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公开(公告)号：US10782503B2
公开(公告)日：2020-09-22
申请号：US15859842
申请日：2018-01-02
发明人： Po-Yuan Shih , Bo-Yan Chen , Hsi-Ling Chang
摘要： A lens assembly includes a first lens, a second lens, a third lens, and a fourth lens, wherein the first lens, the second lens, the third lens, and the fourth lens are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with negative refractive power and includes a concave surface facing the image side. The third lens is with refractive power and includes a convex surface facing the image side. The fourth lens is with refractive power. The lens assembly satisfies: FOV≤56°, wherein FOV is a field of view of the lens assembly.
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公开(公告)号：US20170075088A1
公开(公告)日：2017-03-16
申请号：US14991624
申请日：2016-01-08
发明人： FENGQING SUN
CPC分类号： G02B13/004 , G02B1/041 , G02B5/208 , G02B9/50 , G02B9/56
摘要： A lens assembly for portable devices comprises: an aperture stop, a plastic first lens element with positive refractive power having a convex object-side surface; a plastic second lens element with negative refractive power having a concave image-side surface and an object-side surface being concave in a peripheral region; a plastic third lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a plastic fourth lens element with positive refractive power having an image-side surface being concave in a paraxial region and convex in a peripheral region; and an IR-cut filter(infrared-cut filter);wherein the RImin represents the minimum RI(relative illumination) of effective field and it satisfies the following relation: 0.36
摘要翻译： 一种用于便携式装置的透镜组件包括：孔径光阑，具有凸起物体侧表面的具有正折光力的塑料第一透镜元件; 具有负折射力的塑料第二透镜元件，具有凹面图像侧表面和物体侧表面在周边区域中凹陷; 具有负折射力的塑料第三透镜元件，具有凹面物侧表面和凸像侧表面; 具有正屈光力的塑料第四透镜元件，其具有在近轴区域凹陷的图像侧表面并且在周边区域中凸出; 和IR截止滤波器（红外截止滤波器）;其中，RImin表示有效场的最小RI（相对照度），满足以下关系：0.36
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公开(公告)号：US20190056566A1
公开(公告)日：2019-02-21
申请号：US15892758
申请日：2018-02-09
发明人： Ho Sik YOO , Dong Shin YANG , Yong Joo JO , Sot Eum SEO
摘要： An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3
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公开(公告)号：US4943146A
公开(公告)日：1990-07-24
申请号：US420497
申请日：1989-10-10
申请人： Takashi Iizuka
发明人： Takashi Iizuka
摘要： A reading lens system comprises, in order from the object side, a positive meniscus first lens element having a convex surface directed toward the object, a positive meniscus second lens element having a convex surface directed toward the object, a negative meniscus third lens element having a convex surface directed toward the object, a negative meniscus fourth lens element having a concave surface directed toward the object, a positive meniscus fifth lens element having a concave surface directed toward the object, and a positive sixth lens element. The second and third lens elements are cemented and the fourth and fifth lens elements are also cemented to provide an overall system of four-unit-six-element composition, with the lens system satisfying a number of conditions to obtain a lens having an F number of about 1:4.0 and a half viewing angle of not greater than 20.degree. and which is capable of efficient compensation for aberrations, in particular astigmatism and chromatic aberrations.
摘要翻译： 一种读取透镜系统，从物体侧依次包括具有朝向物体的凸面的正弯液面第一透镜元件，具有朝向物体的凸面的正弯月面第二透镜元件，负弯月面第三透镜元件，具有 朝向物体的凸面，具有朝向物体的凹面的负弯液面第四透镜元件，具有朝向物体的凹面的正弯月面第五透镜元件和正第六透镜元件。 第二和第三透镜元件被胶合，并且第四和第五透镜元件也被胶合以提供四单元六元素组成的整个系统，透镜系统满足多个条件以获得具有F数的透镜 约为1：4.0，半视角不大于20°，能够有效补偿像差，特别是象散和色差。
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公开(公告)号：US4784480A
公开(公告)日：1988-11-15
申请号：US233188
申请日：1981-02-10
申请人： Hideo Yokota , Yasuyuki Yamada
发明人： Hideo Yokota , Yasuyuki Yamada
摘要： An objective lens comprising a front lens group of positive power followed by a diaphragm, and a rear lens group of positive power axially movable for focusing and comprised of a plurality of members with the strongest diverging surface of concave curvature being arranged toward the front of the lens.
摘要翻译： 一种物镜，包括正光焦度的前透镜组，后面是光阑，以及能够轴向移动以进行聚焦的正透镜组，并且具有最强的凹曲率的发散表面的多个部件的后透镜组朝向 镜片。
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公开(公告)号：US20240219690A1
公开(公告)日：2024-07-04
申请号：US18601148
申请日：2024-03-11
发明人： Ho Sik YOO , Dong Shin YANG , Yong Joo JO , Sot Eum SEO
CPC分类号： G02B13/004 , G02B9/38 , G02B9/50 , G02B9/56 , G02B13/0065 , G02B13/02
摘要： An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3
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公开(公告)号：US11656434B2
公开(公告)日：2023-05-23
申请号：US17101187
申请日：2020-11-23
发明人： Ho Sik Yoo , Dong Shin Yang , Yong Joo Jo , Sot Eum Seo
CPC分类号： G02B13/004 , G02B9/38 , G02B9/50 , G02B9/56 , G02B13/0065 , G02B13/02
摘要： An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3
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公开(公告)号：US11536933B2
公开(公告)日：2022-12-27
申请号：US16992216
申请日：2020-08-13
发明人： Po-Yuan Shih , Bo-Yan Chen , Hsi-Ling Chang
摘要： A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with negative refractive power and includes a concave surface facing the image side. The third lens is with refractive power and includes a convex surface facing the image side. The fourth, fifth, and sixth lenses are with refractive power. The lens assembly satisfies: 2 mm
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公开(公告)号：US09739977B2
公开(公告)日：2017-08-22
申请号：US14991624
申请日：2016-01-08
发明人： Fengqing Sun
CPC分类号： G02B13/004 , G02B1/041 , G02B5/208 , G02B9/50 , G02B9/56
摘要： A lens assembly for portable devices comprises: an aperture stop, a plastic first lens element with positive refractive power having a convex object-side surface; a plastic second lens element with negative refractive power having a concave image-side surface and an object-side surface being concave in a peripheral region; a plastic third lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a plastic fourth lens element with positive refractive power having an image-side surface being concave in a paraxial region and convex in a peripheral region; and an IR-cut filter (infrared-cut filter); wherein the RImin represents the minimum RI (relative illumination) of effective field and it satisfies the following relation: 0.36
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公开(公告)号：US11960058B2
公开(公告)日：2024-04-16
申请号：US18299984
申请日：2023-04-13
发明人： Ho Sik Yoo , Dong Shin Yang , Yong Joo Jo , Sot Eum Seo
CPC分类号： G02B13/004 , G02B9/38 , G02B9/50 , G02B9/56 , G02B13/0065 , G02B13/02
摘要： An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward an image side on an optical axis, and a reflecting member disposed closer to the object side, as compared to the first lens, and having a reflecting surface configured to change a path of light to be incident to the first to fourth lenses. The first to fourth lenses are disposed to be spaced apart from each other by a preset distance along the optical axis, and 1.3
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