Patents by Inventor Hua Tang Liu
Hua Tang Liu 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: 10704903Abstract: A prism and light transmitter module includes a prism holder, a light transmitter, a prism module, a drive circuit board, a shield, and a fixing assembly. The light transmitter is configured to emit or receive a light beam along a light axis. The prism module includes an inclined plane and is disposed within the prism holder with the inclined plane exposed. The drive circuit board is disposed above the inclined plane, and intersects with the light axis at a first angle. The shield is disposed on the drive circuit board. The fixing assembly connects to the prism holder, is configured to fix the drive circuit board, and includes a hole through which the light transmitter is exposed. A binocular capable of measuring distance includes a first optical system and a second optical system. The first optical system or/and the second optical system include the prism and light transmitter module.Type: GrantFiled: August 25, 2017Date of Patent: July 7, 2020Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.Inventors: Yue-Ye Chen, Hua-Tang Liu, Zhi-Wei Gao, Sheng Luo, Jian-Mei Chen, Ming Zhou, Ke-Yu Qiu, Jia-Jun Cao, Lian Zhao, Jian Wei, Jian-Fei Feng
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Publication number: 20200182612Abstract: A range finder includes an image capturing module, a transceiver module, a switching module, an output device and a processing unit. The image capturing module is configured to receive a first light beam emitted by an object. The transceiver module is configured to emit a second light beam to the object and receive the second light beam reflected by the object for obtaining a distance between the range finder and the object. The switching module is configured to output an electrical signal corresponding to a selected operating mode selected from a plurality of operating modes. The output device is configured to show the selected operating mode corresponding to the electrical signal. The processing unit is connected to the image capturing module, the transceiver module and the output device for receiving the electrical signal and controlling the image capturing module, the transceiver module and the output device.Type: ApplicationFiled: November 15, 2019Publication date: June 11, 2020Inventors: Xin-Xin Lu, Hua-Tang Liu, Sheng Luo, Han Lu, Peng-Fei Song
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Patent number: 10520717Abstract: A prism module includes a first prism including a first surface, a second surface and a third surface, a roof prism including a roof surface and a fourth surface, a second prism including a fifth surface, a sixth surface and a seventh surface, and a third prism including a light access surface, a first reflecting surface and a second reflecting surface. A light source is disposed above the second prism and adjacent to the first and the roof prisms. A light beam emitted by the light source enters and is reflected by the third prism, enters the second prism through the seventh surface, passes through the sixth surface, enters the first prism through the third surface, and is reflected by the second surface to leave the prism module. The light beam leaving the prism module is parallel to a baseline passing through the first, the second and the fourth surfaces.Type: GrantFiled: January 4, 2017Date of Patent: December 31, 2019Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.Inventors: Yue-Ye Chen, Hua-Tang Liu, Zhi-Wei Gao, Sheng Luo, Jian-Mei Chen, Ming Zhou
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Patent number: 10520792Abstract: A range finder includes a laser transmitter, a laser receiver, a large-aperture objective lens unit, an image sensing device, a display device and a microphone. The laser transmitter is configured to emit a laser beam to a measured object. The laser receiver is configured to receive a reflected laser beam reflected by the measured object. The objective lens unit is configured to allow visible light reflected by the measured object to pass therethrough, includes an objective lens and a focusing lens and has a length defined by the objective lens and the focusing lens. The image sensing device is configured to receive the visible light passing through the objective lens and generate an image signal. The length is constant when the objective lens unit is moved with respect to the image sensing device for focusing operation.Type: GrantFiled: July 6, 2018Date of Patent: December 31, 2019Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL CO., INC.Inventors: Hua-Tang Liu, Hui-Qing Chen, Lian Zhao, Chin-Hsiang Wang, Fang-Li Ma
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Patent number: 10234283Abstract: A binoculars rangefinder includes a central shaft, two eyepieces, two objective lenses, two prism modules, an optical transmitter, and an optical receiver. The eyepieces are disposed on two sides of the central shaft, allowing a first light beam reflected by an object to pass therethrough. The objective lenses are disposed on the two sides of the central shaft. The prism modules are disposed between the eyepieces and objective lenses. The optical transmitter is configured to emit a second light beam to the object. The optical receiver is configured to receive the second beam which is reflected by the object.Type: GrantFiled: December 14, 2015Date of Patent: March 19, 2019Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.Inventors: Zhang-Ming Chang, Hua-Tang Liu, Yue-Ye Chen, Zhi-Wei Gao, Shang Luo
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Publication number: 20180314136Abstract: A range finder includes a laser transmitter, a laser receiver, a large-aperture objective lens unit, an image sensing device, a display device and a microphone. The laser transmitter is configured to emit a laser beam to a measured object. The laser receiver is configured to receive a reflected laser beam reflected by the measured object. The objective lens unit is configured to allow visible light reflected by the measured object to pass therethrough, includes an objective lens and a focusing lens and has a length defined by the objective lens and the focusing lens. The image sensing device is configured to receive the visible light passing through the objective lens and generate an image signal. The length is constant when the objective lens unit is moved with respect to the image sensing device for focusing operation.Type: ApplicationFiled: July 6, 2018Publication date: November 1, 2018Inventors: Hua-Tang Liu, Hui-Qing Chen, Lian Zhao, Chin-Hsiang Wang, Fang-Li Ma
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Publication number: 20180275393Abstract: An ocular structure for observation apparatus includes a first member, a second member and a main body. The first member includes at least one slot and a plurality of first limiting mechanisms. The second member includes at least one slider extending into the slot and a plurality of second limiting mechanisms. The main body includes an ocular lens unit, wherein the first member and the second member are mounted on the main body. The slider is moved in the slot when the first member and the second member are in relative rotation, and the first limiting mechanisms directly or indirectly match the second limiting mechanisms to position the first member with respect to the second member.Type: ApplicationFiled: January 2, 2018Publication date: September 27, 2018Inventors: Sheng Luo, Jia-Jun Cao, Hua-Tang Liu, Yue-Ye Chen, Yu-Rong Guan, Ke-Yu Qiu, Chiau-Jen Wang, Lian Zhao
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Publication number: 20180258981Abstract: A rotating shaft mechanism includes a first connecting portion, a second connecting portion, a central shaft rotatably connected to the first connecting portion and the second connecting portion, and an adjusting unit disposed on the central shaft. The adjusting unit includes an adjusting ring disposed around the central shaft, a first washer disposed around the central shaft and configured to generate a force to the first connecting portion or the second connecting portion. A position of the adjusting ring with respect to the central shaft is axially adjustable for adjusting the force so that the first connecting portion or the second connecting portion is rotatable or fixed relative to the central shaft.Type: ApplicationFiled: November 27, 2017Publication date: September 13, 2018Inventors: Sheng Luo, Lian Zhao, Hua-Tang Liu, Yue-Ye Chen, Ke-Yu Qiu, Jia-Jun Cao
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Publication number: 20170350697Abstract: A prism and light transmitter module includes a prism holder, a light transmitter, a prism module, a drive circuit board, a shield, and a fixing assembly. The light transmitter is configured to emit or receive a light beam along a light axis. The prism module includes an inclined plane and is disposed within the prism holder with the inclined plane exposed. The drive circuit board is disposed above the inclined plane, and intersects with the light axis at a first angle. The shield is disposed on the drive circuit board. The fixing assembly connects to the prism holder, is configured to fix the drive circuit board, and includes a hole through which the light transmitter is exposed. A binocular capable of measuring distance includes a first optical system and a second optical system. The first optical system or/and the second optical system include the prism and light transmitter module.Type: ApplicationFiled: August 25, 2017Publication date: December 7, 2017Inventors: Yue-Ye Chen, Hua-Tang Liu, Zhi-Wei Gao, Sheng Luo, Jian-Mei Chen, Ming Zhou, Ke-Yu Qiu, Jia-Jun Cao, Lian Zhao, Jian Wei, Jian-Fei Feng
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Publication number: 20170276927Abstract: A prism module includes a first prism including a first surface, a second surface and a third surface, a roof prism including a roof surface and a fourth surface, a second prism including a fifth surface, a sixth surface and a seventh surface, and a third prism including a light access surface, a first reflecting surface and a second reflecting surface. A light source is disposed above the second prism and adjacent to the first and the roof prisms. A light beam emitted by the light source enters and is reflected by the third prism, enters the second prism through the seventh surface, passes through the sixth surface, enters the first prism through the third surface, and is reflected by the second surface to leave the prism module. The light beam leaving the prism module is parallel to a baseline passing through the first, the second and the fourth surfaces.Type: ApplicationFiled: January 4, 2017Publication date: September 28, 2017Inventors: Yue-Ye Chen, Hua-Tang Liu, Zhi-Wei Gao, Sheng Luo, Jian-Mei Chen, Ming Zhou
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Patent number: 9746589Abstract: A prism assembly includes a first prism, a second prism, a roof prism and an optical multilayer film. The first prism includes a first, a second and a third surface. The second prism includes a fourth, a fifth and a sixth surface. The fifth surface faces the third surface. The roof prism includes a seventh, an eighth and a ridge surface. The seventh surface faces the second surface. The optical multilayer film is disposed between the fifth surface and the third surface. A first light beam and a second light beam entering the first prism are totally reflected from the second surface to the optical multilayer film which reflects the first light beam but allows the second light beam to pass through. The second light beam enters the second prism, is totally reflected on the sixth surface, and exits from the fourth surface of the second prism.Type: GrantFiled: August 14, 2014Date of Patent: August 29, 2017Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.Inventors: Hua-Tang Liu, Ching-Shiang Wang
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Publication number: 20170038203Abstract: A distance detector includes a main body, a laser emitting module, an image capturing module, an angle detecting mechanism, and a processing-control unit. The main body is configured to rotate about an axis. The laser emitting module is disposed on the main body and configured to emit a laser beam to a measured object, thereby forming a laser speckle thereon. The image capturing module is disposed on the main body and configured to capture an image of the measured object, which contains the laser speckle. The angle detecting mechanism is configured to detect an angular displacement of the main body from a starting position and generate angle data. The processing-control unit is configured to receive the image containing the laser speckle and the angle data to control rotation of the main body. A distance between the main body and the measured object is determined by using a triangulation method.Type: ApplicationFiled: July 5, 2016Publication date: February 9, 2017Inventors: Hua-Tang Liu, Chin-Hsiang Wang, Hsien-Chi Lin
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Publication number: 20160187131Abstract: A binoculars rangefinder includes a central shaft, two eyepieces, two objective lenses, two prism modules, an optical transmitter, and an optical receiver. The eyepieces are disposed on two sides of the central shaft, allowing a first light beam reflected by an object to pass therethrough. The objective lenses are disposed on the two sides of the central shaft. The prism modules are disposed between the eyepieces and objective lenses. The optical transmitter is configured to emit a second light beam to the object. The optical receiver is configured to receive the second beam which is reflected by the object.Type: ApplicationFiled: December 14, 2015Publication date: June 30, 2016Inventors: Zhang-Ming Chang, Hua-Tang Liu, Yue-Ye Chen, Zhi-Wei Gao, Shang Luo
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Publication number: 20160124090Abstract: A range finder includes a laser transmitter, a laser receiver, an objective lens, an image sensing device, a display device and a microphone. The laser transmitter is configured to emit a laser beam to a measured object. The laser receiver is configured to receive a reflected laser beam reflected by the measured object. The objective lens is configured to allow visible light reflected by the measured object to pass therethrough. The image sensing device is configured to receive the visible light passing through the objective lens and generate an image signal. The display device is configured to receive the image signal and display an image of the measured object. The microphone is configured to record sound.Type: ApplicationFiled: October 26, 2015Publication date: May 5, 2016Inventors: Hua-Tang Liu, Hui-Qing Chen, Lian Zhao, Chin-Hsiang Wang
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Patent number: 9201229Abstract: A photo-sensor type touch device includes a screen, two light modules, a sensor, and a calculating unit. The screen has a displaying region to show images thereon. The light module emits linear invisible light to the displaying region. The invisible light is substantially perpendicular to a normal of the displaying region. The sensor senses a change of the invisible light on the displaying region when an object approaches the displaying region, and sends a signal out. The calculating unit is electrically connected to the sensor to receive the signal and calculate the signal to obtain a location of the object on the displaying region.Type: GrantFiled: September 7, 2012Date of Patent: December 1, 2015Assignee: ASIA OPTICAL CO. INC.Inventors: Hua-Tang Liu, Ching-Shiang Wang
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Patent number: 9030651Abstract: A distance measurement method is provided that includes the steps of transmitting a laser signal to a target, receiving outside signals reflected by the target, converting the outside signals into an analog voltage signal, sampling the analogy voltage signal to obtain digital signals, storing the digital signals at storage addresses in a one-to-one relationship, repeating the above steps, accumulating numeral values at each storage addresses to obtain an accumulated value, outputting the accumulating value which exceeds a constant and corresponds to a time point, and calculating the distance between a laser range finding device and the target according to the time point corresponding to the output accumulated value.Type: GrantFiled: May 21, 2013Date of Patent: May 12, 2015Assignees: Sintai Optical (Shenzhen) Co., Ltd., Asia Optical International Ltd.Inventor: Hua-Tang Liu
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Patent number: 8970824Abstract: A rangefinder for measuring a distance of an object includes a case, in which a refractor, a measuring light source, a light receiver, a receiving lens, a reference light source, and a reflector are provided. The measuring light source emits measuring light to the refractor, and the refractor refracts the measuring light to the object. The measuring light reflected by the object emits to the light receiver through the receiving lens. The reference light emits reference light to the reflector, and the reflector reflects the reference light to the light receiver. The refractor and the reflector may be turned for calibration.Type: GrantFiled: March 13, 2012Date of Patent: March 3, 2015Assignee: Asia Optical Co., Inc.Inventors: Zhang-Ming Chang, Hua-Tang Liu
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Publication number: 20150055116Abstract: A prism assembly includes a first prism, a second prism, a roof prism and an optical multilayer film. The first prism includes a first, a second and a third surface. The second prism includes a fourth, a fifth and a sixth surface. The fifth surface faces the third surface. The roof prism includes a seventh, an eighth and a ridge surface. The seventh surface faces the second surface. The optical multilayer film is disposed between the fifth surface and the third surface. A first light beam and a second light beam entering the first prism are totally reflected from the second surface to the optical multilayer film which reflects the first light beam but allows the second light beam to pass through. The second light beam enters the second prism, is totally reflected on the sixth surface, and exits from the fourth surface of the second prism.Type: ApplicationFiled: August 14, 2014Publication date: February 26, 2015Inventors: Hua-Tang Liu, Ching-Shiang Wang
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Publication number: 20150049327Abstract: An optical system includes a transmitter emitting a signal to a measured object; a receiver receiving the signal reflected back from the measured object; and a transmissive display device displaying a distance of the measured object measured by the range finder, wherein an image of the measured object is visible directly through the transmissive display device.Type: ApplicationFiled: August 13, 2014Publication date: February 19, 2015Inventors: Hua-Tang Liu, Ching-Shiang Wang, Wan-Yun Wu
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Publication number: 20140320844Abstract: A range finder includes a laser transmitter, an IR transmitter, a laser receiver, an objective lens, an image sensing device, a prism device, and a display device. At least one laser beam is emitted from a laser transmitter and reflected to a laser receiver by a measured object. An infrared ray is emitted from the IR transmitter and reflected to the image sensing device by the measured object. The prism device is disposed between the objective lens and the image sensing device, for guiding visible light and the infrared ray to the image sensing device and guiding the laser beam to the laser receiver. The display device displays the image of the measured object that is captured by the image sensing device.Type: ApplicationFiled: January 6, 2014Publication date: October 30, 2014Applicants: Asia Optical International Ltd., Sintai Optical (Shenzhen) Co., Ltd.Inventors: Hua-Tang Liu, Chin-Hsiang Wang