Patents by Inventor Chi Tang
Chi Tang 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: 11906710Abstract: An image capturing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element with refractive power has a concave image-side surface. The fourth lens element has refractive power, and at least one surface thereof is aspheric. The fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, and the surfaces thereof are aspheric. The sixth lens element with refractive power has a convex object-side surface, and an image-side surface changing from concave at a paraxial region thereof to convex at a peripheral region thereof, and the surfaces are aspheric.Type: GrantFiled: December 30, 2022Date of Patent: February 20, 2024Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Tsung-Han Tsai, Hsin-Hsuan Huang
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Publication number: 20240053588Abstract: A folded optical system includes an optical folding assembly and lens elements. The optical folding assembly has a first transmissive surface, a first reflective surface, a second reflective surface substantially the same interface as the first transmissive surface, a third reflective surface and a second transmissive surface sequentially along an optical path. The optical path reaches the first reflective surface via the first transmissive surface along a first optical axis to be sequentially redirected to a second optical axis, a third optical axis, and a fourth optical axis respectively by the first reflective surface, the second reflective surface, and the third reflective surface and reaches an image surface via the second transmissive surface. The lens elements at least include a first lens element located on the first optical axis. The first lens element with positive refractive power has a light incident surface being convex in a paraxial region thereof.Type: ApplicationFiled: September 19, 2022Publication date: February 15, 2024Applicant: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi TANG, I-Hsuan CHEN, Hsin-Hsuan HUANG
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Patent number: 11899350Abstract: A wavelength conversion module including a wavelength conversion wheel, a driver, and a weight member is provided. The wavelength conversion wheel includes a rotating plate, and the rotating plate has a first side and a second side opposite to each other. The driver is connected to the first side of the rotating plate, and drives the rotating plate to rotate around a rotation shaft of the driver as an axis. The weight member is attached to the second side of the rotating plate and rotates synchronously with the rotating plate. The rotating plate comprises a heat insulation region and a heat dissipation region. The heat insulation region and the heat dissipation region do not overlap each other. The heat insulation region comprises a first heat insulation region located at the first side and a second heat insulation region located at the second side.Type: GrantFiled: December 21, 2021Date of Patent: February 13, 2024Assignee: Coretronic CorporationInventors: Pi-Tsung Hsu, Chi-Tang Hsieh
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Publication number: 20240045176Abstract: An optical imaging system includes, in order from an object side to an image side: a first lens element having positive refractive power, a second lens element having negative refractive power, a third lens element, a fourth lens element, a fifth lens element having both an object-side surface and an image-side surface being aspheric, and a sixth lens element having both an object-side surface and an image-side surface being aspheric, wherein the optical imaging system has a total of six lens elements; at least one lens element among the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, and the sixth lens element has at least one inflection point.Type: ApplicationFiled: September 12, 2023Publication date: February 8, 2024Inventors: Hsiang-Chi Tang, Hsin-Hsuan Hunag
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Patent number: 11886102Abstract: An illumination system, configured to provide an illumination beam, is provided. The illumination system includes a first excitation light source, a wavelength conversion element, and a controller. The first excitation light source is configured to provide a first excitation beam. The wavelength conversion element is located on a transmission path of the first excitation beam. The wavelength conversion element includes multiple wavelength conversion regions and multiple non-wavelength conversion regions. The controller controls whether the first excitation light source emits light. During a first time interval, the controller turns off the first excitation light source. During a second time interval, the controller controls the first excitation light source to emit light. The first excitation beam is transmitted to one of the wavelength conversion regions to form a converted beam. The illumination beam includes the converted beam. Another illumination system and multiple projection devices are also provided.Type: GrantFiled: April 15, 2021Date of Patent: January 30, 2024Assignee: Coretronic CorporationInventors: Chi-Tang Hsieh, Chih-Hsien Tsai, Mei-Chun Shih, Wei-Chen Hsiao, Shun-Tai Chen
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Publication number: 20240027880Abstract: An imaging lens assembly module has an optical axis, and includes a lens barrel and an optical element set. The lens barrel includes an object-side portion, a tubular portion and a tip-end minimal aperture. The object-side portion includes a first assembling surface. The tubular portion includes a plurality of second assembling surfaces. The optical element set includes at least one light blocking sheet and at least one optical lens element. The light blocking sheet includes an object-side surface, an image-side surface and an inner opening surface. The optical lens element includes an optical effective portion and a peripheral portion. The object-side portion of the lens barrel includes a first reversing inclined surface gradually enlarged from the tip-end minimal aperture to the image side of the lens barrel, and the first reversing inclined surface is not contacted with the optical element set.Type: ApplicationFiled: October 3, 2023Publication date: January 25, 2024Inventors: Kuan-Ming CHEN, Hsiang-Chi TANG, Lin-An CHANG, Cheng-Chen LIN, Ming-Ta CHOU
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Patent number: 11860527Abstract: An illumination system including an excitation light source array, a multi-region dichroic device, a color sequence generator, and a wavelength converter is provided. The excitation light source array emits excitation light beams. The multi-region dichroic device has first dichroic regions and non-dichroic regions that are alternately arranged in stripe shapes. The first dichroic regions are respectively disposed on transmission paths of the excitation light beams. The excitation light beams from the excitation light source array are transmitted to the color sequence generator through the first dichroic regions of the multi-region dichroic device, and at least one second dichroic region of the color sequence generator respectively reflects the excitation light beams to the non-dichroic regions of the multi-region dichroic device. The excitation light beams from the color sequence generator are transmitted to the wavelength converter through the non-dichroic regions of the multi-region dichroic device.Type: GrantFiled: July 2, 2021Date of Patent: January 2, 2024Assignee: Coretronic CorporationInventors: Haw-Woei Pan, Jo-Han Hsu, Kuan-Ta Huang, Chi-Tang Hsieh
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Patent number: 11856378Abstract: A system with sound adjustment capability is provided. The system includes a head-mounted device, a first loudspeaker and a processor. The first loudspeaker is detachable from the head-mounted device. The processor is configured to detect a plurality of positions and a plurality of orientations of the head-mounted device and the first loudspeaker to determine whether the first loudspeaker is detached from the head-mounted device. The processor is further configured to modify a first audio signal by at least one first filter or at least one second filter to generate a filtered first audio signal. The at least one first filter is used when the first loudspeaker is coupled to the head-mounted device, and the at least one second filter is used when the first loudspeaker is detached from the head-mounted device. The filtered first audio signal is configured to drive the first loudspeaker.Type: GrantFiled: November 26, 2021Date of Patent: December 26, 2023Assignee: HTC CorporationInventors: Chun-Min Liao, Tsung-Yu Tsai, Chi-Tang Ho
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Patent number: 11841496Abstract: An optical processing turntable, a wavelength conversion module, and a projection apparatus are provided. The optical processing turntable includes a substrate and a driver assembly. The substrate has a fixing hole and a first side and a second side opposite to each other. The driver assembly passes through the fixing hole to be disposed on the substrate to drive the substrate to rotate. The driver assembly has two locking surfaces, where the two locking surfaces are respectively located on the first side and the second side of the substrate. In the projection apparatus using the optical processing turntable provided by the invention, noise generated by structural vibration may be effectively reduced, and a prolonged service life is provided.Type: GrantFiled: May 11, 2021Date of Patent: December 12, 2023Assignee: Coretronic CorporationInventors: Pi-Tsung Hsu, Chi-Tang Hsieh
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Publication number: 20230390882Abstract: Disclosed are a chemical mechanical polishing apparatus, a control method for the chemical mechanical polishing apparatus and a chemical mechanical polishing system. In one embodiment, the chemical mechanical polishing apparatus includes a polishing pad, a sensor, a polishing head and a conditioner. The sensor is configured to obtain surface roughness of the polishing pad. The polishing head is located above the polishing pad and configured to polish a wafer which is push against the polishing pad. The conditioner is located on the polishing pad and configured to recondition the polishing pad, wherein the conditioner is operated according to at least one polishing condition, and the polishing condition is tuned according to the surface roughness of the polishing pad.Type: ApplicationFiled: June 6, 2022Publication date: December 7, 2023Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Te-Chien Hou, Wen-Pin Liao, Chen-Chi Tang, Shich-Chang Suen, Kei-Wei Chen
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Patent number: 11835466Abstract: A process operable using a computerized system (300) grades the clarity of a diamond (315, 400) as a function of internal defects within its body (315, 400). The computerized system (300) includes an optical image acquisition device (310), a processor module (320) and an output module (340) operably interconnected together. The process includes the steps of (i) acquiring via an optical image acquisition device (310) a plurality of top view images of a diamond (315, 400); (ii) in a processor module (320), detecting defects within the body of the diamond (315, 400); and (iii) from an output module (340), providing a signal indicative of the clarity grade assigned in (ii).Type: GrantFiled: May 24, 2021Date of Patent: December 5, 2023Assignee: Goldway Technology LimitedInventors: Ka Wing Cheng, Kin Wing Wong, Kong Chan, Juan Cheng, Wing Chi Tang, Koon Chung Hui
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Patent number: 11822149Abstract: A plastic optical lens assembly includes a first lens element, a second lens element and a cementing glue coating. A first spacing section is located between a first optical effective portion and a first engaging structure. A second optical effective portion is disposed correspondingly to the first optical effective portion. A second spacing section is located between the second optical effective portion and a second engaging structure. The first engaging structure is engaged with the second engaging structure. A reference space is between the first and the second spacing section. The cementing glue coating is at least disposed between the first and the second optical effective portions, and the first and the second lens elements are cemented by the cementing glue coating.Type: GrantFiled: July 4, 2022Date of Patent: November 21, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsuan-Chin Huang, Hsiang-Chi Tang, Ming-Ta Chou
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Patent number: 11815791Abstract: An imaging lens assembly module has an optical axis, and includes a lens barrel and an optical element set. The lens barrel includes an object-side portion, a tubular portion and a tip-end minimal aperture. The object-side portion includes a first assembling surface. The tubular portion includes a plurality of second assembling surfaces. The optical element set includes at least one light blocking sheet and at least one optical lens element. The light blocking sheet includes an object-side surface, an image-side surface and an inner opening surface. The optical lens element includes an optical effective portion and a peripheral portion. The object-side portion of the lens barrel includes a first reversing inclined surface gradually enlarged from the tip-end minimal aperture to the image side of the lens barrel, and the first reversing inclined surface is not contacted with the optical element set.Type: GrantFiled: September 28, 2021Date of Patent: November 14, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ming Chen, Hsiang-Chi Tang, Lin-An Chang, Cheng-Chen Lin, Ming-Ta Chou
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Patent number: 11789244Abstract: An optical imaging system includes, in order from an object side to an image side: a first lens element having positive refractive power, a second lens element having negative refractive power, a third lens element, a fourth lens element, a fifth lens element having both an object-side surface and an image-side surface being aspheric, and a sixth lens element having both an object-side surface and an image-side surface being aspheric, wherein the optical imaging system has a total of six lens elements; at least one lens element among the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, and the sixth lens element has at least one inflection point.Type: GrantFiled: June 10, 2022Date of Patent: October 17, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Hsin-Hsuan Huang
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Patent number: 11789236Abstract: A photographing optical lens assembly includes seven lens elements, which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The second lens element has positive refractive power. The sixth lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The seventh lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof and including at least one convex critical point in an off-axis region thereof.Type: GrantFiled: April 20, 2021Date of Patent: October 17, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Chun-Yen Chen, Hung-Shuo Chen, Wei-Yu Chen
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Patent number: 11785198Abstract: A head-mounted device includes a plurality of front camera modules, a display device, an in-display camera module and an image-processing unit. The front camera modules include a first camera module and a second camera module that are respectively disposed at the left and right sides of the head-mounted device. The in-display camera module is disposed within the boundary of the display device. The image-processing unit is in communication connection with the front camera modules and the display device. The display device and the in-display camera module face a user side of the head-mounted device.Type: GrantFiled: September 16, 2021Date of Patent: October 10, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Fuh-Shyang Yang, Hsiang-Chi Tang, Tsung-Han Tsai, Hsin-Hsuan Huang
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Patent number: 11774830Abstract: A plastic barrel, which surrounds a central axis, includes an object-side portion and a tubular portion. The object-side portion includes an object-side opening and a reverse inclined structure. The reverse inclined structure surrounds the object-side opening and includes a reverse inclined surface and at least one annular concave structure. The at least one annular concave structure is disposed on an object side of the reverse inclined surface and recessed from the object-side opening along a direction away from the central axis, wherein a sectional surface of the at least one annular concave structure passing through the central axis includes a valley point and two concave ends, and the two concave ends are disposed on an object side and an image side of the valley point, respectively. The tubular portion is connected to the object-side portion and extends to the image side.Type: GrantFiled: February 25, 2022Date of Patent: October 3, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Feng Lin, Lin-An Chang, Hsiang-Chi Tang
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Patent number: 11768314Abstract: The invention provides a projection method and system. The method includes providing a first sensing group sensing a space and generating a first sensing result to determine whether a user is in an entering or exiting state relative to the space; providing a second sensing group sensing a first or second object in the space according to the first sensing result and generating a second sensing result; and generating a prompt information according to the second sensing result and displaying the prompt information. The system includes a first sensing group, a second sensing group, and a display device. The method and system of the invention sense the space according to the entering and exiting state of the user to effectively reduce the inspection steps of the user for the space, thereby effectively improving the safety of the space, and improving the operating convenience of the user of the space.Type: GrantFiled: June 23, 2021Date of Patent: September 26, 2023Assignee: Coretronic CorporationInventors: Chi-Tang Hsieh, Chih-Hsien Tsai, Yu-Hsien Wu
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Patent number: 11769342Abstract: An optical fingerprint identification system includes a base, a photo sensor, a light emitting layer and a cover. The photo sensor is disposed on the base. The light emitting layer is disposed above the photo sensor, and the light emitting layer includes a light emitting element. The cover is disposed above the light emitting layer. The optical fingerprint identification system further includes a light path adjusting element between the photo sensor and the cover. The light emitting element is disposed away from the light path adjusting element and the photo sensor in a sideway direction that is different from a stack direction of the optical fingerprint identification system.Type: GrantFiled: October 21, 2020Date of Patent: September 26, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Chun-Che Hsueh, Tsung-Han Tsai, Fuh-Shyang Yang
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Publication number: 20230288667Abstract: A photographing optical lens assembly includes five lens elements with refractive power, in order from an object side to an image side. The first lens element with refractive power has a convex object-side surface. The second lens element with positive refractive power has an object-side surface and an image-side surface both being aspheric. The third lens element has positive refractive power. The fourth lens element with refractive power has a concave object-side surface. The fifth lens element with refractive power has an object-side surface and a concave image-side surface with at least one inflection point, both the object-side surface and the image-side surface being aspheric.Type: ApplicationFiled: May 22, 2023Publication date: September 14, 2023Applicant: LARGAN PRECISION CO.,LTD.Inventors: Hsiang-Chi TANG, Ming-Ta CHOU