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:
Jun. 27, 1989
Filed:
Jun. 18, 1987
Richard G Caro, Boston, MA (US);
Troy M Harmon, Watertown, MA (US);
Summit Technology, Inc., Watertown, MA (US);
Abstract
Laser-to-waveguide coupling devices and methods are disclosed employing an aperture, and an imaging lens. The aperture clips the beam edges to flatten the spatial intensity profile, and the lens mirror-images the plane of the aperture onto the waveguide face with appropriate magnification or demagnification to match the input beam dimensions to those of the waveguide. In one preferred embodiment, a first focusing lens is also employed in conjunction with a pinhole aperture and a second imaging lens. The first focusing lens focuses the laser beam onto the aperture and thereby reduces the optical path length. The second imaging lens images the plane of the aperture onto the waveguide.