Cymer, Inc.

Hologic, Inc.

Aluminum Company of America

John P Fallon

William N Partlo

Alexander Igorevich Ershov

Richard M Ness

Robert N Jacques

Paul C Melcher

Toshihiko Ishihara

John A Rule

John Meisner

Richard L Sandstrom

Jacob P Lipcon

Howard P Weiss

Jay A Stein

Andrew P Smith

Kevin E Wilson

Eric Von Stetten

Stephen V McKaughan

David Mislan

Paul R Adomaitis

Gary F Nevers

Joseph W Landry

The present invention provides a control system for a modular high repetition rate two discharge chamber ultraviolet gas discharge laser. In preferred embodiments, the laser is a production line machine with a master oscillator producing a very narrow band seed beam which is amplified in the second discharge chamber. Feedback timing control techniques are provided for controlling the relative timing of the discharges in the two chambers with an accuracy in the range of about 2 to 5 billionths of a second even in burst mode operation. This MOPA system is capable of output pulse energies approximately double the comparable single chamber laser system with greatly improved beam quality.

Control system for a two chamber gas discharge laser system

The present invention provides a control system for a modular high repetition rate two discharge chamber ultraviolet gas discharge laser. In preferred embodiments, the laser is a production line machine with a master oscillator producing a very narrow band seed beam which is amplified in the second discharge chamber. Novel control features specially adapted for a two-chamber gas discharge laser system include: (1) pulse energy controls, with nanosecond timing precision (2) precision pulse to pulse wavelength controls with high speed and extreme speed wavelength tuning (3) fast response gas temperature control and (4) Finjection controls with novel learning algorithm.

Control system for a two chamber gas discharge laser

A method of generating medical information including quantitative and image data, comprising steps of performing an image acquisition of at least a portion of a patient to be examined, generating image data based on the performed acquisition, generating quantitative data based on the performed acquisition and constructing a DICOM compatible file, the image data being provided in an image data field and the quantitative data being provided in another field of the DICOM compatible file.

DICOM compliant file communication including quantitative and image data

A DEXA bone densitometer produces estimates of future fracture risk from a current fracture data derived from a lateral image of a patient's thoracic and lumbar spine taken in a single scan, typically with the patient on her or his side, and from numerical bone mineral density measurements.

Device and method for determining future fracture risk

Method and apparatus for inspecting the surface of a moving web of homogeneous material for anomalies, the apparatus including a light source for illuminating the web surface and a light sensitive detector for receiving data from the web surface. The data is representative of the light reflected from the surface, as the light is affected by surface anomalies and background information. Computational means are provided for receiving output data from the detector in response to the data the detector receives from the web surface, and for processing the output data in a manner that determines the presence of surface anomalies. The computation means includes a plurality of filters for transforming the surface data in a manner that effects substantial elimination of the background information, and means for establishing threshold levels for background information. In addition, automatic means is provided for modifying the threshold levels in response to changes in the reflectance, frequency, or contrast of background information received by the detector and forwarded to the computation means.

Video web inspection system employing filtering and thresholding to

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Andover, MA, United States of America

John P Fallon