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:
Dec. 04, 1984
Filed:
Jul. 07, 1982
Frank H Levinson, Bethlehem, PA (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
An optical coupling device for diverting light among different transmission elements. A plurality of transmission elements (11, 12, 13) are coupled to one surface (32) of a focusing element (10). Positioned near the opposite surface (32) are first and second at least partially reflecting elements (15 and 16). The first element (15) may be affixed to the end surface of the focusing element and covers only a portion thereof. The second element is positioned further from the end surface and at an angle to the first element. The area of the first element is chosen to produce a desired splitting ratio, and the angle between elements can be adjusted to maximize coupling efficiency between the transmission elements. The device can be used, for example, as a three port coupler, an asymmetric four port coupler, or a four port power divider.