Patents by Inventor Rong-Shun Syu
Rong-Shun Syu 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: 11774715Abstract: A lens assembly includes a first lens, a second lens, and a third lens. The first lens is with negative refractive power and includes a concave surface facing an image side. The second lens is with positive refractive power and includes a convex surface facing the image side. The third lens is with positive refractive power and includes a convex surface facing an object side. The first lens, the second lens, and the third lens are arranged in order from the object side to the image side along an optical axis. The lens assembly satisfies the following condition: 3.5?R21/?8; wherein R21 is a radius of curvature of an object side surface of the second lens and f is an effective focal length of the lens assembly.Type: GrantFiled: March 8, 2021Date of Patent: October 3, 2023Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.Inventor: Rong-Shun Syu
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Patent number: 11768355Abstract: A wide-angle lens assembly includes a front lens group and a rear lens group. The front lens group includes a first lens having negative refractive power and a second lens having negative refractive power, wherein the first lens is a meniscus lens and the second lens includes a concave surface facing an image side. The rear lens group includes a third lens having positive refractive power, a fourth lens having positive refractive power, and a fifth lens having negative refractive power, wherein the fifth lens includes a concave surface facing an object side. The wide-angle lens assembly satisfies: 13.6 mm?fK?f1?25.2 mm; wherein fK is an effective focal length of a lens third close to the image side and f1 is an effective focal length of the first lens.Type: GrantFiled: August 6, 2020Date of Patent: September 26, 2023Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.Inventor: Rong-Shun Syu
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Publication number: 20230079872Abstract: A wide-angle lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens is with negative refractive power and includes a concave surface facing an object side. The second lens is with refractive power. The third lens is with refractive power. The fourth lens is with refractive power. The fifth lens is with negative refractive power. The sixth lens is with positive refractive power and includes a convex surface facing an image side. The seventh lens is with positive refractive power. The eighth lens is with negative refractive power and includes a concave surface facing the object side. The first, second, third, fourth, fifth, sixth, seventh, and eighth lenses are arranged in order from the object side to the image side along an optical axis.Type: ApplicationFiled: August 4, 2022Publication date: March 16, 2023Inventor: Rong-Shun SYU
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Patent number: 11604334Abstract: A lens assembly includes a front lens group and a rear lens group. The front lens group includes a first lens having positive refractive power and a second lens having negative refractive power. The rear lens group includes a third lens having positive refractive power and a fourth lens having negative refractive power, wherein the third lens includes a convex surface facing an object side and another convex surface facing an image side and the fourth lens includes a concave surface facing the image side. The first lens, the second lens, the third lens, and the fourth lens are arranged in order from the object side to the image side along an optical axis. The lens assembly satisfies: 13.5 mm<f+f1<20 mm; wherein f is an effective focal length of the lens assembly and f1 is an effective focal length of the first lens.Type: GrantFiled: February 24, 2020Date of Patent: March 14, 2023Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.Inventor: Rong-Shun Syu
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Publication number: 20220187569Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens, all of which are arranged in order from an object side to an image side along an optical axis. The first, second, seventh, and eighth lenses are with refractive power. The third lens is with negative refractive power and includes a concave surface facing the object side. The fourth lens is with positive refractive power. The fifth lens is with positive refractive power and includes a convex surface facing the object side. The sixth lens is with positive refractive power and includes a convex surface facing the image side. The ninth lens is with positive refractive power and includes a convex surface facing the object side. An air gap is disposed between the sixth lens and the seventh lens.Type: ApplicationFiled: December 7, 2021Publication date: June 16, 2022Inventors: Tsan-Haw LEE, Rong-Shun SYU
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Publication number: 20210356707Abstract: A lens assembly includes a first lens, a second lens, and a third lens. The first lens is with negative refractive power and includes a concave surface facing an image side. The second lens is with positive refractive power and includes a convex surface facing the image side. The third lens is with positive refractive power and includes a convex surface facing an object side. The first lens, the second lens, and the third lens are arranged in order from the object side to the image side along an optical axis. The lens assembly satisfies the following condition: 3.5?R21/?8; wherein R21 is a radius of curvature of an object side surface of the second lens and f is an effective focal length of the lens assembly.Type: ApplicationFiled: March 8, 2021Publication date: November 18, 2021Inventor: Rong-Shun Syu
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Publication number: 20210072512Abstract: A wide-angle lens assembly includes a front lens group and a rear lens group. The front lens group includes a first lens having negative refractive power and a second lens having negative refractive power, wherein the first lens is a meniscus lens and the second lens includes a concave surface facing an image side. The rear lens group includes a third lens having positive refractive power, a fourth lens having positive refractive power, and a fifth lens having negative refractive power, wherein the fifth lens includes a concave surface facing an object side. The wide-angle lens assembly satisfies: 13.6 mm?fK?f1?25.2 mm; wherein fK is an effective focal length of a lens third close to the image side and f1 is an effective focal length of the first lens.Type: ApplicationFiled: August 6, 2020Publication date: March 11, 2021Inventor: Rong-Shun Syu
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Publication number: 20200301108Abstract: A lens assembly includes a front lens group and a rear lens group. The front lens group includes a first lens having positive refractive power and a second lens having negative refractive power. The rear lens group includes a third lens having positive refractive power and a fourth lens having negative refractive power, wherein the third lens includes a convex surface facing an object side and another convex surface facing an image side and the fourth lens includes a concave surface facing the image side. The first lens, the second lens, the third lens, and the fourth lens are arranged in order from the object side to the image side along an optical axis. The lens assembly satisfies: 13.5 mm<f+f1<20 mm; wherein f is an effective focal length of the lens assembly and f1 is an effective focal length of the first lens.Type: ApplicationFiled: February 24, 2020Publication date: September 24, 2020Inventor: Rong-Shun Syu
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Patent number: 9612419Abstract: A lens assembly includes a first lens group, a stop and a second lens group, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens group includes a first lens and a second lens, wherein the first lens is with negative refractive power and the second lens is with positive refractive power. The second lens group includes a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the third lens and the fifth lens are with negative refractive power, and the fourth lens and the sixth lens are with positive refractive power. The lens assembly satisfies 0.23?f/TL?0.45, wherein f is an effective focal length of the lens assembly and TL is a distance from an object side surface of the first lens to an image plane along the optical axis.Type: GrantFiled: May 4, 2015Date of Patent: April 4, 2017Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.Inventor: Rong-Shun Syu
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Publication number: 20150323768Abstract: A lens assembly includes a first lens group, a stop and a second lens group, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens group includes a first lens and a second lens, wherein the first lens is with negative refractive power and the second lens is with positive refractive power. The second lens group includes a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the third lens and the fifth lens are with negative refractive power, and the fourth lens and the sixth lens are with positive refractive power. The lens assembly satisfies 0.23?f/TL?0.45, wherein f is an effective focal length of the lens assembly and TL is a distance from an object side surface of the first lens to an image plane along the optical axis.Type: ApplicationFiled: May 4, 2015Publication date: November 12, 2015Inventor: Rong-Shun Syu