Patrick A Hopkins

Author:

Patrick D. Hopkins

ISBN #:

0822630214

Author:

Patrick D. Hopkins

ISBN #:

0847677737

Author:

Patrick D. Hopkins

ISBN #:

0847682560

Author:

Patrick D. Hopkins

ISBN #:

0847682579

US Patent:

6856436, Feb 15, 2005

Filed:

Jun 23, 2003

Appl. No.:

10/601605

Inventors:

Thomas J. Brukilacchio - Reading MA, US
John R. Householder - Reading MA, US
Patrick W. Hopkins - Amherst NH, US

Assignee:

Innovations In Optics, Inc. - Woburn MA

International Classification:

G02B026/08

US Classification:

359196, 362241, 362800

Abstract:

A scanning light source system combines the outputs from multiple, spatially separated, sequentially pulsed light sources for travel in rapid succession along one or more common delivery paths to provide one or more collective outputs that are comparatively higher than would otherwise be possible with the light sources operating singly.

US Patent:

8416960, Apr 9, 2013

Filed:

Mar 9, 2010

Appl. No.:

12/719908

Inventors:

Michael D'Agostino - Lowell MA, US
Paul D. Gjeltema - Stow MA, US
Patrick W. Hopkins - Amherst NH, US
Michael Monahan - Franklin MA, US
Richard L. Pyatt - Fitchburg MA, US
Jonathan D. Turner - Natick MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

G10K 2210/1081
H04R 5/033
G10L 21/0208

US Classification:

381 716, 381 74, 381 941

Abstract:

An earpiece of an ANR device incorporates one or more of feedforward-based ANR; feedback-based ANR; passive noise reduction (PNR) of environmental noise sounds in the environment external to the casing of the earpiece in higher audible frequencies; a controlled leak acoustically coupling the front cavity to the environment external to the casing of the ANR device where the coupling may be through another cavity that is closable to the environment external to the casing with a leaky cover; a combination of an acoustically resistive port and a mass port coupling a rear cavity to the environment external to the casing where the coupling may be through another cavity that is closable to the environment external to the casing with a leaky cover; a feedforward microphone given acoustic access to the environment external to the casing through an aperture that is overlain with a leaky cover or that is enclosed within a cavity that is acoustically coupled to the environment external to the casing with a leak.

US Patent:

57015252, Dec 23, 1997

Filed:

Dec 3, 1996

Appl. No.:

8/758338

Inventors:

Garret J. Caterino - Maynard MA
Patrick W. Hopkins - Chelmsford MA
Elliott S. Strizhak - Millis MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

G03B 908
G03B 1334
G01D 536

US Classification:

396132

Abstract:

A camera shutter and focus encoder assembly comprises an encoder mask fixed in a camera housing and having an arcuate window having alternating opaque and transmissive portions, and an encoder sheet mounted in the housing in abutting relationship with the encoder mask, the encoder sheet being movable with exposure blades and the focus lens of the camera and having an arcuate window having alternating opaque and transmissive portions therein. Means are provided for pressing the encoder mask and the encoder sheet together with the mask and sheet windows in registration with each other. A sensor passes pulses of light through the mask and sheet windows when the transmissive portions thereof are in registration and detects the pulses of light, converts the light pulses to electrical signals, and transmits the electrical signals. A controller receives the electrical signals and determines therefrom the position and direction of movement of the shutter blades, compares the blade position and movement direction with a preselected program and sends to a motor a signal instructing any required compensating shutter blade movement change, and in like manner monitors the focus assembly and sends to the motor a signal instructing any required compensating lens movement change.

US Patent:

56781059, Oct 14, 1997

Filed:

Dec 21, 1995

Appl. No.:

8/576777

Inventors:

Patrick W. Hopkins - Burlington MA
Norman D. Staller - Beverly MA

Assignee:

Polaroid Corporation - Cambridge MA

International Classification:

G03B 908
G03B 118

US Classification:

396463

Abstract:

A camera shutter and focus lens assembly includes a rotary motor having a central shaft, and a rotary beam actuator connected to the shaft. A moveable focus lens, a first shutter blade, and a second shutter blade are in mechanical communication with the actuator beam. Rotation of the shaft by the motor operates to cause movement of the focus lens to effect a selected focusing relationship between the focus lens and a fixed lens proximate thereto, and further operates to cause movement of the first and second shutter blades to cause the shutter blades cooperatively to define an opening to permit light to pass therethrough.