Patents by Inventor Chun-Hua TSAI
Chun-Hua TSAI 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: 20230045146Abstract: An imaging lens system includes a lens barrel element and an imaging lens assembly disposed on the lens barrel element and including a first imaging lens element, a spacer element and a second imaging lens element. The spacer element has a second object-side contact surface corresponding to a first image-side contact surface of the first imaging lens element. The second imaging lens element has a third object-side contact surface corresponding to a second image-side contact surface of the spacer element. The lens barrel element and the spacer element form a buffer structure closer to an optical axis than the first image-side contact surface and including a first gap and a second gap located closer to the optical axis than the first gap. The first gap overlaps the third object-side contact surface in a direction parallel to the optical axis. A step difference is between the first and second gaps.Type: ApplicationFiled: November 2, 2021Publication date: February 9, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Hsuan-Chin HUANG, Lin An CHANG, Ming-Ta CHOU, Chun-Hua TSAI
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Publication number: 20220404583Abstract: The present disclosure provides an imaging lens assembly module including a baseplate and an imaging lens assembly. The imaging lens assembly includes an imaging lens set and a barrel. The imaging lens set includes at least one lens element. The at least one lens element includes two first trimmed surfaces. The barrel includes a barrel portion and a base portion. The barrel portion has a first inner surface, and the barrel portion includes two second trimmed surfaces. The barrel portion and the base portion are formed integrally, a shortest distance is defined between the first trimmed surfaces of the lens element, a shortest distance is defined between the second trimmed surfaces of the barrel portion, and the optical axis passes vertically through the shortest distance between the first trimmed surfaces and the shortest distance between the second trimmed surfaces.Type: ApplicationFiled: May 20, 2022Publication date: December 22, 2022Inventors: Chen-Wei FAN, Chun-Hua TSAI, Ming-Ta CHOU
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Patent number: 11506861Abstract: An imaging lens module with auto focus function includes an imaging lens assembly, an electromagnetic driving component assembly and a lens carrier. The imaging lens assembly has an optical axis. The electromagnetic driving component assembly drives the imaging lens assembly to move in a direction parallel to the optical axis by a Lorentz force. The imaging lens assembly is mounted to the lens carrier such that the imaging lens assembly can be wholly driven by the Lorentz force. The lens carrier includes an object-side part, a mounting structure and a plurality of plate portions. The object-side part includes a tip-end minimal aperture configured for light to travel through; and a tapered surface which surrounds an area tapered off from image side to object side. The mounting structure and the plate portions are configured for at least a part of the electromagnetic driving component assembly to be mounted thereto.Type: GrantFiled: December 2, 2019Date of Patent: November 22, 2022Assignee: LARGAN DIGITAL CO., LTD.Inventors: Chun-Hua Tsai, Ming-Ta Chou, Ming-Shun Chang
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Publication number: 20220365254Abstract: An imaging lens system includes a lens element and an aperture element surrounding an imaging optical path and forming an aperture. The aperture element includes a first conical surface, a second conical surface and a contact surface. The first and second conical surfaces surround the imaging optical path. The contact surface is perpendicular to the imaging optical path and contacts the lens element. When the imaging lens system is in a first environment condition, the first conical surface is in contact with the lens element, the second conical surface is spaced apart from the lens element, and the aperture is aligned with the optically effective region. When the imaging lens system is in a second environment condition, the second conical surface is in contact with the lens element, the first conical surface is spaced apart from the lens element, and the aperture is aligned with the optically effective region.Type: ApplicationFiled: July 7, 2021Publication date: November 17, 2022Applicant: LARGAN PRECISION CO., LTD.Inventors: Chun-Hua TSAI, Yu Chen LAI, Ming-Ta CHOU
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Publication number: 20220350105Abstract: An imaging lens assembly includes, in order from an object side to an image side, a first lens element and a second lens element. The first lens element includes a first frustum surface and a second frustum surface. The first frustum surface is disposed on a side of the first lens element facing towards the second lens element. The first frustum surface and the second frustum surface are disposed on the same side and coaxial, and the second frustum surface is closer to an optical axis than the first frustum surface to the optical axis. The second lens element includes a first corresponding frustum surface and a second corresponding frustum surface. The first corresponding frustum surface is corresponding to the first frustum surface. The second corresponding frustum surface is corresponding to the second frustum surface.Type: ApplicationFiled: February 9, 2022Publication date: November 3, 2022Inventors: Chun-Hua TSAI, Yu-Chen LAI, Ming-Ta CHOU
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Patent number: 11480755Abstract: An imaging lens module includes a plastic barrel, an optical lens assembly and a glue material. The plastic barrel includes an outer object-end surface, an outer image-end surface and an inner tube surface. The inner tube surface connects the outer object-end surface and the outer image-end surface, and includes a plurality of parallel inner surfaces. A plurality of stripe structures are disposed on and protruded from at least one of the parallel inner surfaces, wherein the stripe structures are regularly arranged along a circumferential direction of the parallel inner surface. The optical lens assembly includes a plurality of optical elements disposed in the plastic barrel and arranged along the optical axis, wherein an outer annular surface of at least one of the optical elements is disposed correspondingly to the stripe structures. The glue material is applied among the outer annular surface and the stripe structures.Type: GrantFiled: June 4, 2020Date of Patent: October 25, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Hua Tsai, Ming-Ta Chou, Ming-Shun Chang
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Publication number: 20220187560Abstract: An imaging lens system includes an imaging lens assembly, a spacer element and a retaining element. The spacer element is configured to maintain a distance between a first lens element and a second lens element of the imaging lens assembly. The spacer element includes a connecting part connected to the second lens element and a supporting part connected to the connecting part and extending from the connecting part towards an optical axis of the imaging lens assembly. The first lens element is disposed on the supporting part. The retaining element is configured to fix the first lens element to the supporting part. The retaining element includes a retaining surface, and the retaining surface and the first lens element are abutted against each other. There is an air gap between the retaining element and the first lens element, and the air gap is adjacent to the retaining surface.Type: ApplicationFiled: February 24, 2021Publication date: June 16, 2022Applicant: LARGAN PRECISION CO., LTD.Inventors: Chun-Hua TSAI, Lin An CHANG, Ming-Ta CHOU, Ming-Shun CHANG
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Publication number: 20220124233Abstract: An optical lens assembly includes at least one dual molded lens element. The dual molded lens element has a central axis, and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective region and a lens peripheral region, and the lens peripheral region surrounds the optical effective region. A light absorbing portion surrounds the optical effective region. The light transmitting portion and the light absorbing portion are made of different plastic materials with different colors, and the light absorbing portion includes at least three gate portions surrounding the central axis, wherein all gate portions are located on the same surface of the dual molded lens element. The light transmitting portion and the light absorbing portion of the dual molded lens element are integrally formed by the injection molding.Type: ApplicationFiled: December 28, 2021Publication date: April 21, 2022Inventors: Ming-Shun CHANG, Ming-Ta CHOU, Chun-Hua TSAI
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Publication number: 20220100057Abstract: An imaging lens assembly includes a plurality of plastic lens elements, a plastic lens barrel, a retaining element, a glue material and a first void structure. The plastic lens barrel includes a plate portion and a tube portion. The plate portion has a central hole, and an optical axis of the imaging lens assembly passing through the central hole. The tube portion is extended from the plate portion which is parallel with the optical axis and defining an inner space and the plastic lens elements is disposed in the inner space. The glue material is disposed between one of the plastic lens elements and the tube portion of the plastic lens barrel, and surrounds the one of the plastic lens elements. The first void structure is extended from the central hole to the tube portion. The plastic lens elements are including a first lens element.Type: ApplicationFiled: August 18, 2021Publication date: March 31, 2022Inventors: Heng-Yi SU, Ming-Ta CHOU, Chun-Hua TSAI, Ming-Shun CHANG
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Publication number: 20220057594Abstract: An imaging lens module includes an imaging lens assembly, an image sensor and a plastic lens barrel. The image sensor is disposed on an image side of the imaging lens assembly and has an image sensing surface through which an optical axis of the imaging lens assembly passes. The plastic lens barrel includes an object-end portion, a bottom portion, a first inner hole portion and a second inner hole portion. An object-end surface of the object-end portion faces towards an object side direction of the imaging lens assembly. A tapered surface of the object-end portion is tapered off towards the object-end surface. The bottom portion is located on an image side of the object-end portion. The imaging lens assembly is disposed in the first inner hole portion. The second inner hole portion located on an image side of the first inner hole portion and includes an optical aligning structure.Type: ApplicationFiled: November 4, 2021Publication date: February 24, 2022Applicant: LARGAN PRECISION CO., LTD.Inventors: Lin An CHANG, Ming-Ta CHOU, Chun-Hua TSAI
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Patent number: 11245824Abstract: An optical lens assembly includes at least one dual molded lens element. The dual molded lens element has a central axis, and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective region and a lens peripheral region, and the lens peripheral region surrounds the optical effective region. A light absorbing portion surrounds the optical effective region. The light transmitting portion and the light absorbing portion are made of different plastic materials with different colors, and the light absorbing portion includes at least three gate portions surrounding the central axis, wherein all gate portions are located on the same surface of the dual molded lens element. The light transmitting portion and the light absorbing portion of the dual molded lens element are integrally formed by the injection molding.Type: GrantFiled: September 18, 2019Date of Patent: February 8, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Ming-Shun Chang, Ming-Ta Chou, Chun-Hua Tsai
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Publication number: 20220026662Abstract: A plastic lens barrel includes an object-side portion, an image-side portion and a tube-shaped portion. The object-side portion is located close to an object side of the plastic lens barrel. The object-side portion includes an object-side opening and an object-side annular surface. The object-side annular surface surrounds the object-side opening and faces toward the object side. The image-side portion is located close to an image side of the plastic lens barrel and includes an image-side opening. The tube-shaped portion surrounds an optical axis. The tube-shaped portion is connected between the object-side portion and the image-side portion, and configured to define an inner space. The object-side annular surface includes a groove structure area. The groove structure area includes a plurality of groove structures. The groove structures are disposed in at least one of an arranging manner and an extending manner along a sagittal direction away from the optical axis.Type: ApplicationFiled: October 12, 2021Publication date: January 27, 2022Inventors: Chun-Hua TSAI, Ming-Ta CHOU, Lin-An CHANG
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Publication number: 20210405317Abstract: An imaging lens assembly includes a plastic barrel and a lens element set. The lens element set is disposed in the plastic barrel and has an optical axis. The lens element set includes an object-side lens element and an image-side lens element. The object-side lens element has an outer diameter surface and an optical effective portion, and includes a conical-aligning surface located on an image-side surface of the object-side lens element and for coaxially aligning and connecting the image-side lens element.Type: ApplicationFiled: September 14, 2021Publication date: December 30, 2021Inventors: Yeo-Chih HUANG, Chun-Hua TSAI
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Patent number: 11199677Abstract: An imaging lens module includes an imaging lens assembly, an image sensor and a plastic lens barrel. The image sensor is disposed on an image side of the imaging lens assembly and has an image sensing surface through which an optical axis of the imaging lens assembly passes. The plastic lens barrel includes an object-end portion, a bottom portion, a first inner hole portion and a second inner hole portion. An object-end surface of the object-end portion faces towards an object side direction of the imaging lens assembly. A tapered surface of the object-end portion is tapered off towards the object-end surface. The bottom portion is located on an image side of the object-end portion. The imaging lens assembly is disposed in the first inner hole portion. The second inner hole portion located on an image side of the first inner hole portion and includes an optical aligning structure.Type: GrantFiled: April 20, 2020Date of Patent: December 14, 2021Assignee: LARGAN PRECISION CO., LTD.Inventors: Lin An Chang, Ming-Ta Chou, Chun-Hua Tsai
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Publication number: 20210382376Abstract: A camera module includes an imaging lens assembly and an image sensor, wherein the image sensor is located on an image side of the imaging lens assembly. The imaging lens assembly has an optical axis and includes a plastic lens barrel and a plurality of plastic lens elements, wherein the plastic lens elements are disposed in the plastic lens barrel. The plastic lens barrel includes an object-side outer surface, a lens barrel minimum opening, an object-side outer inclined surface and a reversing inclined surface. The object-side outer surface is a surface of the plastic lens barrel facing towards an object side being closest to the object side and is annular. The reversing inclined surface expands from the lens barrel minimum opening to the image side, wherein a connecting position of the reversing inclined surface and the object-side outer inclined surface forms the lens barrel minimum opening.Type: ApplicationFiled: August 24, 2021Publication date: December 9, 2021Inventors: Chun-Hua TSAI, Ming-Ta CHOU
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Publication number: 20210349292Abstract: A plastic barrel includes an inner portion and an outer portion. The inner portion defines an interior space. The inner portion includes, in order from an object side to an image side, an object-side opening, a plurality of inner annular surfaces and an image-side opening. The interior space is configured for accommodating an imaging lens assembly, and the imaging lens assembly includes a plurality of plastic lens elements. The outer portion surrounds the inner portion. The outer portion includes a mounting structure. The mounting structure is disposed on a surface of the outer portion. The mounting structure is injection molded for mounting a planar conductive element and a wiring element. The mounting structure includes at least three gate traces, and the three gate traces are located on a surface of the mounting structure.Type: ApplicationFiled: July 23, 2021Publication date: November 11, 2021Inventors: Ming-Ta CHOU, Chun-Hua TSAI
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Patent number: 11169352Abstract: A plastic lens barrel includes an object-side portion, an image-side portion and a tube-shaped portion. The object-side portion is located close to an object side of the plastic lens barrel. The object-side portion includes an object-side opening and an object-side annular surface. The object-side annular surface surrounds the object-side opening and faces toward the object side. The image-side portion is located close to an image side of the plastic lens barrel and includes an image-side opening. The tube-shaped portion surrounds an optical axis. The tube-shaped portion is connected between the object-side portion and the image-side portion, and configured to define an inner space. The object-side annular surface includes a groove structure area. The groove structure area includes a plurality of groove structures. The groove structures are disposed in at least one of an arranging manner and an extending manner along a sagittal direction away from the optical axis.Type: GrantFiled: May 6, 2020Date of Patent: November 9, 2021Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Hua Tsai, Ming-Ta Chou, Lin-An Chang
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Patent number: 11150433Abstract: An imaging lens assembly includes a plastic barrel and a lens element set. The lens element set is disposed in the plastic barrel and has an optical axis. The lens element set includes an object-side lens element and an image-side lens element. The object-side lens element has an outer diameter surface and an optical effective portion, and includes a conical-aligning surface located on an image-side surface of the object-side lens element and for coaxially aligning and connecting the image-side lens element.Type: GrantFiled: May 1, 2019Date of Patent: October 19, 2021Assignee: LARGAN PRECISION CO., LTD.Inventors: Yeo-Chih Huang, Chun-Hua Tsai
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Patent number: 11131905Abstract: A camera module includes an imaging lens assembly and an image sensor, wherein the image sensor is located on an image side of the imaging lens assembly. The imaging lens assembly has an optical axis and includes a plastic lens barrel and a plurality of plastic lens elements, wherein the plastic lens elements are disposed in the plastic lens barrel. The plastic lens barrel includes an object-side outer surface, a lens barrel minimum opening, an object-side outer inclined surface and a reversing inclined surface. The object-side outer surface is a surface of the plastic lens barrel facing towards an object side being closest to the object side and is annular. The reversing inclined surface expands from the lens barrel minimum opening to the image side, wherein a connecting position of the reversing inclined surface and the object-side outer inclined surface forms the lens barrel minimum opening.Type: GrantFiled: February 20, 2020Date of Patent: September 28, 2021Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Hua Tsai, Ming-Ta Chou
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Patent number: 11106019Abstract: A plastic barrel includes an inner portion and an outer portion. The inner portion defines an interior space. The inner portion includes, in order from an object side to an image side, an object-side opening, a plurality of inner annular surfaces and an image-side opening. The interior space is configured for accommodating an imaging lens assembly, and the imaging lens assembly includes a plurality of plastic lens elements. The outer portion surrounds the inner portion. The outer portion includes a mounting structure. The mounting structure is disposed on a surface of the outer portion. The mounting structure is injection molded for mounting a planar conductive element and a wiring element. The mounting structure includes at least three gate traces, and the three gate traces are located on a surface of the mounting structure.Type: GrantFiled: May 30, 2019Date of Patent: August 31, 2021Assignee: LARGAN DIGITAL CO., LTD.Inventors: Ming-Ta Chou, Chun-Hua Tsai