Patent ID: 9110264
Filing Date: 2015-08-18
Classification: G02B

Abstract:
1. An optical module, comprising: a wiring board on which a first opening and a second opening are provided having, between the first and second openings, a traversing portion on which a signal wire is arranged; an optical component, mounted on a side of a first plane of the first opening and the second opening of the wiring board, that generates heat; a heat sink arranged on a side of a second plane, which is on a reverse of the side of the first plane, of the first opening and the second opening of the wiring board; and an anisotropic heat dissipation sheet, provided between the traversing portion and the heat sink, and the optical component, having a thermal conductivity higher in traversing directions than in thickness directions of the wiring board, the traversing directions crossing the traversing portion in a plane orthogonal to the thickness directions, wherein: the heat sink accommodates, as a case of the optical module, a whole of the wiring board, the optical component, and the anisotropic heat dissipation sheet; the heat sink includes a first projection part inserted into the first opening of the wiring board and a second projection part inserted into the second opening of the wiring board: the first projection part projects from the first plane of the wiring board after passing through the first opening; and the second projection part projects from the first plane of the wiring board after passing through the second opening.