Scott K Lindemann

US Patent:

20120050750, Mar 1, 2012

Filed:

Oct 19, 2011

Appl. No.:

13/276853

Inventors:

Paul Byron HAYS - Ann Arbor MI, US
David Keith JOHNSON - Canton MI, US
David Michael ZUK - Dexter MI, US
Scott Kevin LINDEMANN - Howell MI, US

Assignee:

MICHIGAN AEROSPACE CORPORATION - Ann Arbor MI

International Classification:

G01B 9/02

US Classification:

356519

Abstract:

A fringe pattern from an interferometer is imaged onto a digital micromirror device containing an array of micromirrors in an associated pattern of pixel mirror rotational states that provide for sampling the circular fringe pattern in cooperation with one or more associated photodetectors, so as to provide for generate a corresponding set of associated complementary signals. A plurality of different sets of associated complementary signals generated for a corresponding plurality of mutually independent associated patterns of pixel mirror rotational states are used to determine at least one metric associated with the circular fringe pattern.

US Patent:

20170023679, Jan 26, 2017

Filed:

Mar 12, 2015

Appl. No.:

15/124837

Inventors:

- Ann Arbor MI, US
Scott K. LINDEMANN - Ann Arbor MI, US

International Classification:

G01S 17/95
G01S 7/481

Abstract:

The invention is directed to a device and method for conducting measurement of a Doppler shift caused by molecular and aerosol movement while simultaneously providing measurement of temperature using LIDAR. The device incorporates a light source; and a Fabry-Perot etalon having a resonant cavity formed with two plane parallel reflecting surfaces, wherein the light source is positioned relative to the a Fabry-Perot etalon such that light is injected into a plane parallel resonant cavity of the Fabry-Perot etalon at an angle of incidence other than normal to the reflecting surfaces. The Fabry-Perot etalon may be formed with each of the parallel reflecting surfaces having different reflectivities. The light source may be positioned to direct the light to bypass a first reflective surface of the plane parallel resonator cavity, and/or implemented using a divergent light source. In addition, the Fabry-Perot etalon may be formed to include an aperture in at least one mirror surface or an edge portion in at least one mirror surface through which the light is directed into the resonant cavity. The device may also incorporate a detector for detecting a fringe pattern outputted by the Fabry-Perot etalon.

US Patent:

20150116692, Apr 30, 2015

Filed:

Mar 18, 2013

Appl. No.:

14/397950

Inventors:

- Ann Arbor MI, US
Scott Lindemann - Ann arbor MI, US

International Classification:

G01S 17/10

US Classification:

356 401

Abstract:

A system for scanning light to define a range gated signal includes a pulsed coherent light source that directs light into the atmosphere, a light gathering instrument that receives the light modified by atmospheric backscatter and transfers the light onto an image plane, a scanner that scans collimated light from the image plane to form a range gated signal from the light modified by atmospheric backscatter, a control circuit that coordinates timing of a scan rate of the scanner and a pulse rate of the pulsed coherent light source so that the range gated signal is formed according to a desired range gate, an optical device onto which an image of the range gated signal is scanned, and an interferometer to which the image of the range gated signal is directed by the optical device. The interferometer is configured to modify the image according to a desired analysis.