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:
May. 16, 1989
Filed:
Jan. 29, 1988
Dale E Ihnat, Woonsocket, RI (US);
Anthony C Gilby, Foxboro, MA (US);
Richard A Anderson, North Attleboro, MA (US);
The Foxboro Company, Foxboro, MA (US);
Abstract
A technique is disclosed for achieving critical alignment of optical and mechanical elements, in which one of the foregoing is movable with respect to the other. Specifically, an optical fiber (12) is aligned with respect to a movable member (19) in a first position. The movable member is then displaced to a second position and high levels of radiant energy at a first discernible wavelength are transmitted down the fiber optic path to alter, or pattern, a wavelength sensitive surface area or coating (16) on the surface of the movable member. The movable member is then freed, and radiant energy of a second wavelength to which the coating is insensitive is used to sense the position of the movable member with respect to the fiber optic.