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公开(公告)号：US10466451B2
公开(公告)日：2019-11-05
申请号：US15830003
申请日：2017-12-04
发明人： Fei-Hsin Tsai , Ching-Yun Huang
摘要： A two-piece infrared single wavelength projection lens system includes, in order from an image side to an image source side: a first lens element with a positive refractive power having an image-side surface being convex near an optical axis and an image source-side surface being concave near the optical axis, at least one of the image-side and the image source-side surfaces of the first lens element being aspheric; a second lens element with a positive refractive power having an image-side surface being concave near the optical axis and an image source-side surface being convex near the optical axis, at least one of the image-side and the image source-side surfaces of the second lens element being aspheric; and a stop disposed before the image source-side surface of the first lens element or between the image source-side surface of the first lens element and an image-side surface of the second lens element.
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公开(公告)号：US10459194B2
公开(公告)日：2019-10-29
申请号：US15936411
申请日：2018-03-26
发明人： Fei-Hsin Tsai , Ching-Yun Huang
摘要： A four-piece infrared single wavelength projection lens system in accordance with the present invention comprises, in order from an image side to an image source side: a stop; a first lens element with a positive refractive power having an image-side surface being convex near an optical axis, the first lens element is made of glass material; a second lens element with a refractive power having an image-side surface being convex near the optical axis and an image source-side surface being concave near the optical axis; a third lens element with a negative refractive power having an image-side surface being concave near the optical axis and an image source-side surface being concave near the optical axis; and a fourth lens element with a positive refractive power having an image-side surface being concave near the optical axis and an image source-side surface being convex near the optical axis.
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公开(公告)号：US10228542B2
公开(公告)日：2019-03-12
申请号：US15042761
申请日：2016-02-12
发明人： Fei-Hsin Tsai , Chun-Sheng Lee
摘要： A four-piece infrared single wavelength lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power, a stop, a second lens element with a refractive power, a third lens element with a positive refractive power, and a fourth lens element with a negative refractive power. The focal length of the first lens element is f1, the focal length of the second lens element and the third lens element combined is f23, and they satisfy the relation: 0.05
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4.发明授权公开(公告)号：US11262560B2
公开(公告)日：2022-03-01
申请号：US16034318
申请日：2018-07-12
发明人： Fei-Hsin Tsai , Sian-Chih Ke , Shu-Tzu Lai
摘要： A four-piece infrared single wavelength lens system includes, in order from the object side to the image side: a stop, a first lens element with a refractive power having an object-side surface being convex near an optical axis, a second lens element with a positive refractive power, a third lens element with a positive refractive power having an object-side surface being concave near the optical axis and an image-side surface being convex near the optical axis, a fourth lens element with a negative refractive power having an object-side surface being convex near the optical axis and an image-side surface being concave near the optical axis. Such arrangements can provide a four-piece infrared single wavelength lens system which has a wide field of view, large stop, short length and less distortion.
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公开(公告)号：US11048069B2
公开(公告)日：2021-06-29
申请号：US15821841
申请日：2017-11-23
发明人： Fei-Hsin Tsai , Ching-Yun Huang
摘要： A three-piece infrared single wavelength projection lens system includes, in order from an image side to an image source side: a first lens element with a positive refractive power; a second lens element with a refractive power; a third lens element with a positive refractive power; a stop disposed before an image source-side surface of the first lens element or between the image source-side surface of the first lens element and an image source-side surface of the second lens element; and the first lens element or the second lens element is made of glass. Such arrangements can provide a three-piece infrared single wavelength projection lens system with better image sensing function.
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公开(公告)号：US11009679B2
公开(公告)日：2021-05-18
申请号：US15821840
申请日：2017-11-23
发明人： Fei-Hsin Tsai , Ching-Yun Huang
摘要： A three-piece infrared single wavelength projection lens system includes, in order from an image side to an image source 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; and a stop disposed before an image source-side surface of the first lens element or between an image-side surface of the first lens element and an image source-side surface of the second lens element. Such arrangements can provide a three-piece infrared single wavelength projection lens system with better image sensing function.
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公开(公告)号：US10564393B2
公开(公告)日：2020-02-18
申请号：US15936417
申请日：2018-03-26
发明人： Fei-Hsin Tsai , Shu-Tzu Lai
摘要： A four-piece infrared single wavelength lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power having an object-side surface being convex near an optical axis and an image-side surface being concave near the optical axis, a stop, a second lens element with a refractive power, a third lens element with a positive refractive power having an object-side surface being concave near the optical axis and an image-side surface being convex near the optical axis, a fourth lens element with a negative refractive power having an object-side surface being convex near the optical axis and an image-side surface being concave near the optical axis. Such arrangements can provide a four-piece infrared single wavelength lens system which has a wide field of view, high resolution, short length and less distortion.
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公开(公告)号：US10101561B2
公开(公告)日：2018-10-16
申请号：US15298761
申请日：2016-10-20
发明人： Fei-Hsin Tsai , Shu-Tzu Lai , Sian-Chih Ke
摘要： A five-piece optical imaging lens, in order from an object side to an image side, includes: an aperture stop; a first lens element with a positive refractive power having an object-side surface being convex near an optical axis and the image-side surface being concave near the optical axis; a second lens element with a negative refractive power having an object-side surface being convex near the optical axis and an image-side surface being concave near the optical axis; a third lens element with a negative refractive power having an image-side surface being concave near the optical axis; a fourth lens element with a positive refractive power having an object-side surface being concave near the optical axis and an image-side surface being convex near the optical axis; a fifth lens element with a negative refractive power having an image-side surface being concave near the optical axis.
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公开(公告)号：US09897782B1
公开(公告)日：2018-02-20
申请号：US15375056
申请日：2016-12-09
发明人： Fei-Hsin Tsai , Shu-Tzu Lai
CPC分类号： G02B13/0045 , G02B9/62
摘要： A six-piece optical lens system with a wide field of view includes, in order from the object side to the image side: a first lens element with a negative refractive power, a second lens element with a positive refractive power, a stop, a third lens element with a positive refractive power, a fourth lens element with a negative refractive power, a fifth lens element with a positive refractive power, a sixth lens element with a negative refractive power. Abbe numbers of the third, fourth, fifth, sixth lens elements are V3, V4, V5, V6, a focal length of the six-piece optical lens system with a wide field of view is f, a distance from an object-side surface of the first lens element to an image plane along an optical axis is TL, satisfying the relations: 29
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公开(公告)号：US20190170986A1
公开(公告)日：2019-06-06
申请号：US15830003
申请日：2017-12-04
发明人： Fei-Hsin Tsai , Ching-Yun Huang
CPC分类号： G02B13/14 , G02B9/06 , G02B9/08 , G02B13/003 , G02B13/008
摘要： A two-piece infrared single wavelength projection lens system includes, in order from an image side to an image source side: a first lens element with a positive refractive power having an image-side surface being convex near an optical axis and an image source-side surface being concave near the optical axis, at least one of the image-side and the image source-side surfaces of the first lens element being aspheric; a second lens element with a positive refractive power having an image-side surface being concave near the optical axis and an image source-side surface being convex near the optical axis, at least one of the image-side and the image source-side surfaces of the second lens element being aspheric; and a stop disposed before the image source-side surface of the first lens element or between the image source-side surface of the first lens element and an image-side surface of the second lens element.
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