Patents Assigned to Mezmeriz, Inc.
  • Patent number: 11119217
    Abstract: Techniques are described herein that are capable of forming a depth map and/or projecting an image onto object(s) based on the depth map. A depth map is a three-dimensional representation of an environment. Forming the depth map may utilize a progressive resolution refinement technique. For example, locating information may be determined in accordance with the progressive resolution refinement technique in response to performing a scan of a current point over a field of view. The current point is a point, selected from a plurality of points (e.g., a grid of points) in the field of view, to which a detection beam of light is directed at a respective time as the scan is performed over the field of view. In accordance with this example, the locating information may be coordinated with the scan to form the depth map.
    Type: Grant
    Filed: March 9, 2019
    Date of Patent: September 14, 2021
    Assignee: Mezmeriz, Inc.
    Inventors: Clifford A. Lardin, Shahyaan Desai, Scott G. Adams
  • Patent number: 10859614
    Abstract: Apparatus and associated method for unambiguously evaluating high-bandwidth, rapidly changing analog range data in real time using low-cost components that allow detection of the signal of interest using a sampling rate that is lower than the Nyquist rate required to directly evaluate the full range data bandwidth.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: December 8, 2020
    Assignee: Mezmeriz Inc.
    Inventors: Clifford A. Lardin, Shahyaan Desai
  • Patent number: 10677924
    Abstract: Techniques are described herein that are capable of forming a depth map and/or projecting an image onto object(s) based on the depth map. A depth map is a three-dimensional representation of an environment. Forming the depth map may utilize a progressive resolution refinement technique. For example, locating information may be determined in accordance with the progressive resolution refinement technique in response to performing a scan of a current point over a field of view. The current point is a point, selected from a plurality of points (e.g., a grid of points) in the field of view, to which a detection beam of light is directed at a respective time as the scan is performed over the field of view. In accordance with this example, the locating information may be coordinated with the scan to form the depth map.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: June 9, 2020
    Assignee: Mezmeriz, Inc.
    Inventors: Clifford A. Lardin, Shahyaan Desai, Scott G. Adams
  • Patent number: 10578740
    Abstract: This disclosure presents a non-contact, frequency modulated continuous wave (FMCW) coherent optical distance measuring system and method for determining a measured distance over a wide distance range and simultaneously with fine range resolution. The approach and apparatus presented within eliminates the need for expensive, high frequency post-detection electronics to perform the necessary signal processing to accurately determine distance.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 3, 2020
    Assignee: Mezmeriz Inc.
    Inventors: Shahyaan Desai, Scott G. Adams, Clifford A. Lardin
  • Patent number: 10310085
    Abstract: A distance-measuring pixel apparatus includes a photonic integrated circuit disposed on a common substrate that further includes a photonic integrated circuit substrate having disposed thereon two 3 dB directional couplers, a GRIN lens, and a partially reflecting Faraday mirror having a first side that is optomechanically coupled to a second side of the GRIN lens; and a source laser, a first photodetector, and a second photodetector. A related distance measuring method includes, using the distance-measuring pixel apparatus, generating a local oscillator (LO) beam, generating an echo, combining the LO beam and the echo beam, splitting the combined LO beam and the echo beam, and producing a modulation of the photodetector assembly photocurrent at a frequency that encodes the distance of a remote object.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: June 4, 2019
    Assignee: Mezmeriz Inc.
    Inventors: Shahyaan Desai, Scott G. Adams, Clifford A. Lardin
  • Patent number: 10228466
    Abstract: Techniques are described herein that are capable of forming a depth map and/or projecting an image onto object(s) based on the depth map. A depth map is a three-dimensional representation of an environment. Forming the depth map may utilize a progressive resolution refinement technique. For example, locating information may be determined in accordance with the progressive resolution refinement technique in response to performing a scan of a current point over a field of view. The current point is a point, selected from a plurality of points (e.g., a grid of points) in the field of view, to which a detection beam of light is directed at a respective time as the scan is performed over the field of view. In accordance with this example, the locating information may be coordinated with the scan to form the depth map.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: March 12, 2019
    Assignee: Mezmeriz, Inc.
    Inventors: Clifford A. Lardin, Shahyaan Desai, Scott G. Adams
  • Publication number: 20190064358
    Abstract: This disclosure presents a non-contact, frequency modulated continuous wave (FMCW) coherent optical distance measuring system and method for determining a measured distance over a wide distance range and simultaneously with fine range resolution. The approach and apparatus presented within eliminates the need for expensive, high frequency post-detection electronics to perform the necessary signal processing to accurately determine distance.
    Type: Application
    Filed: August 23, 2017
    Publication date: February 28, 2019
    Applicant: Mezmeriz Inc.
    Inventors: Shahyaan Desai, Scott G. Adams, Clifford A. Lardin
  • Publication number: 20190025356
    Abstract: Apparatus and associated method for unambiguously evaluating high-bandwidth, rapidly changing analog range data in real time using low-cost components that allow detection of the signal of interest using a sampling rate that is lower than the Nyquist rate required to directly evaluate the full range data bandwidth.
    Type: Application
    Filed: January 4, 2017
    Publication date: January 24, 2019
    Applicant: Mezmeriz Inc.
    Inventors: Clifford A. Lardin, Shahyaan Desai
  • Publication number: 20190011559
    Abstract: A distance-measuring pixel apparatus includes a photonic integrated circuit disposed on a common substrate that further includes a photonic integrated circuit substrate having disposed thereon two 3 dB directional couplers, a GRIN lens, and a partially reflecting Faraday mirror having a first side that is optomechanically coupled to a second side of the GRIN lens; and a source laser, a first photodetector, and a second photodetector. A related distance measuring method includes, using the distance-measuring pixel apparatus, generating a local oscillator (LO) beam, generating an echo, combining the LO beam and the echo beam, splitting the combined LO beam and the echo beam, and producing a modulation of the photodetector assembly photocurrent at a frequency that encodes the distance of a remote object.
    Type: Application
    Filed: July 7, 2017
    Publication date: January 10, 2019
    Applicant: Mezmeriz Inc.
    Inventors: Shahyaan Desai, Scott G. Adams, Clifford A. Lardin
  • Publication number: 20160377721
    Abstract: High-resolution laser range finding using frequency-modulated pulse compression techniques can be accomplished using inexpensive semiconductor laser diodes. Modern applications of laser range finding often seek to maximize the distance over which they can resolve range together with the range resolution and to minimize the pulse duration in order to acquire more data in less time. The combination of these requirements results in increasing bandwidth requirements for processing the ranging data, which can exceed 10 GHz over ranges of tens of meters, depending on the range resolution and pulse duration. Here we describe a method of compressing this range data bandwidth in real time using low-cost components and simple techniques that require no increase in processing time or resources.
    Type: Application
    Filed: June 27, 2016
    Publication date: December 29, 2016
    Applicant: Mezmeriz Inc.
    Inventors: Clifford A. Lardin, Shahyaan Desai, Scott G. Adams
  • Patent number: 8854711
    Abstract: The present disclosure describes, among other things, a reduced speckle contrast microelectromechanical system. One exemplary embodiment includes micromechanical structures configured to form a uniform reflective surface on a substrate, an elastic substance coupled to the substrate, and an energy source that applies a voltage to the elastic substance to alter the shape of the surface of the substrate, for example, by about 10% to about 25% of a wavelength of light projected onto the substrate at a frequency of at least 60 Hz. Another exemplary embodiment includes micromechanical structures formed on a surface of a substrate, a reflective diaphragm connected to the substrate, an elastic substance coupled to the diaphragm, and an energy source that applies a voltage to the elastic substance to vibrate the diaphragm at a frequency of at least 60 Hz.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: October 7, 2014
    Assignee: Mezmeriz, Inc.
    Inventor: Shahyaan Desai
  • Patent number: 8416482
    Abstract: In one aspect, a system for facilitating short depth projection is shown and described. In brief overview, the system comprises a MEMS scanner that produces a ray of light in communication with an illumination source. An oscillating micromirror receives the ray of light from the illumination source and reflects the ray to one or more points on a curved reflective surface. The micromirror comprises a silicon mirror reinforced by a high-stiffness material. The system further comprises a screen on which the curved reflective surface projects the ray of light received from the micromirror.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: April 9, 2013
    Assignee: Mezmeriz, Inc.
    Inventor: Shahyaan Desai
  • Publication number: 20110228375
    Abstract: The present application is directed towards, among other things, systems and methods for modulating the intensity of laser light at high frequencies for use in projection systems. A laser is modulated by an electro-optical device, such as an intensity modulator, that can change its reflective or transmissive behavior at rates exceeding tens of megahertz under the application of an electric field. In some embodiments, the intensity modulator may be configured as a Fabry-PĂ©rot interferometer or etalon, or a Gires-Tournois etalon. In many embodiments, the intensity modulator may include a transparent relaxor-ferroelectric-type material between the modulator's reflective plates. By applying a voltage to the ferroelectric material, its refractive index may be varied to dynamically change the resonance of the modulator, modulating the intensity of the light transmitted through or reflected from the modulator.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 22, 2011
    Applicant: Mezmeriz, Inc.
    Inventor: Shahyaan Desai