Patents by Inventor Evan Y. W. Zhang

Evan Y. W. Zhang 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: 10795145
    Abstract: Infrared and night vision optical fusion systems are provided. The first scheme is to add a common-aperture beam splitter in front of the night vision device, which is a band-pass filter having a high transmission for the light with wavelength of 0.78-1 ?m, and a high reflectivity for the visible light with wavelength of 0.38-0.78 ?m and for the infrared light with wavelength of 8-14 ?m. After electrical processing, a target image with a temperature higher or lower than a certain threshold is obtained on the LCD/OLED. The second scheme is to align the night vision objective lens and the infrared objective lens having the same field of view side by side. Since only infrared targets having a temperature above or below a certain threshold are used, white or red humans, animals and vehicles can be clearly seen in a green night vision background with high contrast no matter which scheme is adopted.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: October 6, 2020
    Assignee: ULSee Inc.
    Inventor: Evan Y. W. Zhang
  • Patent number: 10794764
    Abstract: A double-channel miniaturized Raman spectrometer includes a sequentially-connected near-infrared laser diode or near-ultraviolet laser emitter, a collimated laser beam expander, a first beam splitter that retards laser light but penetrates laser light and Raman light, a cylindrical or spherical objective lens with or without zooming, a second beam splitter that retards laser light but penetrates Raman light, a relay optical system, a slit, two spectral lens, a plurality of line-array or matrix-array CCD or CMOS detectors, a GPS, and a data processing and wireless transceiver system. After the laser channel photographing a target and aligning an optical axis and a Raman channel to measure the sample, the data is wirelessly sent to a cell phone and a cloud computer for spectrum separation, peak search, spectral library establishment, material identification and the like in order to obtain a quick conclusion.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: October 6, 2020
    Assignee: ULSee Inc.
    Inventor: Evan Y. W. Zhang
  • Publication number: 20190121115
    Abstract: Infrared and night vision optical fusion systems are provided. The first scheme is to add a common-aperture beam splitter in front of the night vision device, which is a band-pass filter having a high transmission for the light with wavelength of 0.78-1 ?m, and a high reflectivity for the visible light with wavelength of 0.38-0.78 ?m and for the infrared light with wavelength of 8-14 ?m. After electrical processing, a target image with a temperature higher or lower than a certain threshold is obtained on the LCD/OLED. The second scheme is to align the night vision objective lens and the infrared objective lens having the same field of view side by side. Since only infrared targets having a temperature above or below a certain threshold are used, white or red humans, animals and vehicles can be clearly seen in a green night vision background with high contrast no matter which scheme is adopted.
    Type: Application
    Filed: October 25, 2017
    Publication date: April 25, 2019
    Inventor: Evan Y. W. Zhang
  • Publication number: 20190086260
    Abstract: A double-channel miniaturized Raman spectrometer includes a sequentially-connected near-infrared laser diode or near-ultraviolet laser emitter, a collimated laser beam expander, a first beam splitter that retards laser light but penetrates laser light and Raman light, a cylindrical or spherical objective lens with or without zooming, a second beam splitter that retards laser light but penetrates Raman light, a relay optical system, a slit, two spectral lens, a plurality of line-array or matrix-array CCD or CMOS detectors, a GPS, and a data processing and wireless transceiver system. After the laser channel photographing a target and aligning an optical axis and a Raman channel to measure the sample, the data is wirelessly sent to a cell phone and a cloud computer for spectrum separation, peak search, spectral library establishment, material identification and the like in order to obtain a quick conclusion.
    Type: Application
    Filed: May 30, 2018
    Publication date: March 21, 2019
    Inventor: Evan Y. W. Zhang
  • Publication number: 20190011702
    Abstract: A helmet-mounted visualization device without parallax and its operation method are provided in the present disclosure. The helmet-mounted visualization device includes a fixing member, a first unit, a photoelectric part, a second unit, and a connecting member. The first unit at least includes an objective lens and a display element. The photoelectric part is used for converting an external optical signal passing through the objective lens into an electrical signal and transmitting the electrical signal to a processing circuit. The second unit includes the processing circuit and a power supply and may include the photoelectric part. The connecting member is made of a bendable metal material or a mechanical device and is shaped into a fixed shape when the central axis of the objective lens is collinear with the central axis of the display element and the user's eye sight. The user can use one eye or two eyes.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 10, 2019
    Inventor: Evan Y. W. Zhang
  • Patent number: 8696459
    Abstract: Systems and methods are provided for the measurement and input of position information and/or information regarding the position and/or movement and/or speed of a target of interest, e.g., without requiring a hand-held controller. According to further aspects of the present invention, systems and methods are provided for removing background images, such as furniture and other items, shadows, etc., in the environment of an associated camera or cameras. The elimination of background images behind the subject reduces processing requirements to track the movements of a participant, and may avoid the potential of the image processing logic to confuse the background with the image of the subject. Parabolic LEDs are also provided, which provide safe illumination and gating. As an alternative to gating, a grating or grid light source may be utilized. Still further, a participant's image may be integrated into video applications including games.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: April 15, 2014
    Inventor: Evan Y. W. Zhang
  • Patent number: 8282485
    Abstract: A device is provided for capturing images of targets of interest for interaction with or in response to electronic events, such as may be generated by video games and/or other interactive applications. The device includes a shadowless light source, such as one or more light emitting devices that are capable of emitting light into an environment where the emitted light is in at least a first predetermined frequency range that defines a spectral range outside the range of the fluctuating ambient light. A camera has a light receiving lens and an image sensor for converting the light received through the light receiving lens into image data that is obtained by a processor to form a digital representation of the target of interest. Also, the device may include a filter to substantially block light in an anticipated spectral range of fluctuating ambient light.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: October 9, 2012
    Inventor: Evan Y. W. Zhang
  • Publication number: 20120225718
    Abstract: Systems and methods are provided for the measurement and input of position information and/or information regarding the position and/or movement and/or speed of a target of interest, e.g., without requiring a hand-held controller. According to further aspects of the present invention, systems and methods are provided for removing background images, such as furniture and other items, shadows, etc., in the environment of an associated camera or cameras. The elimination of background images behind the subject reduces processing requirements to track the movements of a participant, and may avoid the potential of the image processing logic to confuse the background with the image of the subject. Parabolic LEDs are also provided, which provide safe illumination and gating. As an alternative to gating, a grating or grid light source may be utilized. Still further, a participant's image may be integrated into video applications including games.
    Type: Application
    Filed: May 14, 2012
    Publication date: September 6, 2012
    Inventor: Evan Y. W. Zhang
  • Patent number: 8187097
    Abstract: Systems and methods are provided for the measurement and input of position information and/or information regarding the position and/or movement and/or speed of a target of interest, e.g., without requiring a hand-held controller. According to further aspects of the present invention, systems and methods are provided for removing background images, such as furniture and other items, shadows, etc., in the environment of an associated camera or cameras. The elimination of background images behind the subject reduces processing requirements to track the movements of a participant, and may avoid the potential of the image processing logic to confuse the background with the image of the subject. Parabolic LEDs are also provided, which provide safe illumination and gating. As an alternative to gating, a grating or grid light source may be utilized. Still further, a participant's image may be integrated into video applications including games.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: May 29, 2012
    Inventor: Evan Y. W. Zhang
  • Patent number: 7345277
    Abstract: An infrared imaging device combines two sensors, each sensor sensitive to a different spectral range of infrared radiation. Both sensors are combined in a single camera sharing one of three common optical apertures, thus parallax is eliminated between the sensors. Further, a display device is aligned along an optical axis in common with the camera eliminating parallax between the display and camera. Images from the first sensor, the second sensor, or both sensors may be viewed optically and/or electronically. The device is handheld, or mountable on a headgear such as a helmet. When mounted on headgear, the display is viewable by directing the operator's gaze upward, thus the display does not interfere with an operator's straight and downward sight. The image can be sent to a remote display by a wireless transceiver, and waterproof, fireproof, vibration/impact resistance, and hot/cold weather resistance are achieved using a high strength plastic enclosure with foam insert.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: March 18, 2008
    Inventor: Evan Y. W. Zhang
  • Patent number: 6476391
    Abstract: The system according to the invention uses cutting edge technologies such as Uncooled Staring Focal Plane detector Array, Hot Pressed Polycrystal Objective Lens, Helmet Mounted Display Using Transparent Image Combiner, and Neural Network Image Colorization and Recognition to dramatically enhance the system performance and reduce the weight and cost. The helmet mounted infrared imaging system can: Detect and recognize flames, humans and other objects, Reduce the weight of the helmet components (including camera head and combiner) to less than 0.5 pounds, View simultaneously visible and invisible surroundings without hindering operations. Operate the imaging system hands-off; and Transmit the imaging data to and receive the map from a remote sight. Alternative Embodiment In an alternative embodiment, the infrared camera is mounted centered in front of the display.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: November 5, 2002
    Inventor: Evan Y. W. Zhang
  • Patent number: 6456261
    Abstract: A passive/active infrared imaging system apparatus for mounting on a head/helmet includes a passive infrared camera Head Pack having a removable narrow band filter cover, an objective lens, a beam splitter, an uncooled focal plane array (UFPA) package, an interface board, and a display unit such a liquid crystal display (LCD), with forward/back, up/down, and tilt adjustment functions fitting any mask, mounted in the front of said head/helmet for converting infrared light images into electronic signals. An electronic unit coupled between the UFPA of the infrared camera and the display unit, includes a controller for processing video signals from the infrared camera and supplying them to the display unit. The electronic circuit includes a wireless video & audio transceiver, a piezoelectric microphone, a voice controller, and a neural network pattern recognition chip.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: September 24, 2002
    Inventor: Evan Y. W. Zhang
  • Publication number: 20020030163
    Abstract: An infrared imaging device combines two sensors, each sensor sensitive to a different spectral range of infrared radiation. Both sensors are combined in a single camera sharing one of three common optical apertures, thus parallax is eliminated between the sensors. Further, a display device is aligned along an optical axis in common with the camera eliminating parallax between the display and camera. Images from the first sensor, the second sensor, or both sensors may be viewed optically and/or electronically. The device is handheld, or mountable on a headgear such as a helmet. When mounted on headgear, the display is viewable by directing the operator's gaze upward, thus the display does not interfere with an operator's straight and downward sight. The image can be sent to a remote display by a wireless transceiver, and waterproof, fireproof, vibration/impact resistance, and hot/cold weather resistance are achieved using a high strength plastic enclosure with foam insert.
    Type: Application
    Filed: August 8, 2001
    Publication date: March 14, 2002
    Inventor: Evan Y.W. Zhang
  • Publication number: 20020021573
    Abstract: This invention uses LEDs to replace the incandescent bulbs for 5 lighting devices because the LED has much lower power consumption, much longer lifetime, and many other advantages than incandescent bulb.
    Type: Application
    Filed: October 9, 2001
    Publication date: February 21, 2002
    Inventor: Evan Y. W. Zhang