprises, in order from an object side to an image side, a first lens unit, an aperture stop, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, and a fourth lens unit having a positive refractive power. The first lens unit has at least one negative lens and at least one positive lens, the second lens unit has at least one negative lens and at least one positive lens, the third lens unit has at least one negative lens, and the fourth lens unit has at least one positive lens. When focusing on an object at a short distance from an object at infinity, the third lens unit moves to lengthen a distance to the second lens unit and to shorten a distance to the fourth lens unit.Type: GrantFiled: December 7, 2012Date of Patent: February 3, 2015Assignee: Olympus Imaging Corp.Inventor: Masaru Morooka
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Patent number: 8908296Abstract: A four element lens system for use with an imaging sensor includes first, second, third, and fourth lens elements and an optical filter that are arranged sequentially in order from an object side to an imaging side. The lens elements are coated with an anti-reflective film. The lens system further includes an optical filter that is disposed at a distance from the imaging sensor. The lens elements are relatively positioned to each other to satisfy specific conditions. The lens elements further include thickness to diameters ratios that satisfy specific conditions.Type: GrantFiled: February 26, 2014Date of Patent: December 9, 2014Assignee: Genius Electronic Optical Co., Ltd.Inventor: Shihhan Chen
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Patent number: 8902518Abstract: An optical device is to be disposed between a test screen and a test camera that captures an image on the test screen through the optical device. The optical device includes first, second, third and fourth lenses arranged from a camera side to a screen side in the given order. The first lens has a shape factor ranging from ?10 to 5, the second lens is a positive lens and has a shape factor ranging from ?15 to 2, the third lens is a positive lens and has a shape factor ranging from ?30 to 1, and the fourth lens is a positive lens and has a shape factor ranging from ?30 to 1. A ratio of a focal length of the optical device to that of the test camera ranges from 1 to 80.Type: GrantFiled: February 8, 2013Date of Patent: December 2, 2014Assignee: National Chiao Tung UniversityInventor: Jui-Wen Pan
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Patent number: 8896937Abstract: An image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with positive refractive power has a convex object-side surface in a paraxial region thereof and a convex image-side surface in a paraxial region thereof. The second lens element with negative refractive power has a concave object-side surface in a paraxial region thereof and a convex image-side surface in a paraxial region thereof. The third lens element with positive refractive power has a concave object-side surface in a paraxial region thereof and a convex image-side surface in a paraxial region thereof. The fourth lens element with refractive power has a concave image-side surface in a paraxial region thereof. The image capturing lens assembly has a total of four lens elements with refractive power.Type: GrantFiled: September 4, 2013Date of Patent: November 25, 2014Assignee: Largan Precision Co., Ltd.Inventors: Chun-Che Hsueh, Wei-Yu Chen
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Patent number: 8873155Abstract: A zoom lens includes first to third lens units having positive, negative, and positive refractive power, respectively, and a rear lens group having positive refractive power. An aperture stop is arranged between a lens surface of the second lens unit closest to the image side and a lens surface of the third lens unit closest to the image side. The third lens unit includes first and second positive lenses each including an aspheric surface, and a negative lens. In the third lens unit, a refractive index of the first positive lens, and an Abbe number and relative partial dispersion of the second positive lens are appropriately set.Type: GrantFiled: July 30, 2013Date of Patent: October 28, 2014Assignee: Canon Kabushiki KaishaInventor: Tomonori Kimura
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Patent number: 8858099Abstract: An anamorphic objective is provided for imaging an object onto an image acquisition unit. The anamorphic objective has at least one first plane of symmetry and at least one second plane of symmetry. The first plane of symmetry and the second plane of symmetry are oriented perpendicular to one another. The first plane of symmetry and the second plane of symmetry intersect and have a straight line of intersection (intersection line). A first objective section followed by a second objective section are arranged. A diaphragm is arranged between the first objective section and the second objective section. A first anamorphic optical element is arranged in the first objective section. A second anamorphic optical element is arranged in the second objective section. The anamorphic objective fulfills specified conditions and is suitable for generating a stigmatic imaging of the object on the image acquisition unit.Type: GrantFiled: June 14, 2012Date of Patent: October 14, 2014Assignee: Carl Zeiss AGInventors: Aurelian Dodoc, Christian Bannert, Vladan Blahnik, Holger Sehr
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Patent number: 8848291Abstract: A fixed focus lens includes an M group that is disposed at a center of the optical system and has a positive refractive power; an F group that is disposed farther on the image plane side than the M group, has a negative refractive power, and is moved along the optical axis during focusing; a V group that is disposed farther on the object side than the M group, has a negative refractive index, and is moved in a direction orthogonal to the optical axis during vibration control; and an FC group that is disposed farther on the object side than the V group and has a positive refractive power. The V group is configured by a single lens element, and during focusing, at least the FC group and the M group are fixed.Type: GrantFiled: January 9, 2012Date of Patent: September 30, 2014Assignee: Tamron Co., Ltd.Inventor: Nobuyuki Adachi
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Publication number: 20140285910Abstract: An imaging lens includes plastic-made first, second, third, and fourth lens elements arranged in the given order from an object side to an imaging side. The first lens element has a positive focusing power and is biconvex. The second lens element has a negative focusing power, is biconcave, and has an abbe number not greater than 30. The third lens element has a positive focusing power and has a convex imaging-side surface facing toward the imaging side. The fourth lens element has an imaging-side surface formed with a concave area in a vicinity of an optical axis of the fourth lens element. The imaging lens further includes an aperture stop disposed between the first and second lens elements.Type: ApplicationFiled: June 11, 2014Publication date: September 25, 2014Inventors: Poche Lee, Kuo-Wen Chang, Long-Sheng Liao
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Patent number: 8837060Abstract: Image capture lens modules and wafer level packaged image capture devices are presented. The image capture lens module includes a compound lens with a first lens element and a second lens element molded on both sides of a substrate, and a field stop disposed at an interface between the first lens element and the substrate or at an interface between the second lens element and the substrate, wherein the field stop is a coating layer with a polygonal transparent area.Type: GrantFiled: February 25, 2011Date of Patent: September 16, 2014Assignees: Visera Technologies Company Limited, Omnivision Technologies, Inc.Inventors: Chun-Chi Lin, Jau-Jan Deng, Wei-Ping Chen
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Publication number: 20140253983Abstract: An image reading lens which reads an original image includes a front group lens system on an object side, and a back group lens system on an image side, the front group lens system including three lenses having two positive lenses and a negative lens, and the back group lens system including a plastic negative lens.Type: ApplicationFiled: March 11, 2014Publication date: September 11, 2014Inventor: Takuya NAGANO
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Patent number: 8804252Abstract: An optical image capturing lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element has positive refractive power, wherein an object-side surface and an image-side surface of the third lens element are aspheric. The fourth lens element with refractive power is made of plastic material and has a concave image-side surface, wherein an object-side surface and the image-side surface of the fourth lens element are aspheric, and the fourth lens element has at least one inflection point formed on at least one of the object-side surface and the image-side surface thereof.Type: GrantFiled: August 29, 2012Date of Patent: August 12, 2014Assignee: Largan Precision Co., Ltd.Inventors: Dung-Yi Hsieh, Hsin-Hsuan Huang
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Patent number: 8792188Abstract: An imaging lens includes first, second, third, and fourth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power. The second lens element has a negative refractive power, and concave object-side and image-side surfaces. The third lens element has a positive refractive power. The fourth lens has a curved object-side surface with a convex portion and a concave portion. The imaging lens satisfies AAG/CT3?1.3, where AAG is a sum of distances between any adjacent two of the lens elements, and CT3 is a thickness of the third lens element.Type: GrantFiled: March 13, 2013Date of Patent: July 29, 2014Assignee: GeniuS Electronic Optical Co., Ltd.Inventors: Shih-Han Chen, Feng Chen, Guan-Ning Huang
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Patent number: 8773772Abstract: A lens optical system includes first, second, third, and fourth lenses that are arranged between an object and an image sensor, in order from an object side, wherein the first lens has positive refractive power and an incident surface that is convex toward the object, the second lens has negative refractive power and both surfaces of which are concave, the third lens has positive refractive power and a meniscus shape that is convex toward the image sensor, and the fourth lens has negative refractive power and at least one of an incident surface and an exit surface of which is an aspherical surface, wherein the system satisfies the inequality, 3.0<TTL/BL<3.4, wherein TTL is a distance from the incident surface of the first lens to the image sensor and BL is a distance from the exit surface of the fourth lens to the image sensor.Type: GrantFiled: August 17, 2012Date of Patent: July 8, 2014Assignee: Kolen Co., Ltd.Inventors: Chi Ho An, Pil Sun Jung, Jae Hoon Cho, Ji Eun Kim, Chan Goo Kang
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Publication number: 20140184871Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises four lens elements positioned sequentially from an object side to an image side. Though controlling the convex or concave shape of the surfaces, the refraction power and/or the ratio among the parameters of the lens element(s), the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.Type: ApplicationFiled: March 19, 2013Publication date: July 3, 2014Applicant: Genius Electronic Optical Co., Ltd.Inventors: Shih-Han CHEN, Chia-Cheng LIN, Zheng-Chao YUAN, Chien Jui LIN
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Publication number: 20140184872Abstract: An imaging lens includes first, second, third, and fourth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power, and both of the object-side and image-side surfaces thereof have a convex portion near an optical axis of the imaging lens. The object-side and image-side surfaces of the second lens element respectively have a convex portion and a concave portion near the optical axis. The fourth lens has a negative refractive power, and the object-side surface thereof has a concave portion near the optical axis. The imaging lens satisfies EFL/CT1?5.3, where EFL is an effective focal length of the imaging lens, and CT1 is a thickness of the first lens element.Type: ApplicationFiled: May 10, 2013Publication date: July 3, 2014Applicant: Genius Electronic Optical Co., Ltd.Inventors: Wang-Ting Ho, Shih-Han Chen, Jun-Guang Zhang, Yi-Ta Chiang
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Publication number: 20140177078Abstract: A four element lens system for use with an imaging sensor includes first, second, third, and fourth lens elements and an optical filter that are arranged sequentially in order from an object side to an imaging side. The lens elements are coated with an anti-reflective film. The lens system further includes an optical filter that is disposed at a distance from the imaging sensor. The lens elements are relatively positioned to each other to satisfy specific conditions. The lens elements further include thickness to diameters ratios that satisfy specific conditions.Type: ApplicationFiled: February 26, 2014Publication date: June 26, 2014Applicant: Genius Electronic Optical Co., Ltd.Inventor: Shihhan Chen
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Patent number: 8730590Abstract: This disclosure provides an image capturing lens system, in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface; a second lens element with positive refractive power; a third lens element with positive refractive power; and a fourth lens element with positive refractive power having a convex object-side surface, a concave at a paraxial region and convex at a peripheral region image-side surface, and both of the object-side and image-side surfaces thereof being aspheric; wherein the lens elements of the image capturing lens system with refractive power are the first lens element, the second lens element, the third lens element and the fourth lens element.Type: GrantFiled: January 16, 2013Date of Patent: May 20, 2014Assignee: Largan Precision Co., Ltd.Inventors: Tsung-Han Tsai, Chun-Che Hsueh, Wei-Yu Chen
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Patent number: 8730589Abstract: An image lens, in order from an object side to an image side thereof, includes a first lens including a first surface and a second surface, a second lens including a third surface and a fourth surface, a third lens including a fifth surface and a sixth surface, a fourth lens including a seventh surface and a eighth surface, and an image plane. The image lens satisfies the following formulas: D/TTL>1.11; D/L>1.13; Z/Y>0.076; wherein D is the maximum image diameter of the image plane; TTL is a total length of the image lens; L is a distance from an outermost edge of the eighth surface to an optical axis of the image lens; Z is a distance from a central point of the sixth surface to an outermost edge of the sixth surface; and Y is a distance from the outermost edge of the sixth surface to the optical axis.Type: GrantFiled: August 15, 2012Date of Patent: May 20, 2014Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Chun-Cheng Ko
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Publication number: 20140118852Abstract: A lens unit may include at least four lens groups and a tube-shaped holder holding the lens groups. The tube-shaped holder is provided with a second lens group holding part provided with a protruded part surrounding an outer peripheral end part of the second lens group through a gap space and the protruded part is provided with a caulked part which is deformed so as to cover the outer peripheral end part from the object side. The protruded part may be provided with a thick portion and a thin portion extended to the front side from the thick portion and the thin portion is caulked by being plastically deformed to be the caulked part. After the second lens group is mounted on an inner side to the protruded part, the position of the second lens group is adjusted and then a caulked part is formed.Type: ApplicationFiled: October 30, 2013Publication date: May 1, 2014Applicant: Nidec Sankyo CorporationInventors: Tadashi Komiyama, Toshio Shirotori
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Patent number: 8711493Abstract: A four element lens system for use with an imaging sensor includes first, second, third, and fourth lens elements and an optical filter that are arranged sequentially in order from an object side to an imaging side. The lens elements are coated with an anti-reflective film. The lens system further includes an optical filter that is disposed at a distance from the imaging sensor. The lens elements are relatively positioned to each other to satisfy specific conditions. The lens elements further include thickness to diameters ratios that satisfy specific conditions.Type: GrantFiled: February 1, 2013Date of Patent: April 29, 2014Assignee: Genius Electronic Optical Co., Ltd.Inventor: Shihhan Chen
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Patent number: 8704937Abstract: An imaging optical system, an imaging device, and a digital apparatus have a four lens construction with positive, negative, positive, and negative refractive powers. A surface position at the maximum effective diameter of the second lens element is located on the object side than a surface vertex thereof. The fourth lens element has an inflection point at a position other than the intersection of the optical axis and the fourth lens element. The optical system satisfies the following conditions. 0.7<f1/f<5 ?0.8<(RS1+RS2)/(RS1?RS2)<3 ?3<(RS3+RS4)/(RS3?RS4)<2 0.03<d2/TL<0.2 2W>72 ?4>50, and 0.55<Y/TL<0.Type: GrantFiled: March 15, 2013Date of Patent: April 22, 2014Assignee: Konica Minolta Optics, Inc.Inventors: Keiji Matsusaka, Hiroaki Tanaka
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Patent number: 8693112Abstract: A projection lens unit for a pica-projector includes a plurality of plastic lenses and a single glass lens to minimize a change in focal length due to the heat generated inside the pico-projector. The lens array includes: a 1st lens with negative (?) refractive power, a 2nd lens with positive (+) refractive power, a 3rd fens with negative (?) refractive power, a 4th lens with negative (?) refractive power, and a 5th lens with positive (+) refractive power, wherein the 1st to 5th lenses are arranged in order from a screen upon which an image is projected, the 1st to 4th lenses are plastic lenses and the 5th lens is a glass lens.Type: GrantFiled: May 18, 2011Date of Patent: April 8, 2014Assignee: Sekonix Co., LtdInventors: Hee-Joong Lee, Jin-Ho Kim, Sung-Hoon Hwang, Seung-Ki Hong
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Publication number: 20140092293Abstract: A four element lens system for use with an imaging sensor includes first, second, third, and fourth lens elements and an optical filter that are arranged sequentially in order from an object side to an imaging side. The lens elements are coated with an anti-reflective film. The lens system further includes an optical filter that is disposed at a distance from the imaging sensor. The lens elements are relatively positioned to each other to satisfy specific conditions. The lens elements further include thickness to diameters ratios that satisfy specific conditions.Type: ApplicationFiled: February 1, 2013Publication date: April 3, 2014Applicant: Genius Electronic Optical Co., Ltd.Inventor: Shihhan Chen
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Patent number: 8687287Abstract: The present invention provides a projection apparatus including an image generation device and a projection lens. The projection lens is disposed between a light valve of the image generation device and a projection screen, and the projection lens includes a plurality of lenses. The lenses include a first lens, a second lens and a third lens, and the first lens, the second lens and the third lens are aspherical lenses. An effective focal length of the projection lens is between 5 mm and 8 mm, and a sum of the effective focal length of the projection lens and a number of the lenses is between 14 and 17.Type: GrantFiled: April 20, 2012Date of Patent: April 1, 2014Assignee: Qisda CorporationInventors: Ming-Kuen Lin, Tsung-Hsun Wu
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Patent number: RE44773Abstract: An optical imaging system is provided comprising a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group having a positive or negative power; and a fourth lens group having a positive or negative power.Type: GrantFiled: December 16, 2010Date of Patent: February 25, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Seong-Ha Park, Ki-Tae Kim