The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2013
Filed:
Aug. 11, 2009
Applicant:
Joseph H. Lyons, Wilton, CT (US);
Inventor:
Joseph H. Lyons, Wilton, CT (US);
Assignee:
ASML Holding N.V., Veldhoven, NL;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L 7/00 (2006.01); G03B 27/32 (2006.01); G03B 27/42 (2006.01); G03B 27/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fluid proximity sensor having one or more measurement nozzles and a reference nozzle coupled to a common chamber. Diaphragms coupled to the measurement nozzles can be sensed by optical, capacitive or inductive means so as to detect changes in pressure. In addition, the number of pressure detectors can be minimized through the use of control valves to selectively couple the nozzles to the detectors, while maintaining the required high level of topographic sensitivity. Further, the measurement nozzle dimensions can be adjusted to optimize proximity measurements in response to accuracy, speed and similar requirements.