Patents by Inventor Yung-Peng Chang

Yung-Peng 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).

  • Patent number: 11281084
    Abstract: An illumination system includes: a laser array assembly including: a laser configured to generate a laser light; a crystal phosphor waveguide, adjacent to the laser and in the laser light, configured to: generate of a luminescent light based on receiving the laser light, and direct the luminescent light away from a base end; and a compound parabolic concentrator (CPC), coupled to the crystal phosphor waveguide opposite the base end, configured to: collect the luminescent light from the crystal phosphor waveguide, project the luminescent light away from the crystal phosphor waveguide.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: March 22, 2022
    Assignee: Optonomous Technologies, Inc.
    Inventors: Yung Peng Chang, Alan Wang, Kirk Huang, Mark Chang, Lion Wang, Andy Chen, Kenneth Li
  • Publication number: 20220082225
    Abstract: A laser-excited phosphor light source and method includes a heat sink; a plurality of lasers, each mounted in thermal contact to the heat sink, wherein each of the plurality of lasers emits one or more first (e.g., blue) wavelengths. A crystal phosphor rod having two ends and at least one side face is operatively coupled to receive the laser light from one or more of the plurality of lasers. The rod emits light of one or more longer wavelengths. A compound parabolic concentrator (CPC) receives the light from the crystal phosphor rod. The light source outputs an output light beam that includes the light of one or more longer wavelengths from the first crystal phosphor rod and light of the one or more first (e.g., blue) wavelengths. Some embodiments include multiple phosphor light sources of different colors, and/or a blue light source not using phosphors.
    Type: Application
    Filed: October 4, 2019
    Publication date: March 17, 2022
    Inventors: Yung Peng Chang, Alan Wang, Kirk Huang, Mark Chang, Lion Wang, Andy Chen, Kenneth Li
  • Publication number: 20210254799
    Abstract: An illumination system includes a waveguide having a first end configured to receive a laser light, a luminescent portion configured to generate a luminescent light from the laser light, a second end opposite the first end; an input device configured to collect the laser light for propagation to the first end; an output device adjacent to the second end configured to reflect at least some of the laser light back into the luminescent portion and direct the luminescent light away from the second end through an output surface. In one embodiment, the input device includes a light homogenizer configured to receive the laser light and provide to the first end of the waveguide a spatially uniform intensity distribution of the laser light. In another embodiment, a heat dissipater is provided adjacent to the waveguide and configured to dissipate heat generated within the waveguide by the generation of the luminescent light.
    Type: Application
    Filed: June 14, 2019
    Publication date: August 19, 2021
    Inventors: Yung Peng Chang, Alan Wang, Kirk Huang, Mark Chang, Lion Wang, Andy Chen, Kenneth Li
  • Patent number: 10845033
    Abstract: A white light illumination system is provided, including a light source unit, a beam splitter unit, a phosphor unit, a heat dissipation unit, and a diffuse reflective unit. The light source generating unit can generate an approximately collimated light beam along a predetermined transmission path. The beam splitter unit, the phosphor unit, and the diffuse reflective unit are disposed adjacent to one side of the light source unit. The beam splitter unit is located on the predetermined transmission path. The approximately collimated light beam is projected onto the beam splitter unit. The heat dissipation unit is disposed on the phosphor unit.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: November 24, 2020
    Assignee: TAIWAN COLOR OPTICS, INC.
    Inventors: Chih-Feng Wang, Yung-Peng Chang, Hsin-An Chen, Shih-Hsin Chang
  • Publication number: 20200271303
    Abstract: A white light illumination system is provided, including a light source unit, a beam splitter unit, a phosphor unit, a heat dissipation unit, and a diffuse reflective unit. The light source generating unit can generate an approximately collimated light beam along a predetermined transmission path. The beam splitter unit, the phosphor unit, and the diffuse reflective unit are disposed adjacent to one side of the light source unit. The beam splitter unit is located on the predetermined transmission path. The approximately collimated light beam is projected onto the beam splitter unit. The heat dissipation unit is disposed on the phosphor unit.
    Type: Application
    Filed: February 21, 2020
    Publication date: August 27, 2020
    Inventors: CHIH-FENG WANG, YUNG-PENG CHANG, HSIN-AN CHEN, SHIH-HSIN CHANG
  • Patent number: 10754236
    Abstract: An illumination system includes an input device configured to generate a first luminescent light beam; a pumping assembly, optically coupled to the input device, configured to project a pumping light beam into the input device; a focusing lens, aligned with the first luminescent light beam, to focus the first luminescent light beam enhanced by the pumping light beam as an output beam; and an output device, optically coupled to the focusing lens, configured to: receive the output beam from the focusing lens, and project an application output, formed with the output beam, from a projection device.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: August 25, 2020
    Assignee: Optonomous Technologies, Inc.
    Inventors: Yung Peng Chang, Alan Wang, Kirk Huang, Mark Chang, Lion Wang, Andy Chen, Kenneth Li
  • Publication number: 20200026169
    Abstract: An illumination system includes: a laser array assembly including: a laser configured to generate a laser light; a crystal phosphor waveguide, adjacent to the laser and in the laser light, configured to: generate of a luminescent light based on receiving the laser light, and direct the luminescent light away from a base end; and a compound parabolic concentrator (CPC), coupled to the crystal phosphor waveguide opposite the base end, configured to: collect the luminescent light from the crystal phosphor waveguide, project the luminescent light away from the crystal phosphor waveguide.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 23, 2020
    Inventors: Yung Peng Chang, Alan Wang, Kirk Huang, Mark Chang, Lion Wang, Andy Chen, Kenneth Li
  • Publication number: 20200026170
    Abstract: An illumination system includes an input device configured to generate a first luminescent light beam; a pumping assembly, optically coupled to the input device, configured to project a pumping light beam into the input device; a focusing lens, aligned with the first luminescent light beam, to focus the first luminescent light beam enhanced by the pumping light beam as an output beam; and an output device, optically coupled to the focusing lens, configured to: receive the output beam from the focusing lens, and project an application output, formed with the output beam, from a projection device.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 23, 2020
    Inventors: Yung Peng Chang, Alan Wang, Kirk Huang, Mark Chang, Lion Wang, Andy Chen, Kenneth Li
  • Patent number: 10310252
    Abstract: The instant disclosure provides an optical wheel including a rotary light-transmittable substrate, an optical microstructure layer and an optical coating layer. The rotary light-transmittable substrate has a first surface and a second surface opposite to the first surface, and rotates around a central axis. The optical microstructure is disposed on the first surface or the second surface. The optical coating layer is disposed on the optical microstructure. At least a laser incident light beam is projected onto the first surface or the second surface of the rotary light-transmittable substrate for forming a laser emission light beam emitted from the second surface.
    Type: Grant
    Filed: November 11, 2017
    Date of Patent: June 4, 2019
    Assignee: TAIWAN COLOR OPTICS, INC.
    Inventors: Chih-Feng Wang, Yung-Peng Chang
  • Publication number: 20190146207
    Abstract: The instant disclosure provides an optical wheel including a rotary light-transmittable substrate, an optical microstructure layer and an optical coating layer. The rotary light-transmittable substrate has a first surface and a second surface opposite to the first surface, and rotates around a central axis. The optical microstructure is disposed on the first surface or the second surface. The optical coating layer is disposed on the optical microstructure. At least a laser incident light beam is projected onto the first surface or the second surface of the rotary light-transmittable substrate for forming a laser emission light beam emitted from the second surface.
    Type: Application
    Filed: November 11, 2017
    Publication date: May 16, 2019
    Inventors: CHIH-FENG WANG, YUNG-PENG CHANG
  • Patent number: 9850158
    Abstract: A method for producing sheets of glass phosphor, including following steps of: taking glass powder, phosphor powder and a bonding agent to mix to form a mixture, wherein the glass powder and the phosphor powder are mixed first, and then the glass powder and the phosphor powder are mixed with the bonding agent; compressing the mixture to form a tablet; sintering the tablet to form a glass phosphor body; cutting the glass phosphor body to form at least one sheet body.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: December 26, 2017
    Assignee: TAIWAN COLOR OPTICS, INC.
    Inventors: Chih-Feng Wang, Yung-Peng Chang, Kuo-Yin Huang, Hsin-An Chen, Wei-Chih Cheng
  • Publication number: 20160347640
    Abstract: A method for producing sheets of glass phosphor, including following steps of: taking glass powder, phosphor powder and a bonding agent to mix to form a mixture, wherein the glass powder and the phosphor powder are mixed first, and then the glass powder and the phosphor powder are mixed with the bonding agent; compressing the mixture to form a tablet; sintering the tablet to form a glass phosphor body; cutting the glass phosphor body to form at least one sheet body.
    Type: Application
    Filed: May 25, 2016
    Publication date: December 1, 2016
    Inventors: CHIH-FENG WANG, YUNG-PENG CHANG, KUO-YIN HUANG, HSIN-AN CHEN, WEI-CHIH CHENG
  • Publication number: 20160139401
    Abstract: A glass phosphor color wheel includes a wheel body made of a glass phosphor formed by sintering a glass material and fluorescent powder. The fluorescent powder is a fluorescent material selected from the group consisting of yttrium aluminum garnet, nitride, silicate, aluminate, and oxynitride. The glass material is selected from the group consisting of a silicate system, a phosphor system, a borate system, and a tellurate system. A method for producing a glass phosphor color wheel includes concentrically placing an inner tube into an outer tube. The glass material and the fluorescent powder are placed between the outer and inner tubes and are formed into a wheel body. In another method, the glass material and the fluorescent powder are sintered at a temperature of 500-1000° C. to form at least one glass phosphor color block that is subsequently coupled to a substrate to form a glass phosphor color wheel.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 19, 2016
    Inventors: Wood-Hi Cheng, Yung-Peng Chang, Chun-Chin Tsai, Yi-Chung Huang, Wei-Chih Cheng
  • Publication number: 20160139300
    Abstract: A method for producing a low temperature glass phosphor lens includes dry mixing a glass material and fluorescent powder to form a powdery or particulate mixture. The mixture is grinded to a diameter of 15-20 ?m, obtaining uniformly mixed glass fluorescent powder. The glass fluorescent powder is hot pressed into a glass phosphor at a temperature of 500-1000° C. The glass phosphor is grinded and polished into a lens. The fluorescent powder can be a fluorescent material selected from the group consisting of yttrium aluminum garnet, nitride, and silicate. The glass material can be selected from the group consisting of a silicate system, a phosphor system, a borate system, and a tellurate system. The glass phosphor includes characteristics of both of glass and fluorescence. The glass phosphor can keep efficiency under the high heat generated by the chip of an LED.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 19, 2016
    Inventors: Wood-Hi Cheng, Yung-Peng Chang, Li-Yin Chen, Chun-Chin Tsai, Yi-Chung Huang, Wei-Chih Cheng, Jin-Kai Chang
  • Publication number: 20150370155
    Abstract: A projector using glass phosphor as a color mixing element includes: a laser light source capable of producing light; an optical system, the color mixing member, a reflection element and an imaging system disposed on a light transmission path. The optical system includes a color wheel, the light will be converted into light beams of different colors when passing through the color wheel. The color mixing element is located between the laser light source and the optical system and made of glass phosphor, and a glass transition temperature of the glass phosphor being higher than 500° C. The imaging system serves to convert the light beams into an image. The use of the heat-resistant glass phosphor as the color mixing element enables the projector to have a wide color gamut and an adjustable color gamut.
    Type: Application
    Filed: June 23, 2014
    Publication date: December 24, 2015
    Inventors: Wood-Hi CHENG, Yung-Peng Chang, Chun-Chin Tsai, Ming-Chang Shih, Wen-How Lan, Yi-Chung Huang, Wei-Chih Cheng
  • Publication number: 20100165634
    Abstract: Disclosed is an ultra-thin light guidance device, which is realized through integrating a micro prism set into a light guidance module, and achieving filtering the incident lights by means of a micro grating in said micro prism set, thus only part of the effective incident lights pass through said micro prism set, while the rest of incident lights are reflected back to a bottom light guidance layer and a bottom light reflection plate, so that lights are reflected back and enters into said micro prism set again. As such, in less than 10 mm thickness of the ultra-thin light guidance device, a dot or a line light source is converted to form an evenly distributed and highly efficient surface light source by making use of said micro prism set.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 1, 2010
    Inventors: Hei-Tai Hong, Huai-Fang Tsai, Yung-Peng Chang