University of Rochester

John C Howell

Joseph S Choi

Joseph Howell

Andrew Jordan

Christopher Mullarkey

Julian Martinez-Rincon

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.

Virtual window

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.

Method for scanning an object using a gravimeter

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&#x2014;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.

Cloaking systems and methods

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.

Interferometric pendulum gravimeter, and method for same

The present disclosure is generally related to three-dimensional displays and methods for displaying three-dimensional images. Some embodiments may be related to zooming for 3D image capture and display in real-time.

3D display ray principles and methods, zooming, and real-time demonstration

A paraxial cloaking device provides a cloaking volume in which an item can be hid from view. A cloaking device includes an optical input receiving light rays and an optical output from which a continuous range of directions of the received light rays exit the paraxial cloaking device. The cloaking volume being disposed between the optical input and the optical output. For received light rays having incoming directions non-parallel to the reference optical axis up to a first angle, each of the received light rays exits the cloaking device substantially aligned with the respective received light ray and does not pass through the cloaking volume. The paraxial cloaking device has a unity magnification factor. In some instances, the paraxial cloaking device includes a phase matching element.

Growing community of inventors

Jerusalem, Israel

John C Howell