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:
May. 12, 1992
Filed:
Apr. 05, 1991
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
In the optical waveguide array according to the present invention, a clad portion and cores formed by curing photocurable resins are sandwiched between two reinforcing members, at least one of which has a light transmitting characteristic. The clad portion covers the cores. The method of manufacturing the optical waveguide array according to the present invention comprises applying a first photocurable resin to a mold having an optical waveguide pattern of the optical waveguide array; placing a first reinforcing member having a light transmitting characteristic closely on the upper surface of the photocurable resin and then radiating light from above the first reinforcing member to form a clad layer having grooves corresponding to the optical waveguide pattern, the clad layer being bonded firmly to the first reinforcing member; pouring a second photocurable resin, having a refractive index higher than that of the first photocurable resin, into the grooves of the clad layer; radiating light from above the first reinforcing member to cure the second photocurable resin to thereby form cores; applying a third photocurable resin, having a refractive index lower than that of the second photocurable resin, onto the core-formed surface of the clad layer and then placing a second reinforcing member on the third photocurable resin; and radiating light from above the first reinforcing member to cure the third photocurable resin applied to the core-formed surface of the clad layer to thereby form a photocured resin layer and bonding the second reinforcing member firmly to the photocured resin layer. Alternatively, if the second reinforcing member is also has a light transmitting characteristic, light can be radiated through the second reinforcing member to cure the third photocurable resin.