Patents by Inventor Kuang-Hsiang Chang
Kuang-Hsiang 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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Publication number: 20230213844Abstract: A projection apparatus, including an illumination system, a light valve, a first movable reflector, a first projection lens, a second projection lens, and a driving module, is provided. The illumination system is configured to provide an illumination light beam. The driving module is connected to the first movable reflector and is configured to drive the first movable reflector to move. The projection apparatus has a first projection mode and a second projection mode for being performed. In the first projection mode, the driving module controls the first movable reflector to move to a first position. In the second projection mode, the driving module controls the first movable reflector to move to a second position, and the first movable reflector is not located on a transmission path of an image light beam.Type: ApplicationFiled: December 28, 2022Publication date: July 6, 2023Applicant: Coretronic CorporationInventors: Jen-Yu Shie, Kuang-Hsiang Chang, Hung-Pin Chen, Heng Li
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Publication number: 20230015001Abstract: A projection apparatus including a projection device, a reflecting component, and an image capturing device is provided. The projection device is adapted to project an image light beam to form a projection image. The reflecting component is disposed on the projection device and has a reflecting surface. The image capturing device is disposed on the projection device and has an image capturing end. The image capturing end faces the reflecting surface. The reflecting surface is adapted to reflect the projection image to the image capturing end.Type: ApplicationFiled: July 12, 2022Publication date: January 19, 2023Applicant: Coretronic CorporationInventors: Jen-Yu Shie, Kuang-Hsiang Chang, Hung-Pin Chen, Heng Li
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Patent number: 11340517Abstract: A projection lens module and a projector are provided. The projector includes an optical engine and a projection lens module. The optical engine includes a casing, a light source, a light valve, and a prism, where the light source, the light valve, and the prism are disposed in the casing. The light source emits an illumination beam to the light valve. The light valve modulates the illumination beam to generate an image beam and projects the image beam to the projection lens module. The prism is disposed on an optical path of the image beam. The projection lens module is connected to the casing of the optical engine and is configured to project the image beam. The projection lens module includes a projection lens and a smooth picture actuator, where the smooth picture actuator is fixed to the projection lens and is located outside the optical engine.Type: GrantFiled: December 22, 2020Date of Patent: May 24, 2022Assignee: Coretronic CorporationInventors: Kuang-Hsiang Chang, Ching-Chuan Wei, Tsung-Hsin Liao
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Publication number: 20220100024Abstract: A light modulation module, including a liquid crystal on silicon (LCoS) display panel and a temperature adjustment module, is provided. The LCoS display panel is disposed on a transmission path of an illumination beam and is configured to modulate the illumination beam. The LCoS display panel is disposed in the temperature adjustment module, which includes a temperature sensing element and a temperature control element. The temperature sensing element is disposed next to the LCoS display panel and is configured to sense an ambient temperature of the LCoS display panel. The temperature control element is disposed next to the LCoS display panel and is coupled to the temperature sensing element. The temperature control element controls a temperature of the LCoS display panel according to the ambient temperature. A reflective projection device is also provided, which is applied with the light modulation module and has good reliability and good projection quality.Type: ApplicationFiled: September 23, 2021Publication date: March 31, 2022Applicant: Coretronic CorporationInventors: Heng Li, Kuang-Hsiang Chang, Pei-Cheng Liao, Jen-Yu Shie
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Publication number: 20220100065Abstract: An optomechanical module, including an optomechanical housing, a light source, and a display element, is provided. The optomechanical housing includes at least one heat-dissipation hole. The light source is configured to emit an illumination beam and is disposed in the optomechanical housing. The display element is disposed in the optomechanical housing, is located on a transmission path of the illumination beam, and is configured to convert the illumination beam into an image beam. When the optomechanical module operates, the light source generates heat, and the at least one heat-dissipation hole is configured to allow airflow to pass through, so as to dissipate the heat generated by the light source. A projector is also provided.Type: ApplicationFiled: September 17, 2021Publication date: March 31, 2022Applicant: Coretronic CorporationInventors: Kuang-Hsiang Chang, Wen-Hao Chu, Li-Wei Tseng
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Patent number: 11287731Abstract: An optical module and a projector having the optical module are provided. The optical module includes a bracket, a driving component, an optical component, and a light guide element. The optical component is movably disposed on the bracket and is located on a transmission path of an image beam. The driving component is disposed between the bracket and the optical component and is configured to drive the optical component to oscillate. The light guide element is disposed at the bracket and located on the transmission path of the image beam. Here, the assembly of the optical module and the projector is easy, and the assembly yield is high.Type: GrantFiled: December 18, 2020Date of Patent: March 29, 2022Assignee: Coretronic CorporationInventors: Jen-Yu Shie, Kuang-Hsiang Chang, Pei-Cheng Liao, Heng Li
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Patent number: 11163221Abstract: The invention provides a projection device which includes a rotating module and an imaging module. The rotating module is assembled on a mounting surface and includes a rotating part and an assembling part which are integrally formed. The rotating part is parallel to the mounting surface, and the assembling part is perpendicular to the mounting surface. The imaging module is assembled on the assembling part of the rotating module. When the rotating module rotates by taking an axis perpendicular to the mounting surface as an axial center, the rotating module drives the imaging module to rotate so as to change a projection direction of the imaging module. The projection device of the invention adjusts the projection direction without using a tool.Type: GrantFiled: June 11, 2020Date of Patent: November 2, 2021Assignee: Coretronic CorporationInventors: Jen-Yu Shie, Kuang-Hsiang Chang, Heng Li, Pei-Cheng Liao
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Publication number: 20210199932Abstract: A projection lens module and a projector are provided. The projector includes an optical engine and a projection lens module. The optical engine includes a casing, a light source, a light valve, and a prism, where the light source, the light valve, and the prism are disposed in the casing. The light source emits an illumination beam to the light valve. The light valve modulates the illumination beam to generate an image beam and projects the image beam to the projection lens module. The prism is disposed on an optical path of the image beam. The projection lens module is connected to the casing of the optical engine and is configured to project the image beam. The projection lens module includes a projection lens and a smooth picture actuator, where the smooth picture actuator is fixed to the projection lens and is located outside the optical engine.Type: ApplicationFiled: December 22, 2020Publication date: July 1, 2021Applicant: Coretronic CorporationInventors: Kuang-Hsiang Chang, Ching-Chuan Wei, Tsung-Hsin Liao
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Publication number: 20210191245Abstract: An optical module and a projector having the optical module are provided. The optical module includes a bracket, a driving component, an optical component, and a light guide element. The optical component is movably disposed on the bracket and is located on a transmission path of an image beam. The driving component is disposed between the bracket and the optical component and is configured to drive the optical component to oscillate. The light guide element is disposed at the bracket and located on the transmission path of the image beam. Here, the assembly of the optical module and the projector is easy, and the assembly yield is high.Type: ApplicationFiled: December 18, 2020Publication date: June 24, 2021Applicant: Coretronic CorporationInventors: Jen-Yu Shie, Kuang-Hsiang Chang, Pei-Cheng Liao, Heng Li
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Publication number: 20200393745Abstract: The invention provides a projection device which includes a rotating module and an imaging module. The rotating module is assembled on a mounting surface and includes a rotating part and an assembling part which are integrally formed. The rotating part is parallel to the mounting surface, and the assembling part is perpendicular to the mounting surface. The imaging module is assembled on the assembling part of the rotating module. When the rotating module rotates by taking an axis perpendicular to the mounting surface as an axial center, the rotating module drives the imaging module to rotate so as to change a projection direction of the imaging module. The projection device of the invention adjusts the projection direction without using a tool.Type: ApplicationFiled: June 11, 2020Publication date: December 17, 2020Applicant: Coretronic CorporationInventors: Jen-Yu Shie, Kuang-Hsiang Chang, Heng Li, Pei-Cheng Liao
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Patent number: 10670950Abstract: A transparent rotating device comprising a shaft, a transparent rotating assembly and a motor is provided. The transparent rotating assembly includes at least one first transparent sheet and at least one second transparent sheet that are annularly and alternatively arranged around a shaft. A motor is connected to the shaft, wherein the first transparent sheet and the second transparent sheet sequentially enter the transmission path of the image beam. The angle at which the first transparent sheet is inclined with respect to the shaft is different from the angle at which the second transparent sheet is inclined with respect to the shaft. The image beam penetrates the first transparent sheet to be deflected and transmitted to a first position, and the image beam penetrates the second transparent sheet to be deflected and transmitted to a second position.Type: GrantFiled: August 12, 2019Date of Patent: June 2, 2020Assignee: Coretronic CorporationInventors: Pei-Cheng Liao, Kuang-Hsiang Chang, Heng Li, Yun-Sheng Wang
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Publication number: 20200050090Abstract: A transparent rotating device comprising a shaft, a transparent rotating assembly and a motor is provided. The transparent rotating assembly includes at least one first transparent sheet and at least one second transparent sheet that are annularly and alternatively arranged around a shaft. A motor is connected to the shaft, wherein the first transparent sheet and the second transparent sheet sequentially enter the transmission path of the image beam. The angle at which the first transparent sheet is inclined with respect to the shaft is different from the angle at which the second transparent sheet is inclined with respect to the shaft. The image beam penetrates the first transparent sheet to be deflected and transmitted to a first position, and the image beam penetrates the second transparent sheet to be deflected and transmitted to a second position.Type: ApplicationFiled: August 12, 2019Publication date: February 13, 2020Applicant: Coretronic CorporationInventors: Pei-Cheng Liao, Kuang-Hsiang Chang, Heng Li, Yun-Sheng Wang
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Publication number: 20050147875Abstract: A battery holder includes a casing, a set of engaging structures, and a baffle plate. The casing has a first surface and an opposed second surface flatter than the first one, and the second surface is formed with an opening at its central location and two apertures at its end. The set of engaging structures is formed on the second surface of the casing, and the baffle plate is pivotally supported on the engaging structures. The baffle plate is formed with a central projection at its central location and two end projections at its end. While the baffle plate is mounted on the second surface of the casing, the central projection is inserted into the casing through the opening and the end projections are inserted into the casing through the apertures.Type: ApplicationFiled: December 15, 2004Publication date: July 7, 2005Applicant: Microtek International Inc.Inventors: Shih-Heng Chang, Kuang-Hsiang Chang