公开(公告)号：US20240061085A1

公开(公告)日：2024-02-22

申请号：US18235617

申请日：2023-08-18

Applicant: Arizona Board of Regents on Behalf of the University of Arizona

Inventor： Yuzuru TAKASHIMA ,  Jeff Ching-Wen CHAN ,  Xianyue DENG

IPC: G01S7/481 ,  G01S7/4865

CPC classification number: G01S7/4817 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/4865

Abstract: A LIDAR system includes a laser source configured to generate laser light pulses, a first DMD, a second DMD and a two-dimensional (2D) sensor array. The first DMD is configured to receive the laser light pulses and diffractively steer the light pulses to sequentially illuminate different sub-regions within the extended region. The second DMD is configured to receive reflected light pulses from the different sub-regions in a sequential manner as each of the different sub-regions is illuminated by the light pulses. The 2D sensor array configured to receive reflected light pulses from the second DMD and form an image of the different sub-regions as the reflected light pulses from each of the different sub-regions is sequentially received from the second DMD.

公开(公告)号：US20190250406A1

公开(公告)日：2019-08-15

申请号：US15897385

申请日：2018-02-15

Applicant: Hitachi, Ltd. ,  Arizona Board Of Regents On Behalf Of The University Of Arizona

Inventor： Toshiteru NAKAMURA ,  Yuzuru TAKASHIMA

IPC: G02B27/01 ,  G03H1/04 ,  G02B27/09

CPC classification number: G02B27/0172 ,  G02B27/0944 ,  G03H1/04

Abstract: An imageguide comprising glass or plastic planer substrate, a first hologram area, a second hologram area, and a third hologram area which are formed on the substrate as surface relief grating, period and direction of diffraction structure of the first, second, and third hologram areas have a relationship which is a sum of grating vectors of the first, second, and third hologram areas becomes zero, depth of diffraction structure on the first hologram area is a uniform in the own hologram area, and depth of diffraction structure on the second or third hologram area is chirped in the own hologram area increases luminance and uniformity of virtual image.

公开(公告)号：US20180252513A1

公开(公告)日：2018-09-06

申请号：US15756290

申请日：2016-08-19

Applicant: Arizona Board of Regents on Behalf of the University of Arizona

Inventor： Yuzuru TAKASHIMA

IPC: G01B11/14 ,  G01B11/22 ,  G01S17/42 ,  G01S17/89 ,  G01S7/481 ,  G01S17/93 ,  G01C3/02

CPC classification number: G01B11/14 ,  G01B11/22 ,  G01C3/00 ,  G01C3/02 ,  G01S7/4815 ,  G01S7/4817 ,  G01S17/42 ,  G01S17/89 ,  G01S17/936

Abstract: An imaging laser range finder including an objective lens having an optical axis, an object side, and an image side, a controllable pixelated light modulator disposed along the optical axis on the image side of the lens, and a detector disposed optically downstream from the pixelated light modulator on the image side of the lens. The controllable pixelated light modulator is advantageously a MEMS-based system such as a digital mirror device (DMD). An increased field of view may be obtained by incorporating a pair of opposing surface reflectors between an imaging lens and the controllable pixelated light modulator. Associated methods are disclosed.

公开(公告)号：US20170278534A1

公开(公告)日：2017-09-28

申请号：US15504051

申请日：2014-08-15

Applicant: THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA ,  HITACHI, LTD.

Inventor： Toshiki ISHII ,  Yuzuru TAKASHIMA

IPC: G11B7/0065 ,  G11B7/13 ,  G11B7/007

CPC classification number: G11B7/0065 ,  G03H1/0486 ,  G03H2001/0491 ,  G11B7/00772 ,  G11B7/08564 ,  G11B7/13

Abstract: An optical information recording apparatus and method thereof for recording information in a holographic medium. The apparatus includes a laser source which generates a reference beam and a signal beam to record the information in the holographic medium, a sensor which detects a vibrational amplitude over a time period applied to the optical information processing apparatus for recording the information, an operational circuit which calculates from the vibrational amplitude at least one statistical measure of the vibrational amplitude; and a processor programmed to control a recording mode such that the processor evaluates the calculated statistical measure to determine continuation of a recording operation to the holographic medium.

公开(公告)号：US20200292943A1

公开(公告)日：2020-09-17

申请号：US16629130

申请日：2018-07-09

Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA

Inventor： Yuzuru TAKASHIMA ,  Christopher R. SUMMITT ,  Sunglin WANG

IPC: G03F7/20 ,  G02B6/42 ,  G03F7/039 ,  G03F7/26 ,  G03F7/09 ,  G03F1/42 ,  G03F7/00

Abstract: A lithographic method for making an out-of-plane optical coupler includes forming a photoresist layer of positive photoresist material over a substrate. The positive photoresist layer undergoes a flood exposure to light through a binary mask to pattern a latent image of a mirror blank in the photoresist layer. A laser beam is scanned over the latent image of the mirror blank to apply controlled dosages of light at specified locations to form a latent image of a planar mirror surface that is oriented at a prescribed non-zero angle to a plane in which the substrate extends. The positive photoresist material is developed so that a remaining portion of the developed positive photoresist material forms an out-of-plane optical coupler having a planar mirror surface that is oriented at the prescribed angle.