Patents by Inventor Byung Jin Chang
Byung Jin 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: 11112090Abstract: A head-mountable light includes a user-adjustable spot size. Light from an LED travels through beam-forming optical elements supported at the front opening of a housing to form a spot of light at a working distance. An adjustable iris, situated between the LED and the beam forming optical elements, enables a user to adjust the iris and vary the size of the aperture and the spot size of the light at the working distance. The manually operated iris size control may comprise a rotatable ring on the exterior of the housing, and the plurality of beam-forming optical elements may comprise a singlet lens followed by a doublet lens. The light from the LED strikes the beam-dispersing element directly without an intervening condensing optical element (i.e., condensing lens). The assembly further includes a mechanical connector adapted to couple the housing to a pair of eyeglass frames, headband or other head-worn structure.Type: GrantFiled: August 7, 2020Date of Patent: September 7, 2021Assignee: General Scientific Corp./SurgitelInventor: Byung Jin Chang
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Patent number: 8068169Abstract: A video camera system includes a mount with a clip-on structure adapted for attachment to a pair of eyeglass frames, loupes, or a headband. The preferred embodiment includes a camera mounted on a first pivot arm, and a light source mounted on a second pivot arm. One or both of the pivot arms are rotatable, enabling the beam from the light source and field of view of the camera to be aligned for a given working distance. Polarizing filters may be mounted to the camera, light source, or both to control glare, reflection or other undesired visual artifacts.Type: GrantFiled: April 27, 2007Date of Patent: November 29, 2011Assignee: General Scientific CorporationInventor: Byung Jin Chang
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Publication number: 20110013277Abstract: 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: ApplicationFiled: August 30, 2010Publication date: January 20, 2011Applicant: General Scientific CorporationInventors: Thomas Cummings, Byung Jin Chang
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Patent number: 7791798Abstract: 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: June 8, 2006Date of Patent: September 7, 2010Assignee: General Scientific CorporationInventors: Thomas Cummings, Byung Jin Chang
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Patent number: 7673989Abstract: An improvement upon telemicroscopic loupes of the type which are adjustably mounted to an eyeglass frame, headmount or through-lens designs. The preferred embodiment includes a cap including an optical element to adjust for the working distance of a loupe. The cap may be frictionally fit onto the loupe or threadably attached to the loupe body. According to an alternative embodiment, one or more eyepiece components may be used alone or in combination with the end cap for adjusting prescription and/or working distance.Type: GrantFiled: February 3, 2006Date of Patent: March 9, 2010Assignee: General Scientific CorporationInventor: Byung Jin Chang
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Patent number: 7641335Abstract: The entire front portion of eyeglass frames for medical, surgical or dental applications are constructed from a solid piece of machined metal, preferably titanium. This results in no welding of the nose bridge, resulting in a one-piece frame that is substantially more stable than existing designs. In a preferred embodiment, the basic shape is cast or stamped from plate stock from titanium, then machined down, if necessary, to a desired finished product. Holes are provided on the bridge portion for the mounting of medical, surgical or dental optics or other accessories.Type: GrantFiled: February 3, 2006Date of Patent: January 5, 2010Assignee: General Scientific CorporationInventor: Byung Jin Chang
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Patent number: 7465078Abstract: A heat-dissipating headlamp assembly comprises a housing including a light source such as a light-emitting diode (LED) disposed therein, and a detachable heat shroud covering the rearward portion of the housing. In the preferred embodiment the housing includes a pair of opposing detents, and the detachable heat shroud includes a pair of opposing protrusions that cooperate with the detents to hold the shroud in position. The assembly further includes a mounting bracket extending downwardly from the rearward portion for attachment to a headband, spectacle frames, or other head-worn item, and the heat shroud includes an upper rearward notch to accommodate the electrical cable connected to the light source and a lower rearward notch to accommodate the mounting bracket. The heat shroud is generally cylindrical in shape, and so, too, is the housing, at least where the heat shroud attaches thereto.Type: GrantFiled: November 1, 2006Date of Patent: December 16, 2008Assignee: General Scientific CorporationInventor: Byung Jin Chang
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Publication number: 20080204589Abstract: A video camera system includes a mount with a clip-on structure adapted for attachment to a pair of eyeglass frames, loupes, or a headband. The preferred embodiment includes a camera mounted on a first pivot arm, and a light source mounted on a second pivot arm. One or both of the pivot arms are rotatable, enabling the beam from the light source and field of view of the camera to be aligned for a given working distance. Polarizing filters may be mounted to the camera, light source, or both to control glare, reflection or other undesired visual artifacts.Type: ApplicationFiled: April 27, 2007Publication date: August 28, 2008Inventor: Byung Jin Chang
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Publication number: 20070285772Abstract: 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: ApplicationFiled: June 8, 2006Publication date: December 13, 2007Inventors: Thomas Cummings, Byung Jin Chang
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Patent number: 6513929Abstract: Ergonomic eyeglass frames are particularly suited to surgical, medical and dental applications. A set of eyeglass frames having a temple portion and lenses arranged in a plane, whereby the angle between the temple portion and the lens plane defines a pantascoptic angle. A pair of surgical telescopes or loupes are mounted through a lower portion of one of the respective eyeglass frames, with the pantascoptic angle preferably being 80 degrees or less to provide a more stable physical mounting of the telescope or loupe through the lower portion of each lens element.Type: GrantFiled: May 20, 2002Date of Patent: February 4, 2003Inventor: Byung Jin Chang
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Patent number: 6493136Abstract: An optical accessory of the type used by medical professionals is coupled to a clip-on mount, enabling the assembly to be used with ordinary eyeglass frames. The assembly may be used with specialized frames, in which case the clip-on mount may be removed for a more permanent mounting of the assembly directly to the bridge area of the eyeglass frames. In different implementations, optical accessories in the form of ocular loupes, head lamps, and miniaturized video cameras may be accommodated according to the invention.Type: GrantFiled: March 7, 2001Date of Patent: December 10, 2002Assignee: General Scientific Corp.Inventors: Byung Jin Chang, Thomas A. Cummings
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Publication number: 20020159024Abstract: Ergonomic eyeglass frames are particularly suited to surgical, medical and dental applications. A set of eyeglass frames having a temple portion and lenses arranged in a plane, whereby the angle between the temple portion and the lens plane defines a pantascoptic angle. A pair of surgical telescopes or loupes are mounted through a lower portion of one of the respective eyeglass frames, with the pantascoptic angle preferably being 80 degrees or less to provide a more stable physical mounting of the telescope or loupe through the lower portion of each lens element.Type: ApplicationFiled: May 20, 2002Publication date: October 31, 2002Inventor: Byung Jin Chang
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Publication number: 20020126255Abstract: Ergonomic eyeglass frames are particularly suited to surgical, medical and dental applications. A set of eyeglass frames having a temple portion and lenses arranged in a plane, whereby the angle between the temple portion and the lens plane defines a pantascoptic angle. A pair of surgical telescopes or loupes are mounted through a lower portion of one of the respective eyeglass frames, with the pantascoptic angle preferably being 80 degrees or less to provide a more stable physical mounting of the telescope or loupe through the lower portion of each lens element.Type: ApplicationFiled: March 7, 2001Publication date: September 12, 2002Inventor: Byung Jin Chang
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Publication number: 20020126376Abstract: An optical accessory of the type used by medical professionals is coupled to a clip-on mount, enabling the assembly to be used with ordinary eyeglass frames. The assembly may be used with specialized frames, in which case the clip-on mount may be removed for a more permanent mounting of the assembly directly to the bridge area of the eyeglass frames. In different implementations, optical accessories in the form of ocular loupes, head lamps, and miniaturized video cameras may be accommodated according to the invention.Type: ApplicationFiled: March 7, 2001Publication date: September 12, 2002Inventors: Byung Jin Chang, Thomas A. Cummings
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Patent number: 6369964Abstract: Viewing apparatus, for medical and surgical practitioners incorporating one or more optical filters, each exhibiting a reverse photopic response, such that green light is at least partially attenuated, whereas red and blue light are both substantially transmitted. The invention includes means for supporting one or more optical filters in the practitioner's field of view, such as a pair of eyeglass frames or endoscope mounting for use, for example, in conjunction with laparoscopic surgery. Various technologies may be employed to realize a desired reverse photopic response, including absorptive dyes, dielectric layers, and/or holograms.Type: GrantFiled: September 4, 1998Date of Patent: April 9, 2002Assignee: General Scientific CorporationInventor: Byung Jin Chang
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Patent number: 6340228Abstract: A formable nose pad distributes the weight of eyeglasses and accessories supported by the eyeglass frames over a large area of the wearer's nose. The nose pad has two inner tabs that can be formed to fit the wearer's nose, outer tabs that can be formed to fit the undersides of the eyeglass lenses and a flange through which the nose pad is attached to the eyeglass bridge. Slotted screw holes on the flange allow for height adjustment to fit the height of the wearer's nose.Type: GrantFiled: August 24, 2000Date of Patent: January 22, 2002Assignee: General Scientific CorporationInventors: Thomas A. Cummings, David Nowak, Byung Jin Chang
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Patent number: 6333814Abstract: An improved ocular mounting assembly having a pair of ocular support arms which can be extended by sliding out of a box-section assembly housing for supporting a pair of ocular devices attached to the ends of the support arms. The improvement is a pair of stabilizers disposed inside the assembly housing and providing stability against rotational motion when the arms are extended. In one embodiment, the stabilizers are interference-fitted balls, retained in position by retainer holes in the assembly housing, and receding into recess cut-outs at the end of the support arms when the arms are fully retracted. In an alternate embodiment, the stabilizers are L-shaped, and can be either an integral part of the housing or bonded to it with adhesive.Type: GrantFiled: May 26, 2000Date of Patent: December 25, 2001Assignee: General Scientific CorporationInventors: Byung Jin Chang, Thomas Cummings
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Patent number: 6039461Abstract: A compact, high-intensity light assembly including a substantially hollow shell having a distal end from which the light emerges and a proximal end into which a base unit inserts. A lamp guide holds the light source in a central position within the shell using a spring which urges a rear portion of the lamp guide against an annular seating lip on the base unit. The lamp guide preferably includes a necked-down portion having an inner surface which makes holding contact with the outer surface of the light source, and an outer surface including heat-radiating features. In a preferred embodiment, the base unit is insertable into the proximal end of the shell by way of a threaded connection, enabling the lamp guide and light source to be adjustably moved relative to the distal end of the shell so as to focus the light from the source into a preferred illumination area.Type: GrantFiled: September 11, 1998Date of Patent: March 21, 2000Assignee: General Scientific CorporationInventors: Tom Cummings, David Nowak, Byung Jin Chang
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Patent number: 5920371Abstract: A versatile optical mounting assembly utilizes a headband mount having a forward portion and a vertical member having upper and lower ends. The forward portion of the headband mount includes a slide assembly which receives the upper end of the vertical member, allowing the vertical member to be vertically adjusted and locked into place once a desired position is achieved. A multiple-degree-of freedom clamp assembly is further provided to connect the lower end of the vertical member to the top edge of the eyeglass frames, facilitating first and second rotational movements about separate axes. The invention may also be used in conjunction with an ocular mounting assembly, in which case a slide rail is centrally attached to the eyeglass frames at a point proximate to where the clamp assembly connects the lower end of the vertical member to the top edge of the eyeglass frames.Type: GrantFiled: July 11, 1997Date of Patent: July 6, 1999Inventors: Byung Jin Chang, David Nowak
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Patent number: 5870166Abstract: An optical mounting assembly includes a frame, preferably in the form of a shaped wire form, having a proximal section attachable to a headband or to the bridge portion of a pair of eyeglass frames, a mid-section extending downwardly along and in spaced-apart conformity with the ridge of a user's nose, and a distal section which is bent upwardly with respect to the mid section. Optionally, the mid-section may include an adjustable nose pad which is adapted to make contact against the ridge of the user's nose. This provides for improved weight distribution, with the distal section being configured to mountably receive one of a variety of accessories such as light sources, imaging apparatus, face shields, etc.Type: GrantFiled: February 25, 1997Date of Patent: February 9, 1999Inventors: Byung Jin Chang, David Nowak