Patent ID: 8554030
Filing Date: 2013-10-08
Classification: G02B

Abstract:
1. An optically coupled device to which a photoelectric conversion device, on which a photoelectric conversion element that emits or receives light is formed, and a multi-mode optical fiber can be attached, said optically coupled device optically coupling the photoelectric conversion element and an end surface of the optical fiber and comprising: a first lens surface formed on a first surface portion of an end surface on a photoelectric conversion device side of an optically coupled device main body, the first surface portion facing the photoelectric conversion element when the photoelectric conversion device is attached thereto, and the first lens surface forming an optical path connecting the photoelectric conversion element and an end surface of the optical fiber; a second lens surface formed on a second surface portion of an end surface on an optical fiber side of the optically coupled device main body, the second surface portion facing the end surface of the optical fiber when the optical fiber is attached thereto, and the second lens surface forming an optical path connecting the photoelectric conversion element and the end surface of the optical fiber; wherein, the optically coupled device main body is formed so as to have a shape in which the end surface on the optical fiber side of said optically coupled device main body is formed with: said optically coupled device main body is formed such that the fourth surface portion allows the second lens surface to be viewed simultaneously with the first lens surface from the surface normal direction of the first surface portion.