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. 20, 1990
Filed:
Mar. 18, 1988
Anil K Jain, New Brighton, MN (US);
Warren T Boord, Brooklyn Park, MN (US);
Steven M Arnold, Minneapolis, MN (US);
Muhammad A Khan, White Bear Lake, MN (US);
APA Optics, Inc., Blaine, MN (US);
Abstract
An integrated device (10) for scanning a laser beam, including a substrate (12). An electro-optic waveguide (14), a Bragg grating electrode array (31) in operative contact with the waveguide, and a array of electro-optic prisms (33). The electrode array (31) includes a plurality of upper grating electrodes (26) and a lower first electrode (32). A voltage potential can be placed across individual upper grating electrodes (26) and the lower electrode (32) to establish up a Bragg grating in a small localized region. This localized Bragg grating diffracts a laser beam carried by the waveguide and creates a spatially-variable diffracted beam (40) which can be continuously scanned by deflecting the diffracted beam (40) with the electro-optic prism array (33). The integrated device can also perform two dimensional scanning by including an array of small period diffraction gratings (61), to diffract the laser beam (24) out of the plane of the waveguide film (14), or an array of hologram facets (51) to map a set of points defined by the hologram facets (51) into a two-dimensional matrix of points.