Optical coupling device having at least dual lens and a reflective surface

摘要

An optical coupling device includes an optical coupling member, at least one photoelectric converter, and at least one optical fiber. The optical coupling member has a first surface, on which at least one first lens is provided, a second surface, on which at least one second lens is provided, and a reflective surface. The photoelectric converter faces the first lens of the optical coupling member, and the optical fiber faces the second lens of the optical coupling member. The optical coupling device satisfies a condition of 0.3<β<0.9; β=NA1/NA2, where NA1 is a numerical aperture of the photoelectric converter; NA2 is a numerical aperture of the optical fiber.

主权项

1. An optical coupling device, comprising:
an optical coupling member having a first surface, on which at least one first lens is provided, a second surface, on which at least one second lens is provided, and a reflective surface, wherein optical signals enter the optical coupling member through the first lens, and then the optical signals is reflected by the reflective surface to leave the optical coupling member through the second lens; or optical signals enter the optical coupling member through the second lens, and then the optical signals is reflected by the reflective surface to leave the optical coupling member through the first lens; at least one photoelectric converter in association with the first surface of the optical coupling member and facing the first lens, wherein the photoelectric converter receives the optical signals from the optical coupling member and converts the optical signals into electrical signals, and then transmits the electrical signals out; or the photoelectric converter receives electrical signals and converts the electrical signals into optical signals, and then transmits the optical signals to the optical coupling member; and at least one optical fiber in association with the second surface of the optical coupling member and facing the second lens, wherein the optical fiber transmits optical signals to the optical coupling member, or receives the optical signals from the optical coupling member and transmits the optical signals out; wherein the photoelectric converter and the optical fiber satisfy a condition of:
0.3<β<0.9; β=NA1/NA2 where NA1 is a numerical aperture of the photoelectric converter; and NA2 is a numerical aperture of the optical fiber.