公开(公告)号：US11006090B2

公开(公告)日：2021-05-11

申请号：US16318680

申请日：2017-08-04

Applicant: University of Rochester

Inventor： John C. Howell ,  Joseph Spencer Howell

IPC: H04N13/117 ,  G06F3/03 ,  G06F3/01 ,  H04N7/18 ,  H04N13/376 ,  H04N13/204 ,  H04N13/305 ,  H04N13/366

Abstract: The present disclosure is generally related to capturing a scene and projecting a virtual window to one or more observers. A virtual window may mimic the experience a viewer has when looking through a real window. In some embodiments, for a single observer looking at a digital display or digital screen, a head-tracking camera on the same side of the screen as the observer can determine the position of the observer relative to the screen. The camera may be a 3D camera, stereoscopic camera, a wide angle lens camera, or an array of cameras (e.g., two or more). A camera on the other side of the screen can then image the view on the other side of the screen and software can determine the correct portion of the view that should be displayed on the screen to the observer.

公开(公告)号：US20190230332A1

公开(公告)日：2019-07-25

申请号：US16318680

申请日：2017-08-04

Applicant: University of Rochester

Inventor： John C. Howell ,  Joseph Spencer Howell

IPC: H04N13/117 ,  H04N13/366 ,  H04N13/305 ,  H04N13/204

Abstract: The present disclosure is generally related to capturing a scene and projecting a virtual window to one or more observers. A virtual window may mimic the experience a viewer has when looking through a real window. In some embodiments, for a single observer looking at a digital display or digital screen, a head-tracking camera on the same side of the screen as the observer can determine the position of the observer relative to the screen. The camera may be a 3D camera, stereoscopic camera, a wide angle lens camera, or an array of cameras (e.g., two or more). A camera on the other side of the screen can then image the view on the other side observer is relative to the window of the screen and software can determine the correct portion of the view that should be displayed on the screen to the observer.

公开(公告)号：US10739111B2

公开(公告)日：2020-08-11

申请号：US15567805

申请日：2016-04-21

Applicant: UNIVERSITY OF ROCHESTER

Inventor： Joseph S. Choi ,  John C. Howell

IPC: F41H3/00 ,  G02B27/00 ,  H04N5/74 ,  H04N13/307 ,  H04N13/232 ,  H04N9/31 ,  G02B30/27 ,  H04N13/229 ,  H04N13/305 ,  G01C3/14 ,  G01S17/42

Abstract: Digital cloaking is a method for practical cloaking, where space, angle, spectrum and phase are discretized. At the sacrifice of spatial resolution, a good approximation to an ideal cloak can be achieved—a cloak that is omnidirectional, broadband, and operational for the visible spectrum, three-dimensional (3D), and phase-matching for the light field, among other attributes. One example of a digital cloak is an active cloak that uses lenticular lenses, similar to integral imaging for 3D displays. With the continuing improvement in commercial digital technology, the resolution limitations of a digital cloak may be minimized, and a wearable cloak can be implemented.

公开(公告)号：US10591632B2

公开(公告)日：2020-03-17

申请号：US15759673

申请日：2016-09-16

Applicant: UNIVERSITY OF ROCHESTER

Inventor： John C. Howell ,  Christopher Mullarkey ,  Julian Martinez-Rincon

IPC: G01C1/00 ,  G01V7/12 ,  G01V7/04

Abstract: Embodiments of the present invention may be generally related to methods, devices, and systems which measure a gravitational field. The methods and devices may utilize an interferometer to measure tilt of a pendulum, where the tilt of the pendulum is due to a gravitational force associated with a target object. In some embodiments, the interferometer may be a displaced, even parity, Sagnac interferometer. Additionally, the interferometer may be operated in the inverse weak value domain. In some embodiments, the pendulum and interferometric readout may measure relative gravitational fields that are transverse to Earth's gravitational field. In at least some embodiments, methods and devices may have shot noise limited sensitivity sufficient to detect one kilogram 25 meters away and may have a 1 nGal resolution after mere seconds of integration. Embodiments disclosed may be used to gravitationally map density fluctuations in a target object, including the human body.

公开(公告)号：US20190196053A1

公开(公告)日：2019-06-27

申请号：US16231368

申请日：2018-12-21

Applicant: University of Rochester

Inventor： Andrew N. Jordan ,  John C. Howell

IPC: G01V7/12 ,  G01V7/06 ,  G01V7/04

CPC classification number: G01V7/12 ,  G01V7/04 ,  G01V7/06

Abstract: Methods of scanning an object using a pendulum gravimeter are disclosed. The pendulum gravimeter may include an interferometer, such as a Sagnac interferometer, to determine a displacement on the pendulum by way of a mirror attached to the pendulum. Scanning of the object may be performed in 1D, 2D, or 3D, and may result in an image of the object. In another aspect, a mass may be tracked while in motion using a pendulum gravimeter to detect the gravitational attraction of the object.

公开(公告)号：US20180267326A1

公开(公告)日：2018-09-20

申请号：US15761820

申请日：2016-09-21

Applicant: UNIVERSITY OF ROCHESTER

Inventor： Curtis J. Broadbent ,  John C. Howell

IPC: G02B27/22 ,  H04N13/39 ,  G09G3/02

CPC classification number: G02B27/2271 ,  G02B2207/114 ,  G09G3/025 ,  H04N13/39

Abstract: A system for displaying one or more images in three dimensions. The system has a three dimensional illumination volume containing a gas that emits one or more types of visible light when at certain multi-photon excited states. The system includes lasers (e.g. lasers with beams outside of the visible wavelengths) that can be directed to intersect in the illumination volume to excite particles of the gas to a multi-photon excited state to emit visible light. Scanning the beam intersection (or multiple beam intersections) through the illumination volume generates three dimensional images. In some embodiments, the system includes lasers that can be directed to intersect in the illumination volume to excite particles to an intermediate state that absorbs at least a portion of the emitted radiation from particles excited to a multi-photon excited state.

公开(公告)号：US10983244B2

公开(公告)日：2021-04-20

申请号：US16231368

申请日：2018-12-21

Applicant: University of Rochester

Inventor： Andrew N. Jordan ,  John C. Howell

IPC: G01V7/12 ,  G01V7/04 ,  G01V7/06

Abstract: Methods of scanning an object using a pendulum gravimeter are disclosed. The pendulum gravimeter may include an interferometer, such as a Sagnac interferometer, to determine a displacement on the pendulum by way of a mirror attached to the pendulum. Scanning of the object may be performed in 1D, 2D, or 3D, and may result in an image of the object. In another aspect, a mass may be tracked while in motion using a pendulum gravimeter to detect the gravitational attraction of the object.

公开(公告)号：US20190041544A1

公开(公告)日：2019-02-07

申请号：US15759673

申请日：2016-09-16

Applicant: UNIVERSITY OF ROCHESTER

Inventor： John C. Howell ,  Christopher Mullarkey ,  Julian Martinez-Rincon

IPC: G01V7/12 ,  G01V7/04

CPC classification number: G01V7/12 ,  G01C1/00 ,  G01V7/04

Abstract: Embodiments of the present invention may be generally related to methods, devices, and systems which measure a gravitational field. The methods and devices may utilize an interferometer to measure tilt of a pendulum, where the tilt of the pendulum is due to a gravitational force associated with a target object. In some embodiments, the interferometer may be a displaced, even parity, Sagnac interferometer. Additionally, the interferometer may be operated in the inverse weak value domain. In some embodiments, the pendulum and interferometric readout may measure relative gravitational fields that are transverse to Earth's gravitational field. In at least some embodiments, methods and devices may have shot noise limited sensitivity sufficient to detect one kilogram 25 meters away and may have a 1 nGal resolution after mere seconds of integration. Embodiments disclosed may be used to gravitationally map density fluctuations in a target object, including the human body.