Patents Assigned to DONGIN OPTICAL CO., LTD.
  • Patent number: RE46734
    Abstract: Disclosed is an apparatus for multi-correcting a trajectory, the apparatus comprising a trajectory correcting unit in which a polygonal cam comprising a plurality of surfaces different in distance from a rotary center is rotatably installed between a dot sight or an optical signal and a firearm to adjust an angle between an optical axis of the dot sight or optical sight and a gun barrel axis of the firearm, wherein the trajectory correcting unit is installed to be movable in an axis direction, and coaxially provided with two or more polygonal cams to respectively set trajectory correcting angles corresponding to distances in accordance with calibers of a bullet and the kinds of bullet. With this, one dot sight or optical sight can be mounted to firearms using bullets different in the trajectory or firearms different in a caliber from one another, thereby enhancing equipment use efficiency.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: February 27, 2018
    Assignee: DONGIN OPTICAL CO., LTD.
    Inventor: Bo Sun Jeung
  • Patent number: RE46764
    Abstract: Provided is a dot sighting device with large caliber for binocular vision in which sighting can be performed rapidly and accurately by minimizing parallax. The dot sighting device is attached to and detached from a mount for a heavy machine gun. In addition, by using the dot sighting device with large caliber, a user can rapidly and accurately sight and fire a target by taking into consideration types and characteristics of the target and a distance to the target.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 27, 2018
    Assignee: DONGIN OPTICAL CO., LTD.
    Inventors: In Jung, Dong Hee Lee
  • Patent number: RE47133
    Abstract: Provided is a dot sighting device with large caliber for binocular vision in which sighting can be performed rapidly and accurately by minimizing parallax. The dot sighting device is attached to and detached from a mount for a heavy machine gun. In addition, by using the dot sighting device with large caliber, a user can rapidly and accurately sight and fire a target by taking into consideration types and characteristics of the target and a distance to the target.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: November 20, 2018
    Assignee: DONGIN OPTICAL CO., LTD.
    Inventor: In Jung
  • Patent number: RE47256
    Abstract: Provided is a dot sighting device with large caliber for binocular vision in which sighting can be performed rapidly and accurately by minimizing parallax. The dot sighting device is attached to and detached from a mount for a heavy machine gun. In addition, by using the dot sighting device with large caliber, a user can rapidly and accurately sight and fire a target by taking into consideration types and characteristics of the target and a distance to the target.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: February 26, 2019
    Assignee: DONGIN OPTICAL CO., LTD.
    Inventors: In Jung, Dong Hee Lee
  • Patent number: RE47336
    Abstract: Disclosed is an apparatus for multi-correcting a trajectory, the apparatus comprising a trajectory correcting unit in which a polygonal cam comprising a plurality of surfaces different in distance from a rotary center is rotatably installed between a dot sight or an optical signal and a firearm to adjust an angle between an optical axis of the dot sight or optical sight and a gun barrel axis of the firearm, wherein the trajectory correcting unit is installed to be movable in an axis direction, and coaxially provided with two or more polygonal cams to respectively set trajectory correcting angles corresponding to distances in accordance with calibers of a bullet and the kinds of bullet. With this, one dot sight or optical sight can be mounted to firearms using bullets different in the trajectory or firearms different in a caliber from one another, thereby enhancing equipment use efficiency.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: April 2, 2019
    Assignee: DONGIN OPTICAL CO., LTD.
    Inventors: Dong Hee Lee, Bo Sun Jeung, In Jung
  • Patent number: RE48545
    Abstract: Provided is a dot sighting device with large caliber for binocular vision in which sighting can be performed rapidly and accurately by minimizing parallax. The dot sighting device is attached to and detached from a mount for a heavy machine gun. In addition, by using the dot sighting device with large caliber, a user can rapidly and accurately sight and fire a target by taking into consideration types and characteristics of the target and a distance to the target.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: May 4, 2021
    Assignee: DONGIN OPTICAL CO., LTD.
    Inventors: In Jung, Dong Hee Lee
  • Patent number: RE48746
    Abstract: Provided is a dot sighting device with large caliber for binocular vision in which sighting can be performed rapidly and accurately by minimizing parallax. The dot sighting device is attached to and detached from a mount for a heavy machine gun. In addition, by using the dot sighting device with large caliber, a user can rapidly and accurately sight and fire a target by taking into consideration types and characteristics of the target and a distance to the target.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: September 21, 2021
    Assignee: DONGIN OPTICAL CO., LTD.
    Inventors: In Jung, Dong Hee Lee
  • Patent number: RE49977
    Abstract: Provided is a dot sighting device with large caliber for binocular vision in which sighting can be performed rapidly and accurately by minimizing parallax. The dot sighting device is attached to and detached from a mount for a heavy machine gun. In addition, by using the dot sighting device with large caliber, a user can rapidly and accurately sight and fire a target by taking into consideration types and characteristics of the target and a distance to the target.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: May 21, 2024
    Assignee: DONGIN OPTICAL CO., LTD.
    Inventors: In Jung, Dong Hee Lee