Ian D Hardcastle

US Patent:

6362861, Mar 26, 2002

Filed:

May 2, 2000

Appl. No.:

09/563177

Inventors:

Pierre H. Hertz - Mountain View CA
Charles D. Hoke - Palo Alto CA
Ian Hardcastle - Sunnyvale CA

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

G02F 11335

US Classification:

349 69, 385901, 362 89, 349 62

Abstract:

A micro display system is provided that uses ambient light to illuminate the microdisplay. A wave-guide contains an embedded dye which absorbs ambient light through the surface of the wave-guide and re-emits light. Total internal reflection in the wave-guide and reflection from a reflector at one end of the wave-guide direct all the re-emitted light through a light-transmissive end to an illuminator for illuminating the microdisplay with polarized light. The microdisplay has a plurality of pixels which are activated to selectively reflect polarized or rotated polarized light back through the illuminator where the polarized light forms an image for a user.

US Patent:

6532110, Mar 11, 2003

Filed:

Mar 3, 2000

Appl. No.:

09/517909

Inventors:

Peter Robrish - San Francisco CA
Andreas Weber - Redwood City CA
Ian Hardcastle - Sunnyvale CA

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

G02B 530

US Classification:

359485, 359487, 359495, 359497, 359900

Abstract:

A polarization device comprising: a light path; a micro lens array disposed in the light path for separating light into a plurality of individual beams of light; a polarization filter disposed in the light path to receive a plurality of the beams of light and to transmit the received light of a desired polarization state and reflect the received light of a perpendicular polarization state that is perpendicular to the desired polarization state; and a reflecting polarization converter disposed to receive and reflect the reflected light of the perpendicular polarization state and to convert the perpendicular polarization state to the desired polarization state.

US Patent:

6580849, Jun 17, 2003

Filed:

Jan 5, 2001

Appl. No.:

09/755526

Inventors:

Datong Chen - Sunnyvale CA
John C. Philipp - Sonoma CA
Ian Hardcastle - Sunnyvale CA

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

G02B 626

US Classification:

385 18, 385 15, 385 16, 385 17, 385 25

Abstract:

An optical switch that includes optical paths organized into a set of M input optical paths and a set of N output optical paths. The optical switch additionally includes a faceted mirror corresponding to each of the M input optical paths and including N facets and a faceted mirror corresponding to each of the N output optical paths and including M facets. Finally, the optical switch includes a moving mechanism coupled to each faceted mirror to step the faceted mirror to selectively align one of the facets of the faceted mirror with the one of the optical paths with which the faceted mirror is associated. The facets of each of the faceted mirrors corresponding to one of the sets of optical paths, i. e. , the set of input optical paths or the set of output optical paths, are preferably angled to reflect light towards a different one of the faceted mirrors corresponding to the other of the sets of optical paths, i. e. , the set of output optical paths or the set of input optical paths, respectively.

US Patent:

6754417, Jun 22, 2004

Filed:

Apr 24, 2002

Appl. No.:

10/133818

Inventors:

Ken A. Nishimura - Fremont CA
Ian Hardcastle - Sunnyvale CA
Jonathan N. Simon - Castro Valley CA
Gary B. Gordon - Saratoga CA

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

G02B 626

US Classification:

385 48, 385 27, 385 30, 385 32

Abstract:

The optical fiber tap establishes optical communication between a branch optical fiber and a main optical fiber and includes a housing, a serpentine main channel and a branch channel. The main channel is defined in the housing and is shaped to accommodate part of the main optical fiber. The main channel includes a coupling curve portion shaped to define a main coupling curve in the main optical fiber. The branch channel is also defined in the housing and is shaped to accommodate part of the branch optical fiber. The branch channel communicates with the main channel at the coupling curve portion of the main channel. Optical signals couple laterally between the main optical fiber located in the main channel and the branch optical fiber located in the branch channel. Optical communication between the optical fibers is therefore established.

US Patent:

6842557, Jan 11, 2005

Filed:

Apr 18, 2003

Appl. No.:

10/418669

Inventors:

Datong Chen - Sunnyvale CA, US
John C. Philipp - Sonoma CA, US
Ian Hardcastle - Sunnyvale CA, US

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

G02B 626

US Classification:

385 18, 385 15, 385 16, 385 17, 385 25

Abstract:

An optical switch that includes optical paths organized into a set of M input optical paths and a set of N output optical paths, where at least one of M and N is greater than unity. The optical switch additionally includes a faceted mirror corresponding to each of the M input optical paths and including N facets and a faceted mirror corresponding to each of the N output optical paths and including M facets. Finally, the optical switch includes a moving mechanism coupled to each faceted mirror to step the faceted mirror linearly in a direction orthogonal to the optical paths to selectively align one of the facets of the faceted mirror with the one of the optical paths with which the faceted mirror is associated. The facets of each of the faceted mirror corresponding to one of the sets of optical paths, i. e. , the set of input optical paths or the set of output optical paths, are preferably angled to reflect light towards a different one of the faceted mirrors corresponding to the other of the sets of optical paths, i. e.

US Patent:

6975617, Dec 13, 2005

Filed:

Mar 23, 2001

Appl. No.:

09/816605

Inventors:

Richard C. Walker - Palo Alto CA, US
Bharadwaj Amrutur - Santa Clara CA, US
Peter Mottishaw - West Lothian, GB
C. Steven Joiner - Cupertino CA, US
Larry A. Chesler - Loveland CA, US
Ian Hardcastle - Sunnyvale CA, US

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

H04J003/24

US Classification:

370349, 370355, 370390, 370471

Abstract:

The network monitoring system comprises a network router with built-in monitoring data gathering. The network router includes channels through which data pass in packets. Each of the packets includes a packet header. The network router additionally includes a header copier and a packet generator. The header copier generates a header copy from the packet header of at least some of the packets. The packet generator receives the header copies and forms monitoring data packets from them. Each monitoring data packet additionally represents temporal data relating to the header copies included in it. A method of obtaining performance data relating to a data transmission network that includes a node passes data through the node in packets. Each of the packets includes a packet header. At least some of the packet headers are copied to obtain respective header copies as monitoring data from which monitoring data packets are formed.

US Patent:

6983110, Jan 3, 2006

Filed:

Feb 22, 2001

Appl. No.:

09/792150

Inventors:

Lisa A. Buckman - Pacifica CA, US
Ian Hardcastle - Sunnyvale CA, US

Assignee:

Agilent Technologies, Inc. - Palo Alto CA

International Classification:

H04B 10/06

US Classification:

398212, 398202, 398153

Abstract:

The optical receiver comprises an optical input path, a light detector array, an optical converging element and an information signal generator. The light detector array includes light detectors and a light-sensitive surface. Each light detector generates an electrical signal in response to light. The optical converging element is located to focus an optical input signal received via the optical input path to form a spot on the light-sensitive surface of the light detector array. The spot has an area less than the area of the light-sensitive surface but greater than the area of one of the light detectors. The information signal generator generates an electrical information signal from at least one of the electrical signals. In an embodiment, the information signal generator includes a summer that sums the electrical signals generated by the light detectors to generate the electrical information signal. In another embodiment, the information signal generator operates to identify the electrical signals generated in response to the optical input signal, to generate the electrical information signal from the electrical signals and to exclude from the electrical information signal ones of the electrical signals not identified as being generated in response to the optical input signal.

US Patent:

7035936, Apr 25, 2006

Filed:

Jul 25, 2001

Appl. No.:

09/915934

Inventors:

Julie E. Fouquet - Palo Alto CA, US
Ian Hardcastle - Palo Alto CA, US

International Classification:

G06F 15/173

US Classification:

709238, 709239

Abstract:

A network for communicating a message is established by providing a network that includes topographic network devices and communication links interconnecting the topographic network devices. The topographic network devices each have a physical location represented by a topographic coordinate set. A network address is assigned to each of the topographic network devices. The network address includes the topographic coordinate set of the topographic network device. The topographic coordinate set of the topographic network device is transmitted to those of the topographic network devices directly connected to the topographic network device. The topographic coordinate set of the topographic network device is received and stored at at least one of the topographic network devices directly connected to the topographic network device.