Patents by Inventor Byung J. Chang
Byung J. Chang 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: 9383077Abstract: An improved illuminator with an adjustable beam pattern to be worn by medical and dental professionals includes a housing, a light-emitting diode (LED) disposed in the housing outputting light through a distal opening in the housing, an achromatic doublet lens mounted in the opening in the housing, and a singlet lens disposed between the LED and the achromatic lens. The distance between the singlet lens and the doublet lens may be adjustable, and/or distance between the LED and the singlet lens may be adjustable, through a threaded connections, for example. In the preferred embodiment, the achromatic doublet lens, the singlet lens, or both the singlet and the doublet lens have a planar surface. A conical mirror may be disposed between the LED and the singlet lens to increase the light collection efficiency of the LED.Type: GrantFiled: March 3, 2014Date of Patent: July 5, 2016Assignee: General Scientific CorporationInventor: Byung J. Chang
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Patent number: 9273836Abstract: A head-mounted light source particularly suited to medical and dental applications includes a base unit with a source of illumination directed through a distal opening in the base unit, and a plurality of interchangeable beam-forming units, each separately attachable to the distal opening of the base unit to produce a different light spot size at a given distance. The preferred embodiment includes a wide-field beam-forming unit, an intermediate beam-forming unit and a high-intensity beam-forming unit, such that the diameter of the spot size progressively decreases from the wide-field to the intermediate to the high-intensity unit. The interchangeable beam-forming units are attached to the base unit through a threaded connection. Each interchangeable beam-forming unit may itself include a distal threaded connection for attachment of a UV or other filter. In the preferred embodiment, the base unit includes a clip adapted for attachment to an ocular mounting assembly.Type: GrantFiled: July 30, 2009Date of Patent: March 1, 2016Assignee: General Scientific CorporationInventor: Byung J. Chang
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Patent number: 9052455Abstract: An improved head-mounted optical illuminator or magnifier of the type worn by a medical or dental professional includes an optical coating applied to one or more optical surfaces associated with the illuminator or magnifier, and wherein the optical coating is a rejection coating operative to blocks wavelengths in the green, blue, violet and/or ultraviolet portions of the electromagnetic spectrum, depending upon the embodiment. Short-wavelength coatings (blue/violet/uv) may be applied to the surface of a lens used in a head-worn illuminator, for example to the beam-forming optics. The head-worn illuminator may be an LED illuminator, xenon illuminator, or other high-intensity source. In the case of the green notch filter coatings, these would typically only be applied to a head-worn magnifier, including flip-up and through-the-lens styles. In all embodiments, the optical coating may be a multilayer dielectric coating, a holographic filter, or utilize other optical filter technology.Type: GrantFiled: June 18, 2012Date of Patent: June 9, 2015Assignee: General Scientific CorporationInventor: Byung J. Chang
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Publication number: 20150146290Abstract: Dental/medical/surgical loupes have an improved declination angle to reduce neck and back strain. Eyeglass frames are provided with carrier lenses having bottom edges. A hole is provided in each carrier lens, each hole having an outer periphery that extends below the bottom edge of the carrier lens, resulting in a pair of opposing pointed ends. A pair of ocular devices are cemented in a respective one of the holes, such that a portion of the ocular body also extends below the bottom edge of the carrier lens. Each ocular is then cemented or otherwise permanently affixed into position to achieve a desired declination angle. For added stability, a pair of holes may be formed into the body of each ocular, each pair of holes being physically aligned with the two opposing pointed ends of the carrier lens associated with that ocular.Type: ApplicationFiled: November 26, 2014Publication date: May 28, 2015Inventor: Byung J. Chang
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Patent number: 8964291Abstract: An ocular mounting assembly with mechanical stabilization includes a housing with a through-bore having an interior and opposing open ends, the interior of the through-bore being defined in part by an upper wall having a lower surface interior to the through-bore, and a lower wall having an upper surface interior to the through-bore. A pair of support arms are provided, each arm being slidingly received by a respective one of the open ends of the through-bore of the housing. A pair of stabilizing bodies are also provided, each body being positioned between a respecting one of the support arms and the interior of the housing. In contrast to existing designs, both stabilizing bodies are either positioned between a support arm and the lower surface of the upper wall of the housing, or between a support arm and the upper surface of the lower wall of the housing.Type: GrantFiled: August 9, 2012Date of Patent: February 24, 2015Assignee: General Scientific CorporationInventor: Byung J. Chang
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Publication number: 20150003048Abstract: A headlight incorporates an infrared sensor enabling the light to be turned ON and OFF without physical contact. The system includes a light source and a mechanism for coupling the light source to eyeglass frames or to a headband. A power supply and control unit is disposed remotely from the light source and is interconnected to the light source through an electrical cable. An infrared (IR) motion sensor is interconnected to the power supply and control unit, and electrical circuitry within the power supply and control unit is operative to turn the light source ON and OFF is response to the detection of a hand or other body part by the sensor. In the preferred embodiment, the light source includes a light-emitting diode (LED), and the IR detector is a passive IR pyroelectric sensor. The IR sensor may be attached to clothing, eyeglass frames, a headband, or the light source itself.Type: ApplicationFiled: June 27, 2013Publication date: January 1, 2015Applicant: General Scientific CorporationInventor: Byung J. Chang
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Publication number: 20150003049Abstract: A headlight incorporates an infrared sensor enabling the light to be turned ON and OFF without physical contact. The system includes a light source and a mechanism for coupling the light source to eyeglass frames or to a headband. A power supply and control unit is disposed remotely from the light source and is interconnected to the light source through an electrical cable. An infrared (IR) motion sensor is interconnected to the power supply and control unit, and electrical circuitry within the power supply and control unit is operative to turn the light source ON and OFF is response to the detection of a hand or other body part by the sensor. In the preferred embodiment, the light source includes a light-emitting diode (LED), and the IR detector is user-adjustable to set the ON/OFF activation distance in accordance with user preferences.Type: ApplicationFiled: June 12, 2014Publication date: January 1, 2015Inventor: Byung J. Chang
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Patent number: 8913318Abstract: In an ocular support assembly material present in the forward-looking cross-section of the outwardly extending support arms is removed, thereby reducing visual obscuration and enhancing peripheral vision. In the preferred embodiment, the top of each outwardly extending support arm is at or below the middle of the height of the housing, thereby resulting in a low-profile design. At the same time, the support arms are received by the housing with sliding engagement on all sides, thereby eliminating the need for ball bearings or spacers to counteract twisting. The result is a lightweight yet highly stable ocular mounting assembly.Type: GrantFiled: August 30, 2010Date of Patent: December 16, 2014Assignee: General Scientific CorporationInventors: Thomas A Cummings, Byung J. Chang
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Publication number: 20140293588Abstract: An improved illuminator with an adjustable beam pattern to be worn by medical and dental professionals includes a housing, a light-emitting diode (LED) disposed in the housing outputting light through a distal opening in the housing, an achromatic doublet lens mounted in the opening in the housing, and a singlet lens disposed between the LED and the achromatic lens. The distance between the singlet lens and the doublet lens may be adjustable, and/or distance between the LED and the singlet lens may be adjustable, through a threaded connections, for example. In the preferred embodiment, the achromatic doublet lens, the singlet lens, or both the singlet and the doublet lens have a planar surface. A conical mirror may be disposed between the LED and the singlet lens to increase the light collection efficiency of the LED.Type: ApplicationFiled: June 12, 2014Publication date: October 2, 2014Inventor: Byung J. Chang
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Publication number: 20140247582Abstract: An improved illuminator with an adjustable beam pattern to be worn by medical and dental professionals includes a housing, a light-emitting diode (LED) disposed in the housing outputting light through a distal opening in the housing, an achromatic doublet lens mounted in the opening in the housing, and a singlet lens disposed between the LED and the achromatic lens. The distance between the singlet lens and the doublet lens may be adjustable, and/or distance between the LED and the singlet lens may be adjustable, through a threaded connections, for example. In the preferred embodiment, the achromatic doublet lens, the singlet lens, or both the singlet and the doublet lens have a planar surface. A conical mirror may be disposed between the LED and the singlet lens to increase the light collection efficiency of the LED.Type: ApplicationFiled: March 3, 2014Publication date: September 4, 2014Applicant: GENERAL SCIENTIFIC CORPORATIONInventor: Byung J. Chang
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Patent number: 8662709Abstract: An improved illuminator with an adjustable beam pattern to be worn by medical and dental professionals includes a housing, a light-emitting diode (LED) disposed in the housing outputting light through a distal opening in the housing, an achromatic doublet lens mounted in the opening in the housing, and a singlet lens disposed between the LED and the achromatic lens. The distance between the singlet lens and the doublet lens may be adjustable, and/or distance between the LED and the singlet lens may be adjustable, through a threaded connections, for example. In the preferred embodiment, the achromatic doublet lens, the singlet lens, or both the singlet and the doublet lens have a planar surface.Type: GrantFiled: August 24, 2011Date of Patent: March 4, 2014Assignee: General Scientific CorporationInventor: Byung J. Chang
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Publication number: 20130094081Abstract: An ocular mounting assembly with mechanical stabilization includes a housing with a through-bore having an interior and opposing open ends, the interior of the through-bore being defined in part by an upper wall having a lower surface interior to the through-bore, and a lower wall having an upper surface interior to the through-bore. A pair of support arms are provided, each arm being slidingly received by a respective one of the open ends of the through-bore of the housing. A pair of stabilizing bodies are also provided, each body being positioned between a respecting one of the support arms and the interior of the housing. In contrast to existing designs, both stabilizing bodies are either positioned between a support arm and the lower surface of the upper wall of the housing, or between a support arm and the upper surface of the lower wall of the housing.Type: ApplicationFiled: August 9, 2012Publication date: April 18, 2013Applicant: General Scientific CorporationInventor: Byung J. Chang
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Publication number: 20120320454Abstract: An improved head-mounted optical illuminator or magnifier of the type worn by a medical or dental professional includes an optical coating applied to one or more optical surfaces associated with the illuminator or magnifier, and wherein the optical coating is a rejection coating operative to blocks wavelengths in the green, blue, violet and/or ultraviolet portions of the electromagnetic spectrum, depending upon the embodiment. Short-wavelength coatings (blue/violet/uv) may be applied to the surface of a lens used in a head-worn illuminator, for example to the beam-forming optics. The head-worn illuminator may be an LED illuminator, xenon illuminator, or other high-intensity source. In the case of the green notch filter coatings, these would typically only be applied to a head-worn magnifier, including flip-up and through-the-lens styles. In all embodiments, the optical coating may be a multilayer dielectric coating, a holographic filter, or utilize other optical filter technology.Type: ApplicationFiled: June 18, 2012Publication date: December 20, 2012Applicant: General Scientific CorporationInventor: Byung J. Chang
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Publication number: 20120320568Abstract: A head-mounted light source particularly suited to medical and dental applications includes a plurality of light-emitting diodes (LEDs). The LEDs include at least one cool white LED; at least one warm white LED; and at least one red LED. By combining a cool white, warm white and red LED, a more natural spectrum is produced. In one preferred embodiment, the system includes a single cool white LED, a single warm white LED, and a single red LED. In an alternative embodiment, the system includes 3 warm white LEDs, 2 cool white LEDs and 2 red LEDs which may be arranged in a hexagonal close-packed pattern.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Applicant: General Scientific CorporationInventor: Byung J. Chang
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Patent number: 8120847Abstract: A medical/dental loupe assembly provides through-the-lens oculars with an inconspicuous interpupillary distance adjustment capability. The system includes a pair of lenses, each lens having a telemicroscopic ocular cemented therethrough, and an upper portion, one on each side of a wearer's nose. A generally horizontal slot is formed in the upper portion of one of the lenses, and a bridge member connects the upper portions of the two lenses. The bridge member has two ends, one end of which is coupled to the slot through a fastener that may be loosened and tightened, thereby allowing the distance between the oculars to be adjusted and locked into position in accordance with the interpupillary requirements of a user.Type: GrantFiled: May 14, 2009Date of Patent: February 21, 2012Assignee: General Scientific CorporationInventor: Byung J. Chang
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Publication number: 20110305007Abstract: An improved illuminator with an adjustable beam pattern to be worn by medical and dental professionals includes a housing, a light-emitting diode (LED) disposed in the housing outputting light through a distal opening in the housing, an achromatic doublet lens mounted in the opening in the housing, and a singlet lens disposed between the LED and the achromatic lens. The distance between the singlet lens and the doublet lens may be adjustable, and/or distance between the LED and the singlet lens may be adjustable, through a threaded connections, for example. In the preferred embodiment, the achromatic doublet lens, the singlet lens, or both the singlet and the doublet lens have a planar surface.Type: ApplicationFiled: August 24, 2011Publication date: December 15, 2011Inventor: Byung J. Chang
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Patent number: 8047684Abstract: An improved illuminator with an adjustable beam pattern to be worn by medical and dental professionals includes a housing, a light-emitting diode (LED) disposed in the housing outputting light through a distal opening in the housing, an achromatic doublet lens mounted in the opening in the housing, and a singlet lens disposed between the LED and the achromatic lens. The distance between the singlet lens and the doublet lens may be adjustable, and/or distance between the LED and the singlet lens may be adjustable, through a threaded connections, for example.Type: GrantFiled: November 23, 2009Date of Patent: November 1, 2011Assignee: General Scientific CorporationInventor: Byung J. Chang
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Patent number: D649571Type: GrantFiled: March 30, 2011Date of Patent: November 29, 2011Assignee: General Scientific CorporationInventors: Thomas A Cummings, Byung J. Chang
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Patent number: D682450Type: GrantFiled: February 8, 2012Date of Patent: May 14, 2013Assignee: General Scientific CorporationInventor: Byung J. Chang
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Patent number: D746354Type: GrantFiled: January 30, 2014Date of Patent: December 29, 2015Assignee: General Scientific CorporationInventor: Byung J. Chang