Donald R. Powell
Architects at Park Ln, Dallas, TX

7330298, Feb 12, 2008

Feb 4, 2005

11/051373

William M. Bommersbach - Richardson TX, US
Donald C. Whitney - Allen TX, US
Frederick C. Wedemeier - Richardson TX, US
Roger S. Carver - Richardson TX, US
Steven M. Penn - Plano TX, US
Stephen W. Marshall - Richardson TX, US
Frank J. Poradish - Plano TX, US
Donald A. Powell - Dallas TX, US

Texas Instruments Incorporated - Dallas TX

G02B 26/00, G09G 3/34

359292, 345 85

An optical system for projecting an image having x and y axes onto a image plane is provided. The system includes an SLM device spaced from the image plane, the SLM device having a plurality of pixels operable to project pixels of the image onto the image plane and positioned such that the individual pixels of the projected image are oriented at substantially 45 degrees relative to the x and y axes of the image. The system further includes an optic element disposed between the SLM device and the image plane and a linear displacement device operatively connected to and operable to selectively displace at least one of the SLM device and the optic element. A method for projecting an image onto a image plane is also provided.

8474721, Jul 2, 2013

May 24, 2010

12/785695

Donald A. Powell - Dallas TX, US
Falvey L. Malarcher - Plano TX, US

DRS RSTA, Inc. - Dallas TX

G06K 7/10

23546241, 23546211, 23546224

An imaging system which includes a housing for a radiation detector having a window disposed above and in axial alignment with the radiation detector, a variable aperture assembly which includes a base ring having a first opening and mounted on the radiation detector housing such that the first opening is in axial alignment with the window, a plate having a first aperture and adapted to engage the base ring such that the first aperture is disposed over the window, at least one aperture blade each operatively coupled to the base ring, and an aperture drive mechanism having a body and an actuator coupling member extending at an angle from the body. In addition, the imaging system includes an actuator assembly having an actuator and an actuator arm, the actuator arm disposed adjacent to the radiation detector housing in proximity to the actuator coupling member.

7336907, Feb 26, 2008

Oct 31, 2003

10/699472

Donald A. Powell - Dallas TX, US
Terry A. Bartlett - Dallas TX, US
Bryce Sawyers - Allen TX, US

Texas Instruments Incorporated - Dallas TX

H04B 10/04

398201

Described embodiments provide for an optical communications assembly or other optical assembly in which the post-dispersion optical signals are controlled in dispersive and non-dispersive directions. In one embodiment, the assembly includes an optical signal collimator configured to emit an optical signal based on an input communication signal. In addition, the assembly includes a dispersive device that receives the optical signal and disperses multiple wavelength channels of the optical signal in a dispersive direction. The assembly further includes a first light-directing device configured to control the dispersion of the multiple wavelength channels in the non-dispersive direction. A second light-directing device is provided to control dispersion in the dispersive direction. Specifically, the first and second light-directing devices focus the multiple wavelength channels in the dispersive and non-dispersive directions so as to make the multiple wavelength channels either propagate in parallel or re-converge or diverge at a different rate in both directions. By controlling the multiple channel wavelengths through the use of the light-directing devices, the spot sizes and shapes of the channels projected onto a light modulating device can be controlled.

7724412, May 25, 2010

Jun 11, 2007

11/761161

Donald A. Powell - Dallas TX, US
Falvey L. Malarcher - Plano TX, US

DRS RSTA, Inc. - Dallas TX

G02B 26/02

359234, 359227

Variable aperture and actuator assemblies are provided for a radiation detector housing in an imaging system. The variable aperture assembly includes a ring mounted over the housing's window, a plate having a first aperture disposed over the window, an aperture blade operatively coupled to the ring so the blade moves laterally relative to the first aperture, and an aperture drive mechanism having a body and an actuator coupling member extending at an angle from the body. The drive mechanism is adapted to drive the blade laterally away from the first aperture when the member is moved in a first lateral direction, and over the first aperture to define a second aperture disposed over the window when the member is moved in a second lateral direction. The actuator assembly has an actuator and an actuator arm adapted to engage the actuator coupling member to control the lateral movement of the member.

8260099, Sep 4, 2012

Oct 11, 2010

12/901662

Donald Andrew Powell - Dallas TX, US

Texas Instruments Incorporated - Dallas TX

G02B 6/28

385 24

Disclosed is an add-drop multiplexer that receives an optical signal having a plurality of channels. The multiplexer spatially separates the channels, and a spatial light modulator within the multiplexer, which in some embodiments is a switched blazed grating, routes the channels along first or second paths according to whether the particular channels are to be sent along as a part of an output communication signal or “dropped” into a dropped-channel optical communications signal. The add-drop multiplexer is also operable to receive optical channels to be added to an optical signal and to use a spatial light modulator to add those optical signals to that optical signal.

6905259, Jun 14, 2005

Dec 31, 2001

10/035903

Steven E. Smith - Coppell TX, US
Donald A. Powell - Dallas TX, US

Texas Instruments Incorporated - Dallas TX

G02B006/36

385 90, 403143, 385 52

Disclosed is a mounting system and method in which symmetrical springs are used about a collar in a gimbal system to capture an assembly of a ball and an optical or other type of component. Once captured within the mounting system, the ball/component assembly can pivot until an optimal alignment is reached. Once the optimal alignment is reached, the ball/component assembly is fixed using laser welding.

7203398, Apr 10, 2007

Mar 20, 2003

10/393420

Elisabeth Marley Koontz - Richardson TX, US
Donald A. Powell - Dallas TX, US

Texas Instruments Incorporated - Dallas TX

G02B 6/34, G02B 6/26, G02B 6/42

385 37, 385 15, 385 16, 385 18, 385 31, 385 33, 385 39, 385 47, 385 49, 385 50, 385 88, 385 89, 385 92

An optical module having an integral optical waveguide with waveguide ports at each end. The optical waveguide receives an input light beam through a first waveguide port. The input light beam passes through the waveguide and is emitted from the second waveguide port, where it is reflected by the reflective surface. After being reflected by the reflective surface, the input light beam can be directed onto the surface of a DMD array, where the input light beam can be selectively reflected in a particular direction. The reflective surface may also comprise a diffractive grating, thereby enabling wavelength selective switching. In addition, the reflective surface may comprise a generally concave surface that converts a diverging input light beam into a generally collimated light beam, thereby facilitating more accurate selection and switching by the DMD array.

8433201, Apr 30, 2013

Feb 3, 2003

10/357857

Bryce Daniel Sawyers - Allen TX, US
Donald A. Powell - Dallas TX, US

Texas Instruments Incorporated - Dallas TX

H04B 10/12

398149, 398 25, 398 30, 398 33, 398 84

A dynamic gain equalizer-monitor (DGEM) includes a light modulator operable to modulate one or more component wavelengths of an input optical signal. The DGEM also includes a grating operable to receive one or more modulated component wavelengths from the light modulator. The grating is also operable to combine a first portion of each of the one or more modulated component wavelengths and transmit that first portion into an output optical signal. The DGEM may also include a detector array operable to receive, from the grating, a second portion of modulated component wavelengths that are separated from the first portion by the grating. The detector array is operable to generate an electrical signal proportional to an optical characteristic associated with each of the modulated component wavelengths of the second portion.