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公开(公告)号：US20230091935A1
公开(公告)日：2023-03-23
申请号：US17481900
申请日：2021-09-22
Applicant: GM Global Technology Operations LLC
Inventor： Thomas A. Seder , Kai-Han Chang
Abstract: A head-up display system includes a hologram projector adapted to project a holographic image, a waveguide positioned in front of the hologram projector, wherein the holographic image projected by the hologram projector passes through the waveguide, a glare control prism positioned in front of the waveguide assembly, and a waveplate positioned between the waveguide and the glare control prism, the waveplate adapted to adjust the polarization of the holographic image.
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公开(公告)号：US20230090374A1
公开(公告)日：2023-03-23
申请号：US17481909
申请日：2021-09-22
Applicant: GM Global Technology Operations LLC
Inventor： Thomas A. Seder , Kai-Han Chang
Abstract: A head-up display system includes a hologram projector adapted to project a holographic image, a beam steering device adapted to adjust a look down angle of a holographic image projected through the beam steering device by the hologram projector, and a controller in communication with the hologram projector and adapted to compare the vertical location of the driver's eyes to a pre-determined nominal vertical position, and to adjust a virtual image distance of the holographic image projected by the hologram projector.
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公开(公告)号：US20230065537A1
公开(公告)日：2023-03-02
申请号：US17460634
申请日：2021-08-30
Applicant: GM Global Technology Operations LLC
Inventor： Thomas A. Seder , Kai-Han Chang
Abstract: A head-up display and a system and method of operating a head-up display. The head-up display includes a prism, an imager and a camera. The prism has a first surface and a second surface. An infrared-reflective coating on the second surface of the prism has a maximum reflectivity at a selected wavelength. The imager is configured to project a hologram into the prism via the first surface, out of the prism via the second surface, through the infrared-reflective coating and into an eyebox. The camera is configured to receive an eye tracking beam from the eyebox that is reflected from the infrared-reflective coating. A processor determines eye information from the eye tracking beam and adjusts a parameter of the hologram based on the eye information.
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公开(公告)号：US11589017B1
公开(公告)日：2023-02-21
申请号：US17539365
申请日：2021-12-01
Applicant: GM Global Technology Operations LLC
Inventor： Kai-Han Chang , Thomas A. Seder
Abstract: A ground line monitoring system includes a camera mounted in a first automobile vehicle. A waveguide directs a light into the camera having a first in-coupling grating receiving a first light imaging data and passing the first light imaging data as a first frequency of the light and a second in-coupling grating receiving a second light imaging data and passing the second light imaging data as a second frequency of the light. A color filter wheel receives the first frequency of the light and the second frequency of the light. An image sensor of the camera receives the first frequency of the light and the second frequency of the light at different times due to rotation of the color filter wheel. A controller performs a calculation using directions and angles of the first frequency of the light and the second frequency of the light to correct a camera image.
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公开(公告)号：US11385460B2
公开(公告)日：2022-07-12
申请号：US16363536
申请日：2019-03-25
Applicant: GM Global Technology Operations LLC
Inventor： Kai-Han Chang , Thomas A. Seder
Abstract: A head-up display system includes a housing having an interior surface and defining a cavity configured for receiving a ray of light. The head-up display system also includes a lens disposed within the cavity and configured for reflecting the ray of light towards the interior surface. Further, the head-up display system includes a first cured film formed from a coating composition, disposed on the interior surface, and configured for absorbing a ray of light within the cavity. The head-up display system also includes a second deposited film formed by an ionized gas treatment of the first cured film. The second deposited film is configured for transmitting the ray of light to the first cured film to thereby minimize scatter of the ray of light within the cavity. A device including the head-up display system is also described.
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Patent Agency Ranking
36.发明申请公开(公告)号：US20220066211A1
公开(公告)日：2022-03-03
申请号：US17004249
申请日：2020-08-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Thomas A. SEDER , Kai-Han Chang
Abstract: A direct-retina holographic projection system includes first and second spatial light modulators (SLMs) and a control module. The first SLM receives a beam of light and dithers the beam of light at a predetermined frequency to provide multiple instances of the beam of light. The second SLM receives the instances of the beam of light, displays an encoded phase hologram of a graphic image to be projected, and diffracts the instances of the beam of light to provide instances of the encoded phase hologram with the same graphic image but multiplied with dithered wavefronts. The control module: iteratively adjusts a parameter of the first SLM to generate the instances of the beam of light; and controls operation of the second SLM to, based on the instances of the beam of light, display multiple instances of the graphic image on a retina of an eye of a viewer.
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公开(公告)号：US20210239485A1
公开(公告)日：2021-08-05
申请号：US16782683
申请日：2020-02-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Farui Peng , Kai-Han Chang , Wei Tong
Abstract: A method of vehicle navigation using terrain text recognition includes receiving, via an electronic controller arranged on a vehicle and having access to a map of the terrain, a navigation route through the terrain. The method also includes receiving, via the controller, a signal from a global positioning system (GPS) to determine a current position of the vehicle relative to the terrain. The method additionally includes determining, via the controller, a location of a next waypoint on the navigation route and relative to the current vehicle position. The method also includes detecting and communicating to the controller, via a vehicle sensor an image frame displaying a text indicative of the next waypoint and correlating, via the controller, the detected text to the next waypoint on the map. Furthermore, the method includes setting, via the controller, an in-vehicle alert indicative of the detected text having been correlated to the next waypoint.
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公开(公告)号：US11024056B2
公开(公告)日：2021-06-01
申请号：US16560035
申请日：2019-09-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Kai-Han Chang , Thomas A. Seder
Abstract: In various embodiments, methods, systems, and vehicles are provided for locating an eye of an occupant of a vehicle. In an exemplary embodiment, a system is provided that includes: (i) a camera configured to generate a camera image of an occupant for a vehicle; and (ii) a processor coupled to the camera and configured to at least facilitate: (a) performing one or more Fourier transforms of the camera image; and (b) identifying a location for an eye of the occupant of the vehicle, using a phase model generated via the one or more Fourier transforms.
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公开(公告)号：US10996481B1
公开(公告)日：2021-05-04
申请号：US16688139
申请日：2019-11-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： James W. Wells , Jinglin Li , Kai-Han Chang , Thomas A. Seder
Abstract: A HUD apparatus for a vehicle includes a HUD patch defined upon a reflective surface of a windshield of the vehicle. A virtual image generator projects a virtual image within the HUD patch. An image sensor is coaligned with the virtual image generator and has a field of view including the HUD patch. A controller is configured to receive, from the image sensor, a HUD patch image, and to adjust the projected virtual image based upon the HUD patch image.
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公开(公告)号：US10860093B1
公开(公告)日：2020-12-08
申请号：US16553475
申请日：2019-08-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Kai-Han Chang , Thomas A. Seder
Abstract: In various embodiments, methods, systems, and vehicles are provided that include a head-up display and a locator system. In an exemplary embodiment, the head-up display system includes a housing; a light source disposed within the housing; and one or more mirrors disposed within the housing. Also in certain embodiments, the locator system includes: a galvanic mirror disposed outside, and in proximity to, the housing; a laser formed on the galvanic mirror; and a receiver formed on the galvanic mirror.
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