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:
Mar. 08, 1994
Filed:
Dec. 23, 1992
Yasuhisa Tanisawa, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In an optical device comprising a substrate and a package for receiving the substrate on a bottom surface of the package, a block is fixed to an upper surface of the substrate by a low melting-point glass or a solder. The block is made of a welding material and welded to a predetermined part on a wall surface of the package. The substrate has at least one photoelectric element or optical waveguide on the upper surface. An optical fiber is fixed to the package and optically coupled to the photoelectric element or the optical waveguide through a first perforation of the package. The block may be welded to the wall surface of the package made of a welding material. The substrate may have an internal surface which defines a second perforation exposing a predetermined area of the bottom surface. The block is brought into contact with the second internal surface and the predetermined area and welded to the predetermined area.