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:
Feb. 12, 1991
Filed:
Oct. 04, 1988
Gordon L Mitchell, Woodinville, WA (US);
Elric W Saaski, Bothell, WA (US);
MetriCor, Woodinville, WA (US);
Abstract
A spectrum shifting optical switch in which an optical beam splitter couples input light from a light source to a manually movable spectral modulation element and couples output light from the spectral modulation element to a light detector. The spectral modulation element may be an optically resonant cavity having a manually movable diaphragm, thereby changing the resonant wavelength of the cavity. As a result, the wavelength spectrum of the input light is altered by the resonant wavelength of the cavity. The spectral modulation element may also be an optical filter through which the input light passes. The resulting spectral modulation of the input light is detected to determine the position of the resilient diaphargm or filter.