Jonathan D Waldern

US Patent:

6373603, Apr 16, 2002

Filed:

Jun 13, 2000

Appl. No.:

09/593721

Inventors:

Milan M. Popovich - Leicester, GB
Jonathan D. Waldern - Los Altos CA

Assignee:

DigiLens. Inc. - Sunnyvale CA

International Classification:

G02B 532

US Classification:

359 15, 359 4, 359 7, 349201, 348744

Abstract:

A system and method for generating a system are disclosed. The system includes a display device comprising a plurality of display regions, each region configured for displaying a color component of the image. A display controller is coupled to the display device and is operable to activate the regions of the display device to display portions of the image. A plurality of light directing devices are positioned to receive light from regions of the display device and direct light towards an image plane. The system further includes a light directing controller coupled to the light directing devices to direct light received thereby to different areas of the image plane. The areas of the image plane generally correspond to the different portions of the image displayed by the regions of the display device. The display controller and light directing controller are coupled together such that the light directing devices direct light to the area of the image plane corresponding to the portion of the image displayed by the region of the display device.

US Patent:

6426811, Jul 30, 2002

Filed:

Aug 3, 1999

Appl. No.:

09/366443

Inventors:

Milan M. Popovich - Leicester, GB
Michael R. Adams - Mountain View CA
Jonathan D. Waldern - Los Altos Hills CA

Assignee:

DigiLens, Inc. - Sunnyvale CA

International Classification:

G02B 532

US Classification:

359 15, 359 13, 359 19, 359 1, 252582, 345 32

Abstract:

An optical system and an imaging and display system using the optical system. The optical system has at least first and second optical elements aligned on a common axis. In one embodiment, each of the first and second optical elements can operate in an active state or in inactive state and comprise a photopolymer and liquid crystal combination. Each of the first and second optical elements is configured to transmit incident light substantially unaltered when each of the first and second optical elements operates in the inactive state. In the active state, however, each of the first and second optical elements does not transmit incident light substantially unaltered. Rather each of the first and second optical elements substantially alters light incident thereon when each of the first and second optical elements operates in the active state.

US Patent:

6504629, Jan 7, 2003

Filed:

Mar 23, 2000

Appl. No.:

09/533120

Inventors:

Milan M. Popovich - Leicester, GB
Jonathan D. Waldern - Los Altos Hills CA

Assignee:

DigiLens, Inc. - Sunnyvale CA

International Classification:

G03H 126

US Classification:

359 22, 359 15, 359 4, 349201

Abstract:

Disclosed is a device for producing colored light and an image generating apparatus including such a device. The device includes a switchable light-directing apparatus configured to receive light and a first control circuit coupled to the switchable light-directing apparatus. The first control circuit provides control signals to the switchable light-directing apparatus. In response to the switchable light-directing apparatus receiving a control signal, the switchable light-directing apparatus directs a first portion of the received light to a first region of a plane. Additionally, the switchable light-directing apparatus directs a second portion of the received light to a second region of the plane, and directs a third portion of the received light to a third region of the plane. The second region is positioned between the first and third regions of the plane.

US Patent:

6507419, Jan 14, 2003

Filed:

Mar 23, 2000

Appl. No.:

09/533608

Inventors:

Milan M. Popovich - Leicester, GB
John J. Storey - Wollaton, GB
Michael R. Adams - Saltby Melton Mowbray, GB
C. David Nabors - Sunnyvale CA
Jonathan D. Waldern - Los Altos Hills CA

Assignee:

DigiLens, Inc. - Sunnyvale CA

International Classification:

G02B 532

US Classification:

359 15, 359 3, 359 24, 359562, 359567, 359568, 359576

Abstract:

Disclosed is an illumination system using optical feedback to maintain a predetermined illumination output. The illumination system employs an electrically controllable optical filter for filtering light incident thereon. The illumination system also includes a light detector for detecting at least a portion of the light filtered by the electrically controllable optical filter. The light detector is in data communication with the electrically controllable optical filter. Some or all light filtered by the electrically controllable optical filter is detected by the light detector, which, in turn generates a corresponding signal that is compared to at least one predetermined value. If the signal generated by the light detector differs when compared to the at least one predetermined value, one or more filtering characteristics of electrically controllable optical filter are varied which, in turn, varies the amount of light filtered by the electrically controllable optical filter. The filtering characteristics of the electrically controllable optical filter continue to be varied until the signal generated by the light etector substantially matches the at least one predetermined value.

US Patent:

6525847, Feb 25, 2003

Filed:

Jan 23, 2001

Appl. No.:

09/768088

Inventors:

Milan M. Popovich - Leicester, GB
Jonathan D. Waldern - Los Altos Hills CA

Assignee:

DigiLens, Inc. - Sunnyvale CA

International Classification:

G02B 532

US Classification:

359 15, 359 22, 359 24, 359 32, 359462, 359464, 359472, 348 51, 353 7

Abstract:

Switchable holographic optical elements (HOEs) can used in systems and methods for projecting three-dimensional images, or for projecting two-dimensional tiled images with increased size and/or resolution. One of the methods may include sequentially displaying first, second, and third color components of a first two-dimensional image at an object plane. The first two dimensional image represents a first slice of a three-dimensional image. As the first, second, and third color components are displayed, first, second and third HOEs may be activated so that the activated first switchable HOE focuses the first color component of the first two-dimensional image onto a first image plane, the activated second switchable HOE focuses the second color component of the first two-dimensional image onto the first image plane, and the wherein the activated third switchable HOE focuses the third color component of the first two-dimensional image onto the first image plane. It is noted that the first, second, and third HOEs may be activated concurrently or sequentially with the display of the first, second, or third color components of the first two-dimensional image. After the first, second, and third color components are displayed, the first, second and third switchable HOEs are deactivated.

US Patent:

6687030, Feb 3, 2004

Filed:

Jan 7, 2003

Appl. No.:

10/337931

Inventors:

Milan M. Popovich - Leicester, GB
Jonathan D. Waldern - Los Altos Hills CA

Assignee:

DigiLens, Inc. - Sunnyvale CA

International Classification:

G03H 126

US Classification:

359 15, 359 22, 359 4, 359 1, 349201

Abstract:

Disclosed is a device for producing colored light and an image generating apparatus including such a device. The device includes a switchable light-directing apparatus configured to receive light and a first control circuit coupled to the switchable light-directing apparatus. The first control circuit provides control signals to the switchable light-directing apparatus. In response to the switchable light-directing apparatus receiving a control signal, the switchable light-directing apparatus directs a first portion of the received light to a first region of a plane. Additionally, the switchable light-directing apparatus directs a second portion of the received light to a second region of the plane, and directs a third portion of the received light to a third region of the plane. The second region is positioned between the first and third regions of the plane.

US Patent:

8224133, Jul 17, 2012

Filed:

Jul 22, 2008

Appl. No.:

12/670730

Inventors:

Milan Momcilo Popovich - Leicester, GB
Jonathan David Waldern - Los Altos Hills CA, US
John James Storey - Wollaton Nottingham, GB

Assignee:

SBG Labs Inc. - Sunnyvale CA

International Classification:

G02F 1/295

US Classification:

385 10, 385 37, 359 15

Abstract:

An Electrically Switchable Bragg Grating (ESBG) despeckler device comprising at least one ESBG element recorded in a hPDLC sandwiched between transparent substrates to which transparent conductive coatings have been applied. At least one of said coatings is patterned to provide a two-dimensional array of independently switchable ESBG pixels. Each ESBG pixel has a first unique speckle state under said first applied voltage and a second unique speckle state under said second applied voltage.

US Patent:

8565560, Oct 22, 2013

Filed:

Jul 16, 2012

Appl. No.:

13/549868

Inventors:

Milan Momcilo Popovich - Leicester, GB
Jonathan David Waldern - Los Altos Hills CA, US
John James Storey - Wollaton Nottingham, GB

Assignee:

SBG Labs, Inc. - Sunnyvale CA

International Classification:

G02F 1/295

US Classification:

385 10, 385 37

Abstract:

An Electrically Switchable Bragg Grating (ESBG) despeckler device comprising at least one ESBG element recorded in a hPDLC sandwiched between transparent substrates to which transparent conductive coatings have been applied. At least one of said coatings is patterned to provide a two-dimensional array of independently switchable ESBG pixels. Each ESBG pixel has a first unique speckle state under said first applied voltage and a second unique speckle state under said second applied voltage.