Patents by Inventor Seong-Hyok Kim
Seong-Hyok Kim 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: 7453617Abstract: A scanning device includes a mirror unit formed on a substrate so as to be pivotable centering around one axis for adjusting the direction of reflected light; a support frame formed at one surface of the mirror unit for preventing dynamic deflection of the mirror unit and supporting the mirror unit; and a driving unit provided on the substrate and driving the mirror unit. Thus, a dynamic deflection phenomenon does not occur when the mirror unit is pivoted centering around the pivoting axis. Accordingly, stable operation is possible and the angle of rotation of the mirror unit can be accurately adjusted, so that the scanning device can be effectively used in a high-speed precision scanning system.Type: GrantFiled: August 16, 2005Date of Patent: November 18, 2008Assignee: LG Electronics Inc.Inventors: Young-Joo Yee, Chang-Hyeon Ji, Seong-Hyok Kim
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Patent number: 7289421Abstract: In an optical pickup head of an optical recording reproducing apparatus, a fabrication method thereof, a lubricant-coated optical pickup head of an optical recording reproducing apparatus and a method for coating lubricant onto an optical pickup head, by using a MEMS (micro electro mechanical system) technique used for designing, fabricating and application of a microstructure, it is possible to miniaturize an optical pickup head of an optical recording reproducing apparatus and reduce a fabrication cost thereof.Type: GrantFiled: October 28, 2003Date of Patent: October 30, 2007Assignee: LG Electronics Inc.Inventors: Seong-Hyok Kim, Young-Joo Yee, Jung-Hoon Choi, Chang-Hoon Oh
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Publication number: 20060244859Abstract: The present invention relates to a small form factor camera module, more particularly, to a small form factor camera module having a mechanical iris and a shutter not only to improve an image quality by adjusting an amount of a light entering an image sensor but also to remarkably reduce a volume of the entire system by using an electromagnetic force and therefore to be applied to various applications which require for a small form factor camera module including a handheld terminal and so on, contrary to the existing electronic shutter.Type: ApplicationFiled: April 17, 2006Publication date: November 2, 2006Applicant: LG Electronics Inc.Inventors: Chang-Hyeon Ji, Jong-Uk Bu, Sang-Cheon Kim, Seong-Hyok Kim, Jung-Hoon Choi
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Patent number: 7116017Abstract: Disclosed is a device for reducing deterioration of image quality which can get rid of speckle by equalizing a laser from a light source on a screen by vibrating a reflective mirror installed between the light source and the screen at a predetermined amplitude. The device for reducing deterioration of image quality in a display system using a laser as a light source includes: a reflective mirror formed at the path of light positioned between the light source and a screen, for reflecting the laser; and a driving unit connected to the reflective mirror and vibrating the reflective mirror at a predetermined amplitude by using an electromagnetic force.Type: GrantFiled: March 1, 2005Date of Patent: October 3, 2006Assignee: LG Electronics Inc.Inventors: Chang-Hyeon Ji, Young-Joo Yee, Jeong-Hoon Choi, Seong-Hyok Kim
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Patent number: 7079329Abstract: A micro actuator for controlling a focal depth includes: a lens for forming a focal point by focusing light coming from a light source; a lens mounting unit having a lens mounted therein and allowing the lens to move in one axial direction; and an electromagnetic force generator consisting of a constant magnetic field generating member having a magnetic field in a predetermined direction and a variable magnetic field generating member for changing direction and strength of a magnetic field according to direction and amount of a current, installed at and around the lens mounting unit and causing the lens to move in a direction of an electromagnetic force generated by interaction of the two magnetic field generating members. The micro actuator for controlling a focal depth can be fabricated in a ultra-compact size, available for a mass production, and has a fast response speed.Type: GrantFiled: January 7, 2004Date of Patent: July 18, 2006Assignee: LG Electronics Inc.Inventors: Youngjoo Yee, Chang-Hyeon Ji, Seong-Hyok Kim
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Publication number: 20060108995Abstract: Disclosed herein is a low-power proximity AC current sensor. A low-power proximity AC current sensor according to the present invention includes a magnetic material having a location that changes depending on the intensity of a magnetic field formed outside the magnetic material; a piezoelectric film disposed at a location adjacent to the magnetic material and configured to generate electric charge due to a change in location of the magnetic material; and a substrate for securing the piezoelectric film. Another low-power proximity AC current sensor according to the present invention includes a magnetic material having a location that changes depending on the intensity of a magnetic field formed outside the magnetic material; corresponding electrodes disposed at a location adjacent to the magnetic material and configured to vary capacitance depending on a change in location of the magnetic material; and a substrate for securing the piezoelectric film.Type: ApplicationFiled: November 7, 2005Publication date: May 25, 2006Inventors: Jong-Uk Bu, Seong-Hyok Kim, Jung-Hoon Choi, Young-Joo Yee
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Publication number: 20060067666Abstract: Disclosed herein is a lens driving device which is able to increase displacement without restriction, does not require a complex structure despite having a low power consumption, solves problems of friction and noise occurring in a gear mechanism, and realizes miniaturization and lightness. The lens driving device of the present invention includes a substrate which generates surface acoustic waves on a surface thereof, and a movable unit which is coupled to an optical lens and executes translation above the substrate using the surface acoustic waves. Therefore, the lens driving device of the present invention can implement translation of a lens without a separate mechanism, unlike conventional driving devices using motors and screws. Furthermore, the present invention satisfies the recent trend towards miniaturization and lightness, thus being usable in a variety of industrial fields that use optical lenses.Type: ApplicationFiled: September 23, 2005Publication date: March 30, 2006Inventors: Jae-Hyoung Park, Chang-Hyeon Ji, Man-Hyo Ha, Seong-Hyok Kim, Jong-Uk Bu, Young-Joo Yee
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Patent number: 7007917Abstract: An electromagnetic control valve having a permanent magnet and a needle are fitted in a cylindrical valve body, and a coil, and first and second yokes are mounted on an outside circumferential surface of the valve body. There are first and second ports in the valve body for making an outside space and an inside space of the valve body in communication. There is an orifice in the valve body for making the first and the second ports in communication. The needle is disposed at a position opposite to a side of the orifice, for moving in an up/down direction when a current is applied to the coil. Direction and amount of movement of the needle are dependent on a direction and an intensity of the current applied to the coil. When the needle moves, a tip of the needle varies an opened area of the orifice linearly, according to which a flow rate of the fluid passed through the orifice is controlled according to a position of the needle.Type: GrantFiled: February 19, 2004Date of Patent: March 7, 2006Assignee: LG Electronics Inc.Inventors: Jung Hoon Choi, Young Joo Yee, Seong Hyok Kim, In Kyu Kim, Byeong Hwa Chung
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Publication number: 20060039060Abstract: A scanning device includes a mirror unit formed on a substrate so as to be pivotable centering around one axis for adjusting the direction of reflected light; a support frame formed at one surface of the mirror unit for preventing dynamic deflection of the mirror unit and supporting the mirror unit; and a driving unit provided on the substrate and driving the mirror unit. Thus, a dynamic deflection phenomenon does not occur when the mirror unit is pivoted centering around the pivoting axis. Accordingly, stable operation is possible and the angle of rotation of the mirror unit can be accurately adjusted, so that the scanning device can be effectively used in a high-speed precision scanning system.Type: ApplicationFiled: August 16, 2005Publication date: February 23, 2006Inventors: Young-Joo Yee, Chang-Hyeon Ji, Seong-Hyok Kim
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Publication number: 20050195508Abstract: Disclosed is a device for reducing deterioration of image quality which can get rid of speckle by equalizing a laser from a light source on a screen by vibrating a reflective mirror installed between the light source and the screen at a predetermined amplitude. The device for reducing deterioration of image quality in a display system using a laser as a light source includes: a reflective mirror formed at the path of light positioned between the light source and a screen, for reflecting the laser; and a driving unit connected to the reflective mirror and vibrating the reflective mirror at a predetermined amplitude by using an electromagnetic force.Type: ApplicationFiled: March 1, 2005Publication date: September 8, 2005Inventors: Chang-Hyeon Ji, Young-Joo Yee, Jeong-Hoon Choi, Seong-Hyok Kim
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Patent number: 6845668Abstract: A gyroscope which comprises: a driving fixed electrode (26) being fixed; a driving displacement electrode (24) being opposite to the driving fixed electrode, and being able to be displaced in a first direction; an inertial mass (23) being connected to the driving displacement electrode (24), being displaced in the first direction according to the first directional displacement of the driving displacement electrode (24), and being displaced in a second direction when an angular rate is applied; a sensing displacement electrode (22) being connected to the inertial mass (23), and being able to be displaced in the second direction according to the second directional displacement of the inertial mass (23); and a sensing fixed electrode (25) being opposite to the sensing displacement electrode and being fixed.Type: GrantFiled: January 30, 2002Date of Patent: January 25, 2005Assignee: Intellimicrons Co., Ltd.Inventors: Yong-Kweon Kim, Seong-Hyok Kim
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Publication number: 20040257672Abstract: A micro actuator for controlling a focal depth includes: a lens for forming a focal pint by focusing light coming from a light source; a lens mounting unit having a lens mounted therein and allowing the lens to move in one axial direction; and an electromagnetic force generator consisting of a constant magnetic field generating member having a magnetic field in a predetermined direction and an variable magnetic field generating member for changing direction and strength of a magnetic field according to direction and amount of a current, installed at and around the lens mounting unit and causing the lens to move in a direction of an electromagnetic force generated by interaction of the two magnetic field generating members. The micro actuator for controlling a focal depth can be fabricated in a ultra-compact size, available for a mass production, and has a fast response speed.Type: ApplicationFiled: January 7, 2004Publication date: December 23, 2004Applicant: LG Electronics Inc.Inventors: Youngjoo Yee, Chang-Hyeon Ji, Seong-Hyok Kim
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Publication number: 20040202101Abstract: In an optical pickup head of an optical recording reproducing apparatus, a fabrication method thereof, a lubricant-coated optical pickup head of an optical recording reproducing apparatus and a method for coating lubricant onto an optical pickup head, by using a MEMS (micro electro mechanical system) technique used for designing, fabricating and application of a microstructure, it is possible to miniaturize an optical pickup head of an optical recording reproducing apparatus and reduce a fabrication cost thereof.Type: ApplicationFiled: October 28, 2003Publication date: October 14, 2004Inventors: Seong-Hyok Kim, Young-Joo Yee, Jung-Hoon Choi, Chang-Hoon Oh
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Publication number: 20030159509Abstract: A gyroscope which comprises: a driving fixed electrode (26) being fixed; a driving displacement electrode (24) being opposite to the driving fixed electrode, and being able to be displaced in a first direction; an inertial mass (23) being connected to the driving displacement electrode (24), being displaced in the first direction according to the first directional displacement of the driving displacement electrode (24), and being displaced in a second direction when an angular rate is applied; a sensing displacement electrode (22) being connected to the inertial mass (23), and being able to be displaced in the second direction according to the second directional displacement of the inertial mass (23); and a sensing fixed electrode (25) being opposite to the sensing displacement electrode and being fixed.Type: ApplicationFiled: March 25, 2003Publication date: August 28, 2003Inventors: Yong-Kweon Kim, Seong-Hyok Kim