Patents by Inventor Yong-Joo Jo

Yong-Joo Jo 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).

  • Subminiature optical system and portable device including the same
    Patent number: 11796773
    Abstract: There are provided a subminiature optical system having a miniature size and capable of obtaining a narrow view angle using only five sheets of lenses, and a portable device having the same. The subminiature optical system includes a first lens convex toward the object side and having positive refractive power, a second lens concave toward an image side and having negative refractive power, a third lens convex toward the object side and having positive refractive power, a fourth lens concave toward the image plane and having negative refractive power, and a fifth lens convex toward the image plane and having negative or positive refractive power, sequentially from an object side.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: October 24, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yong Joo Jo, Young Suk Kang
  • Optical imaging system and mobile electronic device
    Patent number: 11789241
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, sequentially disposed from an object side. The first lens has negative refractive power, an image side surface thereof is concave, and an angle of view of the optical system including the first lens to the sixth lens is 100° or more. When a focal length of the first lens is f1_1, and a total focal length of the optical system including the first lens to the sixth lens is F1, 1.0<|f1_1/F1|<2.0 is satisfied.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: October 17, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Phil Ho Jung, Yong Joo Jo, Jae Hyun Baik
  • Optical imaging system
    Patent number: 11789239
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 1<|f134567?f|/f, where f134567 is a composite focal length of the first to seventh lenses calculated with an index of refraction of the second lens set to 1.0, f is an overall focal length of the optical imaging system, and f134567 and f are expressed in a same unit of measurement.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: October 17, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Hyun Baik, Min Hyuk Im, Yong Joo Jo, Ga Young An
  • TELESCOPIC OPTICAL IMAGING SYSTEM
    Publication number: 20230324652
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially arranged on an optical axis from an object side to an image side, wherein an image-side surface of the first lens and an image-side surface of the sixth lens may be concave, and 0.7<TL/f<1.0 and |Nd2-Nd3|<0.2 in which TL may be a distance from an object-side surface of the first lens to an imaging plane, f may be an overall focal length of the optical imaging system, Nd2 may be a refractive index of the second lens, and Nd3 may be a refractive index of the third lens.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 12, 2023
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Hwa JUNG, Yong Joo JO
  • Imaging lens system including eight lenses of ++?+??+?, ++?+?+?? or ++?+?++? refractive powers
    Patent number: 11782241
    Abstract: An imaging lens system includes a first lens having refractive power, a second lens having refractive power, a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power, a sixth lens having refractive power and having a convex object-side surface, a seventh lens having refractive power, and an eighth lens having refractive power, wherein a field of view (FOV) of the imaging lens system is 78-85 degrees.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: October 10, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ju Hwa Son, Hyo Jin Hwang, Yong Joo Jo, Sang Hyun Jang, Jong Gi Lee
  • OPTICAL IMAGING SYSTEM
    Publication number: 20230314766
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 0.5<L12345TRavg/L7TR<0.9, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, L7TR is an overall outer diameter of the seventh lens, and L12345TRavg and L7TR are expressed in a same unit of measurement.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Hwa JUNG, Sot Eum SEO, Yong Joo JO, Ga Young AN
  • FOLDED LENS SYSTEM
    Publication number: 20230314775
    Abstract: A folded lens system includes a lens module including a plurality of lenses, an image sensor having an imaging plane, and a first reflection module disposed between the lens module and the image sensor and configured to change a path of light passing through the lens module a plurality of times. The light passing through the lens module is subjected to three total internal reflections and two reflections by the first reflection module.
    Type: Application
    Filed: January 4, 2023
    Publication date: October 5, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Tae Yeon LIM, Yong Joo JO, Jae Hyuk HUH, Do Hyeong JANG
  • Optical imaging system and portable electronic device
    Patent number: 11774709
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens disposed in order from an object side. The optical imaging system satisfies 4.0<f/IMG_HT<5.0, where f is a focal length of the optical imaging system, and IMG_HT is one-half of a diagonal length of an imaging plane.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: October 3, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hag Chul Kim, Yong Joo Jo, Che Young Lim
  • Optical imaging system and portable electronic device
    Patent number: 11768350
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, and a fourth lens disposed in order from an object side. The optical imaging system satisfies 4.0<f/IMG_HT<5.0, where f is a focal length of the optical imaging system, and IMG_HT is one-half of a diagonal length of an imaging plane.
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: September 26, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hag Chul Kim, Yong Joo Jo, Che Young Lim
  • OPTICAL SYSTEM
    Publication number: 20230296865
    Abstract: An optical system includes a first through six lenses. The first lens includes a positive refractive power. The second lens includes a negative refractive power. The third lens includes a positive refractive power. The fourth lens includes a negative refractive power and the fifth lens includes a negative refractive power. The sixth lens includes a positive refractive power and an inflection point formed on an image-side surface thereof and 70<FOV is satisfied, where FOV is a field of view of the optical system.
    Type: Application
    Filed: May 23, 2023
    Publication date: September 21, 2023
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yong Joo JO, Jae Hyun BAIK
  • Optical imaging system
    Patent number: 11754822
    Abstract: An optical imaging system includes a first lens having refractive power, a second lens including a first reflective region formed on an object-side surface of the second lens, a third lens having a second reflective region formed on an image-side surface of the third lens, and a fourth lens having refractive power.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: September 12, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hag Chul Kim, Yong Joo Jo
  • Telescopic optical imaging system
    Patent number: 11747597
    Abstract: An optical imaging system includes a first lens which has refractive power, a second lens which has refractive power, a third lens which has a convex object-side surface, and an inflection point is formed on an image-side surface thereof, a fourth lens which has refractive power, a fifth lens which has a convex object-side surface, and a sixth lens which has refractive power and an inflection point is formed on an image-side surface thereof, and wherein the first to sixth lens are sequentially disposed from an object side.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: September 5, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jung Hui Ko, Ju Hwa Son, Ju Sung Park, Yong Joo Jo
  • OPTICAL IMAGING SYSTEM
    Publication number: 20230273408
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens sequentially disposed from the first lens to the fifth lens from an object-side of the imaging system to an image-side of the imaging system and each having refractive power. The fourth lens has a convex object-side surface and an expression 0.7<TL/f<1.0 is satisfied, where TL is a distance from an object-side surface of the first lens to an imaging plane, and f is an overall focal length of the optical imaging system.
    Type: Application
    Filed: May 8, 2023
    Publication date: August 31, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Tae Youn LEE, Jin Hwa JUNG, Yong Joo JO
  • OPTICAL IMAGING SYSTEM
    Publication number: 20230273402
    Abstract: An optical imaging system includes a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, and a sixth lens having a positive refractive power and having a convex image-side shape, sequentially arranged in a direction from an object side of the optical imaging system to an imaging plane of the optical imaging system.
    Type: Application
    Filed: May 5, 2023
    Publication date: August 31, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Tae Youn LEE, Yong Joo JO
  • OPTICAL IMAGING SYSTEM AND PORTABLE ELECTRONIC DEVICE INCLUDING THE SAME
    Publication number: 20230273410
    Abstract: An optical imaging system includes a plurality of lenses disposed along an optical axis, and a reflection member disposed to be closer to an object than all of the plurality of lenses and having a reflection surface configured to change a path of light. The plurality of lenses are spaced apart from each other by preset distances along the optical axis, and the condition 0.8<TTL/ft<1.1 is satisfied, where TTL is a distance from an object-side surface of a lens closest to the object among the plurality of lenses to an imaging plane of an image sensor, and ft is an overall focal length of an optical system including the plurality of lenses.
    Type: Application
    Filed: May 9, 2023
    Publication date: August 31, 2023
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Tae Youn LEE, Jin Hwa JUNG, Yong Joo JO
  • OPTICAL IMAGING SYSTEM
    Publication number: 20230273403
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 0.5 < L12345TRavg/L7TR < 0.9, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, L7TR is an overall outer diameter of the seventh lens, and L12345TRavg and L7TR are expressed in a same unit of measurement.
    Type: Application
    Filed: March 20, 2023
    Publication date: August 31, 2023
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Hwa JUNG, Sot Eum SEO, Yong Joo JO, Ga Young AN
  • Optical imaging system
    Patent number: 11740440
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens having negative refractive power, a fifth lens having positive refractive power, a sixth lens having a convex image-side surface, and a seventh lens, disposed sequentially from an object side. The optical imaging system satisfies ?5.0<f2/f<?2.0, where f is a focal length of the optical imaging system and f2 is a focal length of the second lens. An F No. of the optical imaging system is less than 1.7.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: August 29, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Il Yong Park, In Do Seo, Yong Joo Jo
  • Optical imaging system
    Patent number: 11726299
    Abstract: An optical imaging system includes a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having a refractive power, a fifth lens having negative refractive power, and a sixth lens having a refractive power and a convex image-side surface. The first lens to the sixth lens are sequentially disposed from the object side to an imaging plane. An expression 0.7<TL/f<1.0 is satisfied, where TL represents a distance from an object-side surface of the first lens to the imaging plane and f represents an overall focal length of the optical imaging system.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: August 15, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Tae Youn Lee, Yong Joo Jo
  • OPTICAL IMAGING SYSTEM
    Publication number: 20230251463
    Abstract: 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<TTL/BFL<3.5, where TTL is a distance from an object-side surface of the first lens to an imaging plane of an image sensor, and BFL is a distance from an image-side surface of the fourth lens to the imaging plane of the image sensor.
    Type: Application
    Filed: April 13, 2023
    Publication date: August 10, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Ho Sik YOO, Dong Shin YANG, Yong Joo JO, Sot Eum SEO
  • OPTICAL IMAGING SYSTEM
    Publication number: 20230251462
    Abstract: An optical imaging system includes a first lens having a positive refractive power; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power and a concave image-side surface; a fifth lens having a refractive power; a sixth lens having a refractive power; a seventh lens having a refractive power; and an eighth lens having a refractive power and a concave object-side surface, wherein the first to eighth lenses are sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system.
    Type: Application
    Filed: April 24, 2023
    Publication date: August 10, 2023
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ju Hwa SON, Min Hyuk IM, Ga Young AN, Yong Joo JO